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wpa_cli: Clean up redrawing and filter out BSS added/removed events
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
1 /*
2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009-2010, Atheros Communications
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * Alternatively, this software may be distributed under the terms of BSD
14 * license.
15 *
16 * See README and COPYING for more details.
17 */
18
19 #include "includes.h"
20 #include <sys/ioctl.h>
21 #include <net/if.h>
22 #include <netlink/genl/genl.h>
23 #include <netlink/genl/family.h>
24 #include <netlink/genl/ctrl.h>
25 #include <netpacket/packet.h>
26 #include <linux/filter.h>
27 #include "nl80211_copy.h"
28
29 #include "common.h"
30 #include "eloop.h"
31 #include "common/ieee802_11_defs.h"
32 #include "netlink.h"
33 #include "linux_ioctl.h"
34 #include "radiotap.h"
35 #include "radiotap_iter.h"
36 #include "rfkill.h"
37 #include "driver.h"
38
39 #ifdef CONFIG_LIBNL20
40 /* libnl 2.0 compatibility code */
41 #define nl_handle nl_sock
42 #define nl_handle_alloc_cb nl_socket_alloc_cb
43 #define nl_handle_destroy nl_socket_free
44 #endif /* CONFIG_LIBNL20 */
45
46
47 #ifndef IFF_LOWER_UP
48 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
49 #endif
50 #ifndef IFF_DORMANT
51 #define IFF_DORMANT 0x20000 /* driver signals dormant */
52 #endif
53
54 #ifndef IF_OPER_DORMANT
55 #define IF_OPER_DORMANT 5
56 #endif
57 #ifndef IF_OPER_UP
58 #define IF_OPER_UP 6
59 #endif
60
61 struct i802_bss {
62 struct wpa_driver_nl80211_data *drv;
63 struct i802_bss *next;
64 int ifindex;
65 char ifname[IFNAMSIZ + 1];
66 unsigned int beacon_set:1;
67 };
68
69 struct wpa_driver_nl80211_data {
70 void *ctx;
71 struct netlink_data *netlink;
72 int ioctl_sock; /* socket for ioctl() use */
73 char brname[IFNAMSIZ];
74 int ifindex;
75 int if_removed;
76 int if_disabled;
77 struct rfkill_data *rfkill;
78 struct wpa_driver_capa capa;
79 int has_capability;
80
81 int operstate;
82
83 int scan_complete_events;
84
85 struct nl_handle *nl_handle;
86 struct nl_handle *nl_handle_event;
87 struct nl_cache *nl_cache;
88 struct nl_cache *nl_cache_event;
89 struct nl_cb *nl_cb;
90 struct genl_family *nl80211;
91
92 u8 auth_bssid[ETH_ALEN];
93 u8 bssid[ETH_ALEN];
94 int associated;
95 u8 ssid[32];
96 size_t ssid_len;
97 int nlmode;
98 int ap_scan_as_station;
99 unsigned int assoc_freq;
100
101 int monitor_sock;
102 int monitor_ifidx;
103 int probe_req_report;
104 int disable_11b_rates;
105
106 unsigned int pending_remain_on_chan:1;
107 unsigned int pending_send_action:1;
108 unsigned int added_bridge:1;
109 unsigned int added_if_into_bridge:1;
110
111 u64 remain_on_chan_cookie;
112 u64 send_action_cookie;
113
114 struct wpa_driver_scan_filter *filter_ssids;
115 size_t num_filter_ssids;
116
117 struct i802_bss first_bss;
118
119 #ifdef HOSTAPD
120 int eapol_sock; /* socket for EAPOL frames */
121
122 int default_if_indices[16];
123 int *if_indices;
124 int num_if_indices;
125
126 int last_freq;
127 int last_freq_ht;
128 #endif /* HOSTAPD */
129 };
130
131
132 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
133 void *timeout_ctx);
134 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
135 static int
136 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
137 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
138 const u8 *addr, int cmd, u16 reason_code,
139 int local_state_change);
140 static void nl80211_remove_monitor_interface(
141 struct wpa_driver_nl80211_data *drv);
142
143 #ifdef HOSTAPD
144 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
145 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
146 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
147 static int wpa_driver_nl80211_if_remove(void *priv,
148 enum wpa_driver_if_type type,
149 const char *ifname);
150 #else /* HOSTAPD */
151 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
152 {
153 return 0;
154 }
155 #endif /* HOSTAPD */
156
157 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
158 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
159 void *timeout_ctx);
160 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
161 int ifindex, int disabled);
162
163
164 /* nl80211 code */
165 static int ack_handler(struct nl_msg *msg, void *arg)
166 {
167 int *err = arg;
168 *err = 0;
169 return NL_STOP;
170 }
171
172 static int finish_handler(struct nl_msg *msg, void *arg)
173 {
174 int *ret = arg;
175 *ret = 0;
176 return NL_SKIP;
177 }
178
179 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
180 void *arg)
181 {
182 int *ret = arg;
183 *ret = err->error;
184 return NL_SKIP;
185 }
186
187
188 static int no_seq_check(struct nl_msg *msg, void *arg)
189 {
190 return NL_OK;
191 }
192
193
194 static int send_and_recv(struct wpa_driver_nl80211_data *drv,
195 struct nl_handle *nl_handle, struct nl_msg *msg,
196 int (*valid_handler)(struct nl_msg *, void *),
197 void *valid_data)
198 {
199 struct nl_cb *cb;
200 int err = -ENOMEM;
201
202 cb = nl_cb_clone(drv->nl_cb);
203 if (!cb)
204 goto out;
205
206 err = nl_send_auto_complete(nl_handle, msg);
207 if (err < 0)
208 goto out;
209
210 err = 1;
211
212 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
213 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
214 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
215
216 if (valid_handler)
217 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
218 valid_handler, valid_data);
219
220 while (err > 0)
221 nl_recvmsgs(nl_handle, cb);
222 out:
223 nl_cb_put(cb);
224 nlmsg_free(msg);
225 return err;
226 }
227
228
229 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
230 struct nl_msg *msg,
231 int (*valid_handler)(struct nl_msg *, void *),
232 void *valid_data)
233 {
234 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
235 valid_data);
236 }
237
238
239 struct family_data {
240 const char *group;
241 int id;
242 };
243
244
245 static int family_handler(struct nl_msg *msg, void *arg)
246 {
247 struct family_data *res = arg;
248 struct nlattr *tb[CTRL_ATTR_MAX + 1];
249 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
250 struct nlattr *mcgrp;
251 int i;
252
253 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
254 genlmsg_attrlen(gnlh, 0), NULL);
255 if (!tb[CTRL_ATTR_MCAST_GROUPS])
256 return NL_SKIP;
257
258 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
259 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
260 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
261 nla_len(mcgrp), NULL);
262 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
263 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
264 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
265 res->group,
266 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
267 continue;
268 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
269 break;
270 };
271
272 return NL_SKIP;
273 }
274
275
276 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
277 const char *family, const char *group)
278 {
279 struct nl_msg *msg;
280 int ret = -1;
281 struct family_data res = { group, -ENOENT };
282
283 msg = nlmsg_alloc();
284 if (!msg)
285 return -ENOMEM;
286 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
287 0, 0, CTRL_CMD_GETFAMILY, 0);
288 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
289
290 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
291 msg = NULL;
292 if (ret == 0)
293 ret = res.id;
294
295 nla_put_failure:
296 nlmsg_free(msg);
297 return ret;
298 }
299
300
301 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
302 {
303 struct i802_bss *bss = priv;
304 struct wpa_driver_nl80211_data *drv = bss->drv;
305 if (!drv->associated)
306 return -1;
307 os_memcpy(bssid, drv->bssid, ETH_ALEN);
308 return 0;
309 }
310
311
312 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
313 {
314 struct i802_bss *bss = priv;
315 struct wpa_driver_nl80211_data *drv = bss->drv;
316 if (!drv->associated)
317 return -1;
318 os_memcpy(ssid, drv->ssid, drv->ssid_len);
319 return drv->ssid_len;
320 }
321
322
323 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
324 char *buf, size_t len, int del)
325 {
326 union wpa_event_data event;
327
328 os_memset(&event, 0, sizeof(event));
329 if (len > sizeof(event.interface_status.ifname))
330 len = sizeof(event.interface_status.ifname) - 1;
331 os_memcpy(event.interface_status.ifname, buf, len);
332 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
333 EVENT_INTERFACE_ADDED;
334
335 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
336 del ? "DEL" : "NEW",
337 event.interface_status.ifname,
338 del ? "removed" : "added");
339
340 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
341 if (del)
342 drv->if_removed = 1;
343 else
344 drv->if_removed = 0;
345 }
346
347 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
348 }
349
350
351 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
352 u8 *buf, size_t len)
353 {
354 int attrlen, rta_len;
355 struct rtattr *attr;
356
357 attrlen = len;
358 attr = (struct rtattr *) buf;
359
360 rta_len = RTA_ALIGN(sizeof(struct rtattr));
361 while (RTA_OK(attr, attrlen)) {
362 if (attr->rta_type == IFLA_IFNAME) {
363 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
364 == 0)
365 return 1;
366 else
367 break;
368 }
369 attr = RTA_NEXT(attr, attrlen);
370 }
371
372 return 0;
373 }
374
375
376 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
377 int ifindex, u8 *buf, size_t len)
378 {
379 if (drv->ifindex == ifindex)
380 return 1;
381
382 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
383 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
384 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
385 "interface");
386 wpa_driver_nl80211_finish_drv_init(drv);
387 return 1;
388 }
389
390 return 0;
391 }
392
393
394 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
395 struct ifinfomsg *ifi,
396 u8 *buf, size_t len)
397 {
398 struct wpa_driver_nl80211_data *drv = ctx;
399 int attrlen, rta_len;
400 struct rtattr *attr;
401 u32 brid = 0;
402
403 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
404 !have_ifidx(drv, ifi->ifi_index)) {
405 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
406 "ifindex %d", ifi->ifi_index);
407 return;
408 }
409
410 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
411 "(%s%s%s%s)",
412 drv->operstate, ifi->ifi_flags,
413 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
414 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
415 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
416 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
417
418 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
419 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
420 drv->if_disabled = 1;
421 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
422 }
423
424 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
425 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
426 drv->if_disabled = 0;
427 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
428 }
429
430 /*
431 * Some drivers send the association event before the operup event--in
432 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
433 * fails. This will hit us when wpa_supplicant does not need to do
434 * IEEE 802.1X authentication
435 */
436 if (drv->operstate == 1 &&
437 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
438 !(ifi->ifi_flags & IFF_RUNNING))
439 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
440 -1, IF_OPER_UP);
441
442 attrlen = len;
443 attr = (struct rtattr *) buf;
444 rta_len = RTA_ALIGN(sizeof(struct rtattr));
445 while (RTA_OK(attr, attrlen)) {
446 if (attr->rta_type == IFLA_IFNAME) {
447 wpa_driver_nl80211_event_link(
448 drv,
449 ((char *) attr) + rta_len,
450 attr->rta_len - rta_len, 0);
451 } else if (attr->rta_type == IFLA_MASTER)
452 brid = nla_get_u32((struct nlattr *) attr);
453 attr = RTA_NEXT(attr, attrlen);
454 }
455
456 #ifdef HOSTAPD
457 if (ifi->ifi_family == AF_BRIDGE && brid) {
458 /* device has been added to bridge */
459 char namebuf[IFNAMSIZ];
460 if_indextoname(brid, namebuf);
461 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
462 brid, namebuf);
463 add_ifidx(drv, brid);
464 }
465 #endif /* HOSTAPD */
466 }
467
468
469 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
470 struct ifinfomsg *ifi,
471 u8 *buf, size_t len)
472 {
473 struct wpa_driver_nl80211_data *drv = ctx;
474 int attrlen, rta_len;
475 struct rtattr *attr;
476 u32 brid = 0;
477
478 attrlen = len;
479 attr = (struct rtattr *) buf;
480
481 rta_len = RTA_ALIGN(sizeof(struct rtattr));
482 while (RTA_OK(attr, attrlen)) {
483 if (attr->rta_type == IFLA_IFNAME) {
484 wpa_driver_nl80211_event_link(
485 drv,
486 ((char *) attr) + rta_len,
487 attr->rta_len - rta_len, 1);
488 } else if (attr->rta_type == IFLA_MASTER)
489 brid = nla_get_u32((struct nlattr *) attr);
490 attr = RTA_NEXT(attr, attrlen);
491 }
492
493 #ifdef HOSTAPD
494 if (ifi->ifi_family == AF_BRIDGE && brid) {
495 /* device has been removed from bridge */
496 char namebuf[IFNAMSIZ];
497 if_indextoname(brid, namebuf);
498 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
499 "%s", brid, namebuf);
500 del_ifidx(drv, brid);
501 }
502 #endif /* HOSTAPD */
503 }
504
505
506 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
507 const u8 *frame, size_t len)
508 {
509 const struct ieee80211_mgmt *mgmt;
510 union wpa_event_data event;
511
512 mgmt = (const struct ieee80211_mgmt *) frame;
513 if (len < 24 + sizeof(mgmt->u.auth)) {
514 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
515 "frame");
516 return;
517 }
518
519 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
520 os_memset(&event, 0, sizeof(event));
521 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
522 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
523 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
524 if (len > 24 + sizeof(mgmt->u.auth)) {
525 event.auth.ies = mgmt->u.auth.variable;
526 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
527 }
528
529 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
530 }
531
532
533 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
534 const u8 *frame, size_t len)
535 {
536 const struct ieee80211_mgmt *mgmt;
537 union wpa_event_data event;
538 u16 status;
539
540 mgmt = (const struct ieee80211_mgmt *) frame;
541 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
542 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
543 "frame");
544 return;
545 }
546
547 status = le_to_host16(mgmt->u.assoc_resp.status_code);
548 if (status != WLAN_STATUS_SUCCESS) {
549 os_memset(&event, 0, sizeof(event));
550 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
551 event.assoc_reject.resp_ies =
552 (u8 *) mgmt->u.assoc_resp.variable;
553 event.assoc_reject.resp_ies_len =
554 len - 24 - sizeof(mgmt->u.assoc_resp);
555 }
556 event.assoc_reject.status_code = status;
557
558 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
559 return;
560 }
561
562 drv->associated = 1;
563 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
564
565 os_memset(&event, 0, sizeof(event));
566 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
567 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
568 event.assoc_info.resp_ies_len =
569 len - 24 - sizeof(mgmt->u.assoc_resp);
570 }
571
572 event.assoc_info.freq = drv->assoc_freq;
573
574 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
575 }
576
577
578 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
579 enum nl80211_commands cmd, struct nlattr *status,
580 struct nlattr *addr, struct nlattr *req_ie,
581 struct nlattr *resp_ie)
582 {
583 union wpa_event_data event;
584
585 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
586 /*
587 * Avoid reporting two association events that would confuse
588 * the core code.
589 */
590 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
591 "when using userspace SME", cmd);
592 return;
593 }
594
595 os_memset(&event, 0, sizeof(event));
596 if (cmd == NL80211_CMD_CONNECT &&
597 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
598 if (resp_ie) {
599 event.assoc_reject.resp_ies = nla_data(resp_ie);
600 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
601 }
602 event.assoc_reject.status_code = nla_get_u16(status);
603 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
604 return;
605 }
606
607 drv->associated = 1;
608 if (addr)
609 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
610
611 if (req_ie) {
612 event.assoc_info.req_ies = nla_data(req_ie);
613 event.assoc_info.req_ies_len = nla_len(req_ie);
614 }
615 if (resp_ie) {
616 event.assoc_info.resp_ies = nla_data(resp_ie);
617 event.assoc_info.resp_ies_len = nla_len(resp_ie);
618 }
619
620 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
621 }
622
623
624 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
625 enum nl80211_commands cmd, struct nlattr *addr)
626 {
627 union wpa_event_data event;
628 enum wpa_event_type ev;
629
630 if (nla_len(addr) != ETH_ALEN)
631 return;
632
633 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
634 cmd, MAC2STR((u8 *) nla_data(addr)));
635
636 if (cmd == NL80211_CMD_AUTHENTICATE)
637 ev = EVENT_AUTH_TIMED_OUT;
638 else if (cmd == NL80211_CMD_ASSOCIATE)
639 ev = EVENT_ASSOC_TIMED_OUT;
640 else
641 return;
642
643 os_memset(&event, 0, sizeof(event));
644 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
645 wpa_supplicant_event(drv->ctx, ev, &event);
646 }
647
648
649 static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
650 struct nlattr *freq, const u8 *frame, size_t len)
651 {
652 const struct ieee80211_mgmt *mgmt;
653 union wpa_event_data event;
654 u16 fc, stype;
655
656 mgmt = (const struct ieee80211_mgmt *) frame;
657 if (len < 24) {
658 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
659 return;
660 }
661
662 fc = le_to_host16(mgmt->frame_control);
663 stype = WLAN_FC_GET_STYPE(fc);
664
665 os_memset(&event, 0, sizeof(event));
666 event.rx_action.da = mgmt->da;
667 event.rx_action.sa = mgmt->sa;
668 event.rx_action.bssid = mgmt->bssid;
669 event.rx_action.category = mgmt->u.action.category;
670 event.rx_action.data = &mgmt->u.action.category + 1;
671 event.rx_action.len = frame + len - event.rx_action.data;
672 if (freq)
673 event.rx_action.freq = nla_get_u32(freq);
674 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
675 }
676
677
678 static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
679 struct nlattr *cookie, const u8 *frame,
680 size_t len, struct nlattr *ack)
681 {
682 union wpa_event_data event;
683 const struct ieee80211_hdr *hdr;
684 u16 fc;
685 u64 cookie_val;
686
687 if (!cookie)
688 return;
689
690 cookie_val = nla_get_u64(cookie);
691 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
692 "(ack=%d)",
693 (long long unsigned int) cookie_val,
694 cookie_val == drv->send_action_cookie ?
