]> git.ipfire.org Git - thirdparty/hostap.git/blob - src/drivers/driver_nl80211.c
projects / thirdparty / hostap.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
nl80211: Use couple more os_*() wrappers for allocation
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
1 /*
2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2008, 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, 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_arp.h>
22 #include <net/if.h>
23 #include <netlink/genl/genl.h>
24 #include <netlink/genl/family.h>
25 #include <netlink/genl/ctrl.h>
26 #include <netpacket/packet.h>
27 #include <linux/filter.h>
28 #include "nl80211_copy.h"
29
30 #include "common.h"
31 #include "eloop.h"
32 #include "common/ieee802_11_defs.h"
33 #include "netlink.h"
34 #include "radiotap.h"
35 #include "radiotap_iter.h"
36 #include "driver.h"
37
38 #ifdef CONFIG_LIBNL20
39 /* libnl 2.0 compatibility code */
40 #define nl_handle nl_sock
41 #define nl_handle_alloc_cb nl_socket_alloc_cb
42 #define nl_handle_destroy nl_socket_free
43 #endif /* CONFIG_LIBNL20 */
44
45
46 #ifndef IFF_LOWER_UP
47 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
48 #endif
49 #ifndef IFF_DORMANT
50 #define IFF_DORMANT 0x20000 /* driver signals dormant */
51 #endif
52
53 #ifndef IF_OPER_DORMANT
54 #define IF_OPER_DORMANT 5
55 #endif
56 #ifndef IF_OPER_UP
57 #define IF_OPER_UP 6
58 #endif
59
60 struct i802_bss {
61 struct i802_bss *next;
62 int ifindex;
63 unsigned int beacon_set:1;
64 };
65
66 struct wpa_driver_nl80211_data {
67 void *ctx;
68 struct netlink_data *netlink;
69 int ioctl_sock; /* socket for ioctl() use */
70 char ifname[IFNAMSIZ + 1];
71 int ifindex;
72 int if_removed;
73 struct wpa_driver_capa capa;
74 int has_capability;
75
76 int operstate;
77
78 int scan_complete_events;
79
80 struct nl_handle *nl_handle;
81 struct nl_handle *nl_handle_event;
82 struct nl_cache *nl_cache;
83 struct nl_cache *nl_cache_event;
84 struct nl_cb *nl_cb;
85 struct genl_family *nl80211;
86
87 u8 auth_bssid[ETH_ALEN];
88 u8 bssid[ETH_ALEN];
89 int associated;
90 u8 ssid[32];
91 size_t ssid_len;
92 int nlmode;
93 int ap_scan_as_station;
94
95 int monitor_sock;
96 int monitor_ifidx;
97
98 unsigned int beacon_set:1;
99
100 #ifdef HOSTAPD
101 int eapol_sock; /* socket for EAPOL frames */
102
103 int default_if_indices[16];
104 int *if_indices;
105 int num_if_indices;
106
107 struct i802_bss bss;
108
109 int last_freq;
110 int last_freq_ht;
111 #endif /* HOSTAPD */
112 };
113
114
115 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
116 void *timeout_ctx);
117 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
118 static int
119 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
120 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
121 const u8 *addr, int cmd, u16 reason_code);
122 static void nl80211_remove_monitor_interface(
123 struct wpa_driver_nl80211_data *drv);
124
125 #ifdef HOSTAPD
126 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
127 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
128 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
129 int ifindex);
130 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
131 #endif /* HOSTAPD */
132
133
134 /* nl80211 code */
135 static int ack_handler(struct nl_msg *msg, void *arg)
136 {
137 int *err = arg;
138 *err = 0;
139 return NL_STOP;
140 }
141
142 static int finish_handler(struct nl_msg *msg, void *arg)
143 {
144 int *ret = arg;
145 *ret = 0;
146 return NL_SKIP;
147 }
148
149 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
150 void *arg)
151 {
152 int *ret = arg;
153 *ret = err->error;
154 return NL_SKIP;
155 }
156
157
158 static int no_seq_check(struct nl_msg *msg, void *arg)
159 {
160 return NL_OK;
161 }
162
163
164 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
165 struct nl_msg *msg,
166 int (*valid_handler)(struct nl_msg *, void *),
167 void *valid_data)
168 {
169 struct nl_cb *cb;
170 int err = -ENOMEM;
171
172 cb = nl_cb_clone(drv->nl_cb);
173 if (!cb)
174 goto out;
175
176 err = nl_send_auto_complete(drv->nl_handle, msg);
177 if (err < 0)
178 goto out;
179
180 err = 1;
181
182 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
183 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
184 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
185
186 if (valid_handler)
187 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
188 valid_handler, valid_data);
189
190 while (err > 0)
191 nl_recvmsgs(drv->nl_handle, cb);
192 out:
193 nl_cb_put(cb);
194 nlmsg_free(msg);
195 return err;
196 }
197
198
199 struct family_data {
200 const char *group;
201 int id;
202 };
203
204
205 static int family_handler(struct nl_msg *msg, void *arg)
206 {
207 struct family_data *res = arg;
208 struct nlattr *tb[CTRL_ATTR_MAX + 1];
209 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
210 struct nlattr *mcgrp;
211 int i;
212
213 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
214 genlmsg_attrlen(gnlh, 0), NULL);
215 if (!tb[CTRL_ATTR_MCAST_GROUPS])
216 return NL_SKIP;
217
218 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
219 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
220 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
221 nla_len(mcgrp), NULL);
222 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
223 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
224 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
225 res->group,
226 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
227 continue;
228 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
229 break;
230 };
231
232 return NL_SKIP;
233 }
234
235
236 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
237 const char *family, const char *group)
238 {
239 struct nl_msg *msg;
240 int ret = -1;
241 struct family_data res = { group, -ENOENT };
242
243 msg = nlmsg_alloc();
244 if (!msg)
245 return -ENOMEM;
246 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
247 0, 0, CTRL_CMD_GETFAMILY, 0);
248 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
249
250 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
251 msg = NULL;
252 if (ret == 0)
253 ret = res.id;
254
255 nla_put_failure:
256 nlmsg_free(msg);
257 return ret;
258 }
259
260
261 #ifdef HOSTAPD
262 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
263 const char *ifname, u8 *addr)
264 {
265 struct ifreq ifr;
266
267 os_memset(&ifr, 0, sizeof(ifr));
268 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
269 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
270 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
271 ifname, errno, strerror(errno));
272 return -1;
273 }
274
275 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
276 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
277 ifname, ifr.ifr_hwaddr.sa_family);
278 return -1;
279 }
280 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
281
282 return 0;
283 }
284
285
286 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
287 const char *ifname, const u8 *addr)
288 {
289 struct ifreq ifr;
290
291 os_memset(&ifr, 0, sizeof(ifr));
292 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
293 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
294 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
295
296 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
297 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
298 ifname, errno, strerror(errno));
299 return -1;
300 }
301
302 return 0;
303 }
304 #endif /* HOSTAPD */
305
306
307 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
308 {
309 struct wpa_driver_nl80211_data *drv = priv;
310 if (!drv->associated)
311 return -1;
312 os_memcpy(bssid, drv->bssid, ETH_ALEN);
313 return 0;
314 }
315
316
317 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
318 {
319 struct wpa_driver_nl80211_data *drv = priv;
320 if (!drv->associated)
321 return -1;
322 os_memcpy(ssid, drv->ssid, drv->ssid_len);
323 return drv->ssid_len;
324 }
325
326
327 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
328 char *buf, size_t len, int del)
329 {
330 union wpa_event_data event;
331
332 os_memset(&event, 0, sizeof(event));
333 if (len > sizeof(event.interface_status.ifname))
334 len = sizeof(event.interface_status.ifname) - 1;
335 os_memcpy(event.interface_status.ifname, buf, len);
336 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
337 EVENT_INTERFACE_ADDED;
338
339 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
340 del ? "DEL" : "NEW",
341 event.interface_status.ifname,
342 del ? "removed" : "added");
343
344 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
345 if (del)
346 drv->if_removed = 1;
347 else
348 drv->if_removed = 0;
349 }
350
351 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
352 }
353
354
355 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
356 u8 *buf, size_t len)
357 {
358 int attrlen, rta_len;
359 struct rtattr *attr;
360
361 attrlen = len;
362 attr = (struct rtattr *) buf;
363
364 rta_len = RTA_ALIGN(sizeof(struct rtattr));
365 while (RTA_OK(attr, attrlen)) {
366 if (attr->rta_type == IFLA_IFNAME) {
367 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
368 == 0)
369 return 1;
370 else
371 break;
372 }
373 attr = RTA_NEXT(attr, attrlen);
374 }
375
376 return 0;
377 }
378
379
380 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
381 int ifindex, u8 *buf, size_t len)
382 {
383 if (drv->ifindex == ifindex)
384 return 1;
385
386 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
387 drv->ifindex = if_nametoindex(drv->ifname);
388 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
389 "interface");
390 wpa_driver_nl80211_finish_drv_init(drv);
391 return 1;
392 }
393
394 return 0;
395 }
396
397
398 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
399 struct ifinfomsg *ifi,
400 u8 *buf, size_t len)
401 {
402 struct wpa_driver_nl80211_data *drv = ctx;
403 int attrlen, rta_len;
404 struct rtattr *attr;
405
406 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
407 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
408 ifi->ifi_index);
409 return;
410 }
411
412 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