695 " (match)" : " (unknown)", ack != NULL);
696 if (cookie_val != drv->send_action_cookie)
697 return;
698
699 hdr = (const struct ieee80211_hdr *) frame;
700 fc = le_to_host16(hdr->frame_control);
701
702 os_memset(&event, 0, sizeof(event));
703 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
704 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
705 event.tx_status.dst = hdr->addr1;
706 event.tx_status.data = frame;
707 event.tx_status.data_len = len;
708 event.tx_status.ack = ack != NULL;
709 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
710 }
711
712
713 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
714 enum wpa_event_type type,
715 const u8 *frame, size_t len)
716 {
717 const struct ieee80211_mgmt *mgmt;
718 union wpa_event_data event;
719 const u8 *bssid = NULL;
720 u16 reason_code = 0;
721
722 drv->associated = 0;
723 os_memset(&event, 0, sizeof(event));
724
725 mgmt = (const struct ieee80211_mgmt *) frame;
726 if (len >= 24)
727 bssid = mgmt->bssid;
728 /* Note: Same offset for Reason Code in both frame subtypes */
729 if (len >= 24 + sizeof(mgmt->u.deauth))
730 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
731
732 if (type == EVENT_DISASSOC) {
733 event.disassoc_info.addr = bssid;
734 event.disassoc_info.reason_code = reason_code;
735 } else {
736 event.deauth_info.addr = bssid;
737 event.deauth_info.reason_code = reason_code;
738 }
739
740 wpa_supplicant_event(drv->ctx, type, &event);
741 }
742
743
744 static void mlme_event(struct wpa_driver_nl80211_data *drv,
745 enum nl80211_commands cmd, struct nlattr *frame,
746 struct nlattr *addr, struct nlattr *timed_out,
747 struct nlattr *freq, struct nlattr *ack,
748 struct nlattr *cookie)
749 {
750 if (timed_out && addr) {
751 mlme_timeout_event(drv, cmd, addr);
752 return;
753 }
754
755 if (frame == NULL) {
756 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
757 "data", cmd);
758 return;
759 }
760
761 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
762 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
763 nla_data(frame), nla_len(frame));
764
765 switch (cmd) {
766 case NL80211_CMD_AUTHENTICATE:
767 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
768 break;
769 case NL80211_CMD_ASSOCIATE:
770 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
771 break;
772 case NL80211_CMD_DEAUTHENTICATE:
773 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
774 nla_data(frame), nla_len(frame));
775 break;
776 case NL80211_CMD_DISASSOCIATE:
777 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
778 nla_data(frame), nla_len(frame));
779 break;
780 case NL80211_CMD_ACTION:
781 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
782 break;
783 case NL80211_CMD_ACTION_TX_STATUS:
784 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
785 nla_len(frame), ack);
786 break;
787 default:
788 break;
789 }
790 }
791
792
793 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
794 struct nlattr *tb[])
795 {
796 union wpa_event_data data;
797
798 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
799 os_memset(&data, 0, sizeof(data));
800 if (tb[NL80211_ATTR_MAC]) {
801 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
802 nla_data(tb[NL80211_ATTR_MAC]),
803 nla_len(tb[NL80211_ATTR_MAC]));
804 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
805 }
806 if (tb[NL80211_ATTR_KEY_SEQ]) {
807 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
808 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
809 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
810 }
811 if (tb[NL80211_ATTR_KEY_TYPE]) {
812 enum nl80211_key_type key_type =
813 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
814 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
815 if (key_type == NL80211_KEYTYPE_PAIRWISE)
816 data.michael_mic_failure.unicast = 1;
817 } else
818 data.michael_mic_failure.unicast = 1;
819
820 if (tb[NL80211_ATTR_KEY_IDX]) {
821 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
822 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
823 }
824
825 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
826 }
827
828
829 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
830 struct nlattr *tb[])
831 {
832 if (tb[NL80211_ATTR_MAC] == NULL) {
833 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
834 "event");
835 return;
836 }
837 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
838 drv->associated = 1;
839 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
840 MAC2STR(drv->bssid));
841
842 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
843 }
844
845
846 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
847 int cancel_event, struct nlattr *tb[])
848 {
849 unsigned int freq, chan_type, duration;
850 union wpa_event_data data;
851 u64 cookie;
852
853 if (tb[NL80211_ATTR_WIPHY_FREQ])
854 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
855 else
856 freq = 0;
857
858 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
859 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
860 else
861 chan_type = 0;
862
863 if (tb[NL80211_ATTR_DURATION])
864 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
865 else
866 duration = 0;
867
868 if (tb[NL80211_ATTR_COOKIE])
869 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
870 else
871 cookie = 0;
872
873 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
874 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
875 cancel_event, freq, chan_type, duration,
876 (long long unsigned int) cookie,
877 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
878
879 if (cookie != drv->remain_on_chan_cookie)
880 return; /* not for us */
881
882 drv->pending_remain_on_chan = !cancel_event;
883
884 os_memset(&data, 0, sizeof(data));
885 data.remain_on_channel.freq = freq;
886 data.remain_on_channel.duration = duration;
887 wpa_supplicant_event(drv->ctx, cancel_event ?
888 EVENT_CANCEL_REMAIN_ON_CHANNEL :
889 EVENT_REMAIN_ON_CHANNEL, &data);
890 }
891
892
893 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
894 struct nlattr *tb[])
895 {
896 union wpa_event_data event;
897 struct nlattr *nl;
898 int rem;
899 struct scan_info *info;
900 #define MAX_REPORT_FREQS 50
901 int freqs[MAX_REPORT_FREQS];
902 int num_freqs = 0;
903
904 os_memset(&event, 0, sizeof(event));
905 info = &event.scan_info;
906 info->aborted = aborted;
907
908 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
909 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
910 struct wpa_driver_scan_ssid *s =
911 &info->ssids[info->num_ssids];
912 s->ssid = nla_data(nl);
913 s->ssid_len = nla_len(nl);
914 info->num_ssids++;
915 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
916 break;
917 }
918 }
919 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
920 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
921 {
922 freqs[num_freqs] = nla_get_u32(nl);
923 num_freqs++;
924 if (num_freqs == MAX_REPORT_FREQS - 1)
925 break;
926 }
927 info->freqs = freqs;
928 info->num_freqs = num_freqs;
929 }
930 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
931 }
932
933
934 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
935 struct nlattr *tb[])
936 {
937 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
938 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
939 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
940 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
941 };
942 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
943 enum nl80211_cqm_rssi_threshold_event event;
944 union wpa_event_data ed;
945
946 if (tb[NL80211_ATTR_CQM] == NULL ||
947 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
948 cqm_policy)) {
949 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
950 return;
951 }
952
953 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
954 return;
955 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
956
957 os_memset(&ed, 0, sizeof(ed));
958
959 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
960 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
961 "event: RSSI high");
962 ed.signal_change.above_threshold = 1;
963 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
964 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
965 "event: RSSI low");
966 ed.signal_change.above_threshold = 0;
967 } else
968 return;
969
970 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
971 }
972
973
974 static int process_event(struct nl_msg *msg, void *arg)
975 {
976 struct wpa_driver_nl80211_data *drv = arg;
977 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
978 struct nlattr *tb[NL80211_ATTR_MAX + 1];
979 union wpa_event_data data;
980
981 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
982 genlmsg_attrlen(gnlh, 0), NULL);
983
984 if (tb[NL80211_ATTR_IFINDEX]) {
985 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
986 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
987 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
988 " for foreign interface (ifindex %d)",
989 gnlh->cmd, ifindex);
990 return NL_SKIP;
991 }
992 }
993
994 if (drv->ap_scan_as_station &&
995 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
996 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
997 wpa_driver_nl80211_set_mode(&drv->first_bss,
998 IEEE80211_MODE_AP);
999 drv->ap_scan_as_station = 0;
1000 }
1001
1002 switch (gnlh->cmd) {
1003 case NL80211_CMD_TRIGGER_SCAN:
1004 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1005 break;
1006 case NL80211_CMD_NEW_SCAN_RESULTS:
1007 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1008 drv->scan_complete_events = 1;
1009 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1010 drv->ctx);
1011 send_scan_event(drv, 0, tb);
1012 break;
1013 case NL80211_CMD_SCAN_ABORTED:
1014 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1015 /*
1016 * Need to indicate that scan results are available in order
1017 * not to make wpa_supplicant stop its scanning.
1018 */
1019 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1020 drv->ctx);
1021 send_scan_event(drv, 1, tb);
1022 break;
1023 case NL80211_CMD_AUTHENTICATE:
1024 case NL80211_CMD_ASSOCIATE:
1025 case NL80211_CMD_DEAUTHENTICATE:
1026 case NL80211_CMD_DISASSOCIATE:
1027 case NL80211_CMD_ACTION:
1028 case NL80211_CMD_ACTION_TX_STATUS:
1029 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
1030 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1031 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1032 tb[NL80211_ATTR_COOKIE]);
1033 break;
1034 case NL80211_CMD_CONNECT:
1035 case NL80211_CMD_ROAM:
1036 mlme_event_connect(drv, gnlh->cmd,
1037 tb[NL80211_ATTR_STATUS_CODE],
1038 tb[NL80211_ATTR_MAC],
1039 tb[NL80211_ATTR_REQ_IE],
1040 tb[NL80211_ATTR_RESP_IE]);
1041 break;
1042 case NL80211_CMD_DISCONNECT:
1043 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1044 /*
1045 * Avoid reporting two disassociation events that could
1046 * confuse the core code.
1047 */
1048 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1049 "event when using userspace SME");
1050 break;
1051 }
1052 drv->associated = 0;
1053 os_memset(&data, 0, sizeof(data));
1054 if (tb[NL80211_ATTR_REASON_CODE])
1055 data.disassoc_info.reason_code =
1056 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1057 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1058 break;
1059 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1060 mlme_event_michael_mic_failure(drv, tb);
1061 break;
1062 case NL80211_CMD_JOIN_IBSS:
1063 mlme_event_join_ibss(drv, tb);
1064 break;
1065 case NL80211_CMD_REMAIN_ON_CHANNEL:
1066 mlme_event_remain_on_channel(drv, 0, tb);
1067 break;
1068 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1069 mlme_event_remain_on_channel(drv, 1, tb);
1070 break;
1071 case NL80211_CMD_NOTIFY_CQM:
1072 nl80211_cqm_event(drv, tb);
1073 break;
1074 default:
1075 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1076 "(cmd=%d)", gnlh->cmd);
1077 break;
1078 }
1079
1080 return NL_SKIP;
1081 }
1082
1083
1084 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1085 void *sock_ctx)
1086 {
1087 struct nl_cb *cb;
1088 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1089
1090 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1091
1092 cb = nl_cb_clone(drv->nl_cb);
1093 if (!cb)
1094 return;
1095 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1096 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
1097 nl_recvmsgs(drv->nl_handle_event, cb);
1098 nl_cb_put(cb);
1099 }
1100
1101
1102 /**
1103 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1104 * @priv: driver_nl80211 private data
1105 * @alpha2_arg: country to which to switch to
1106 * Returns: 0 on success, -1 on failure
1107 *
1108 * This asks nl80211 to set the regulatory domain for given
1109 * country ISO / IEC alpha2.
1110 */
1111 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1112 {
1113 struct i802_bss *bss = priv;
1114 struct wpa_driver_nl80211_data *drv = bss->drv;
1115 char alpha2[3];
1116 struct nl_msg *msg;
1117
1118 msg = nlmsg_alloc();
1119 if (!msg)
1120 return -ENOMEM;
1121
1122 alpha2[0] = alpha2_arg[0];
1123 alpha2[1] = alpha2_arg[1];
1124 alpha2[2] = '\0';
1125
1126 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1127 0, NL80211_CMD_REQ_SET_REG, 0);
1128
1129 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1130 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1131 return -EINVAL;
1132 return 0;
1133 nla_put_failure:
1134 return -EINVAL;
1135 }
1136
1137
1138 #ifndef HOSTAPD
1139 struct wiphy_info_data {
1140 int max_scan_ssids;
1141 int ap_supported;
1142 int auth_supported;
1143 int connect_supported;
1144 };
1145
1146
1147 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1148 {
1149 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1150 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1151 struct wiphy_info_data *info = arg;
1152
1153 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1154 genlmsg_attrlen(gnlh, 0), NULL);
1155
1156 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1157 info->max_scan_ssids =
1158 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1159
1160 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1161 struct nlattr *nl_mode;
1162 int i;
1163 nla_for_each_nested(nl_mode,
1164 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1165 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1166 info->ap_supported = 1;
1167 break;
1168 }
1169 }
1170 }
1171
1172 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1173 struct nlattr *nl_cmd;
1174 int i;
1175
1176 nla_for_each_nested(nl_cmd,
1177 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1178 u32 cmd = nla_get_u32(nl_cmd);
1179 if (cmd == NL80211_CMD_AUTHENTICATE)
1180 info->auth_supported = 1;
1181 else if (cmd == NL80211_CMD_CONNECT)
1182 info->connect_supported = 1;
1183 }
1184 }
1185
1186 return NL_SKIP;
1187 }
1188
1189
1190 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1191 struct wiphy_info_data *info)
1192 {
1193 struct nl_msg *msg;
1194
1195 os_memset(info, 0, sizeof(*info));
1196 msg = nlmsg_alloc();
1197 if (!msg)
1198 return -1;
1199
1200 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1201 0, NL80211_CMD_GET_WIPHY, 0);
1202
1203 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
1204
1205 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1206 return 0;
1207 msg = NULL;
1208 nla_put_failure:
1209 nlmsg_free(msg);
1210 return -1;
1211 }
1212
1213
1214 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1215 {
1216 struct wiphy_info_data info;
1217 if (wpa_driver_nl80211_get_info(drv, &info))
1218 return -1;
1219 drv->has_capability = 1;
1220 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1221 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1222 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1223 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1224 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1225 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1226 WPA_DRIVER_CAPA_ENC_WEP104 |
1227 WPA_DRIVER_CAPA_ENC_TKIP |
1228 WPA_DRIVER_CAPA_ENC_CCMP;
1229 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1230 WPA_DRIVER_AUTH_SHARED |
1231 WPA_DRIVER_AUTH_LEAP;
1232
1233 drv->capa.max_scan_ssids = info.max_scan_ssids;
1234 if (info.ap_supported)
1235 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1236
1237 if (info.auth_supported)
1238 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1239 else if (!info.connect_supported) {
1240 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1241 "authentication/association or connect commands");
1242 return -1;
1243 }
1244
1245 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1246 drv->capa.max_remain_on_chan = 5000;
1247
1248 return 0;
1249 }
1250 #endif /* HOSTAPD */
1251
1252
1253 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1254 void *ctx)
1255 {
1256 int ret;
1257
1258 /* Initialize generic netlink and nl80211 */
1259
1260 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1261 if (drv->nl_cb == NULL) {
1262 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1263 "callbacks");
1264 goto err1;
1265 }
1266
1267 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1268 if (drv->nl_handle == NULL) {
1269 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1270 "callbacks");
1271 goto err2;
1272 }
1273
1274 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1275 if (drv->nl_handle_event == NULL) {
1276 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1277 "callbacks (event)");
1278 goto err2b;
1279 }
1280
1281 if (genl_connect(drv->nl_handle)) {
1282 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1283 "netlink");
1284 goto err3;
1285 }
1286
1287 if (genl_connect(drv->nl_handle_event)) {
1288 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1289 "netlink (event)");
1290 goto err3;
1291 }
1292
1293 #ifdef CONFIG_LIBNL20
1294 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1295 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1296 "netlink cache");
1297 goto err3;
1298 }
1299 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1300 0) {
1301 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1302 "netlink cache (event)");
1303 goto err3b;
1304 }
1305 #else /* CONFIG_LIBNL20 */
1306 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1307 if (drv->nl_cache == NULL) {
1308 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1309 "netlink cache");
1310 goto err3;
1311 }
1312 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1313 if (drv->nl_cache_event == NULL) {
1314 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1315 "netlink cache (event)");
1316 goto err3b;
1317 }
1318 #endif /* CONFIG_LIBNL20 */
1319
1320 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1321 if (drv->nl80211 == NULL) {
1322 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1323 "found");
1324 goto err4;
1325 }
1326
1327 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1328 if (ret >= 0)
1329 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1330 if (ret < 0) {
1331 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1332 "membership for scan events: %d (%s)",
1333 ret, strerror(-ret));
1334 goto err4;
1335 }
1336
1337 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1338 if (ret >= 0)
1339 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1340 if (ret < 0) {
1341 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1342 "membership for mlme events: %d (%s)",
1343 ret, strerror(-ret));
1344 goto err4;
1345 }
1346
1347 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1348 wpa_driver_nl80211_event_receive, drv, ctx);
1349
1350 return 0;
1351
1352 err4:
1353 nl_cache_free(drv->nl_cache_event);
1354 err3b:
1355 nl_cache_free(drv->nl_cache);
1356 err3:
1357 nl_handle_destroy(drv->nl_handle_event);
1358 err2b:
1359 nl_handle_destroy(drv->nl_handle);
1360 err2:
1361 nl_cb_put(drv->nl_cb);
1362 err1:
1363 return -1;
1364 }
1365
1366
1367 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1368 {
1369 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
1370 /*
1371 * This may be for any interface; use ifdown event to disable
1372 * interface.
1373 */
1374 }
1375
1376
1377 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1378 {
1379 struct wpa_driver_nl80211_data *drv = ctx;
1380 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1381 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1382 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1383 "after rfkill unblock");
1384 return;
1385 }
1386 /* rtnetlink ifup handler will report interface as enabled */
1387 }
1388
1389
1390 /**
1391 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1392 * @ctx: context to be used when calling wpa_supplicant functions,
1393 * e.g., wpa_supplicant_event()
1394 * @ifname: interface name, e.g., wlan0
1395 * Returns: Pointer to private data, %NULL on failure
1396 */
1397 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1398 {
1399 struct wpa_driver_nl80211_data *drv;
1400 struct netlink_config *cfg;
1401 struct rfkill_config *rcfg;
1402 struct i802_bss *bss;
1403
1404 drv = os_zalloc(sizeof(*drv));
1405 if (drv == NULL)
1406 return NULL;
1407 drv->ctx = ctx;
1408 bss = &drv->first_bss;
1409 bss->drv = drv;
1410 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
1411 drv->monitor_ifidx = -1;
1412 drv->monitor_sock = -1;
1413 drv->ioctl_sock = -1;
1414
1415 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1416 os_free(drv);
1417 return NULL;
1418 }
1419
1420 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1421 if (drv->ioctl_sock < 0) {
1422 perror("socket(PF_INET,SOCK_DGRAM)");
1423 goto failed;
1424 }
1425
1426 cfg = os_zalloc(sizeof(*cfg));
1427 if (cfg == NULL)
1428 goto failed;
1429 cfg->ctx = drv;
1430 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1431 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1432 drv->netlink = netlink_init(cfg);
1433 if (drv->netlink == NULL) {
1434 os_free(cfg);
1435 goto failed;
1436 }
1437
1438 rcfg = os_zalloc(sizeof(*rcfg));
1439 if (rcfg == NULL)
1440 goto failed;
1441 rcfg->ctx = drv;
1442 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1443 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1444 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1445 drv->rfkill = rfkill_init(rcfg);
1446 if (drv->rfkill == NULL) {
1447 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
1448 os_free(rcfg);
1449 }
1450
1451 if (wpa_driver_nl80211_finish_drv_init(drv))
1452 goto failed;
1453
1454 return bss;
1455
1456 failed:
1457 rfkill_deinit(drv->rfkill);
1458 netlink_deinit(drv->netlink);
1459 if (drv->ioctl_sock >= 0)
1460 close(drv->ioctl_sock);
1461
1462 genl_family_put(drv->nl80211);
1463 nl_cache_free(drv->nl_cache);
1464 nl_handle_destroy(drv->nl_handle);
1465 nl_cb_put(drv->nl_cb);
1466 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1467
1468 os_free(drv);
1469 return NULL;
1470 }
1471
1472
1473 static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1474 const u8 *match, size_t match_len)
1475 {
1476 struct nl_msg *msg;
1477 int ret = -1;
1478
1479 msg = nlmsg_alloc();
1480 if (!msg)
1481 return -1;
1482
1483 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1484 NL80211_CMD_REGISTER_ACTION, 0);
1485
1486 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1487 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1488
1489 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1490 msg = NULL;
1491 if (ret) {
1492 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1493 "failed: ret=%d (%s)", ret, strerror(-ret));
1494 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1495 match, match_len);
1496 goto nla_put_failure;
1497 }
1498 ret = 0;
1499 nla_put_failure:
1500 nlmsg_free(msg);
1501 return ret;
1502 }
1503
1504
1505 static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1506 {
1507 /* FT Action frames */
1508 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1509 return -1;
1510 else
1511 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1512 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1513
1514 return 0;
1515 }
1516
1517
1518 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1519 {
1520 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1521 }
1522
1523
1524 static int
1525 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1526 {
1527 struct i802_bss *bss = &drv->first_bss;
1528 int send_rfkill_event = 0;
1529
1530 drv->ifindex = if_nametoindex(bss->ifname);
1531 drv->first_bss.ifindex = drv->ifindex;
1532
1533 #ifndef HOSTAPD
1534 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
1535 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1536 "use managed mode");
1537 }
1538
1539 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
1540 if (rfkill_is_blocked(drv->rfkill)) {
1541 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1542 "interface '%s' due to rfkill",
1543 bss->ifname);
1544 drv->if_disabled = 1;
1545 send_rfkill_event = 1;
1546 } else {
1547 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1548 "interface '%s' UP", bss->ifname);
1549 return -1;
1550 }
1551 }
1552
1553 if (wpa_driver_nl80211_capa(drv))
1554 return -1;
1555
1556 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1557 1, IF_OPER_DORMANT);
1558 #endif /* HOSTAPD */
1559
1560 if (nl80211_register_action_frames(drv) < 0) {
1561 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1562 "frame processing - ignore for now");
1563 /*
1564 * Older kernel versions did not support this, so ignore the
1565 * error for now. Some functionality may not be available
1566 * because of this.
1567 */
1568 }
1569
1570 if (send_rfkill_event) {
1571 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1572 drv, drv->ctx);
1573 }
1574
1575 return 0;
1576 }
1577
1578
1579 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1580 {
1581 struct nl_msg *msg;
1582
1583 msg = nlmsg_alloc();
1584 if (!msg)
1585 return -ENOMEM;
1586
1587 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1588 0, NL80211_CMD_DEL_BEACON, 0);
1589 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1590
1591 return send_and_recv_msgs(drv, msg, NULL, NULL);
1592 nla_put_failure:
1593 return -ENOBUFS;
1594 }
1595
1596
1597 /**
1598 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1599 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1600 *
1601 * Shut down driver interface and processing of driver events. Free
1602 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1603 */
1604 static void wpa_driver_nl80211_deinit(void *priv)
1605 {
1606 struct i802_bss *bss = priv;
1607 struct wpa_driver_nl80211_data *drv = bss->drv;
1608
1609 if (drv->added_if_into_bridge) {
1610 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
1611 < 0)
1612 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1613 "interface %s from bridge %s: %s",
1614 bss->ifname, drv->brname, strerror(errno));
1615 }
1616 if (drv->added_bridge) {
1617 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1618 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1619 "bridge %s: %s",
1620 drv->brname, strerror(errno));
1621 }
1622
1623 nl80211_remove_monitor_interface(drv);
1624
1625 if (drv->nlmode == NL80211_IFTYPE_AP)
1626 wpa_driver_nl80211_del_beacon(drv);
1627
1628 #ifdef HOSTAPD
1629 if (drv->last_freq_ht) {
1630 /* Clear HT flags from the driver */
1631 struct hostapd_freq_params freq;
1632 os_memset(&freq, 0, sizeof(freq));
1633 freq.freq = drv->last_freq;
1634 i802_set_freq(priv, &freq);
1635 }
1636
1637 if (drv->eapol_sock >= 0) {
1638 eloop_unregister_read_sock(drv->eapol_sock);
1639 close(drv->eapol_sock);
1640 }
1641
1642 if (drv->if_indices != drv->default_if_indices)
1643 os_free(drv->if_indices);
1644 #endif /* HOSTAPD */
1645
1646 if (drv->disable_11b_rates)
1647 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1648
1649 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1650 netlink_deinit(drv->netlink);
1651 rfkill_deinit(drv->rfkill);
1652
1653 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1654
1655 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1656 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
1657
1658 if (drv->ioctl_sock >= 0)
1659 close(drv->ioctl_sock);
1660
1661 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1662 genl_family_put(drv->nl80211);
1663 nl_cache_free(drv->nl_cache);
1664 nl_cache_free(drv->nl_cache_event);
1665 nl_handle_destroy(drv->nl_handle);
1666 nl_handle_destroy(drv->nl_handle_event);
1667 nl_cb_put(drv->nl_cb);
1668
1669 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1670 drv, NULL);
1671
1672 os_free(drv->filter_ssids);
1673
1674 os_free(drv);
1675 }
1676
1677
1678 /**
1679 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1680 * @eloop_ctx: Driver private data
1681 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1682 *
1683 * This function can be used as registered timeout when starting a scan to
1684 * generate a scan completed event if the driver does not report this.
1685 */
1686 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1687 {
1688 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1689 if (drv->ap_scan_as_station) {
1690 wpa_driver_nl80211_set_mode(&drv->first_bss,
1691 IEEE80211_MODE_AP);
1692 drv->ap_scan_as_station = 0;
1693 }
1694 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1695 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1696 }
1697
1698
1699 /**
1700 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1701 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1702 * @params: Scan parameters
1703 * Returns: 0 on success, -1 on failure
1704 */
1705 static int wpa_driver_nl80211_scan(void *priv,
1706 struct wpa_driver_scan_params *params)
1707 {
1708 struct i802_bss *bss = priv;
1709 struct wpa_driver_nl80211_data *drv = bss->drv;
1710 int ret = 0, timeout;
1711 struct nl_msg *msg, *ssids, *freqs;
1712 size_t i;
1713
1714 msg = nlmsg_alloc();
1715 ssids = nlmsg_alloc();
1716 freqs = nlmsg_alloc();
1717 if (!msg || !ssids || !freqs) {
1718 nlmsg_free(msg);
1719 nlmsg_free(ssids);
1720 nlmsg_free(freqs);
1721 return -1;
1722 }
1723
1724 os_free(drv->filter_ssids);
1725 drv->filter_ssids = params->filter_ssids;
1726 params->filter_ssids = NULL;
1727 drv->num_filter_ssids = params->num_filter_ssids;
1728
1729 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1730 NL80211_CMD_TRIGGER_SCAN, 0);
1731
1732 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1733
1734 for (i = 0; i < params->num_ssids; i++) {
1735 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1736 params->ssids[i].ssid,
1737 params->ssids[i].ssid_len);
1738 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1739 params->ssids[i].ssid);
1740 }
1741 if (params->num_ssids)
1742 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1743
1744 if (params->extra_ies) {
1745 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1746 params->extra_ies, params->extra_ies_len);
1747 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1748 params->extra_ies);
1749 }
1750
1751 if (params->freqs) {
1752 for (i = 0; params->freqs[i]; i++) {
1753 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1754 "MHz", params->freqs[i]);
1755 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1756 }
1757 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1758 }
1759
1760 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1761 msg = NULL;
1762 if (ret) {
1763 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1764 "(%s)", ret, strerror(-ret));
1765 #ifdef HOSTAPD
1766 if (drv->nlmode == NL80211_IFTYPE_AP) {
1767 /*
1768 * mac80211 does not allow scan requests in AP mode, so
1769 * try to do this in station mode.
1770 */
1771 if (wpa_driver_nl80211_set_mode(bss,
1772 IEEE80211_MODE_INFRA))
1773 goto nla_put_failure;
1774
1775 if (wpa_driver_nl80211_scan(drv, params)) {
1776 wpa_driver_nl80211_set_mode(bss,
1777 IEEE80211_MODE_AP);
1778 goto nla_put_failure;
1779 }
1780
1781 /* Restore AP mode when processing scan results */
1782 drv->ap_scan_as_station = 1;
1783 ret = 0;
1784 } else
1785 goto nla_put_failure;
1786 #else /* HOSTAPD */
1787 goto nla_put_failure;
1788 #endif /* HOSTAPD */
1789 }
1790
1791 /* Not all drivers generate "scan completed" wireless event, so try to
1792 * read results after a timeout. */
1793 timeout = 10;
1794 if (drv->scan_complete_events) {
1795 /*
1796 * The driver seems to deliver events to notify when scan is
1797 * complete, so use longer timeout to avoid race conditions
1798 * with scanning and following association request.
1799 */
1800 timeout = 30;
1801 }
1802 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1803 "seconds", ret, timeout);
1804 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1805 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1806 drv, drv->ctx);
1807
1808 nla_put_failure:
1809 nlmsg_free(ssids);
1810 nlmsg_free(msg);
1811 nlmsg_free(freqs);
1812 return ret;
1813 }
1814
1815
1816 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1817 {
1818 const u8 *end, *pos;
1819
1820 if (ies == NULL)
1821 return NULL;
1822
1823 pos = ies;
1824 end = ies + ies_len;
1825
1826 while (pos + 1 < end) {
1827 if (pos + 2 + pos[1] > end)
1828 break;
1829 if (pos[0] == ie)
1830 return pos;
1831 pos += 2 + pos[1];
1832 }
1833
1834 return NULL;
1835 }
1836
1837
1838 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1839 const u8 *ie, size_t ie_len)
1840 {
1841 const u8 *ssid;
1842 size_t i;
1843
1844 if (drv->filter_ssids == NULL)
1845 return 0;
1846
1847 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1848 if (ssid == NULL)
1849 return 1;
1850
1851 for (i = 0; i < drv->num_filter_ssids; i++) {
1852 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1853 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1854 0)
1855 return 0;
1856 }
1857
1858 return 1;
1859 }
1860
1861
1862 struct nl80211_bss_info_arg {
1863 struct wpa_driver_nl80211_data *drv;
1864 struct wpa_scan_results *res;
1865 };
1866
1867 static int bss_info_handler(struct nl_msg *msg, void *arg)
1868 {
1869 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1870 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1871 struct nlattr *bss[NL80211_BSS_MAX + 1];
1872 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1873 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1874 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1875 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1876 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1877 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1878 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1879 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1880 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1881 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1882 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1883 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
1884 };
1885 struct nl80211_bss_info_arg *_arg = arg;
1886 struct wpa_scan_results *res = _arg->res;
1887 struct wpa_scan_res **tmp;
1888 struct wpa_scan_res *r;
1889 const u8 *ie, *beacon_ie;
1890 size_t ie_len, beacon_ie_len;
1891 u8 *pos;
1892
1893 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1894 genlmsg_attrlen(gnlh, 0), NULL);
1895 if (!tb[NL80211_ATTR_BSS])
1896 return NL_SKIP;
1897 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1898 bss_policy))
1899 return NL_SKIP;
1900 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1901 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1902 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1903 } else {
1904 ie = NULL;
1905 ie_len = 0;
1906 }
1907 if (bss[NL80211_BSS_BEACON_IES]) {
1908 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1909 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1910 } else {
1911 beacon_ie = NULL;
1912 beacon_ie_len = 0;
1913 }
1914
1915 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1916 ie ? ie_len : beacon_ie_len))
1917 return NL_SKIP;
1918
1919 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
1920 if (r == NULL)
1921 return NL_SKIP;
1922 if (bss[NL80211_BSS_BSSID])
1923 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1924 ETH_ALEN);
1925 if (bss[NL80211_BSS_FREQUENCY])
1926 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1927 if (bss[NL80211_BSS_BEACON_INTERVAL])
1928 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1929 if (bss[NL80211_BSS_CAPABILITY])
1930 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1931 r->flags |= WPA_SCAN_NOISE_INVALID;
1932 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1933 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1934 r->level /= 100; /* mBm to dBm */
1935 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1936 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1937 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1938 r->flags |= WPA_SCAN_LEVEL_INVALID;
1939 } else
1940 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1941 if (bss[NL80211_BSS_TSF])
1942 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1943 if (bss[NL80211_BSS_SEEN_MS_AGO])
1944 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1945 r->ie_len = ie_len;
1946 pos = (u8 *) (r + 1);
1947 if (ie) {
1948 os_memcpy(pos, ie, ie_len);
1949 pos += ie_len;
1950 }
1951 r->beacon_ie_len = beacon_ie_len;
1952 if (beacon_ie)
1953 os_memcpy(pos, beacon_ie, beacon_ie_len);
1954
1955 if (bss[NL80211_BSS_STATUS]) {
1956 enum nl80211_bss_status status;
1957 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1958 switch (status) {
1959 case NL80211_BSS_STATUS_AUTHENTICATED:
1960 r->flags |= WPA_SCAN_AUTHENTICATED;
1961 break;
1962 case NL80211_BSS_STATUS_ASSOCIATED:
1963 r->flags |= WPA_SCAN_ASSOCIATED;
1964 break;
1965 default:
1966 break;
1967 }
1968 }
1969
1970 tmp = os_realloc(res->res,
1971 (res->num + 1) * sizeof(struct wpa_scan_res *));
1972 if (tmp == NULL) {
1973 os_free(r);
1974 return NL_SKIP;
1975 }
1976 tmp[res->num++] = r;
1977 res->res = tmp;
1978
1979 return NL_SKIP;
1980 }
1981
1982
1983 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1984 const u8 *addr)
1985 {
1986 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1987 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1988 "mismatch (" MACSTR ")", MAC2STR(addr));
1989 wpa_driver_nl80211_mlme(drv, addr,
1990 NL80211_CMD_DEAUTHENTICATE,
1991 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
1992 }
1993 }
1994
1995
1996 static void wpa_driver_nl80211_check_bss_status(
1997 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1998 {
1999 size_t i;
2000
2001 for (i = 0; i < res->num; i++) {
2002 struct wpa_scan_res *r = res->res[i];
2003 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2004 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2005 "indicates BSS status with " MACSTR
2006 " as authenticated",
2007 MAC2STR(r->bssid));
2008 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2009 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2010 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2011 0) {
2012 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2013 " in local state (auth=" MACSTR
2014 " assoc=" MACSTR ")",
2015 MAC2STR(drv->auth_bssid),
2016 MAC2STR(drv->bssid));
2017 clear_state_mismatch(drv, r->bssid);
2018 }
2019 }
2020
2021 if (r->flags & WPA_SCAN_ASSOCIATED) {
2022 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2023 "indicate BSS status with " MACSTR
2024 " as associated",
2025 MAC2STR(r->bssid));
2026 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2027 !drv->associated) {
2028 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2029 "(not associated) does not match "
2030 "with BSS state");
2031 clear_state_mismatch(drv, r->bssid);
2032 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2033 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2034 0) {
2035 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2036 "(associated with " MACSTR ") does "
2037 "not match with BSS state",
2038 MAC2STR(drv->bssid));
2039 clear_state_mismatch(drv, r->bssid);
2040 clear_state_mismatch(drv, drv->bssid);
2041 }
2042 }
2043 }
2044 }
2045
2046
2047 static void wpa_scan_results_free(struct wpa_scan_results *res)
2048 {
2049 size_t i;
2050
2051 if (res == NULL)
2052 return;
2053
2054 for (i = 0; i < res->num; i++)
2055 os_free(res->res[i]);
2056 os_free(res->res);
2057 os_free(res);
2058 }
2059
2060
2061 static struct wpa_scan_results *
2062 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
2063 {
2064 struct nl_msg *msg;
2065 struct wpa_scan_results *res;
2066 int ret;
2067 struct nl80211_bss_info_arg arg;
2068
2069 res = os_zalloc(sizeof(*res));
2070 if (res == NULL)
2071 return NULL;
2072 msg = nlmsg_alloc();
2073 if (!msg)
2074 goto nla_put_failure;
2075
2076 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2077 NL80211_CMD_GET_SCAN, 0);
2078 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2079
2080 arg.drv = drv;
2081 arg.res = res;
2082 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
2083 msg = NULL;
2084 if (ret == 0) {
2085 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2086 (unsigned long) res->num);
2087 return res;
2088 }
2089 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2090 "(%s)", ret, strerror(-ret));
2091 nla_put_failure:
2092 nlmsg_free(msg);
2093 wpa_scan_results_free(res);
2094 return NULL;
2095 }
2096
2097
2098 /**
2099 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2100 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2101 * Returns: Scan results on success, -1 on failure
2102 */
2103 static struct wpa_scan_results *
2104 wpa_driver_nl80211_get_scan_results(void *priv)
2105 {
2106 struct i802_bss *bss = priv;
2107 struct wpa_driver_nl80211_data *drv = bss->drv;
2108 struct wpa_scan_results *res;
2109
2110 res = nl80211_get_scan_results(drv);
2111 if (res)
2112 wpa_driver_nl80211_check_bss_status(drv, res);
2113 return res;
2114 }
2115
2116
2117 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2118 {
2119 struct wpa_scan_results *res;
2120 size_t i;
2121
2122 res = nl80211_get_scan_results(drv);
2123 if (res == NULL) {
2124 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2125 return;
2126 }
2127
2128 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2129 for (i = 0; i < res->num; i++) {
2130 struct wpa_scan_res *r = res->res[i];
2131 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2132 (int) i, (int) res->num, MAC2STR(r->bssid),
2133 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2134 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2135 }
2136
2137 wpa_scan_results_free(res);
2138 }
2139
2140
2141 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
2142 enum wpa_alg alg, const u8 *addr,
2143 int key_idx, int set_tx,
2144 const u8 *seq, size_t seq_len,
2145 const u8 *key, size_t key_len)
2146 {
2147 struct i802_bss *bss = priv;
2148 struct wpa_driver_nl80211_data *drv = bss->drv;
2149 int ifindex = if_nametoindex(ifname);
2150 struct nl_msg *msg;
2151 int ret;
2152
2153 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2154 "set_tx=%d seq_len=%lu key_len=%lu",
2155 __func__, ifindex, alg, addr, key_idx, set_tx,
2156 (unsigned long) seq_len, (unsigned long) key_len);
2157
2158 msg = nlmsg_alloc();
2159 if (!msg)
2160 return -ENOMEM;
2161
2162 if (alg == WPA_ALG_NONE) {
2163 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2164 0, NL80211_CMD_DEL_KEY, 0);
2165 } else {
2166 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2167 0, NL80211_CMD_NEW_KEY, 0);
2168 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
2169 switch (alg) {
2170 case WPA_ALG_WEP:
2171 if (key_len == 5)
2172 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2173 WLAN_CIPHER_SUITE_WEP40);
2174 else
2175 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2176 WLAN_CIPHER_SUITE_WEP104);
2177 break;
2178 case WPA_ALG_TKIP:
2179 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2180 WLAN_CIPHER_SUITE_TKIP);
2181 break;
2182 case WPA_ALG_CCMP:
2183 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2184 WLAN_CIPHER_SUITE_CCMP);
2185 break;
2186 case WPA_ALG_IGTK:
2187 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2188 WLAN_CIPHER_SUITE_AES_CMAC);
2189 break;
2190 default:
2191 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2192 "algorithm %d", __func__, alg);
2193 nlmsg_free(msg);
2194 return -1;
2195 }
2196 }
2197
2198 if (seq && seq_len)
2199 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2200
2201 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2202 {
2203 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2204 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2205 }
2206 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2207 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2208
2209 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2210 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
2211 ret = 0;
2212 if (ret)
2213 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2214 ret, strerror(-ret));
2215
2216 /*
2217 * If we failed or don't need to set the default TX key (below),
2218 * we're done here.