413 "(%s%s%s%s)",
414 drv->operstate, ifi->ifi_flags,
415 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
416 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
417 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
418 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
419 /*
420 * Some drivers send the association event before the operup event--in
421 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
422 * fails. This will hit us when wpa_supplicant does not need to do
423 * IEEE 802.1X authentication
424 */
425 if (drv->operstate == 1 &&
426 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
427 !(ifi->ifi_flags & IFF_RUNNING))
428 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
429 -1, IF_OPER_UP);
430
431 attrlen = len;
432 attr = (struct rtattr *) buf;
433 rta_len = RTA_ALIGN(sizeof(struct rtattr));
434 while (RTA_OK(attr, attrlen)) {
435 if (attr->rta_type == IFLA_IFNAME) {
436 wpa_driver_nl80211_event_link(
437 drv,
438 ((char *) attr) + rta_len,
439 attr->rta_len - rta_len, 0);
440 }
441 attr = RTA_NEXT(attr, attrlen);
442 }
443 }
444
445
446 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
447 struct ifinfomsg *ifi,
448 u8 *buf, size_t len)
449 {
450 struct wpa_driver_nl80211_data *drv = ctx;
451 int attrlen, rta_len;
452 struct rtattr *attr;
453
454 attrlen = len;
455 attr = (struct rtattr *) buf;
456
457 rta_len = RTA_ALIGN(sizeof(struct rtattr));
458 while (RTA_OK(attr, attrlen)) {
459 if (attr->rta_type == IFLA_IFNAME) {
460 wpa_driver_nl80211_event_link(
461 drv,
462 ((char *) attr) + rta_len,
463 attr->rta_len - rta_len, 1);
464 }
465 attr = RTA_NEXT(attr, attrlen);
466 }
467 }
468
469
470 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
471 const u8 *frame, size_t len)
472 {
473 const struct ieee80211_mgmt *mgmt;
474 union wpa_event_data event;
475
476 mgmt = (const struct ieee80211_mgmt *) frame;
477 if (len < 24 + sizeof(mgmt->u.auth)) {
478 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
479 "frame");
480 return;
481 }
482
483 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
484 os_memset(&event, 0, sizeof(event));
485 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
486 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
487 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
488 if (len > 24 + sizeof(mgmt->u.auth)) {
489 event.auth.ies = mgmt->u.auth.variable;
490 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
491 }
492
493 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
494 }
495
496
497 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
498 const u8 *frame, size_t len)
499 {
500 const struct ieee80211_mgmt *mgmt;
501 union wpa_event_data event;
502 u16 status;
503
504 mgmt = (const struct ieee80211_mgmt *) frame;
505 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
506 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
507 "frame");
508 return;
509 }
510
511 status = le_to_host16(mgmt->u.assoc_resp.status_code);
512 if (status != WLAN_STATUS_SUCCESS) {
513 os_memset(&event, 0, sizeof(event));
514 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
515 event.assoc_reject.resp_ies =
516 (u8 *) mgmt->u.assoc_resp.variable;
517 event.assoc_reject.resp_ies_len =
518 len - 24 - sizeof(mgmt->u.assoc_resp);
519 }
520 event.assoc_reject.status_code = status;
521
522 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
523 return;
524 }
525
526 drv->associated = 1;
527 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
528
529 os_memset(&event, 0, sizeof(event));
530 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
531 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
532 event.assoc_info.resp_ies_len =
533 len - 24 - sizeof(mgmt->u.assoc_resp);
534 }
535
536 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
537 }
538
539
540 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
541 enum nl80211_commands cmd, struct nlattr *status,
542 struct nlattr *addr, struct nlattr *req_ie,
543 struct nlattr *resp_ie)
544 {
545 union wpa_event_data event;
546
547 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
548 /*
549 * Avoid reporting two association events that would confuse
550 * the core code.
551 */
552 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
553 "when using userspace SME", cmd);
554 return;
555 }
556
557 os_memset(&event, 0, sizeof(event));
558 if (cmd == NL80211_CMD_CONNECT &&
559 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
560 if (resp_ie) {
561 event.assoc_reject.resp_ies = nla_data(resp_ie);
562 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
563 }
564 event.assoc_reject.status_code = nla_get_u16(status);
565 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
566 return;
567 }
568
569 drv->associated = 1;
570 if (addr)
571 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
572
573 if (req_ie) {
574 event.assoc_info.req_ies = nla_data(req_ie);
575 event.assoc_info.req_ies_len = nla_len(req_ie);
576 }
577 if (resp_ie) {
578 event.assoc_info.resp_ies = nla_data(resp_ie);
579 event.assoc_info.resp_ies_len = nla_len(resp_ie);
580 }
581
582 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
583 }
584
585
586 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
587 enum nl80211_commands cmd, struct nlattr *addr)
588 {
589 union wpa_event_data event;
590 enum wpa_event_type ev;
591
592 if (nla_len(addr) != ETH_ALEN)
593 return;
594
595 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
596 cmd, MAC2STR((u8 *) nla_data(addr)));
597
598 if (cmd == NL80211_CMD_AUTHENTICATE)
599 ev = EVENT_AUTH_TIMED_OUT;
600 else if (cmd == NL80211_CMD_ASSOCIATE)
601 ev = EVENT_ASSOC_TIMED_OUT;
602 else
603 return;
604
605 os_memset(&event, 0, sizeof(event));
606 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
607 wpa_supplicant_event(drv->ctx, ev, &event);
608 }
609
610
611 static void mlme_event(struct wpa_driver_nl80211_data *drv,
612 enum nl80211_commands cmd, struct nlattr *frame,
613 struct nlattr *addr, struct nlattr *timed_out)
614 {
615 if (timed_out && addr) {
616 mlme_timeout_event(drv, cmd, addr);
617 return;
618 }
619
620 if (frame == NULL) {
621 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
622 "data", cmd);
623 return;
624 }
625
626 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
627 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
628 nla_data(frame), nla_len(frame));
629
630 switch (cmd) {
631 case NL80211_CMD_AUTHENTICATE:
632 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
633 break;
634 case NL80211_CMD_ASSOCIATE:
635 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
636 break;
637 case NL80211_CMD_DEAUTHENTICATE:
638 drv->associated = 0;
639 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
640 break;
641 case NL80211_CMD_DISASSOCIATE:
642 drv->associated = 0;
643 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
644 break;
645 default:
646 break;
647 }
648 }
649
650
651 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
652 struct nlattr *tb[])
653 {
654 union wpa_event_data data;
655
656 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
657 os_memset(&data, 0, sizeof(data));
658 if (tb[NL80211_ATTR_MAC]) {
659 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
660 nla_data(tb[NL80211_ATTR_MAC]),
661 nla_len(tb[NL80211_ATTR_MAC]));
662 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
663 }
664 if (tb[NL80211_ATTR_KEY_SEQ]) {
665 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
666 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
667 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
668 }
669 if (tb[NL80211_ATTR_KEY_TYPE]) {
670 enum nl80211_key_type key_type =
671 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
672 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
673 if (key_type == NL80211_KEYTYPE_PAIRWISE)
674 data.michael_mic_failure.unicast = 1;
675 } else
676 data.michael_mic_failure.unicast = 1;
677
678 if (tb[NL80211_ATTR_KEY_IDX]) {
679 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
680 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
681 }
682
683 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
684 }
685
686
687 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
688 struct nlattr *tb[])
689 {
690 if (tb[NL80211_ATTR_MAC] == NULL) {
691 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
692 "event");
693 return;
694 }
695 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
696 drv->associated = 1;
697 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
698 MAC2STR(drv->bssid));
699
700 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
701 }
702
703
704 static int process_event(struct nl_msg *msg, void *arg)
705 {
706 struct wpa_driver_nl80211_data *drv = arg;
707 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
708 struct nlattr *tb[NL80211_ATTR_MAX + 1];
709
710 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
711 genlmsg_attrlen(gnlh, 0), NULL);
712
713 if (tb[NL80211_ATTR_IFINDEX]) {
714 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
715 if (ifindex != drv->ifindex) {
716 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
717 " for foreign interface (ifindex %d)",
718 gnlh->cmd, ifindex);
719 return NL_SKIP;
720 }
721 }
722
723 if (drv->ap_scan_as_station &&
724 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
725 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
726 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
727 drv->ap_scan_as_station = 0;
728 }
729
730 switch (gnlh->cmd) {
731 case NL80211_CMD_TRIGGER_SCAN:
732 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
733 break;
734 case NL80211_CMD_NEW_SCAN_RESULTS:
735 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
736 drv->scan_complete_events = 1;
737 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
738 drv->ctx);
739 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
740 break;
741 case NL80211_CMD_SCAN_ABORTED:
742 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
743 /*
744 * Need to indicate that scan results are available in order
745 * not to make wpa_supplicant stop its scanning.