2219 */
2220 if (ret || !set_tx || alg == WPA_ALG_NONE)
2221 return ret;
2222 #ifdef HOSTAPD
2223 if (addr)
2224 return ret;
2225 #else /* HOSTAPD */
2226 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2227 return ret;
2228 #endif /* HOSTAPD */
2229
2230 msg = nlmsg_alloc();
2231 if (!msg)
2232 return -ENOMEM;
2233
2234 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2235 0, NL80211_CMD_SET_KEY, 0);
2236 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2237 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2238 if (alg == WPA_ALG_IGTK)
2239 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2240 else
2241 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
2242
2243 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2244 if (ret == -ENOENT)
2245 ret = 0;
2246 if (ret)
2247 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2248 "err=%d %s)", ret, strerror(-ret));
2249 return ret;
2250
2251 nla_put_failure:
2252 return -ENOBUFS;
2253 }
2254
2255
2256 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
2257 int key_idx, int defkey,
2258 const u8 *seq, size_t seq_len,
2259 const u8 *key, size_t key_len)
2260 {
2261 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2262 if (!key_attr)
2263 return -1;
2264
2265 if (defkey && alg == WPA_ALG_IGTK)
2266 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2267 else if (defkey)
2268 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2269
2270 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2271
2272 switch (alg) {
2273 case WPA_ALG_WEP:
2274 if (key_len == 5)
2275 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2276 WLAN_CIPHER_SUITE_WEP40);
2277 else
2278 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2279 WLAN_CIPHER_SUITE_WEP104);
2280 break;
2281 case WPA_ALG_TKIP:
2282 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
2283 break;
2284 case WPA_ALG_CCMP:
2285 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
2286 break;
2287 case WPA_ALG_IGTK:
2288 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2289 WLAN_CIPHER_SUITE_AES_CMAC);
2290 break;
2291 default:
2292 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2293 "algorithm %d", __func__, alg);
2294 return -1;
2295 }
2296
2297 if (seq && seq_len)
2298 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2299
2300 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2301
2302 nla_nest_end(msg, key_attr);
2303
2304 return 0;
2305 nla_put_failure:
2306 return -1;
2307 }
2308
2309
2310 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2311 struct nl_msg *msg)
2312 {
2313 int i, privacy = 0;
2314 struct nlattr *nl_keys, *nl_key;
2315
2316 for (i = 0; i < 4; i++) {
2317 if (!params->wep_key[i])
2318 continue;
2319 privacy = 1;
2320 break;
2321 }
2322 if (!privacy)
2323 return 0;
2324
2325 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2326
2327 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2328 if (!nl_keys)
2329 goto nla_put_failure;
2330
2331 for (i = 0; i < 4; i++) {
2332 if (!params->wep_key[i])
2333 continue;
2334
2335 nl_key = nla_nest_start(msg, i);
2336 if (!nl_key)
2337 goto nla_put_failure;
2338
2339 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2340 params->wep_key[i]);
2341 if (params->wep_key_len[i] == 5)
2342 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2343 WLAN_CIPHER_SUITE_WEP40);
2344 else
2345 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2346 WLAN_CIPHER_SUITE_WEP104);
2347
2348 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2349
2350 if (i == params->wep_tx_keyidx)
2351 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2352
2353 nla_nest_end(msg, nl_key);
2354 }
2355 nla_nest_end(msg, nl_keys);
2356
2357 return 0;
2358
2359 nla_put_failure:
2360 return -ENOBUFS;
2361 }
2362
2363
2364 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2365 const u8 *addr, int cmd, u16 reason_code,
2366 int local_state_change)
2367 {
2368 int ret = -1;
2369 struct nl_msg *msg;
2370
2371 msg = nlmsg_alloc();
2372 if (!msg)
2373 return -1;
2374
2375 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2376
2377 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2378 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2379 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2380 if (local_state_change)
2381 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2382
2383 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2384 msg = NULL;
2385 if (ret) {
2386 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2387 "(%s)", ret, strerror(-ret));
2388 goto nla_put_failure;
2389 }
2390 ret = 0;
2391
2392 nla_put_failure:
2393 nlmsg_free(msg);
2394 return ret;
2395 }
2396
2397
2398 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2399 const u8 *addr, int reason_code)
2400 {
2401 wpa_printf(MSG_DEBUG, "%s", __func__);
2402 drv->associated = 0;
2403 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2404 reason_code, 0);
2405 }
2406
2407
2408 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
2409 int reason_code)
2410 {
2411 struct i802_bss *bss = priv;
2412 struct wpa_driver_nl80211_data *drv = bss->drv;
2413 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2414 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2415 wpa_printf(MSG_DEBUG, "%s", __func__);
2416 drv->associated = 0;
2417 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2418 reason_code, 0);
2419 }
2420
2421
2422 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2423 int reason_code)
2424 {
2425 struct i802_bss *bss = priv;
2426 struct wpa_driver_nl80211_data *drv = bss->drv;
2427 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2428 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2429 wpa_printf(MSG_DEBUG, "%s", __func__);
2430 drv->associated = 0;
2431 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2432 reason_code, 0);
2433 }
2434
2435
2436 static int wpa_driver_nl80211_authenticate(
2437 void *priv, struct wpa_driver_auth_params *params)
2438 {
2439 struct i802_bss *bss = priv;
2440 struct wpa_driver_nl80211_data *drv = bss->drv;
2441 int ret = -1, i;
2442 struct nl_msg *msg;
2443 enum nl80211_auth_type type;
2444 int count = 0;
2445
2446 drv->associated = 0;
2447 os_memset(drv->auth_bssid, 0, ETH_ALEN);
2448 /* FIX: IBSS mode */
2449 if (drv->nlmode != NL80211_IFTYPE_STATION)
2450 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
2451
2452 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
2453 return -1;
2454
2455 retry:
2456 msg = nlmsg_alloc();
2457 if (!msg)
2458 return -1;
2459
2460 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2461 drv->ifindex);
2462
2463 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2464 NL80211_CMD_AUTHENTICATE, 0);
2465
2466 for (i = 0; i < 4; i++) {
2467 if (!params->wep_key[i])
2468 continue;
2469 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2470 NULL, i,
2471 i == params->wep_tx_keyidx, NULL, 0,
2472 params->wep_key[i],
2473 params->wep_key_len[i]);
2474 if (params->wep_tx_keyidx != i)
2475 continue;
2476 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2477 params->wep_key[i], params->wep_key_len[i])) {
2478 nlmsg_free(msg);
2479 return -1;
2480 }
2481 }
2482
2483 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2484 if (params->bssid) {
2485 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2486 MAC2STR(params->bssid));
2487 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2488 }
2489 if (params->freq) {
2490 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2491 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2492 }
2493 if (params->ssid) {
2494 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2495 params->ssid, params->ssid_len);
2496 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2497 params->ssid);
2498 }
2499 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2500 if (params->ie)
2501 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2502 /*
2503 * TODO: if multiple auth_alg options enabled, try them one by one if
2504 * the AP rejects authentication due to unknown auth alg
2505 */
2506 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
2507 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2508 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
2509 type = NL80211_AUTHTYPE_SHARED_KEY;
2510 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
2511 type = NL80211_AUTHTYPE_NETWORK_EAP;
2512 else if (params->auth_alg & WPA_AUTH_ALG_FT)
2513 type = NL80211_AUTHTYPE_FT;
2514 else
2515 goto nla_put_failure;
2516 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2517 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2518 if (params->local_state_change) {
2519 wpa_printf(MSG_DEBUG, " * Local state change only");
2520 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2521 }
2522
2523 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2524 msg = NULL;
2525 if (ret) {
2526 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2527 "(%s)", ret, strerror(-ret));
2528 count++;
2529 if (ret == -EALREADY && count == 1 && params->bssid &&
2530 !params->local_state_change) {
2531 /*
2532 * mac80211 does not currently accept new
2533 * authentication if we are already authenticated. As a
2534 * workaround, force deauthentication and try again.
2535 */
2536 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2537 "after forced deauthentication");
2538 wpa_driver_nl80211_deauthenticate(
2539 bss, params->bssid,
2540 WLAN_REASON_PREV_AUTH_NOT_VALID);
2541 nlmsg_free(msg);
2542 goto retry;
2543 }
2544 goto nla_put_failure;
2545 }
2546 ret = 0;
2547 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2548 "successfully");
2549
2550 nla_put_failure:
2551 nlmsg_free(msg);
2552 return ret;
2553 }
2554
2555
2556 struct phy_info_arg {
2557 u16 *num_modes;
2558 struct hostapd_hw_modes *modes;
2559 };
2560
2561 static int phy_info_handler(struct nl_msg *msg, void *arg)
2562 {
2563 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2564 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2565 struct phy_info_arg *phy_info = arg;
2566
2567 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2568
2569 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2570 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2571 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2572 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2573 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2574 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2575 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2576 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2577 };
2578
2579 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2580 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2581 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2582 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2583 };
2584
2585 struct nlattr *nl_band;
2586 struct nlattr *nl_freq;
2587 struct nlattr *nl_rate;
2588 int rem_band, rem_freq, rem_rate;
2589 struct hostapd_hw_modes *mode;
2590 int idx, mode_is_set;
2591
2592 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2593 genlmsg_attrlen(gnlh, 0), NULL);
2594
2595 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2596 return NL_SKIP;
2597
2598 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2599 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2600 if (!mode)
2601 return NL_SKIP;
2602 phy_info->modes = mode;
2603
2604 mode_is_set = 0;
2605
2606 mode = &phy_info->modes[*(phy_info->num_modes)];
2607 memset(mode, 0, sizeof(*mode));
2608 *(phy_info->num_modes) += 1;
2609
2610 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2611 nla_len(nl_band), NULL);
2612
2613 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2614 mode->ht_capab = nla_get_u16(
2615 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2616 }
2617
2618 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2619 mode->a_mpdu_params |= nla_get_u8(
2620 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2621 0x03;
2622 }
2623
2624 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2625 mode->a_mpdu_params |= nla_get_u8(
2626 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2627 2;
2628 }
2629
2630 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2631 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2632 u8 *mcs;
2633 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2634 os_memcpy(mode->mcs_set, mcs, 16);
2635 }
2636
2637 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2638 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2639 nla_len(nl_freq), freq_policy);
2640 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2641 continue;
2642 mode->num_channels++;
2643 }
2644
2645 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2646 if (!mode->channels)
2647 return NL_SKIP;
2648
2649 idx = 0;
2650
2651 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2652 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2653 nla_len(nl_freq), freq_policy);
2654 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2655 continue;
2656
2657 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2658 mode->channels[idx].flag = 0;
2659
2660 if (!mode_is_set) {
2661 /* crude heuristic */
2662 if (mode->channels[idx].freq < 4000)
2663 mode->mode = HOSTAPD_MODE_IEEE80211B;
2664 else
2665 mode->mode = HOSTAPD_MODE_IEEE80211A;
2666 mode_is_set = 1;
2667 }
2668
2669 /* crude heuristic */
2670 if (mode->channels[idx].freq < 4000)
2671 if (mode->channels[idx].freq == 2484)
2672 mode->channels[idx].chan = 14;
2673 else
2674 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2675 else
2676 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2677
2678 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2679 mode->channels[idx].flag |=
2680 HOSTAPD_CHAN_DISABLED;
2681 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2682 mode->channels[idx].flag |=
2683 HOSTAPD_CHAN_PASSIVE_SCAN;
2684 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2685 mode->channels[idx].flag |=
2686 HOSTAPD_CHAN_NO_IBSS;
2687 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2688 mode->channels[idx].flag |=
2689 HOSTAPD_CHAN_RADAR;
2690
2691 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2692 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2693 mode->channels[idx].max_tx_power =
2694 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2695
2696 idx++;
2697 }
2698
2699 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2700 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2701 nla_len(nl_rate), rate_policy);
2702 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2703 continue;
2704 mode->num_rates++;
2705 }
2706
2707 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2708 if (!mode->rates)
2709 return NL_SKIP;
2710
2711 idx = 0;
2712
2713 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2714 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2715 nla_len(nl_rate), rate_policy);
2716 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2717 continue;
2718 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2719
2720 /* crude heuristic */
2721 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2722 mode->rates[idx] > 200)
2723 mode->mode = HOSTAPD_MODE_IEEE80211G;
2724
2725 idx++;
2726 }
2727 }
2728
2729 return NL_SKIP;
2730 }
2731
2732 static struct hostapd_hw_modes *
2733 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2734 {
2735 u16 m;
2736 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2737 int i, mode11g_idx = -1;
2738
2739 /* If only 802.11g mode is included, use it to construct matching
2740 * 802.11b mode data. */
2741
2742 for (m = 0; m < *num_modes; m++) {
2743 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2744 return modes; /* 802.11b already included */
2745 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2746 mode11g_idx = m;
2747 }
2748
2749 if (mode11g_idx < 0)
2750 return modes; /* 2.4 GHz band not supported at all */
2751
2752 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2753 if (nmodes == NULL)
2754 return modes; /* Could not add 802.11b mode */
2755
2756 mode = &nmodes[*num_modes];
2757 os_memset(mode, 0, sizeof(*mode));
2758 (*num_modes)++;
2759 modes = nmodes;
2760
2761 mode->mode = HOSTAPD_MODE_IEEE80211B;
2762
2763 mode11g = &modes[mode11g_idx];
2764 mode->num_channels = mode11g->num_channels;
2765 mode->channels = os_malloc(mode11g->num_channels *
2766 sizeof(struct hostapd_channel_data));
2767 if (mode->channels == NULL) {
2768 (*num_modes)--;
2769 return modes; /* Could not add 802.11b mode */
2770 }
2771 os_memcpy(mode->channels, mode11g->channels,
2772 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2773
2774 mode->num_rates = 0;
2775 mode->rates = os_malloc(4 * sizeof(int));
2776 if (mode->rates == NULL) {
2777 os_free(mode->channels);
2778 (*num_modes)--;
2779 return modes; /* Could not add 802.11b mode */
2780 }
2781
2782 for (i = 0; i < mode11g->num_rates; i++) {
2783 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2784 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2785 continue;
2786 mode->rates[mode->num_rates] = mode11g->rates[i];
2787 mode->num_rates++;
2788 if (mode->num_rates == 4)
2789 break;
2790 }
2791
2792 if (mode->num_rates == 0) {
2793 os_free(mode->channels);
2794 os_free(mode->rates);
2795 (*num_modes)--;
2796 return modes; /* No 802.11b rates */
2797 }
2798
2799 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2800 "information");
2801
2802 return modes;
2803 }
2804
2805
2806 static struct hostapd_hw_modes *
2807 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2808 {
2809 struct i802_bss *bss = priv;
2810 struct wpa_driver_nl80211_data *drv = bss->drv;
2811 struct nl_msg *msg;
2812 struct phy_info_arg result = {
2813 .num_modes = num_modes,
2814 .modes = NULL,
2815 };
2816
2817 *num_modes = 0;
2818 *flags = 0;
2819
2820 msg = nlmsg_alloc();
2821 if (!msg)
2822 return NULL;
2823
2824 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2825 0, NL80211_CMD_GET_WIPHY, 0);
2826
2827 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2828
2829 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2830 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2831 nla_put_failure:
2832 return NULL;
2833 }
2834
2835
2836 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2837 const void *data, size_t len,
2838 int encrypt)
2839 {
2840 __u8 rtap_hdr[] = {
2841 0x00, 0x00, /* radiotap version */
2842 0x0e, 0x00, /* radiotap length */
2843 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2844 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2845 0x00, /* padding */
2846 0x00, 0x00, /* RX and TX flags to indicate that */
2847 0x00, 0x00, /* this is the injected frame directly */
2848 };
2849 struct iovec iov[2] = {
2850 {
2851 .iov_base = &rtap_hdr,
2852 .iov_len = sizeof(rtap_hdr),
2853 },
2854 {
2855 .iov_base = (void *) data,
2856 .iov_len = len,
2857 }
2858 };
2859 struct msghdr msg = {
2860 .msg_name = NULL,
2861 .msg_namelen = 0,
2862 .msg_iov = iov,
2863 .msg_iovlen = 2,
2864 .msg_control = NULL,
2865 .msg_controllen = 0,
2866 .msg_flags = 0,
2867 };
2868
2869 if (encrypt)
2870 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2871
2872 return sendmsg(drv->monitor_sock, &msg, 0);
2873 }
2874
2875
2876 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2877 size_t data_len)
2878 {
2879 struct i802_bss *bss = priv;
2880 struct wpa_driver_nl80211_data *drv = bss->drv;
2881 struct ieee80211_mgmt *mgmt;
2882 int encrypt = 1;
2883 u16 fc;
2884
2885 mgmt = (struct ieee80211_mgmt *) data;
2886 fc = le_to_host16(mgmt->frame_control);
2887
2888 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2889 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2890 /*
2891 * Only one of the authentication frame types is encrypted.