746 */
747 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
748 drv->ctx);
749 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
750 break;
751 case NL80211_CMD_AUTHENTICATE:
752 case NL80211_CMD_ASSOCIATE:
753 case NL80211_CMD_DEAUTHENTICATE:
754 case NL80211_CMD_DISASSOCIATE:
755 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
756 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
757 break;
758 case NL80211_CMD_CONNECT:
759 case NL80211_CMD_ROAM:
760 mlme_event_connect(drv, gnlh->cmd,
761 tb[NL80211_ATTR_STATUS_CODE],
762 tb[NL80211_ATTR_MAC],
763 tb[NL80211_ATTR_REQ_IE],
764 tb[NL80211_ATTR_RESP_IE]);
765 break;
766 case NL80211_CMD_DISCONNECT:
767 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
768 /*
769 * Avoid reporting two disassociation events that could
770 * confuse the core code.
771 */
772 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
773 "event when using userspace SME");
774 break;
775 }
776 drv->associated = 0;
777 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
778 break;
779 case NL80211_CMD_MICHAEL_MIC_FAILURE:
780 mlme_event_michael_mic_failure(drv, tb);
781 break;
782 case NL80211_CMD_JOIN_IBSS:
783 mlme_event_join_ibss(drv, tb);
784 break;
785 default:
786 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
787 "(cmd=%d)", gnlh->cmd);
788 break;
789 }
790
791 return NL_SKIP;
792 }
793
794
795 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
796 void *sock_ctx)
797 {
798 struct nl_cb *cb;
799 struct wpa_driver_nl80211_data *drv = eloop_ctx;
800
801 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
802
803 cb = nl_cb_clone(drv->nl_cb);
804 if (!cb)
805 return;
806 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
807 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
808 nl_recvmsgs(drv->nl_handle_event, cb);
809 nl_cb_put(cb);
810 }
811
812
813 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
814 const char *ifname, int dev_up)
815 {
816 struct ifreq ifr;
817
818 if (drv->ioctl_sock < 0)
819 return -1;
820
821 os_memset(&ifr, 0, sizeof(ifr));
822 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
823
824 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
825 perror("ioctl[SIOCGIFFLAGS]");
826 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
827 ifname);
828 return -1;
829 }
830
831 if (dev_up) {
832 if (ifr.ifr_flags & IFF_UP)
833 return 0;
834 ifr.ifr_flags |= IFF_UP;
835 } else {
836 if (!(ifr.ifr_flags & IFF_UP))
837 return 0;
838 ifr.ifr_flags &= ~IFF_UP;
839 }
840
841 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
842 perror("ioctl[SIOCSIFFLAGS]");
843 return -1;
844 }
845
846 return 0;
847 }
848
849
850 /**
851 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
852 * @priv: driver_nl80211 private data
853 * @alpha2_arg: country to which to switch to
854 * Returns: 0 on success, -1 on failure
855 *
856 * This asks nl80211 to set the regulatory domain for given
857 * country ISO / IEC alpha2.
858 */
859 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
860 {
861 struct wpa_driver_nl80211_data *drv = priv;
862 char alpha2[3];
863 struct nl_msg *msg;
864
865 msg = nlmsg_alloc();
866 if (!msg)
867 return -ENOMEM;
868
869 alpha2[0] = alpha2_arg[0];
870 alpha2[1] = alpha2_arg[1];
871 alpha2[2] = '\0';
872
873 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
874 0, NL80211_CMD_REQ_SET_REG, 0);
875
876 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
877 if (send_and_recv_msgs(drv, msg, NULL, NULL))
878 return -EINVAL;
879 return 0;
880 nla_put_failure:
881 return -EINVAL;
882 }
883
884
885 #ifndef HOSTAPD
886 struct wiphy_info_data {
887 int max_scan_ssids;
888 int ap_supported;
889 int auth_supported;
890 int connect_supported;
891 };
892
893
894 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
895 {
896 struct nlattr *tb[NL80211_ATTR_MAX + 1];
897 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
898 struct wiphy_info_data *info = arg;
899
900 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
901 genlmsg_attrlen(gnlh, 0), NULL);
902
903 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
904 info->max_scan_ssids =
905 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
906
907 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
908 struct nlattr *nl_mode;
909 int i;
910 nla_for_each_nested(nl_mode,
911 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
912 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
913 info->ap_supported = 1;
914 break;
915 }
916 }
917 }
918
919 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
920 struct nlattr *nl_cmd;
921 int i;
922
923 nla_for_each_nested(nl_cmd,
924 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
925 u32 cmd = nla_get_u32(nl_cmd);
926 if (cmd == NL80211_CMD_AUTHENTICATE)
927 info->auth_supported = 1;
928 else if (cmd == NL80211_CMD_CONNECT)
929 info->connect_supported = 1;
930 }
931 }
932
933 return NL_SKIP;
934 }
935
936
937 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
938 struct wiphy_info_data *info)
939 {
940 struct nl_msg *msg;
941
942 os_memset(info, 0, sizeof(*info));
943 msg = nlmsg_alloc();
944 if (!msg)
945 return -1;
946
947 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
948 0, NL80211_CMD_GET_WIPHY, 0);
949
950 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
951
952 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
953 return 0;
954 msg = NULL;
955 nla_put_failure:
956 nlmsg_free(msg);
957 return -1;
958 }
959
960
961 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
962 {
963 struct wiphy_info_data info;
964 if (wpa_driver_nl80211_get_info(drv, &info))
965 return -1;
966 drv->has_capability = 1;
967 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
968 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
969 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
970 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
971 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
972 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
973 WPA_DRIVER_CAPA_ENC_WEP104 |
974 WPA_DRIVER_CAPA_ENC_TKIP |
975 WPA_DRIVER_CAPA_ENC_CCMP;
976
977 drv->capa.max_scan_ssids = info.max_scan_ssids;
978 if (info.ap_supported)
979 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
980
981 if (info.auth_supported)
982 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
983 else if (!info.connect_supported) {
984 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
985 "authentication/association or connect commands");
986 return -1;
987 }
988
989 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
990
991 return 0;
992 }
993 #endif /* HOSTAPD */
994
995
996 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
997 void *ctx)
998 {
999 int ret;
1000
1001 /* Initialize generic netlink and nl80211 */
1002
1003 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1004 if (drv->nl_cb == NULL) {
1005 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1006 "callbacks");
1007 goto err1;
1008 }
1009
1010 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1011 if (drv->nl_handle == NULL) {
1012 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1013 "callbacks");
1014 goto err2;
1015 }
1016
1017 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1018 if (drv->nl_handle_event == NULL) {
1019 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1020 "callbacks (event)");
1021 goto err2b;
1022 }
1023
1024 if (genl_connect(drv->nl_handle)) {
1025 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1026 "netlink");
1027 goto err3;
1028 }
1029
1030 if (genl_connect(drv->nl_handle_event)) {
1031 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1032 "netlink (event)");
1033 goto err3;
1034 }
1035
1036 #ifdef CONFIG_LIBNL20
1037 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1038 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1039 "netlink cache");
1040 goto err3;
1041 }
1042 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1043 0) {
1044 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1045 "netlink cache (event)");
1046 goto err3b;
1047 }
1048 #else /* CONFIG_LIBNL20 */
1049 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1050 if (drv->nl_cache == NULL) {
1051 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1052 "netlink cache");
1053 goto err3;
1054 }
1055 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1056 if (drv->nl_cache_event == NULL) {
1057 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1058 "netlink cache (event)");
1059 goto err3b;
1060 }
1061 #endif /* CONFIG_LIBNL20 */
1062
1063 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1064 if (drv->nl80211 == NULL) {
1065 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1066 "found");
1067 goto err4;
1068 }
1069
1070 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1071 if (ret >= 0)
1072 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1073 if (ret < 0) {
1074 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1075 "membership for scan events: %d (%s)",
1076 ret, strerror(-ret));
1077 goto err4;
1078 }
1079
1080 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1081 if (ret >= 0)
1082 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1083 if (ret < 0) {
1084 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1085 "membership for mlme events: %d (%s)",
1086 ret, strerror(-ret));
1087 goto err4;
1088 }
1089
1090 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1091 wpa_driver_nl80211_event_receive, drv, ctx);
1092
1093 return 0;
1094
1095 err4:
1096 nl_cache_free(drv->nl_cache_event);
1097 err3b:
1098 nl_cache_free(drv->nl_cache);
1099 err3:
1100 nl_handle_destroy(drv->nl_handle_event);
1101 err2b:
1102 nl_handle_destroy(drv->nl_handle);
1103 err2:
1104 nl_cb_put(drv->nl_cb);
1105 err1:
1106 return -1;
1107 }
1108
1109
1110 /**
1111 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1112 * @ctx: context to be used when calling wpa_supplicant functions,
1113 * e.g., wpa_supplicant_event()
1114 * @ifname: interface name, e.g., wlan0
1115 * Returns: Pointer to private data, %NULL on failure
1116 */
1117 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1118 {
1119 struct wpa_driver_nl80211_data *drv;
1120 struct netlink_config *cfg;
1121
1122 drv = os_zalloc(sizeof(*drv));
1123 if (drv == NULL)
1124 return NULL;
1125 drv->ctx = ctx;
1126 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1127 drv->monitor_ifidx = -1;
1128 drv->monitor_sock = -1;
1129 drv->ioctl_sock = -1;
1130
1131 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1132 os_free(drv);
1133 return NULL;
1134 }
1135
1136 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1137 if (drv->ioctl_sock < 0) {
1138 perror("socket(PF_INET,SOCK_DGRAM)");
1139 goto failed;
1140 }
1141
1142 cfg = os_zalloc(sizeof(*cfg));
1143 if (cfg == NULL)
1144 goto failed;
1145 cfg->ctx = drv;
1146 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1147 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1148 drv->netlink = netlink_init(cfg);
1149 if (drv->netlink == NULL) {
1150 os_free(cfg);
1151 goto failed;
1152 }
1153 if (wpa_driver_nl80211_finish_drv_init(drv))
1154 goto failed;
1155
1156 return drv;
1157
1158 failed:
1159 netlink_deinit(drv->netlink);
1160 if (drv->ioctl_sock >= 0)
1161 close(drv->ioctl_sock);
1162
1163 genl_family_put(drv->nl80211);
1164 nl_cache_free(drv->nl_cache);
1165 nl_handle_destroy(drv->nl_handle);
1166 nl_cb_put(drv->nl_cb);
1167
1168 os_free(drv);
1169 return NULL;
1170 }
1171
1172
1173 static int
1174 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1175 {
1176 drv->ifindex = if_nametoindex(drv->ifname);
1177
1178 #ifndef HOSTAPD
1179 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1180 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1181 "use managed mode");
1182 }
1183
1184 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1185 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1186 "UP", drv->ifname);
1187 return -1;
1188 }
1189
1190 if (wpa_driver_nl80211_capa(drv))
1191 return -1;
1192
1193 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1194 1, IF_OPER_DORMANT);
1195 #endif /* HOSTAPD */
1196
1197 return 0;
1198 }
1199
1200
1201 #ifdef HOSTAPD
1202 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1203 {
1204 struct i802_bss *bss, *prev;
1205 bss = drv->bss.next;
1206 while (bss) {
1207 prev = bss;
1208 bss = bss->next;
1209 os_free(bss);
1210 }
1211 }
1212 #endif /* HOSTAPD */
1213
1214
1215 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1216 {
1217 struct nl_msg *msg;
1218
1219 msg = nlmsg_alloc();
1220 if (!msg)
1221 return -ENOMEM;
1222
1223 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1224 0, NL80211_CMD_DEL_BEACON, 0);
1225 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1226
1227 return send_and_recv_msgs(drv, msg, NULL, NULL);
1228 nla_put_failure:
1229 return -ENOBUFS;
1230 }
1231
1232
1233 /**
1234 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1235 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1236 *
1237 * Shut down driver interface and processing of driver events. Free
1238 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1239 */
1240 static void wpa_driver_nl80211_deinit(void *priv)
1241 {
1242 struct wpa_driver_nl80211_data *drv = priv;
1243
1244 nl80211_remove_monitor_interface(drv);
1245 if (drv->monitor_sock >= 0) {
1246 eloop_unregister_read_sock(drv->monitor_sock);
1247 close(drv->monitor_sock);
1248 }
1249
1250 if (drv->nlmode == NL80211_IFTYPE_AP)
1251 wpa_driver_nl80211_del_beacon(drv);
1252
1253 #ifdef HOSTAPD
1254 if (drv->last_freq_ht) {
1255 /* Clear HT flags from the driver */
1256 struct hostapd_freq_params freq;
1257 os_memset(&freq, 0, sizeof(freq));
1258 freq.freq = drv->last_freq;
1259 i802_set_freq(priv, &freq);
1260 }
1261
1262 if (drv->eapol_sock >= 0) {
1263 eloop_unregister_read_sock(drv->eapol_sock);
1264 close(drv->eapol_sock);
1265 }
1266
1267 if (drv->if_indices != drv->default_if_indices)
1268 os_free(drv->if_indices);
1269
1270 wpa_driver_nl80211_free_bss(drv);
1271 #endif /* HOSTAPD */
1272
1273 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1274 netlink_deinit(drv->netlink);
1275
1276 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1277
1278 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1279 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1280
1281 if (drv->ioctl_sock >= 0)
1282 close(drv->ioctl_sock);
1283
1284 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1285 genl_family_put(drv->nl80211);
1286 nl_cache_free(drv->nl_cache);
1287 nl_cache_free(drv->nl_cache_event);
1288 nl_handle_destroy(drv->nl_handle);
1289 nl_handle_destroy(drv->nl_handle_event);
1290 nl_cb_put(drv->nl_cb);
1291
1292 os_free(drv);
1293 }
1294
1295
1296 /**
1297 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1298 * @eloop_ctx: Driver private data
1299 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1300 *
1301 * This function can be used as registered timeout when starting a scan to
1302 * generate a scan completed event if the driver does not report this.
1303 */
1304 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1305 {
1306 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1307 if (drv->ap_scan_as_station) {
1308 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1309 drv->ap_scan_as_station = 0;
1310 }
1311 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1312 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1313 }
1314
1315
1316 /**
1317 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1318 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1319 * @params: Scan parameters
1320 * Returns: 0 on success, -1 on failure
1321 */
1322 static int wpa_driver_nl80211_scan(void *priv,
1323 struct wpa_driver_scan_params *params)
1324 {
1325 struct wpa_driver_nl80211_data *drv = priv;
1326 int ret = 0, timeout;
1327 struct nl_msg *msg, *ssids, *freqs;
1328 size_t i;
1329
1330 msg = nlmsg_alloc();
1331 ssids = nlmsg_alloc();
1332 freqs = nlmsg_alloc();
1333 if (!msg || !ssids || !freqs) {
1334 nlmsg_free(msg);
1335 nlmsg_free(ssids);
1336 nlmsg_free(freqs);
1337 return -1;
1338 }
1339
1340 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1341 NL80211_CMD_TRIGGER_SCAN, 0);
1342
1343 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1344
1345 for (i = 0; i < params->num_ssids; i++) {
1346 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1347 params->ssids[i].ssid);
1348 }
1349 if (params->num_ssids)
1350 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1351
1352 if (params->extra_ies) {
1353 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1354 params->extra_ies);
1355 }
1356
1357 if (params->freqs) {
1358 for (i = 0; params->freqs[i]; i++)
1359 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1360 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1361 }
1362
1363 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1364 msg = NULL;
1365 if (ret) {
1366 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1367 "(%s)", ret, strerror(-ret));
1368 #ifdef HOSTAPD
1369 if (drv->nlmode == NL80211_IFTYPE_AP) {
1370 /*
1371 * mac80211 does not allow scan requests in AP mode, so
1372 * try to do this in station mode.
1373 */
1374 if (wpa_driver_nl80211_set_mode(drv,
1375 IEEE80211_MODE_INFRA))
1376 goto nla_put_failure;
1377
1378 if (wpa_driver_nl80211_scan(drv, params)) {
1379 wpa_driver_nl80211_set_mode(drv,
1380 IEEE80211_MODE_AP);
1381 goto nla_put_failure;
1382 }
1383
1384 /* Restore AP mode when processing scan results */
1385 drv->ap_scan_as_station = 1;
1386 ret = 0;
1387 } else
1388 goto nla_put_failure;
1389 #else /* HOSTAPD */
1390 goto nla_put_failure;
1391 #endif /* HOSTAPD */
1392 }
1393
1394 /* Not all drivers generate "scan completed" wireless event, so try to
1395 * read results after a timeout. */
1396 timeout = 10;
1397 if (drv->scan_complete_events) {
1398 /*
1399 * The driver seems to deliver events to notify when scan is
1400 * complete, so use longer timeout to avoid race conditions
1401 * with scanning and following association request.