2892 * In order for static WEP encryption to work properly (i.e.,
2893 * to not encrypt the frame), we need to tell mac80211 about
2894 * the frames that must not be encrypted.
2895 */
2896 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2897 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2898 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2899 encrypt = 0;
2900 }
2901
2902 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2903 }
2904
2905
2906 static int wpa_driver_nl80211_set_beacon(void *priv,
2907 const u8 *head, size_t head_len,
2908 const u8 *tail, size_t tail_len,
2909 int dtim_period, int beacon_int)
2910 {
2911 struct i802_bss *bss = priv;
2912 struct wpa_driver_nl80211_data *drv = bss->drv;
2913 struct nl_msg *msg;
2914 u8 cmd = NL80211_CMD_NEW_BEACON;
2915 int ret;
2916 int beacon_set;
2917 int ifindex = if_nametoindex(bss->ifname);
2918
2919 beacon_set = bss->beacon_set;
2920
2921 msg = nlmsg_alloc();
2922 if (!msg)
2923 return -ENOMEM;
2924
2925 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2926 beacon_set);
2927 if (beacon_set)
2928 cmd = NL80211_CMD_SET_BEACON;
2929
2930 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2931 0, cmd, 0);
2932 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2933 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2934 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2935 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2936 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2937
2938 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2939 if (ret) {
2940 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2941 ret, strerror(-ret));
2942 } else {
2943 bss->beacon_set = 1;
2944 }
2945 return ret;
2946 nla_put_failure:
2947 return -ENOBUFS;
2948 }
2949
2950
2951 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2952 int freq, int ht_enabled,
2953 int sec_channel_offset)
2954 {
2955 struct nl_msg *msg;
2956 int ret;
2957
2958 msg = nlmsg_alloc();
2959 if (!msg)
2960 return -1;
2961
2962 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2963 NL80211_CMD_SET_WIPHY, 0);
2964
2965 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2966 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2967 if (ht_enabled) {
2968 switch (sec_channel_offset) {
2969 case -1:
2970 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2971 NL80211_CHAN_HT40MINUS);
2972 break;
2973 case 1:
2974 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2975 NL80211_CHAN_HT40PLUS);
2976 break;
2977 default:
2978 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2979 NL80211_CHAN_HT20);
2980 break;
2981 }
2982 }
2983
2984 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2985 if (ret == 0)
2986 return 0;
2987 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2988 "%d (%s)", freq, ret, strerror(-ret));
2989 nla_put_failure:
2990 return -1;
2991 }
2992
2993
2994 static int wpa_driver_nl80211_sta_add(void *priv,
2995 struct hostapd_sta_add_params *params)
2996 {
2997 struct i802_bss *bss = priv;
2998 struct wpa_driver_nl80211_data *drv = bss->drv;
2999 struct nl_msg *msg;
3000 int ret = -ENOBUFS;
3001
3002 msg = nlmsg_alloc();
3003 if (!msg)
3004 return -ENOMEM;
3005
3006 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3007 0, NL80211_CMD_NEW_STATION, 0);
3008
3009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
3010 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3011 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3012 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3013 params->supp_rates);
3014 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3015 params->listen_interval);
3016 if (params->ht_capabilities) {
3017 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
3018 sizeof(*params->ht_capabilities),
3019 params->ht_capabilities);
3020 }
3021
3022 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3023 if (ret)
3024 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3025 "result: %d (%s)", ret, strerror(-ret));
3026 if (ret == -EEXIST)
3027 ret = 0;
3028 nla_put_failure:
3029 return ret;
3030 }
3031
3032
3033 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3034 {
3035 struct i802_bss *bss = priv;
3036 struct wpa_driver_nl80211_data *drv = bss->drv;
3037 struct nl_msg *msg;
3038 int ret;
3039
3040 msg = nlmsg_alloc();
3041 if (!msg)
3042 return -ENOMEM;
3043
3044 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3045 0, NL80211_CMD_DEL_STATION, 0);
3046
3047 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3048 if_nametoindex(bss->ifname));
3049 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3050
3051 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3052 if (ret == -ENOENT)
3053 return 0;
3054 return ret;
3055 nla_put_failure:
3056 return -ENOBUFS;
3057 }
3058
3059
3060 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3061 int ifidx)
3062 {
3063 struct nl_msg *msg;
3064
3065 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3066
3067 #ifdef HOSTAPD
3068 /* stop listening for EAPOL on this interface */
3069 del_ifidx(drv, ifidx);
3070 #endif /* HOSTAPD */
3071
3072 msg = nlmsg_alloc();
3073 if (!msg)
3074 goto nla_put_failure;
3075
3076 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3077 0, NL80211_CMD_DEL_INTERFACE, 0);
3078 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3079
3080 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3081 return;
3082 nla_put_failure:
3083 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
3084 }
3085
3086
3087 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3088 const char *ifname,
3089 enum nl80211_iftype iftype,
3090 const u8 *addr, int wds)
3091 {
3092 struct nl_msg *msg, *flags = NULL;
3093 int ifidx;
3094 int ret = -ENOBUFS;
3095
3096 msg = nlmsg_alloc();
3097 if (!msg)
3098 return -1;
3099
3100 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3101 0, NL80211_CMD_NEW_INTERFACE, 0);
3102 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3103 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3104 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3105
3106 if (iftype == NL80211_IFTYPE_MONITOR) {
3107 int err;
3108
3109 flags = nlmsg_alloc();
3110 if (!flags)
3111 goto nla_put_failure;
3112
3113 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3114
3115 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3116
3117 nlmsg_free(flags);
3118
3119 if (err)
3120 goto nla_put_failure;
3121 } else if (wds) {
3122 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
3123 }
3124
3125 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3126 if (ret) {
3127 nla_put_failure:
3128 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3129 ifname, ret, strerror(-ret));
3130 return ret;
3131 }
3132
3133 ifidx = if_nametoindex(ifname);
3134 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3135 ifname, ifidx);
3136
3137 if (ifidx <= 0)
3138 return -1;
3139
3140 #ifdef HOSTAPD
3141 /* start listening for EAPOL on this interface */
3142 add_ifidx(drv, ifidx);
3143 #endif /* HOSTAPD */
3144
3145 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
3146 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
3147 nl80211_remove_iface(drv, ifidx);
3148 return -1;
3149 }
3150
3151 return ifidx;
3152 }
3153
3154
3155 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3156 const char *ifname, enum nl80211_iftype iftype,
3157 const u8 *addr, int wds)
3158 {
3159 int ret;
3160
3161 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
3162
3163 /* if error occured and interface exists already */
3164 if (ret == -ENFILE && if_nametoindex(ifname)) {
3165 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3166
3167 /* Try to remove the interface that was already there. */
3168 nl80211_remove_iface(drv, if_nametoindex(ifname));
3169
3170 /* Try to create the interface again */
3171 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3172 wds);
3173 }
3174
3175 if (ret >= 0 && drv->disable_11b_rates)
3176 nl80211_disable_11b_rates(drv, ret, 1);
3177
3178 return ret;
3179 }
3180
3181
3182 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3183 {
3184 struct ieee80211_hdr *hdr;
3185 u16 fc;
3186 union wpa_event_data event;
3187
3188 hdr = (struct ieee80211_hdr *) buf;
3189 fc = le_to_host16(hdr->frame_control);
3190
3191 os_memset(&event, 0, sizeof(event));
3192 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3193 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3194 event.tx_status.dst = hdr->addr1;
3195 event.tx_status.data = buf;
3196 event.tx_status.data_len = len;
3197 event.tx_status.ack = ok;
3198 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
3199 }
3200
3201
3202 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
3203 u8 *buf, size_t len)
3204 {
3205 union wpa_event_data event;
3206 os_memset(&event, 0, sizeof(event));
3207 event.rx_from_unknown.frame = buf;
3208 event.rx_from_unknown.len = len;
3209 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
3210 }
3211
3212
3213 static void handle_frame(struct wpa_driver_nl80211_data *drv,
3214 u8 *buf, size_t len, int datarate, int ssi_signal)
3215 {
3216 struct ieee80211_hdr *hdr;
3217 u16 fc;
3218 union wpa_event_data event;
3219
3220 hdr = (struct ieee80211_hdr *) buf;
3221 fc = le_to_host16(hdr->frame_control);
3222
3223 switch (WLAN_FC_GET_TYPE(fc)) {
3224 case WLAN_FC_TYPE_MGMT:
3225 os_memset(&event, 0, sizeof(event));
3226 event.rx_mgmt.frame = buf;
3227 event.rx_mgmt.frame_len = len;
3228 event.rx_mgmt.datarate = datarate;
3229 event.rx_mgmt.ssi_signal = ssi_signal;
3230 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
3231 break;
3232 case WLAN_FC_TYPE_CTRL:
3233 /* can only get here with PS-Poll frames */
3234 wpa_printf(MSG_DEBUG, "CTRL");
3235 from_unknown_sta(drv, buf, len);
3236 break;
3237 case WLAN_FC_TYPE_DATA:
3238 from_unknown_sta(drv, buf, len);
3239 break;
3240 }
3241 }
3242
3243
3244 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3245 {
3246 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3247 int len;
3248 unsigned char buf[3000];
3249 struct ieee80211_radiotap_iterator iter;
3250 int ret;
3251 int datarate = 0, ssi_signal = 0;
3252 int injected = 0, failed = 0, rxflags = 0;
3253
3254 len = recv(sock, buf, sizeof(buf), 0);
3255 if (len < 0) {
3256 perror("recv");
3257 return;
3258 }
3259
3260 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3261 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3262 "frame since Probe Request reporting is disabled");
3263 return;
3264 }
3265
3266 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3267 printf("received invalid radiotap frame\n");
3268 return;
3269 }
3270
3271 while (1) {
3272 ret = ieee80211_radiotap_iterator_next(&iter);
3273 if (ret == -ENOENT)
3274 break;
3275 if (ret) {
3276 printf("received invalid radiotap frame (%d)\n", ret);
3277 return;
3278 }
3279 switch (iter.this_arg_index) {
3280 case IEEE80211_RADIOTAP_FLAGS:
3281 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3282 len -= 4;
3283 break;
3284 case IEEE80211_RADIOTAP_RX_FLAGS:
3285 rxflags = 1;
3286 break;
3287 case IEEE80211_RADIOTAP_TX_FLAGS:
3288 injected = 1;
3289 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3290 IEEE80211_RADIOTAP_F_TX_FAIL;
3291 break;
3292 case IEEE80211_RADIOTAP_DATA_RETRIES:
3293 break;
3294 case IEEE80211_RADIOTAP_CHANNEL:
3295 /* TODO: convert from freq/flags to channel number */
3296 break;
3297 case IEEE80211_RADIOTAP_RATE:
3298 datarate = *iter.this_arg * 5;
3299 break;
3300 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
3301 ssi_signal = *iter.this_arg;
3302 break;
3303 }
3304 }
3305
3306 if (rxflags && injected)
3307 return;
3308
3309 if (!injected)
3310 handle_frame(drv, buf + iter.max_length,
3311 len - iter.max_length, datarate, ssi_signal);
3312 else
3313 handle_tx_callback(drv->ctx, buf + iter.max_length,
3314 len - iter.max_length, !failed);
3315 }
3316
3317
3318 /*
3319 * we post-process the filter code later and rewrite
3320 * this to the offset to the last instruction
3321 */
3322 #define PASS 0xFF
3323 #define FAIL 0xFE
3324
3325 static struct sock_filter msock_filter_insns[] = {
3326 /*
3327 * do a little-endian load of the radiotap length field
3328 */
3329 /* load lower byte into A */
3330 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3331 /* put it into X (== index register) */
3332 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3333 /* load upper byte into A */
3334 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3335 /* left-shift it by 8 */
3336 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3337 /* or with X */
3338 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3339 /* put result into X */
3340 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3341
3342 /*
3343 * Allow management frames through, this also gives us those
3344 * management frames that we sent ourselves with status
3345 */
3346 /* load the lower byte of the IEEE 802.11 frame control field */
3347 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3348 /* mask off frame type and version */
3349 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3350 /* accept frame if it's both 0, fall through otherwise */
3351 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3352
3353 /*
3354 * TODO: add a bit to radiotap RX flags that indicates
3355 * that the sending station is not associated, then
3356 * add a filter here that filters on our DA and that flag
3357 * to allow us to deauth frames to that bad station.
3358 *
3359 * Not a regression -- we didn't do it before either.
3360 */
3361
3362 #if 0
3363 /*
3364 * drop non-data frames
3365 */
3366 /* load the lower byte of the frame control field */
3367 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3368 /* mask off QoS bit */
3369 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3370 /* drop non-data frames */
3371 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
3372 #endif
3373 /* load the upper byte of the frame control field */
3374 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
3375 /* mask off toDS/fromDS */
3376 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
3377 /* accept WDS frames */
3378 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
3379
3380 /*
3381 * add header length to index
3382 */
3383 /* load the lower byte of the frame control field */
3384 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3385 /* mask off QoS bit */
3386 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3387 /* right shift it by 6 to give 0 or 2 */
3388 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3389 /* add data frame header length */
3390 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3391 /* add index, was start of 802.11 header */
3392 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3393 /* move to index, now start of LL header */
3394 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3395
3396 /*
3397 * Accept empty data frames, we use those for
3398 * polling activity.