1402 */
1403 timeout = 30;
1404 }
1405 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1406 "seconds", ret, timeout);
1407 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1408 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1409 drv, drv->ctx);
1410
1411 nla_put_failure:
1412 nlmsg_free(ssids);
1413 nlmsg_free(msg);
1414 nlmsg_free(freqs);
1415 return ret;
1416 }
1417
1418
1419 static int bss_info_handler(struct nl_msg *msg, void *arg)
1420 {
1421 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1422 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1423 struct nlattr *bss[NL80211_BSS_MAX + 1];
1424 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1425 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1426 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1427 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1428 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1429 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1430 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1431 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1432 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1433 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1434 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1435 };
1436 struct wpa_scan_results *res = arg;
1437 struct wpa_scan_res **tmp;
1438 struct wpa_scan_res *r;
1439 const u8 *ie;
1440 size_t ie_len;
1441
1442 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1443 genlmsg_attrlen(gnlh, 0), NULL);
1444 if (!tb[NL80211_ATTR_BSS])
1445 return NL_SKIP;
1446 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1447 bss_policy))
1448 return NL_SKIP;
1449 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1450 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1451 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1452 } else {
1453 ie = NULL;
1454 ie_len = 0;
1455 }
1456
1457 r = os_zalloc(sizeof(*r) + ie_len);
1458 if (r == NULL)
1459 return NL_SKIP;
1460 if (bss[NL80211_BSS_BSSID])
1461 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1462 ETH_ALEN);
1463 if (bss[NL80211_BSS_FREQUENCY])
1464 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1465 if (bss[NL80211_BSS_BEACON_INTERVAL])
1466 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1467 if (bss[NL80211_BSS_CAPABILITY])
1468 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1469 r->flags |= WPA_SCAN_NOISE_INVALID;
1470 if (bss[NL80211_BSS_SIGNAL_MBM]) {
1471 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1472 r->level /= 100; /* mBm to dBm */
1473 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1474 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1475 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1476 r->flags |= WPA_SCAN_LEVEL_INVALID;
1477 } else
1478 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1479 if (bss[NL80211_BSS_TSF])
1480 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1481 if (bss[NL80211_BSS_SEEN_MS_AGO])
1482 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1483 r->ie_len = ie_len;
1484 if (ie)
1485 os_memcpy(r + 1, ie, ie_len);
1486
1487 if (bss[NL80211_BSS_STATUS]) {
1488 enum nl80211_bss_status status;
1489 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1490 switch (status) {
1491 case NL80211_BSS_STATUS_AUTHENTICATED:
1492 r->flags |= WPA_SCAN_AUTHENTICATED;
1493 break;
1494 case NL80211_BSS_STATUS_ASSOCIATED:
1495 r->flags |= WPA_SCAN_ASSOCIATED;
1496 break;
1497 default:
1498 break;
1499 }
1500 }
1501
1502 tmp = os_realloc(res->res,
1503 (res->num + 1) * sizeof(struct wpa_scan_res *));
1504 if (tmp == NULL) {
1505 os_free(r);
1506 return NL_SKIP;
1507 }
1508 tmp[res->num++] = r;
1509 res->res = tmp;
1510
1511 return NL_SKIP;
1512 }
1513
1514
1515 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1516 const u8 *addr)
1517 {
1518 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1519 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1520 "mismatch");
1521 wpa_driver_nl80211_mlme(drv, addr,
1522 NL80211_CMD_DEAUTHENTICATE,
1523 WLAN_REASON_PREV_AUTH_NOT_VALID);
1524 }
1525 }
1526
1527
1528 static void wpa_driver_nl80211_check_bss_status(
1529 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1530 {
1531 size_t i;
1532
1533 for (i = 0; i < res->num; i++) {
1534 struct wpa_scan_res *r = res->res[i];
1535 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1536 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1537 "indicates BSS status with " MACSTR
1538 " as authenticated",
1539 MAC2STR(r->bssid));
1540 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1541 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1542 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1543 0) {
1544 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1545 " in local state (auth=" MACSTR
1546 " assoc=" MACSTR ")",
1547 MAC2STR(drv->auth_bssid),
1548 MAC2STR(drv->bssid));
1549 }
1550 }
1551
1552 if (r->flags & WPA_SCAN_ASSOCIATED) {
1553 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1554 "indicate BSS status with " MACSTR
1555 " as associated",
1556 MAC2STR(r->bssid));
1557 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1558 !drv->associated) {
1559 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1560 "(not associated) does not match "
1561 "with BSS state");
1562 clear_state_mismatch(drv, r->bssid);
1563 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1564 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1565 0) {
1566 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1567 "(associated with " MACSTR ") does "
1568 "not match with BSS state",
1569 MAC2STR(drv->bssid));
1570 clear_state_mismatch(drv, r->bssid);
1571 clear_state_mismatch(drv, drv->bssid);
1572 }
1573 }
1574 }
1575 }
1576
1577
1578 /**
1579 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1580 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1581 * Returns: Scan results on success, -1 on failure
1582 */
1583 static struct wpa_scan_results *
1584 wpa_driver_nl80211_get_scan_results(void *priv)
1585 {
1586 struct wpa_driver_nl80211_data *drv = priv;
1587 struct nl_msg *msg;
1588 struct wpa_scan_results *res;
1589 int ret;
1590
1591 res = os_zalloc(sizeof(*res));
1592 if (res == NULL)
1593 return NULL;
1594 msg = nlmsg_alloc();
1595 if (!msg)
1596 goto nla_put_failure;
1597
1598 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1599 NL80211_CMD_GET_SCAN, 0);
1600 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1601
1602 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1603 msg = NULL;
1604 if (ret == 0) {
1605 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1606 (unsigned long) res->num);
1607 wpa_driver_nl80211_check_bss_status(drv, res);
1608 return res;
1609 }
1610 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1611 "(%s)", ret, strerror(-ret));
1612 nla_put_failure:
1613 nlmsg_free(msg);
1614 wpa_scan_results_free(res);
1615 return NULL;
1616 }
1617
1618
1619 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1620 wpa_alg alg, const u8 *addr, int key_idx,
1621 int set_tx,
1622 const u8 *seq, size_t seq_len,
1623 const u8 *key, size_t key_len)
1624 {
1625 struct wpa_driver_nl80211_data *drv = priv;
1626 int ifindex = if_nametoindex(ifname);
1627 struct nl_msg *msg;
1628 int ret;
1629
1630 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1631 "set_tx=%d seq_len=%lu key_len=%lu",
1632 __func__, ifindex, alg, addr, key_idx, set_tx,
1633 (unsigned long) seq_len, (unsigned long) key_len);
1634
1635 msg = nlmsg_alloc();
1636 if (!msg)
1637 return -ENOMEM;
1638
1639 if (alg == WPA_ALG_NONE) {
1640 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1641 0, NL80211_CMD_DEL_KEY, 0);
1642 } else {
1643 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1644 0, NL80211_CMD_NEW_KEY, 0);
1645 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1646 switch (alg) {
1647 case WPA_ALG_WEP:
1648 if (key_len == 5)
1649 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1650 WLAN_CIPHER_SUITE_WEP40);
1651 else
1652 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1653 WLAN_CIPHER_SUITE_WEP104);
1654 break;
1655 case WPA_ALG_TKIP:
1656 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1657 WLAN_CIPHER_SUITE_TKIP);
1658 break;
1659 case WPA_ALG_CCMP:
1660 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1661 WLAN_CIPHER_SUITE_CCMP);
1662 break;
1663 case WPA_ALG_IGTK:
1664 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1665 WLAN_CIPHER_SUITE_AES_CMAC);
1666 break;
1667 default:
1668 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1669 "algorithm %d", __func__, alg);
1670 nlmsg_free(msg);
1671 return -1;
1672 }
1673 }
1674
1675 if (seq && seq_len)
1676 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1677
1678 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1679 {
1680 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1681 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1682 }
1683 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1684 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1685
1686 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1687 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1688 ret = 0;
1689 if (ret)
1690 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1691 ret, strerror(-ret));
1692
1693 /*
1694 * If we failed or don't need to set the default TX key (below),
1695 * we're done here.
1696 */
1697 if (ret || !set_tx || alg == WPA_ALG_NONE)
1698 return ret;
1699 #ifdef HOSTAPD /* FIX: is this needed? */
1700 if (addr)
1701 return ret;
1702 #endif /* HOSTAPD */
1703
1704 msg = nlmsg_alloc();
1705 if (!msg)
1706 return -ENOMEM;
1707
1708 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1709 0, NL80211_CMD_SET_KEY, 0);
1710 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1711 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1712 if (alg == WPA_ALG_IGTK)
1713 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1714 else
1715 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1716
1717 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1718 if (ret == -ENOENT)
1719 ret = 0;
1720 if (ret)
1721 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1722 "err=%d %s)", ret, strerror(-ret));
1723 return ret;
1724
1725 nla_put_failure:
1726 return -ENOBUFS;
1727 }
1728
1729
1730 static int nl_add_key(struct nl_msg *msg, wpa_alg alg,
1731 int key_idx, int defkey,
1732 const u8 *seq, size_t seq_len,
1733 const u8 *key, size_t key_len)
1734 {
1735 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1736 if (!key_attr)
1737 return -1;
1738
1739 if (defkey && alg == WPA_ALG_IGTK)
1740 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1741 else if (defkey)
1742 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1743
1744 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1745
1746 switch (alg) {
1747 case WPA_ALG_WEP:
1748 if (key_len == 5)
1749 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1750 WLAN_CIPHER_SUITE_WEP40);
1751 else
1752 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1753 WLAN_CIPHER_SUITE_WEP104);
1754 break;
1755 case WPA_ALG_TKIP:
1756 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1757 break;
1758 case WPA_ALG_CCMP:
1759 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1760 break;
1761 case WPA_ALG_IGTK:
1762 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1763 WLAN_CIPHER_SUITE_AES_CMAC);
1764 break;
1765 default:
1766 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1767 "algorithm %d", __func__, alg);
1768 return -1;
1769 }
1770
1771 if (seq && seq_len)
1772 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1773
1774 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1775
1776 nla_nest_end(msg, key_attr);
1777
1778 return 0;
1779 nla_put_failure:
1780 return -1;
1781 }
1782
1783
1784 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1785 struct nl_msg *msg)
1786 {
1787 int i, privacy = 0;
1788 struct nlattr *nl_keys, *nl_key;
1789
1790 for (i = 0; i < 4; i++) {
1791 if (!params->wep_key[i])
1792 continue;
1793 privacy = 1;
1794 break;
1795 }
1796 if (!privacy)
1797 return 0;
1798
1799 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1800
1801 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1802 if (!nl_keys)
1803 goto nla_put_failure;
1804
1805 for (i = 0; i < 4; i++) {
1806 if (!params->wep_key[i])
1807 continue;
1808
1809 nl_key = nla_nest_start(msg, i);
1810 if (!nl_key)
1811 goto nla_put_failure;
1812
1813 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1814 params->wep_key[i]);
1815 if (params->wep_key_len[i] == 5)
1816 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1817 WLAN_CIPHER_SUITE_WEP40);
1818 else
1819 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1820 WLAN_CIPHER_SUITE_WEP104);
1821
1822 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1823
1824 if (i == params->wep_tx_keyidx)
1825 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1826
1827 nla_nest_end(msg, nl_key);
1828 }
1829 nla_nest_end(msg, nl_keys);
1830
1831 return 0;
1832
1833 nla_put_failure:
1834 return -ENOBUFS;
1835 }
1836
1837
1838 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1839 const u8 *addr, int cmd, u16 reason_code)
1840 {
1841 int ret = -1;
1842 struct nl_msg *msg;
1843
1844 msg = nlmsg_alloc();
1845 if (!msg)
1846 return -1;
1847
1848 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1849
1850 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1851 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1852 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1853
1854 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1855 msg = NULL;
1856 if (ret) {
1857 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1858 "(%s)", ret, strerror(-ret));
1859 goto nla_put_failure;
1860 }
1861 ret = 0;
1862
1863 nla_put_failure:
1864 nlmsg_free(msg);
1865 return ret;
1866 }
1867
1868
1869 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1870 const u8 *addr, int reason_code)
1871 {
1872 wpa_printf(MSG_DEBUG, "%s", __func__);
1873 drv->associated = 0;
1874 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1875 reason_code);
1876 }
1877
1878
1879 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1880 int reason_code)
1881 {
1882 struct wpa_driver_nl80211_data *drv = priv;
1883 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1884 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1885 wpa_printf(MSG_DEBUG, "%s", __func__);
1886 drv->associated = 0;
1887 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1888 reason_code);
1889 }
1890
1891
1892 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
1893 int reason_code)
1894 {
1895 struct wpa_driver_nl80211_data *drv = priv;
1896 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1897 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1898 wpa_printf(MSG_DEBUG, "%s", __func__);
1899 drv->associated = 0;
1900 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
1901 reason_code);
1902 }
1903
1904
1905 static int wpa_driver_nl80211_authenticate(
1906 void *priv, struct wpa_driver_auth_params *params)
1907 {
1908 struct wpa_driver_nl80211_data *drv = priv;
1909 int ret = -1, i;
1910 struct nl_msg *msg;
1911 enum nl80211_auth_type type;
1912 int count = 0;
1913
1914 drv->associated = 0;
1915 os_memset(drv->auth_bssid, 0, ETH_ALEN);
1916
1917 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
1918 return -1;
1919
1920 retry:
1921 msg = nlmsg_alloc();
1922 if (!msg)
1923 return -1;
1924
1925 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
1926 drv->ifindex);
1927
1928 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1929 NL80211_CMD_AUTHENTICATE, 0);
1930
1931 for (i = 0; i < 4; i++) {
1932 if (!params->wep_key[i])
1933 continue;
1934 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
1935 i,
1936 i == params->wep_tx_keyidx, NULL, 0,
1937 params->wep_key[i],
1938 params->wep_key_len[i]);
1939 if (params->wep_tx_keyidx != i)
1940 continue;
1941 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
1942 params->wep_key[i], params->wep_key_len[i])) {
1943 nlmsg_free(msg);
1944 return -1;
1945 }
1946 }
1947
1948 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1949 if (params->bssid) {
1950 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
1951 MAC2STR(params->bssid));
1952 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
1953 }
1954 if (params->freq) {
1955 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
1956 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
1957 }
1958 if (params->ssid) {
1959 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
1960 params->ssid, params->ssid_len);
1961 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
1962 params->ssid);
1963 }
1964 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
1965 if (params->ie)
1966 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
1967 /*
1968 * TODO: if multiple auth_alg options enabled, try them one by one if
1969 * the AP rejects authentication due to unknown auth alg
1970 */
1971 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
1972 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1973 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
1974 type = NL80211_AUTHTYPE_SHARED_KEY;
1975 else if (params->auth_alg & AUTH_ALG_LEAP)
1976 type = NL80211_AUTHTYPE_NETWORK_EAP;
1977 else if (params->auth_alg & AUTH_ALG_FT)
1978 type = NL80211_AUTHTYPE_FT;
1979 else
1980 goto nla_put_failure;
1981 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
1982 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
1983
1984 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1985 msg = NULL;
1986 if (ret) {
1987 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1988 "(%s)", ret, strerror(-ret));
1989 count++;
1990 if (ret == -EALREADY && count == 1 && params->bssid) {
1991 /*
1992 * mac80211 does not currently accept new
1993 * authentication if we are already authenticated. As a
1994 * workaround, force deauthentication and try again.
1995 */
1996 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
1997 "after forced deauthentication");
1998 wpa_driver_nl80211_deauthenticate(
1999 drv, params->bssid,
2000 WLAN_REASON_PREV_AUTH_NOT_VALID);
2001 nlmsg_free(msg);
2002 goto retry;
2003 }
2004 goto nla_put_failure;
2005 }
2006 ret = 0;
2007 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2008 "successfully");
2009
2010 nla_put_failure:
2011 nlmsg_free(msg);
2012 return ret;
2013 }
2014
2015
2016 struct phy_info_arg {
2017 u16 *num_modes;
2018 struct hostapd_hw_modes *modes;
2019 };
2020
2021 static int phy_info_handler(struct nl_msg *msg, void *arg)
2022 {
2023 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2024 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2025 struct phy_info_arg *phy_info = arg;
2026
2027 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2028
2029 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2030 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2031 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2032 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2033 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2034 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2035 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2036 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2037 };
2038
2039 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2040 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2041 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2042 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2043 };
2044
2045 struct nlattr *nl_band;
2046 struct nlattr *nl_freq;
2047 struct nlattr *nl_rate;
2048 int rem_band, rem_freq, rem_rate;
2049 struct hostapd_hw_modes *mode;
2050 int idx, mode_is_set;
2051
2052 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2053 genlmsg_attrlen(gnlh, 0), NULL);
2054
2055 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2056 return NL_SKIP;
2057
2058 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2059 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2060 if (!mode)
2061 return NL_SKIP;
2062 phy_info->modes = mode;
2063
2064 mode_is_set = 0;
2065