3399 */
3400 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3401 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3402
3403 /*
3404 * Accept EAPOL frames
3405 */
3406 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3407 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3408 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3409 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3410
3411 /* keep these last two statements or change the code below */
3412 /* return 0 == "DROP" */
3413 BPF_STMT(BPF_RET | BPF_K, 0),
3414 /* return ~0 == "keep all" */
3415 BPF_STMT(BPF_RET | BPF_K, ~0),
3416 };
3417
3418 static struct sock_fprog msock_filter = {
3419 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3420 .filter = msock_filter_insns,
3421 };
3422
3423
3424 static int add_monitor_filter(int s)
3425 {
3426 int idx;
3427
3428 /* rewrite all PASS/FAIL jump offsets */
3429 for (idx = 0; idx < msock_filter.len; idx++) {
3430 struct sock_filter *insn = &msock_filter_insns[idx];
3431
3432 if (BPF_CLASS(insn->code) == BPF_JMP) {
3433 if (insn->code == (BPF_JMP|BPF_JA)) {
3434 if (insn->k == PASS)
3435 insn->k = msock_filter.len - idx - 2;
3436 else if (insn->k == FAIL)
3437 insn->k = msock_filter.len - idx - 3;
3438 }
3439
3440 if (insn->jt == PASS)
3441 insn->jt = msock_filter.len - idx - 2;
3442 else if (insn->jt == FAIL)
3443 insn->jt = msock_filter.len - idx - 3;
3444
3445 if (insn->jf == PASS)
3446 insn->jf = msock_filter.len - idx - 2;
3447 else if (insn->jf == FAIL)
3448 insn->jf = msock_filter.len - idx - 3;
3449 }
3450 }
3451
3452 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3453 &msock_filter, sizeof(msock_filter))) {
3454 perror("SO_ATTACH_FILTER");
3455 return -1;
3456 }
3457
3458 return 0;
3459 }
3460
3461
3462 static void nl80211_remove_monitor_interface(
3463 struct wpa_driver_nl80211_data *drv)
3464 {
3465 if (drv->monitor_ifidx >= 0) {
3466 nl80211_remove_iface(drv, drv->monitor_ifidx);
3467 drv->monitor_ifidx = -1;
3468 }
3469 if (drv->monitor_sock >= 0) {
3470 eloop_unregister_read_sock(drv->monitor_sock);
3471 close(drv->monitor_sock);
3472 drv->monitor_sock = -1;
3473 }
3474 }
3475
3476
3477 static int
3478 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3479 {
3480 char buf[IFNAMSIZ];
3481 struct sockaddr_ll ll;
3482 int optval;
3483 socklen_t optlen;
3484
3485 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
3486 buf[IFNAMSIZ - 1] = '\0';
3487
3488 drv->monitor_ifidx =
3489 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3490 0);
3491
3492 if (drv->monitor_ifidx < 0)
3493 return -1;
3494
3495 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
3496 goto error;
3497
3498 memset(&ll, 0, sizeof(ll));
3499 ll.sll_family = AF_PACKET;
3500 ll.sll_ifindex = drv->monitor_ifidx;
3501 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3502 if (drv->monitor_sock < 0) {
3503 perror("socket[PF_PACKET,SOCK_RAW]");
3504 goto error;
3505 }
3506
3507 if (add_monitor_filter(drv->monitor_sock)) {
3508 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3509 "interface; do filtering in user space");
3510 /* This works, but will cost in performance. */
3511 }
3512
3513 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3514 perror("monitor socket bind");
3515 goto error;
3516 }
3517
3518 optlen = sizeof(optval);
3519 optval = 20;
3520 if (setsockopt
3521 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3522 perror("Failed to set socket priority");
3523 goto error;
3524 }
3525
3526 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3527 drv, NULL)) {
3528 printf("Could not register monitor read socket\n");
3529 goto error;
3530 }
3531
3532 return 0;
3533 error:
3534 nl80211_remove_monitor_interface(drv);
3535 return -1;
3536 }
3537
3538
3539 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3540
3541 static int wpa_driver_nl80211_hapd_send_eapol(
3542 void *priv, const u8 *addr, const u8 *data,
3543 size_t data_len, int encrypt, const u8 *own_addr)
3544 {
3545 struct i802_bss *bss = priv;
3546 struct wpa_driver_nl80211_data *drv = bss->drv;
3547 struct ieee80211_hdr *hdr;
3548 size_t len;
3549 u8 *pos;
3550 int res;
3551 #if 0 /* FIX */
3552 int qos = sta->flags & WPA_STA_WMM;
3553 #else
3554 int qos = 0;
3555 #endif
3556
3557 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3558 data_len;
3559 hdr = os_zalloc(len);
3560 if (hdr == NULL) {
3561 printf("malloc() failed for i802_send_data(len=%lu)\n",
3562 (unsigned long) len);
3563 return -1;
3564 }
3565
3566 hdr->frame_control =
3567 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3568 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3569 if (encrypt)
3570 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3571 #if 0 /* To be enabled if qos determination is added above */
3572 if (qos) {
3573 hdr->frame_control |=
3574 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3575 }
3576 #endif
3577
3578 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3579 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3580 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3581 pos = (u8 *) (hdr + 1);
3582
3583 #if 0 /* To be enabled if qos determination is added above */
3584 if (qos) {
3585 /* add an empty QoS header if needed */
3586 pos[0] = 0;
3587 pos[1] = 0;
3588 pos += 2;
3589 }
3590 #endif
3591
3592 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3593 pos += sizeof(rfc1042_header);
3594 WPA_PUT_BE16(pos, ETH_P_PAE);
3595 pos += 2;
3596 memcpy(pos, data, data_len);
3597
3598 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3599 if (res < 0) {
3600 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3601 "failed: %d (%s)",
3602 (unsigned long) len, errno, strerror(errno));
3603 }
3604 os_free(hdr);
3605
3606 return res;
3607 }
3608
3609
3610 static u32 sta_flags_nl80211(int flags)
3611 {
3612 u32 f = 0;
3613
3614 if (flags & WPA_STA_AUTHORIZED)
3615 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3616 if (flags & WPA_STA_WMM)
3617 f |= BIT(NL80211_STA_FLAG_WME);
3618 if (flags & WPA_STA_SHORT_PREAMBLE)
3619 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3620 if (flags & WPA_STA_MFP)
3621 f |= BIT(NL80211_STA_FLAG_MFP);
3622
3623 return f;
3624 }
3625
3626
3627 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3628 int total_flags,
3629 int flags_or, int flags_and)
3630 {
3631 struct i802_bss *bss = priv;
3632 struct wpa_driver_nl80211_data *drv = bss->drv;
3633 struct nl_msg *msg, *flags = NULL;
3634 struct nl80211_sta_flag_update upd;
3635
3636 msg = nlmsg_alloc();
3637 if (!msg)
3638 return -ENOMEM;
3639
3640 flags = nlmsg_alloc();
3641 if (!flags) {
3642 nlmsg_free(msg);
3643 return -ENOMEM;
3644 }
3645
3646 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3647 0, NL80211_CMD_SET_STATION, 0);
3648
3649 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3650 if_nametoindex(bss->ifname));
3651 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3652
3653 /*
3654 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3655 * can be removed eventually.
3656 */
3657 if (total_flags & WPA_STA_AUTHORIZED)
3658 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3659
3660 if (total_flags & WPA_STA_WMM)
3661 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3662
3663 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3664 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3665
3666 if (total_flags & WPA_STA_MFP)
3667 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3668
3669 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3670 goto nla_put_failure;
3671
3672 os_memset(&upd, 0, sizeof(upd));
3673 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3674 upd.set = sta_flags_nl80211(flags_or);
3675 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3676
3677 nlmsg_free(flags);
3678
3679 return send_and_recv_msgs(drv, msg, NULL, NULL);
3680 nla_put_failure:
3681 nlmsg_free(flags);
3682 return -ENOBUFS;
3683 }
3684
3685
3686 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3687 struct wpa_driver_associate_params *params)
3688 {
3689 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
3690 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3691 nl80211_remove_monitor_interface(drv);
3692 return -1;
3693 }
3694
3695 /* TODO: setup monitor interface (and add code somewhere to remove this
3696 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3697
3698 return 0;
3699 }
3700
3701
3702 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3703 {
3704 struct nl_msg *msg;
3705 int ret = -1;
3706
3707 msg = nlmsg_alloc();
3708 if (!msg)
3709 return -1;
3710
3711 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3712 NL80211_CMD_LEAVE_IBSS, 0);
3713 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3714 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3715 msg = NULL;
3716 if (ret) {
3717 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3718 "(%s)", ret, strerror(-ret));
3719 goto nla_put_failure;
3720 }
3721
3722 ret = 0;
3723 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3724
3725 nla_put_failure:
3726 nlmsg_free(msg);
3727 return ret;
3728 }
3729
3730
3731 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3732 struct wpa_driver_associate_params *params)
3733 {
3734 struct nl_msg *msg;
3735 int ret = -1;
3736 int count = 0;
3737
3738 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3739
3740 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
3741 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3742 "IBSS mode");
3743 return -1;
3744 }
3745
3746 retry:
3747 msg = nlmsg_alloc();
3748 if (!msg)
3749 return -1;
3750
3751 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3752 NL80211_CMD_JOIN_IBSS, 0);
3753 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3754
3755 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3756 goto nla_put_failure;
3757
3758 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3759 params->ssid, params->ssid_len);
3760 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3761 params->ssid);
3762 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3763 drv->ssid_len = params->ssid_len;
3764
3765 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3766 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3767
3768 ret = nl80211_set_conn_keys(params, msg);
3769 if (ret)
3770 goto nla_put_failure;
3771
3772 if (params->wpa_ie) {
3773 wpa_hexdump(MSG_DEBUG,
3774 " * Extra IEs for Beacon/Probe Response frames",
3775 params->wpa_ie, params->wpa_ie_len);
3776 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3777 params->wpa_ie);
3778 }
3779
3780 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3781 msg = NULL;
3782 if (ret) {
3783 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3784 ret, strerror(-ret));
3785 count++;
3786 if (ret == -EALREADY && count == 1) {
3787 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3788 "forced leave");
3789 nl80211_leave_ibss(drv);
3790 nlmsg_free(msg);
3791 goto retry;
3792 }
3793
3794 goto nla_put_failure;
3795 }
3796 ret = 0;
3797 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3798
3799 nla_put_failure:
3800 nlmsg_free(msg);
3801 return ret;
3802 }
3803
3804
3805 static int wpa_driver_nl80211_connect(
3806 struct wpa_driver_nl80211_data *drv,
3807 struct wpa_driver_associate_params *params)
3808 {
3809 struct nl_msg *msg;
3810 enum nl80211_auth_type type;
3811 int ret = 0;
3812
3813 msg = nlmsg_alloc();
3814 if (!msg)
3815 return -1;
3816
3817 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3818 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3819 NL80211_CMD_CONNECT, 0);
3820
3821 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3822 if (params->bssid) {
3823 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3824 MAC2STR(params->bssid));
3825 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3826 }
3827 if (params->freq) {
3828 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3829 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3830 }
3831 if (params->ssid) {
3832 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3833 params->ssid, params->ssid_len);
3834 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3835 params->ssid);
3836 if (params->ssid_len > sizeof(drv->ssid))
3837 goto nla_put_failure;
3838 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3839 drv->ssid_len = params->ssid_len;
3840 }
3841 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3842 if (params->wpa_ie)
3843 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3844 params->wpa_ie);
3845
3846 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
3847 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3848 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
3849 type = NL80211_AUTHTYPE_SHARED_KEY;
3850 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
3851 type = NL80211_AUTHTYPE_NETWORK_EAP;
3852 else if (params->auth_alg & WPA_AUTH_ALG_FT)
3853 type = NL80211_AUTHTYPE_FT;
3854 else
3855 goto nla_put_failure;
3856
3857 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3858 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3859
3860 if (params->wpa_ie && params->wpa_ie_len) {
3861 enum nl80211_wpa_versions ver;
3862
3863 if (params->wpa_ie[0] == WLAN_EID_RSN)
3864 ver = NL80211_WPA_VERSION_2;
3865 else
3866 ver = NL80211_WPA_VERSION_1;
3867
3868 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3869 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3870 }
3871
3872 if (params->pairwise_suite != CIPHER_NONE) {
3873 int cipher;
3874
3875 switch (params->pairwise_suite) {
3876 case CIPHER_WEP40:
3877 cipher = WLAN_CIPHER_SUITE_WEP40;
3878 break;
3879 case CIPHER_WEP104:
3880 cipher = WLAN_CIPHER_SUITE_WEP104;
3881 break;
3882 case CIPHER_CCMP:
3883 cipher = WLAN_CIPHER_SUITE_CCMP;
3884 break;
3885 case CIPHER_TKIP:
3886 default:
3887 cipher = WLAN_CIPHER_SUITE_TKIP;
3888 break;
3889 }
3890 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3891 }
3892
3893 if (params->group_suite != CIPHER_NONE) {
3894 int cipher;
3895
3896 switch (params->group_suite) {
3897 case CIPHER_WEP40:
3898 cipher = WLAN_CIPHER_SUITE_WEP40;
3899 break;
3900 case CIPHER_WEP104:
3901 cipher = WLAN_CIPHER_SUITE_WEP104;
3902 break;
3903 case CIPHER_CCMP:
3904 cipher = WLAN_CIPHER_SUITE_CCMP;
3905 break;
3906 case CIPHER_TKIP:
3907 default:
3908 cipher = WLAN_CIPHER_SUITE_TKIP;
3909 break;
3910 }
3911 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3912 }
3913
3914 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3915 params->key_mgmt_suite == KEY_MGMT_PSK) {
3916 int mgmt = WLAN_AKM_SUITE_PSK;
3917
3918 switch (params->key_mgmt_suite) {
3919 case KEY_MGMT_802_1X:
3920 mgmt = WLAN_AKM_SUITE_8021X;
3921 break;
3922 case KEY_MGMT_PSK:
3923 default:
3924 mgmt = WLAN_AKM_SUITE_PSK;
3925 break;
3926 }
3927 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3928 }
3929
3930 ret = nl80211_set_conn_keys(params, msg);
3931 if (ret)
3932 goto nla_put_failure;
3933
3934 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3935 msg = NULL;
3936 if (ret) {
3937 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3938 "(%s)", ret, strerror(-ret));
3939 goto nla_put_failure;
3940 }
3941 ret = 0;
3942 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3943
3944 nla_put_failure:
3945 nlmsg_free(msg);
3946 return ret;
3947
3948 }
3949
3950
3951 static int wpa_driver_nl80211_associate(
3952 void *priv, struct wpa_driver_associate_params *params)
3953 {
3954 struct i802_bss *bss = priv;
3955 struct wpa_driver_nl80211_data *drv = bss->drv;
3956 int ret = -1;
3957 struct nl_msg *msg;
3958
3959 if (params->mode == IEEE80211_MODE_AP)
3960 return wpa_driver_nl80211_ap(drv, params);
3961
3962 if (params->mode == IEEE80211_MODE_IBSS)
3963 return wpa_driver_nl80211_ibss(drv, params);
3964
3965 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3966 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
3967 return -1;
3968 return wpa_driver_nl80211_connect(drv, params);
3969 }
3970
3971 drv->associated = 0;
3972
3973 msg = nlmsg_alloc();
3974 if (!msg)
3975 return -1;
3976
3977 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3978 drv->ifindex);
3979 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3980 NL80211_CMD_ASSOCIATE, 0);
3981
3982 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3983 if (params->bssid) {
3984 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3985 MAC2STR(params->bssid));
3986 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3987 }
3988 if (params->freq) {
3989 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3990 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3991 drv->assoc_freq = params->freq;
3992 } else
3993 drv->assoc_freq = 0;
3994 if (params->ssid) {
3995 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3996 params->ssid, params->ssid_len);
3997 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3998 params->ssid);
3999 if (params->ssid_len > sizeof(drv->ssid))
4000 goto nla_put_failure;
4001 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4002 drv->ssid_len = params->ssid_len;
4003 }
4004 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4005 if (params->wpa_ie)
4006 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4007 params->wpa_ie);
4008
4009 #ifdef CONFIG_IEEE80211W
4010 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4011 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4012 #endif /* CONFIG_IEEE80211W */
4013
4014 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4015
4016 if (params->prev_bssid) {
4017 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4018 MAC2STR(params->prev_bssid));
4019 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4020 params->prev_bssid);
4021 }
4022
4023 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4024 msg = NULL;
4025 if (ret) {
4026 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4027 "(%s)", ret, strerror(-ret));
4028 nl80211_dump_scan(drv);
4029 goto nla_put_failure;
4030 }
4031 ret = 0;
4032 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4033 "successfully");
4034
4035 nla_put_failure:
4036 nlmsg_free(msg);
4037 return ret;
4038 }
4039
4040
4041 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4042 int ifindex, int mode)
4043 {
4044 struct nl_msg *msg;
4045 int ret = -ENOBUFS;
4046
4047 msg = nlmsg_alloc();
4048 if (!msg)
4049 return -ENOMEM;
4050
4051 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4052 0, NL80211_CMD_SET_INTERFACE, 0);
4053 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4054 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4055
4056 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4057 if (!ret)
4058 return 0;
4059 nla_put_failure:
4060 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4061 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4062 return ret;
4063 }
4064
4065
4066 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4067 {
4068 struct i802_bss *bss = priv;
4069 struct wpa_driver_nl80211_data *drv = bss->drv;
4070 int ret = -1;
4071 int nlmode;
4072
4073 switch (mode) {
4074 case 0:
4075 nlmode = NL80211_IFTYPE_STATION;
4076 break;
4077 case 1:
4078 nlmode = NL80211_IFTYPE_ADHOC;
4079 break;
4080 case 2:
4081 nlmode = NL80211_IFTYPE_AP;
4082 break;
4083 default:
4084 return -1;
4085 }
4086
4087 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4088 drv->nlmode = nlmode;
4089 ret = 0;
4090 goto done;
4091 }
4092
4093 if (nlmode == drv->nlmode) {
4094 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4095 "requested mode - ignore error");
4096 ret = 0;
4097 goto done; /* Already in the requested mode */
4098 }
4099
4100 /* mac80211 doesn't allow mode changes while the device is up, so
4101 * take the device down, try to set the mode again, and bring the
4102 * device back up.
4103 */
4104 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
4105 /* Try to set the mode again while the interface is down */
4106 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4107 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4108 ret = -1;
4109 }
4110
4111 if (!ret) {
4112 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4113 "interface is down");
4114 drv->nlmode = nlmode;
4115 }
4116
4117 done:
4118 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4119 /* Setup additional AP mode functionality if needed */
4120 if (drv->monitor_ifidx < 0 &&
4121 nl80211_create_monitor_interface(drv))
4122 return -1;
4123 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4124 /* Remove additional AP mode functionality */
4125 nl80211_remove_monitor_interface(drv);
4126 bss->beacon_set = 0;
4127 }
4128
4129 if (ret)
4130 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4131 "from %d failed", nlmode, drv->nlmode);
4132
4133 return ret;
4134 }
4135
4136
4137 static int wpa_driver_nl80211_get_capa(void *priv,
4138 struct wpa_driver_capa *capa)
4139 {
4140 struct i802_bss *bss = priv;
4141 struct wpa_driver_nl80211_data *drv = bss->drv;
4142 if (!drv->has_capability)
4143 return -1;
4144 os_memcpy(capa, &drv->capa, sizeof(*capa));
4145 return 0;
4146 }
4147
4148
4149 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4150 {
4151 struct i802_bss *bss = priv;
4152 struct wpa_driver_nl80211_data *drv = bss->drv;
4153
4154 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4155 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4156 drv->operstate = state;
4157 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
4158 state ? IF_OPER_UP : IF_OPER_DORMANT);
4159 }
4160
4161
4162 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4163 {
4164 struct i802_bss *bss = priv;
4165 struct wpa_driver_nl80211_data *drv = bss->drv;
4166 struct nl_msg *msg;
4167 struct nl80211_sta_flag_update upd;
4168
4169 msg = nlmsg_alloc();
4170 if (!msg)
4171 return -ENOMEM;
4172
4173 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4174 0, NL80211_CMD_SET_STATION, 0);
4175
4176 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4177 if_nametoindex(bss->ifname));
4178 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4179
4180 os_memset(&upd, 0, sizeof(upd));
4181 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4182 if (authorized)
4183 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4184 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4185
4186 return send_and_recv_msgs(drv, msg, NULL, NULL);
4187 nla_put_failure:
4188 return -ENOBUFS;
4189 }
4190
4191
4192 #ifdef HOSTAPD
4193
4194 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4195 {
4196 int i;
4197 int *old;
4198
4199 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4200 ifidx);
4201 for (i = 0; i < drv->num_if_indices; i++) {
4202 if (drv->if_indices[i] == 0) {
4203 drv->if_indices[i] = ifidx;
4204 return;
4205 }
4206 }
4207
4208 if (drv->if_indices != drv->default_if_indices)
4209 old = drv->if_indices;
4210 else
4211 old = NULL;
4212
4213 drv->if_indices = os_realloc(old,
4214 sizeof(int) * (drv->num_if_indices + 1));
4215 if (!drv->if_indices) {
4216 if (!old)
4217 drv->if_indices = drv->default_if_indices;
4218 else
4219 drv->if_indices = old;
4220 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4221 "interfaces");
4222 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4223 return;
4224 } else if (!old)
4225 os_memcpy(drv->if_indices, drv->default_if_indices,
4226 sizeof(drv->default_if_indices));
4227 drv->if_indices[drv->num_if_indices] = ifidx;
4228 drv->num_if_indices++;
4229 }
4230
4231
4232 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4233 {
4234 int i;
4235
4236 for (i = 0; i < drv->num_if_indices; i++) {
4237 if (drv->if_indices[i] == ifidx) {
4238 drv->if_indices[i] = 0;
4239 break;
4240 }
4241 }
4242 }
4243
4244
4245 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4246 {
4247 int i;
4248
4249 for (i = 0; i < drv->num_if_indices; i++)
4250 if (drv->if_indices[i] == ifidx)
4251 return 1;
4252
4253 return 0;
4254 }
4255
4256
4257 static inline int min_int(int a, int b)
4258 {
4259 if (a < b)
4260 return a;
4261 return b;
4262 }
4263
4264
4265 static int get_key_handler(struct nl_msg *msg, void *arg)
4266 {
4267 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4268 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4269
4270 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4271 genlmsg_attrlen(gnlh, 0), NULL);
4272
4273 /*
4274 * TODO: validate the key index and mac address!
4275 * Otherwise, there's a race condition as soon as
4276 * the kernel starts sending key notifications.
4277 */
4278
4279 if (tb[NL80211_ATTR_KEY_SEQ])
4280 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4281 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4282 return NL_SKIP;
4283 }
4284
4285
4286 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4287 int idx, u8 *seq)
4288 {
4289 struct i802_bss *bss = priv;
4290 struct wpa_driver_nl80211_data *drv = bss->drv;
4291 struct nl_msg *msg;
4292
4293 msg = nlmsg_alloc();
4294 if (!msg)
4295 return -ENOMEM;
4296
4297 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4298 0, NL80211_CMD_GET_KEY, 0);
4299
4300 if (addr)
4301 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4302 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4303 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4304
4305 memset(seq, 0, 6);
4306
4307 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4308 nla_put_failure:
4309 return -ENOBUFS;
4310 }
4311
4312
4313 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4314 int mode)
4315 {
4316 struct i802_bss *bss = priv;
4317 struct wpa_driver_nl80211_data *drv = bss->drv;
4318 struct nl_msg *msg;
4319 u8 rates[NL80211_MAX_SUPP_RATES];
4320 u8 rates_len = 0;
4321 int i;
4322
4323 msg = nlmsg_alloc();
4324 if (!msg)
4325 return -ENOMEM;
4326
4327 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4328 NL80211_CMD_SET_BSS, 0);
4329
4330 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4331 rates[rates_len++] = basic_rates[i] / 5;
4332
4333 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4334
4335 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4336
4337 return send_and_recv_msgs(drv, msg, NULL, NULL);
4338 nla_put_failure:
4339 return -ENOBUFS;
4340 }
4341
4342 #endif /* HOSTAPD */
4343
4344
4345 /* Set kernel driver on given frequency (MHz) */
4346 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4347 {
4348 struct i802_bss *bss = priv;
4349 struct wpa_driver_nl80211_data *drv = bss->drv;
4350 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4351 freq->sec_channel_offset);
4352 }
4353
4354
4355 #ifdef HOSTAPD
4356
4357 static int i802_set_rts(void *priv, int rts)
4358 {
4359 struct i802_bss *bss = priv;
4360 struct wpa_driver_nl80211_data *drv = bss->drv;
4361 struct nl_msg *msg;
4362 int ret = -ENOBUFS;
4363 u32 val;
4364
4365 msg = nlmsg_alloc();
4366 if (!msg)
4367 return -ENOMEM;
4368
4369 if (rts >= 2347)
4370 val = (u32) -1;
4371 else
4372 val = rts;
4373
4374 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4375 0, NL80211_CMD_SET_WIPHY, 0);
4376 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4377 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4378
4379 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4380 if (!ret)
4381 return 0;
4382 nla_put_failure:
4383 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4384 "%d (%s)", rts, ret, strerror(-ret));
4385 return ret;
4386 }
4387
4388
4389 static int i802_set_frag(void *priv, int frag)
4390 {
4391 struct i802_bss *bss = priv;
4392 struct wpa_driver_nl80211_data *drv = bss->drv;
4393 struct nl_msg *msg;
4394 int ret = -ENOBUFS;
4395 u32 val;
4396
4397 msg = nlmsg_alloc();
4398 if (!msg)
4399 return -ENOMEM;
4400
4401 if (frag >= 2346)
4402 val = (u32) -1;
4403 else
4404 val = frag;
4405
4406 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4407 0, NL80211_CMD_SET_WIPHY, 0);
4408 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4409 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4410
4411 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4412 if (!ret)
4413 return 0;
4414 nla_put_failure:
4415 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4416 "%d: %d (%s)", frag, ret, strerror(-ret));
4417 return ret;
4418 }
4419
4420
4421 static int i802_flush(void *priv)
4422 {
4423 struct i802_bss *bss = priv;
4424 struct wpa_driver_nl80211_data *drv = bss->drv;
4425 struct nl_msg *msg;
4426
4427 msg = nlmsg_alloc();
4428 if (!msg)
4429 return -1;
4430
4431 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4432 0, NL80211_CMD_DEL_STATION, 0);
4433
4434 /*
4435 * XXX: FIX! this needs to flush all VLANs too
4436 */
4437 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4438 if_nametoindex(bss->ifname));
4439
4440 return send_and_recv_msgs(drv, msg, NULL, NULL);
4441 nla_put_failure:
4442 return -ENOBUFS;
4443 }
4444
4445
4446 static int get_sta_handler(struct nl_msg *msg, void *arg)
4447 {
4448 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4449 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4450 struct hostap_sta_driver_data *data = arg;
4451 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4452 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4453 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4454 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4455 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4456 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4457 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4458 };
4459
4460 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4461 genlmsg_attrlen(gnlh, 0), NULL);
4462
4463 /*
4464 * TODO: validate the interface and mac address!
4465 * Otherwise, there's a race condition as soon as
4466 * the kernel starts sending station notifications.
4467 */
4468
4469 if (!tb[NL80211_ATTR_STA_INFO]) {
4470 wpa_printf(MSG_DEBUG, "sta stats missing!");
4471 return NL_SKIP;
4472 }
4473 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4474 tb[NL80211_ATTR_STA_INFO],
4475 stats_policy)) {
4476 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4477 return NL_SKIP;
4478 }
4479
4480 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4481 data->inactive_msec =
4482 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4483 if (stats[NL80211_STA_INFO_RX_BYTES])
4484 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4485 if (stats[NL80211_STA_INFO_TX_BYTES])
4486 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4487 if (stats[NL80211_STA_INFO_RX_PACKETS])
4488 data->rx_packets =
4489 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4490 if (stats[NL80211_STA_INFO_TX_PACKETS])
4491 data->tx_packets =
4492 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4493
4494 return NL_SKIP;
4495 }
4496
4497 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4498 const u8 *addr)
4499 {
4500 struct i802_bss *bss = priv;
4501 struct wpa_driver_nl80211_data *drv = bss->drv;
4502 struct nl_msg *msg;
4503
4504 os_memset(data, 0, sizeof(*data));
4505 msg = nlmsg_alloc();
4506 if (!msg)
4507 return -ENOMEM;
4508
4509 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4510 0, NL80211_CMD_GET_STATION, 0);
4511
4512 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4513 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4514
4515 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4516 nla_put_failure:
4517 return -ENOBUFS;
4518 }
4519
4520
4521 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4522 int cw_min, int cw_max, int burst_time)
4523 {
4524 struct i802_bss *bss = priv;
4525 struct wpa_driver_nl80211_data *drv = bss->drv;
4526 struct nl_msg *msg;
4527 struct nlattr *txq, *params;
4528
4529 msg = nlmsg_alloc();
4530 if (!msg)
4531 return -1;
4532
4533 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4534 0, NL80211_CMD_SET_WIPHY, 0);
4535
4536 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4537
4538 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4539 if (!txq)
4540 goto nla_put_failure;
4541
4542 /* We are only sending parameters for a single TXQ at a time */
4543 params = nla_nest_start(msg, 1);
4544 if (!params)
4545 goto nla_put_failure;
4546
4547 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4548 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4549 * 32 usec, so need to convert the value here. */
4550 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4551 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4552 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4553 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4554
4555 nla_nest_end(msg, params);
4556
4557 nla_nest_end(msg, txq);
4558
4559 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4560 return 0;
4561 nla_put_failure:
4562 return -1;
4563 }
4564
4565
4566 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4567 {
4568 struct i802_bss *bss = priv;
4569 struct wpa_driver_nl80211_data *drv = bss->drv;
4570 struct nl_msg *msg;
4571
4572 msg = nlmsg_alloc();
4573 if (!msg)
4574 return -ENOMEM;
4575
4576 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4577 NL80211_CMD_SET_BSS, 0);
4578
4579 if (cts >= 0)
4580 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4581 if (preamble >= 0)
4582 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4583 if (slot >= 0)
4584 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4585
4586 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
4587
4588 return send_and_recv_msgs(drv, msg, NULL, NULL);
4589 nla_put_failure:
4590 return -ENOBUFS;
4591 }
4592
4593
4594 static int i802_set_cts_protect(void *priv, int value)
4595 {
4596 return i802_set_bss(priv, value, -1, -1);
4597 }
4598
4599
4600 static int i802_set_preamble(void *priv, int value)
4601 {
4602 return i802_set_bss(priv, -1, value, -1);
4603 }
4604
4605
4606 static int i802_set_short_slot_time(void *priv, int value)
4607 {
4608 return i802_set_bss(priv, -1, -1, value);
4609 }
4610
4611
4612 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4613 const char *ifname, int vlan_id)
4614 {
4615 struct i802_bss *bss = priv;
4616 struct wpa_driver_nl80211_data *drv = bss->drv;
4617 struct nl_msg *msg;
4618 int ret = -ENOBUFS;
4619
4620 msg = nlmsg_alloc();
4621 if (!msg)
4622 return -ENOMEM;
4623
4624 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4625 0, NL80211_CMD_SET_STATION, 0);
4626
4627 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4628 if_nametoindex(bss->ifname));
4629 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4630 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4631 if_nametoindex(ifname));
4632
4633 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4634 if (ret < 0) {
4635 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4636 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4637 MAC2STR(addr), ifname, vlan_id, ret,
4638 strerror(-ret));
4639 }
4640 nla_put_failure:
4641 return ret;
4642 }
4643
4644
4645 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4646 {
4647 struct i802_bss *bss = priv;
4648 struct wpa_driver_nl80211_data *drv = bss->drv;
4649 char name[IFNAMSIZ + 1];
4650
4651 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
4652 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4653 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
4654 if (val) {
4655 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
4656 NULL, 1) < 0)
4657 return -1;
4658 linux_set_iface_flags(drv->ioctl_sock, name, 1);
4659 return i802_set_sta_vlan(priv, addr, name, 0);
4660 } else {
4661 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
4662 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4663 name);
4664 }
4665 }
4666
4667
4668 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4669 {
4670 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4671 struct sockaddr_ll lladdr;
4672 unsigned char buf[3000];
4673 int len;
4674 socklen_t fromlen = sizeof(lladdr);
4675
4676 len = recvfrom(sock, buf, sizeof(buf), 0,
4677 (struct sockaddr *)&lladdr, &fromlen);
4678 if (len < 0) {
4679 perror("recv");
4680 return;
4681 }
4682
4683 if (have_ifidx(drv, lladdr.sll_ifindex))
4684 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
4685 }
4686
4687
4688 static int i802_get_inact_sec(void *priv, const u8 *addr)
4689 {
4690 struct hostap_sta_driver_data data;
4691 int ret;
4692
4693 data.inactive_msec = (unsigned long) -1;
4694 ret = i802_read_sta_data(priv, &data, addr);
4695 if (ret || data.inactive_msec == (unsigned long) -1)
4696 return -1;
4697 return data.inactive_msec / 1000;
4698 }
4699
4700
4701 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4702 {
4703 #if 0
4704 /* TODO */
4705 #endif
4706 return 0;
4707 }
4708
4709
4710 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4711 int reason)
4712 {
4713 struct i802_bss *bss = priv;
4714 struct ieee80211_mgmt mgmt;
4715
4716 memset(&mgmt, 0, sizeof(mgmt));
4717 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4718 WLAN_FC_STYPE_DEAUTH);
4719 memcpy(mgmt.da, addr, ETH_ALEN);
4720 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4721 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4722 mgmt.u.deauth.reason_code = host_to_le16(reason);
4723 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4724 IEEE80211_HDRLEN +
4725 sizeof(mgmt.u.deauth));
4726 }
4727
4728
4729 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4730 int reason)
4731 {
4732 struct i802_bss *bss = priv;
4733 struct ieee80211_mgmt mgmt;
4734
4735 memset(&mgmt, 0, sizeof(mgmt));
4736 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4737 WLAN_FC_STYPE_DISASSOC);
4738 memcpy(mgmt.da, addr, ETH_ALEN);
4739 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4740 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4741 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4742 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
4743 IEEE80211_HDRLEN +
4744 sizeof(mgmt.u.disassoc));
4745 }
4746
4747
4748 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4749 const char *brname, const char *ifname)
4750 {
4751 int ifindex;
4752 char in_br[IFNAMSIZ];
4753
4754 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4755 ifindex = if_nametoindex(brname);
4756 if (ifindex == 0) {
4757 /*
4758 * Bridge was configured, but the bridge device does
4759 * not exist. Try to add it now.