2066 mode = &phy_info->modes[*(phy_info->num_modes)];
2067 memset(mode, 0, sizeof(*mode));
2068 *(phy_info->num_modes) += 1;
2069
2070 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2071 nla_len(nl_band), NULL);
2072
2073 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2074 mode->ht_capab = nla_get_u16(
2075 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2076 }
2077
2078 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2079 mode->a_mpdu_params |= nla_get_u8(
2080 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2081 0x03;
2082 }
2083
2084 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2085 mode->a_mpdu_params |= nla_get_u8(
2086 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2087 2;
2088 }
2089
2090 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2091 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2092 u8 *mcs;
2093 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2094 os_memcpy(mode->mcs_set, mcs, 16);
2095 }
2096
2097 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2098 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2099 nla_len(nl_freq), freq_policy);
2100 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2101 continue;
2102 mode->num_channels++;
2103 }
2104
2105 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2106 if (!mode->channels)
2107 return NL_SKIP;
2108
2109 idx = 0;
2110
2111 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2112 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2113 nla_len(nl_freq), freq_policy);
2114 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2115 continue;
2116
2117 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2118 mode->channels[idx].flag = 0;
2119
2120 if (!mode_is_set) {
2121 /* crude heuristic */
2122 if (mode->channels[idx].freq < 4000)
2123 mode->mode = HOSTAPD_MODE_IEEE80211B;
2124 else
2125 mode->mode = HOSTAPD_MODE_IEEE80211A;
2126 mode_is_set = 1;
2127 }
2128
2129 /* crude heuristic */
2130 if (mode->channels[idx].freq < 4000)
2131 if (mode->channels[idx].freq == 2484)
2132 mode->channels[idx].chan = 14;
2133 else
2134 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2135 else
2136 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2137
2138 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2139 mode->channels[idx].flag |=
2140 HOSTAPD_CHAN_DISABLED;
2141 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2142 mode->channels[idx].flag |=
2143 HOSTAPD_CHAN_PASSIVE_SCAN;
2144 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2145 mode->channels[idx].flag |=
2146 HOSTAPD_CHAN_NO_IBSS;
2147 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2148 mode->channels[idx].flag |=
2149 HOSTAPD_CHAN_RADAR;
2150
2151 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2152 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2153 mode->channels[idx].max_tx_power =
2154 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2155
2156 idx++;
2157 }
2158
2159 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2160 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2161 nla_len(nl_rate), rate_policy);
2162 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2163 continue;
2164 mode->num_rates++;
2165 }
2166
2167 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2168 if (!mode->rates)
2169 return NL_SKIP;
2170
2171 idx = 0;
2172
2173 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2174 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2175 nla_len(nl_rate), rate_policy);
2176 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2177 continue;
2178 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2179
2180 /* crude heuristic */
2181 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2182 mode->rates[idx] > 200)
2183 mode->mode = HOSTAPD_MODE_IEEE80211G;
2184
2185 idx++;
2186 }
2187 }
2188
2189 return NL_SKIP;
2190 }
2191
2192 static struct hostapd_hw_modes *
2193 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2194 {
2195 u16 m;
2196 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2197 int i, mode11g_idx = -1;
2198
2199 /* If only 802.11g mode is included, use it to construct matching
2200 * 802.11b mode data. */
2201
2202 for (m = 0; m < *num_modes; m++) {
2203 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2204 return modes; /* 802.11b already included */
2205 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2206 mode11g_idx = m;
2207 }
2208
2209 if (mode11g_idx < 0)
2210 return modes; /* 2.4 GHz band not supported at all */
2211
2212 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2213 if (nmodes == NULL)
2214 return modes; /* Could not add 802.11b mode */
2215
2216 mode = &nmodes[*num_modes];
2217 os_memset(mode, 0, sizeof(*mode));
2218 (*num_modes)++;
2219 modes = nmodes;
2220
2221 mode->mode = HOSTAPD_MODE_IEEE80211B;
2222
2223 mode11g = &modes[mode11g_idx];
2224 mode->num_channels = mode11g->num_channels;
2225 mode->channels = os_malloc(mode11g->num_channels *
2226 sizeof(struct hostapd_channel_data));
2227 if (mode->channels == NULL) {
2228 (*num_modes)--;
2229 return modes; /* Could not add 802.11b mode */
2230 }
2231 os_memcpy(mode->channels, mode11g->channels,
2232 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2233
2234 mode->num_rates = 0;
2235 mode->rates = os_malloc(4 * sizeof(int));
2236 if (mode->rates == NULL) {
2237 os_free(mode->channels);
2238 (*num_modes)--;
2239 return modes; /* Could not add 802.11b mode */
2240 }
2241
2242 for (i = 0; i < mode11g->num_rates; i++) {
2243 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2244 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2245 continue;
2246 mode->rates[mode->num_rates] = mode11g->rates[i];
2247 mode->num_rates++;
2248 if (mode->num_rates == 4)
2249 break;
2250 }
2251
2252 if (mode->num_rates == 0) {
2253 os_free(mode->channels);
2254 os_free(mode->rates);
2255 (*num_modes)--;
2256 return modes; /* No 802.11b rates */
2257 }
2258
2259 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2260 "information");
2261
2262 return modes;
2263 }
2264
2265
2266 static struct hostapd_hw_modes *
2267 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2268 {
2269 struct wpa_driver_nl80211_data *drv = priv;
2270 struct nl_msg *msg;
2271 struct phy_info_arg result = {
2272 .num_modes = num_modes,
2273 .modes = NULL,
2274 };
2275
2276 *num_modes = 0;
2277 *flags = 0;
2278
2279 msg = nlmsg_alloc();
2280 if (!msg)
2281 return NULL;
2282
2283 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2284 0, NL80211_CMD_GET_WIPHY, 0);
2285
2286 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2287
2288 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2289 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2290 nla_put_failure:
2291 return NULL;
2292 }
2293
2294
2295 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2296 const void *data, size_t len,
2297 int encrypt)
2298 {
2299 __u8 rtap_hdr[] = {
2300 0x00, 0x00, /* radiotap version */
2301 0x0e, 0x00, /* radiotap length */
2302 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2303 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2304 0x00, /* padding */
2305 0x00, 0x00, /* RX and TX flags to indicate that */
2306 0x00, 0x00, /* this is the injected frame directly */
2307 };
2308 struct iovec iov[2] = {
2309 {
2310 .iov_base = &rtap_hdr,
2311 .iov_len = sizeof(rtap_hdr),
2312 },
2313 {
2314 .iov_base = (void *) data,
2315 .iov_len = len,
2316 }
2317 };
2318 struct msghdr msg = {
2319 .msg_name = NULL,
2320 .msg_namelen = 0,
2321 .msg_iov = iov,
2322 .msg_iovlen = 2,
2323 .msg_control = NULL,
2324 .msg_controllen = 0,
2325 .msg_flags = 0,
2326 };
2327
2328 if (encrypt)
2329 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2330
2331 return sendmsg(drv->monitor_sock, &msg, 0);
2332 }
2333
2334
2335 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2336 size_t data_len)
2337 {
2338 struct wpa_driver_nl80211_data *drv = priv;
2339 struct ieee80211_mgmt *mgmt;
2340 int encrypt = 1;
2341 u16 fc;
2342
2343 mgmt = (struct ieee80211_mgmt *) data;
2344 fc = le_to_host16(mgmt->frame_control);
2345
2346 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2347 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2348 /*
2349 * Only one of the authentication frame types is encrypted.
2350 * In order for static WEP encryption to work properly (i.e.,
2351 * to not encrypt the frame), we need to tell mac80211 about
2352 * the frames that must not be encrypted.
2353 */
2354 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2355 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2356 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2357 encrypt = 0;
2358 }
2359
2360 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2361 }
2362
2363
2364 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2365 const u8 *head, size_t head_len,
2366 const u8 *tail, size_t tail_len,
2367 int dtim_period, int beacon_int)
2368 {
2369 struct wpa_driver_nl80211_data *drv = priv;
2370 struct nl_msg *msg;
2371 u8 cmd = NL80211_CMD_NEW_BEACON;
2372 int ret;
2373 int beacon_set;
2374 int ifindex = if_nametoindex(ifname);
2375 #ifdef HOSTAPD
2376 struct i802_bss *bss;
2377
2378 bss = get_bss(drv, ifindex);
2379 if (bss == NULL)
2380 return -ENOENT;
2381 beacon_set = bss->beacon_set;
2382 #else /* HOSTAPD */
2383 beacon_set = drv->beacon_set;
2384 #endif /* HOSTAPD */
2385
2386 msg = nlmsg_alloc();
2387 if (!msg)
2388 return -ENOMEM;
2389
2390 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2391 beacon_set);
2392 if (beacon_set)
2393 cmd = NL80211_CMD_SET_BEACON;
2394
2395 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2396 0, cmd, 0);
2397 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2398 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2399 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2400 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2401 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2402
2403 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2404 if (ret) {
2405 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2406 ret, strerror(-ret));
2407 } else {
2408 #ifdef HOSTAPD
2409 bss->beacon_set = 1;
2410 #else /* HOSTAPD */
2411 drv->beacon_set = 1;
2412 #endif /* HOSTAPD */
2413 }
2414 return ret;
2415 nla_put_failure:
2416 return -ENOBUFS;
2417 }
2418
2419
2420 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2421 int freq, int ht_enabled,
2422 int sec_channel_offset)
2423 {
2424 struct nl_msg *msg;
2425 int ret;
2426
2427 msg = nlmsg_alloc();
2428 if (!msg)
2429 return -1;
2430
2431 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2432 NL80211_CMD_SET_WIPHY, 0);
2433
2434 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2435 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2436 if (ht_enabled) {