4760 */
4761 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4762 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4763 "bridge interface %s: %s",
4764 brname, strerror(errno));
4765 return -1;
4766 }
4767 drv->added_bridge = 1;
4768 add_ifidx(drv, if_nametoindex(brname));
4769 }
4770
4771 if (linux_br_get(in_br, ifname) == 0) {
4772 if (os_strcmp(in_br, brname) == 0)
4773 return 0; /* already in the bridge */
4774
4775 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4776 "bridge %s", ifname, in_br);
4777 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4778 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4779 "remove interface %s from bridge "
4780 "%s: %s",
4781 ifname, brname, strerror(errno));
4782 return -1;
4783 }
4784 }
4785
4786 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4787 ifname, brname);
4788 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4789 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4790 "into bridge %s: %s",
4791 ifname, brname, strerror(errno));
4792 return -1;
4793 }
4794 drv->added_if_into_bridge = 1;
4795
4796 return 0;
4797 }
4798
4799
4800 static void *i802_init(struct hostapd_data *hapd,
4801 struct wpa_init_params *params)
4802 {
4803 struct wpa_driver_nl80211_data *drv;
4804 struct i802_bss *bss;
4805 size_t i;
4806 char brname[IFNAMSIZ];
4807 int ifindex, br_ifindex;
4808 int br_added = 0;
4809
4810 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4811 if (bss == NULL)
4812 return NULL;
4813
4814 drv = bss->drv;
4815 if (linux_br_get(brname, params->ifname) == 0) {
4816 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4817 params->ifname, brname);
4818 br_ifindex = if_nametoindex(brname);
4819 } else {
4820 brname[0] = '\0';
4821 br_ifindex = 0;
4822 }
4823
4824 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4825 drv->if_indices = drv->default_if_indices;
4826 for (i = 0; i < params->num_bridge; i++) {
4827 if (params->bridge[i]) {
4828 ifindex = if_nametoindex(params->bridge[i]);
4829 if (ifindex)
4830 add_ifidx(drv, ifindex);
4831 if (ifindex == br_ifindex)
4832 br_added = 1;
4833 }
4834 }
4835 if (!br_added && br_ifindex &&
4836 (params->num_bridge == 0 || !params->bridge[0]))
4837 add_ifidx(drv, br_ifindex);
4838
4839 /* start listening for EAPOL on the default AP interface */
4840 add_ifidx(drv, drv->ifindex);
4841
4842 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
4843 goto failed;
4844
4845 if (params->bssid) {
4846 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
4847 params->bssid))
4848 goto failed;
4849 }
4850
4851 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
4852 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4853 "into AP mode", bss->ifname);
4854 goto failed;
4855 }
4856
4857 if (params->num_bridge && params->bridge[0] &&
4858 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4859 goto failed;
4860
4861 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
4862 goto failed;
4863
4864 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4865 if (drv->eapol_sock < 0) {
4866 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4867 goto failed;
4868 }
4869
4870 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4871 {
4872 printf("Could not register read socket for eapol\n");
4873 goto failed;
4874 }
4875
4876 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
4877 goto failed;
4878
4879 return bss;
4880
4881 failed:
4882 nl80211_remove_monitor_interface(drv);
4883 if (drv->ioctl_sock >= 0)
4884 close(drv->ioctl_sock);
4885
4886 genl_family_put(drv->nl80211);
4887 nl_cache_free(drv->nl_cache);
4888 nl_handle_destroy(drv->nl_handle);
4889 nl_cb_put(drv->nl_cb);
4890
4891 os_free(drv);
4892 return NULL;
4893 }
4894
4895
4896 static void i802_deinit(void *priv)
4897 {
4898 wpa_driver_nl80211_deinit(priv);
4899 }
4900
4901 #endif /* HOSTAPD */
4902
4903
4904 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4905 enum wpa_driver_if_type type)
4906 {
4907 switch (type) {
4908 case WPA_IF_STATION:
4909 return NL80211_IFTYPE_STATION;
4910 case WPA_IF_AP_VLAN:
4911 return NL80211_IFTYPE_AP_VLAN;
4912 case WPA_IF_AP_BSS:
4913 return NL80211_IFTYPE_AP;
4914 }
4915 return -1;
4916 }
4917
4918
4919 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
4920 const char *ifname, const u8 *addr,
4921 void *bss_ctx, void **drv_priv,
4922 char *force_ifname, u8 *if_addr)
4923 {
4924 struct i802_bss *bss = priv;
4925 struct wpa_driver_nl80211_data *drv = bss->drv;
4926 int ifidx;
4927 #ifdef HOSTAPD
4928 struct i802_bss *new_bss = NULL;
4929
4930 if (type == WPA_IF_AP_BSS) {
4931 new_bss = os_zalloc(sizeof(*new_bss));
4932 if (new_bss == NULL)
4933 return -1;
4934 }
4935 #endif /* HOSTAPD */
4936
4937 if (addr)
4938 os_memcpy(if_addr, addr, ETH_ALEN);
4939 ifidx = nl80211_create_iface(drv, ifname,
4940 wpa_driver_nl80211_if_type(type), addr,
4941 0);
4942 if (ifidx < 0) {
4943 #ifdef HOSTAPD
4944 os_free(new_bss);
4945 #endif /* HOSTAPD */
4946 return -1;
4947 }
4948
4949 if (!addr &&
4950 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
4951 return -1;
4952
4953 #ifdef HOSTAPD
4954 if (type == WPA_IF_AP_BSS) {
4955 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4956 nl80211_remove_iface(drv, ifidx);
4957 os_free(new_bss);
4958 return -1;
4959 }
4960 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4961 new_bss->ifindex = ifidx;
4962 new_bss->drv = drv;
4963 new_bss->next = drv->first_bss.next;
4964 drv->first_bss.next = new_bss;
4965 if (drv_priv)
4966 *drv_priv = new_bss;
4967 }
4968 #endif /* HOSTAPD */
4969
4970 return 0;
4971 }
4972
4973
4974 static int wpa_driver_nl80211_if_remove(void *priv,
4975 enum wpa_driver_if_type type,
4976 const char *ifname)
4977 {
4978 struct i802_bss *bss = priv;
4979 struct wpa_driver_nl80211_data *drv = bss->drv;
4980 int ifindex = if_nametoindex(ifname);
4981
4982 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4983 __func__, type, ifname, ifindex);
4984 if (ifindex <= 0)
4985 return -1;
4986 nl80211_remove_iface(drv, ifindex);
4987
4988 #ifdef HOSTAPD
4989 if (type != WPA_IF_AP_BSS)
4990 return 0;
4991
4992 if (bss != &drv->first_bss) {
4993 struct i802_bss *tbss = &drv->first_bss;
4994
4995 while (tbss) {
4996 if (tbss->next != bss)
4997 continue;
4998
4999 tbss->next = bss->next;
5000 os_free(bss);
5001 break;
5002 }
5003 }
5004 #endif /* HOSTAPD */
5005
5006 return 0;
5007 }
5008
5009
5010 static int cookie_handler(struct nl_msg *msg, void *arg)
5011 {
5012 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5013 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5014 u64 *cookie = arg;
5015 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5016 genlmsg_attrlen(gnlh, 0), NULL);
5017 if (tb[NL80211_ATTR_COOKIE])
5018 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5019 return NL_SKIP;
5020 }
5021
5022
5023 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5024 const u8 *dst, const u8 *src,
5025 const u8 *bssid,
5026 const u8 *data, size_t data_len)
5027 {
5028 struct i802_bss *bss = priv;
5029 struct wpa_driver_nl80211_data *drv = bss->drv;
5030 int ret = -1;
5031 struct nl_msg *msg;
5032 u8 *buf;
5033 struct ieee80211_hdr *hdr;
5034 u64 cookie;
5035
5036 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5037 drv->ifindex);
5038
5039 buf = os_zalloc(24 + data_len);
5040 if (buf == NULL)
5041 return ret;
5042 os_memcpy(buf + 24, data, data_len);
5043 hdr = (struct ieee80211_hdr *) buf;
5044 hdr->frame_control =
5045 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5046 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5047 os_memcpy(hdr->addr2, src, ETH_ALEN);
5048 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5049
5050 if (drv->nlmode == NL80211_IFTYPE_AP) {
5051 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
5052 os_free(buf);
5053 return ret;
5054 }
5055
5056 msg = nlmsg_alloc();
5057 if (!msg) {
5058 os_free(buf);
5059 return -1;
5060 }
5061
5062 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5063 NL80211_CMD_ACTION, 0);
5064
5065 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5066 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5067 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
5068 os_free(buf);
5069 buf = NULL;
5070
5071 cookie = 0;
5072 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5073 msg = NULL;
5074 if (ret) {
5075 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
5076 "(%s)", ret, strerror(-ret));
5077 goto nla_put_failure;
5078 }
5079 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
5080 "cookie 0x%llx", (long long unsigned int) cookie);
5081 drv->send_action_cookie = cookie;
5082 drv->pending_send_action = 1;
5083 ret = 0;
5084
5085 nla_put_failure:
5086 os_free(buf);
5087 nlmsg_free(msg);
5088 return ret;
5089 }
5090
5091
5092 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5093 unsigned int duration)
5094 {
5095 struct i802_bss *bss = priv;
5096 struct wpa_driver_nl80211_data *drv = bss->drv;
5097 struct nl_msg *msg;
5098 int ret;
5099 u64 cookie;
5100
5101 msg = nlmsg_alloc();
5102 if (!msg)
5103 return -1;
5104
5105 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5106 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5107
5108 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5109 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5110 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5111
5112 cookie = 0;
5113 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5114 if (ret == 0) {
5115 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5116 "0x%llx for freq=%u MHz duration=%u",
5117 (long long unsigned int) cookie, freq, duration);
5118 drv->remain_on_chan_cookie = cookie;
5119 return 0;
5120 }
5121 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5122 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
5123 nla_put_failure:
5124 return -1;
5125 }
5126
5127
5128 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5129 {
5130 struct i802_bss *bss = priv;
5131 struct wpa_driver_nl80211_data *drv = bss->drv;
5132 struct nl_msg *msg;
5133 int ret;
5134
5135 if (!drv->pending_remain_on_chan) {
5136 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5137 "to cancel");
5138 return -1;
5139 }
5140
5141 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5142 "0x%llx",
5143 (long long unsigned int) drv->remain_on_chan_cookie);
5144
5145 msg = nlmsg_alloc();
5146 if (!msg)
5147 return -1;
5148
5149 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5150 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5151
5152 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5153 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5154
5155 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5156 if (ret == 0)
5157 return 0;
5158 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5159 "%d (%s)", ret, strerror(-ret));
5160 nla_put_failure:
5161 return -1;
5162 }
5163
5164
5165 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5166 void *timeout_ctx)
5167 {
5168 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5169 if (drv->monitor_ifidx < 0)
5170 return; /* monitor interface already removed */
5171
5172 if (drv->nlmode != NL80211_IFTYPE_STATION)
5173 return; /* not in station mode anymore */
5174
5175 if (drv->probe_req_report)
5176 return; /* reporting enabled */
5177
5178 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5179 "Probe Request reporting needed anymore");
5180 nl80211_remove_monitor_interface(drv);
5181 }
5182
5183
5184 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5185 {
5186 struct i802_bss *bss = priv;
5187 struct wpa_driver_nl80211_data *drv = bss->drv;
5188
5189 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5190 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5191 "allowed in station mode (iftype=%d)",
5192 drv->nlmode);
5193 return -1;
5194 }
5195 drv->probe_req_report = report;
5196
5197 if (report) {
5198 eloop_cancel_timeout(
5199 wpa_driver_nl80211_probe_req_report_timeout,
5200 drv, NULL);
5201 if (drv->monitor_ifidx < 0 &&
5202 nl80211_create_monitor_interface(drv))
5203 return -1;
5204 } else {
5205 /*
5206 * It takes a while to remove the monitor interface, so try to
5207 * avoid doing this if it is needed again shortly. Instead,
5208 * schedule the interface to be removed later if no need for it
5209 * is seen.
5210 */
5211 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5212 "to be removed after 10 seconds of no use");
5213 eloop_register_timeout(
5214 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5215 drv, NULL);
5216 }
5217
5218 return 0;
5219 }
5220
5221
5222 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5223 int ifindex, int disabled)
5224 {
5225 struct nl_msg *msg;
5226 struct nlattr *bands, *band;
5227 int ret;
5228
5229 msg = nlmsg_alloc();
5230 if (!msg)
5231 return -1;
5232
5233 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5234 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5235 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5236
5237 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5238 if (!bands)
5239 goto nla_put_failure;
5240
5241 /*
5242 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5243 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5244 * rates. All 5 GHz rates are left enabled.
5245 */
5246 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5247 if (!band)
5248 goto nla_put_failure;
5249 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5250 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5251 nla_nest_end(msg, band);
5252
5253 nla_nest_end(msg, bands);
5254
5255 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5256 msg = NULL;
5257 if (ret) {
5258 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5259 "(%s)", ret, strerror(-ret));
5260 }
5261
5262 return ret;
5263
5264 nla_put_failure:
5265 nlmsg_free(msg);
5266 return -1;
5267 }
5268
5269
5270 static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5271 {
5272 struct i802_bss *bss = priv;
5273 struct wpa_driver_nl80211_data *drv = bss->drv;
5274 drv->disable_11b_rates = disabled;
5275 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5276 }
5277
5278
5279 static int wpa_driver_nl80211_deinit_ap(void *priv)
5280 {
5281 struct i802_bss *bss = priv;
5282 struct wpa_driver_nl80211_data *drv = bss->drv;
5283 if (drv->nlmode != NL80211_IFTYPE_AP)
5284 return -1;
5285 wpa_driver_nl80211_del_beacon(drv);
5286 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
5287 }
5288
5289
5290 static void wpa_driver_nl80211_resume(void *priv)
5291 {
5292 struct i802_bss *bss = priv;
5293 struct wpa_driver_nl80211_data *drv = bss->drv;
5294 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
5295 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5296 "resume event");
5297 }
5298 }
5299
5300
5301 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5302 const u8 *ies, size_t ies_len)
5303 {
5304 struct i802_bss *bss = priv;
5305 struct wpa_driver_nl80211_data *drv = bss->drv;
5306 int ret;
5307 u8 *data, *pos;
5308 size_t data_len;
5309 u8 own_addr[ETH_ALEN];
5310
5311 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5312 return -1;
5313
5314 if (action != 1) {
5315 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5316 "action %d", action);
5317 return -1;
5318 }
5319
5320 /*
5321 * Action frame payload:
5322 * Category[1] = 6 (Fast BSS Transition)
5323 * Action[1] = 1 (Fast BSS Transition Request)
5324 * STA Address
5325 * Target AP Address
5326 * FT IEs
5327 */
5328
5329 data_len = 2 + 2 * ETH_ALEN + ies_len;
5330 data = os_malloc(data_len);
5331 if (data == NULL)
5332 return -1;
5333 pos = data;
5334 *pos++ = 0x06; /* FT Action category */
5335 *pos++ = action;
5336 os_memcpy(pos, own_addr, ETH_ALEN);
5337 pos += ETH_ALEN;
5338 os_memcpy(pos, target_ap, ETH_ALEN);
5339 pos += ETH_ALEN;
5340 os_memcpy(pos, ies, ies_len);
5341
5342 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5343 own_addr, drv->bssid,
5344 data, data_len);
5345 os_free(data);
5346
5347 return ret;
5348 }
5349
5350
5351 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5352 {
5353 struct i802_bss *bss = priv;
5354 struct wpa_driver_nl80211_data *drv = bss->drv;
5355 struct nl_msg *msg, *cqm = NULL;
5356
5357 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5358 "hysteresis=%d", threshold, hysteresis);
5359
5360 msg = nlmsg_alloc();
5361 if (!msg)
5362 return -1;
5363
5364 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5365 0, NL80211_CMD_SET_CQM, 0);
5366
5367 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5368
5369 cqm = nlmsg_alloc();
5370 if (cqm == NULL)
5371 return -1;
5372
5373 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5374 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5375 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5376
5377 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5378 return 0;
5379 msg = NULL;
5380
5381 nla_put_failure:
5382 if (cqm)
5383 nlmsg_free(cqm);
5384 nlmsg_free(msg);
5385 return -1;
5386 }
5387
5388
5389 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5390 int encrypt)
5391 {
5392 struct i802_bss *bss = priv;
5393 struct wpa_driver_nl80211_data *drv = bss->drv;
5394 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5395 }
5396
5397
5398 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5399 .name = "nl80211",
5400 .desc = "Linux nl80211/cfg80211",
5401 .get_bssid = wpa_driver_nl80211_get_bssid,
5402 .get_ssid = wpa_driver_nl80211_get_ssid,
5403 .set_key = wpa_driver_nl80211_set_key,
5404 .scan2 = wpa_driver_nl80211_scan,
5405 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5406 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5407 .disassociate = wpa_driver_nl80211_disassociate,
5408 .authenticate = wpa_driver_nl80211_authenticate,
5409 .associate = wpa_driver_nl80211_associate,
5410 .init = wpa_driver_nl80211_init,
5411 .deinit = wpa_driver_nl80211_deinit,
5412 .get_capa = wpa_driver_nl80211_get_capa,
5413 .set_operstate = wpa_driver_nl80211_set_operstate,
5414 .set_supp_port = wpa_driver_nl80211_set_supp_port,
5415 .set_country = wpa_driver_nl80211_set_country,
5416 .set_beacon = wpa_driver_nl80211_set_beacon,
5417 .if_add = wpa_driver_nl80211_if_add,
5418 .if_remove = wpa_driver_nl80211_if_remove,
5419 .send_mlme = wpa_driver_nl80211_send_mlme,
5420 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
5421 .sta_add = wpa_driver_nl80211_sta_add,
5422 .sta_remove = wpa_driver_nl80211_sta_remove,
5423 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
5424 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
5425 #ifdef HOSTAPD
5426 .hapd_init = i802_init,
5427 .hapd_deinit = i802_deinit,
5428 .get_seqnum = i802_get_seqnum,
5429 .flush = i802_flush,
5430 .read_sta_data = i802_read_sta_data,
5431 .sta_deauth = i802_sta_deauth,
5432 .sta_disassoc = i802_sta_disassoc,
5433 .get_inact_sec = i802_get_inact_sec,
5434 .sta_clear_stats = i802_sta_clear_stats,
5435 .set_rts = i802_set_rts,
5436 .set_frag = i802_set_frag,
5437 .set_rate_sets = i802_set_rate_sets,
5438 .set_cts_protect = i802_set_cts_protect,
5439 .set_preamble = i802_set_preamble,
5440 .set_short_slot_time = i802_set_short_slot_time,
5441 .set_tx_queue_params = i802_set_tx_queue_params,
5442 .set_sta_vlan = i802_set_sta_vlan,
5443 .set_wds_sta = i802_set_wds_sta,
5444 #endif /* HOSTAPD */
5445 .set_freq = i802_set_freq,
5446 .send_action = wpa_driver_nl80211_send_action,
5447 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5448 .cancel_remain_on_channel =
5449 wpa_driver_nl80211_cancel_remain_on_channel,
5450 .probe_req_report = wpa_driver_nl80211_probe_req_report,
5451 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
5452 .deinit_ap = wpa_driver_nl80211_deinit_ap,
5453 .resume = wpa_driver_nl80211_resume,
5454 .send_ft_action = nl80211_send_ft_action,
5455 .signal_monitor = nl80211_signal_monitor,
5456 .send_frame = nl80211_send_frame,
5457 };
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