2437 switch (sec_channel_offset) {
2438 case -1:
2439 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2440 NL80211_CHAN_HT40MINUS);
2441 break;
2442 case 1:
2443 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2444 NL80211_CHAN_HT40PLUS);
2445 break;
2446 default:
2447 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2448 NL80211_CHAN_HT20);
2449 break;
2450 }
2451 }
2452
2453 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2454 if (ret == 0)
2455 return 0;
2456 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2457 "%d (%s)", freq, ret, strerror(-ret));
2458 nla_put_failure:
2459 return -1;
2460 }
2461
2462
2463 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2464 struct hostapd_sta_add_params *params)
2465 {
2466 struct wpa_driver_nl80211_data *drv = priv;
2467 struct nl_msg *msg;
2468 int ret = -ENOBUFS;
2469
2470 msg = nlmsg_alloc();
2471 if (!msg)
2472 return -ENOMEM;
2473
2474 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2475 0, NL80211_CMD_NEW_STATION, 0);
2476
2477 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2478 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2479 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2480 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2481 params->supp_rates);
2482 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2483 params->listen_interval);
2484 if (params->ht_capabilities) {
2485 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2486 sizeof(*params->ht_capabilities),
2487 params->ht_capabilities);
2488 }
2489
2490 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2491 if (ret)
2492 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2493 "result: %d (%s)", ret, strerror(-ret));
2494 if (ret == -EEXIST)
2495 ret = 0;
2496 nla_put_failure:
2497 return ret;
2498 }
2499
2500
2501 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2502 {
2503 struct wpa_driver_nl80211_data *drv = priv;
2504 struct nl_msg *msg;
2505 int ret;
2506
2507 msg = nlmsg_alloc();
2508 if (!msg)
2509 return -ENOMEM;
2510
2511 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2512 0, NL80211_CMD_DEL_STATION, 0);
2513
2514 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2515 if_nametoindex(drv->ifname));
2516 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2517
2518 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2519 if (ret == -ENOENT)
2520 return 0;
2521 return ret;
2522 nla_put_failure:
2523 return -ENOBUFS;
2524 }
2525
2526
2527 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2528 int ifidx)
2529 {
2530 struct nl_msg *msg;
2531
2532 #ifdef HOSTAPD
2533 /* stop listening for EAPOL on this interface */
2534 del_ifidx(drv, ifidx);
2535 #endif /* HOSTAPD */
2536
2537 msg = nlmsg_alloc();
2538 if (!msg)
2539 goto nla_put_failure;
2540
2541 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2542 0, NL80211_CMD_DEL_INTERFACE, 0);
2543 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2544
2545 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2546 return;
2547 nla_put_failure:
2548 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2549 ifidx);
2550 }
2551
2552
2553 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2554 const char *ifname,
2555 enum nl80211_iftype iftype,
2556 const u8 *addr)
2557 {
2558 struct nl_msg *msg, *flags = NULL;
2559 int ifidx;
2560 int ret = -ENOBUFS;
2561
2562 msg = nlmsg_alloc();
2563 if (!msg)
2564 return -1;
2565
2566 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2567 0, NL80211_CMD_NEW_INTERFACE, 0);
2568 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2569 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2570 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2571
2572 if (iftype == NL80211_IFTYPE_MONITOR) {
2573 int err;
2574
2575 flags = nlmsg_alloc();
2576 if (!flags)
2577 goto nla_put_failure;
2578
2579 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2580
2581 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2582
2583 nlmsg_free(flags);
2584
2585 if (err)
2586 goto nla_put_failure;
2587 }
2588
2589 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2590 if (ret) {
2591 nla_put_failure:
2592 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2593 ifname, ret, strerror(-ret));
2594 return ret;
2595 }
2596
2597 ifidx = if_nametoindex(ifname);
2598
2599 if (ifidx <= 0)
2600 return -1;
2601
2602 #ifdef HOSTAPD
2603 /* start listening for EAPOL on this interface */
2604 add_ifidx(drv, ifidx);
2605
2606 if (addr && iftype == NL80211_IFTYPE_AP &&
2607 set_ifhwaddr(drv, ifname, addr)) {
2608 nl80211_remove_iface(drv, ifidx);
2609 return -1;
2610 }
2611 #endif /* HOSTAPD */
2612
2613 return ifidx;
2614 }
2615
2616
2617 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2618 const char *ifname, enum nl80211_iftype iftype,
2619 const u8 *addr)
2620 {
2621 int ret;
2622
2623 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2624
2625 /* if error occured and interface exists already */
2626 if (ret == -ENFILE && if_nametoindex(ifname)) {
2627 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2628
2629 /* Try to remove the interface that was already there. */
2630 nl80211_remove_iface(drv, if_nametoindex(ifname));
2631
2632 /* Try to create the interface again */
2633 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2634 }
2635
2636 return ret;
2637 }
2638
2639
2640 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2641 {
2642 struct ieee80211_hdr *hdr;
2643 u16 fc;
2644 union wpa_event_data event;
2645
2646 hdr = (struct ieee80211_hdr *) buf;
2647 fc = le_to_host16(hdr->frame_control);
2648
2649 os_memset(&event, 0, sizeof(event));
2650 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2651 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2652 event.tx_status.dst = hdr->addr1;
2653 event.tx_status.data = buf;
2654 event.tx_status.data_len = len;
2655 event.tx_status.ack = ok;
2656 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
2657 }
2658
2659
2660 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2661 struct ieee80211_hdr *hdr, size_t len)
2662 {
2663 union wpa_event_data event;
2664 os_memset(&event, 0, sizeof(event));
2665 event.rx_from_unknown.hdr = hdr;
2666 event.rx_from_unknown.len = len;
2667 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2668 }
2669
2670
2671 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2672 u8 *buf, size_t len,
2673 struct hostapd_frame_info *hfi)
2674 {
2675 struct ieee80211_hdr *hdr;
2676 u16 fc;
2677 union wpa_event_data event;
2678
2679 hdr = (struct ieee80211_hdr *) buf;
2680 fc = le_to_host16(hdr->frame_control);
2681
2682 switch (WLAN_FC_GET_TYPE(fc)) {
2683 case WLAN_FC_TYPE_MGMT:
2684 os_memset(&event, 0, sizeof(event));
2685 event.rx_mgmt.frame = buf;
2686 event.rx_mgmt.frame_len = len;
2687 event.rx_mgmt.fi = hfi;
2688 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
2689 break;
2690 case WLAN_FC_TYPE_CTRL:
2691 /* can only get here with PS-Poll frames */
2692 wpa_printf(MSG_DEBUG, "CTRL");
2693 from_unknown_sta(drv, hdr, len);
2694 break;
2695 case WLAN_FC_TYPE_DATA:
2696 from_unknown_sta(drv, hdr, len);
2697 break;
2698 }
2699 }
2700
2701
2702 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2703 {
2704 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2705 int len;
2706 unsigned char buf[3000];
2707 struct ieee80211_radiotap_iterator iter;
2708 int ret;
2709 struct hostapd_frame_info hfi;
2710 int injected = 0, failed = 0, rxflags = 0;
2711
2712 len = recv(sock, buf, sizeof(buf), 0);
2713 if (len < 0) {
2714 perror("recv");
2715 return;
2716 }
2717
2718 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2719 printf("received invalid radiotap frame\n");
2720 return;
2721 }
2722
2723 memset(&hfi, 0, sizeof(hfi));
2724
2725 while (1) {
2726 ret = ieee80211_radiotap_iterator_next(&iter);
2727 if (ret == -ENOENT)
2728 break;
2729 if (ret) {
2730 printf("received invalid radiotap frame (%d)\n", ret);
2731 return;
2732 }
2733 switch (iter.this_arg_index) {
2734 case IEEE80211_RADIOTAP_FLAGS:
2735 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2736 len -= 4;
2737 break;
2738 case IEEE80211_RADIOTAP_RX_FLAGS:
2739 rxflags = 1;
2740 break;
2741 case IEEE80211_RADIOTAP_TX_FLAGS:
2742 injected = 1;
2743 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2744 IEEE80211_RADIOTAP_F_TX_FAIL;
2745 break;
2746 case IEEE80211_RADIOTAP_DATA_RETRIES:
2747 break;
2748 case IEEE80211_RADIOTAP_CHANNEL:
2749 /* TODO convert from freq/flags to channel number
2750 hfi.channel = XXX;
2751 */
2752 break;
2753 case IEEE80211_RADIOTAP_RATE:
2754 hfi.datarate = *iter.this_arg * 5;
2755 break;
2756 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2757 hfi.ssi_signal = *iter.this_arg;
2758 break;
2759 }
2760 }
2761
2762 if (rxflags && injected)
2763 return;
2764
2765 if (!injected)
2766 handle_frame(drv, buf + iter.max_length,
2767 len - iter.max_length, &hfi);
2768 else
2769 handle_tx_callback(drv->ctx, buf + iter.max_length,
2770 len - iter.max_length, !failed);
2771 }
2772
2773
2774 /*
2775 * we post-process the filter code later and rewrite
2776 * this to the offset to the last instruction
2777 */
2778 #define PASS 0xFF
2779 #define FAIL 0xFE
2780
2781 static struct sock_filter msock_filter_insns[] = {
2782 /*
2783 * do a little-endian load of the radiotap length field
2784 */
2785 /* load lower byte into A */
2786 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2787 /* put it into X (== index register) */
2788 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2789 /* load upper byte into A */
2790 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2791 /* left-shift it by 8 */
2792 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2793 /* or with X */
2794 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2795 /* put result into X */
2796 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2797
2798 /*
2799 * Allow management frames through, this also gives us those
2800 * management frames that we sent ourselves with status
2801 */
2802 /* load the lower byte of the IEEE 802.11 frame control field */
2803 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2804 /* mask off frame type and version */
2805 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2806 /* accept frame if it's both 0, fall through otherwise */
2807 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2808
2809 /*
2810 * TODO: add a bit to radiotap RX flags that indicates
2811 * that the sending station is not associated, then
2812 * add a filter here that filters on our DA and that flag
2813 * to allow us to deauth frames to that bad station.
2814 *
2815 * Not a regression -- we didn't do it before either.
2816 */
2817
2818 #if 0
2819 /*
2820 * drop non-data frames, WDS frames
2821 */
2822 /* load the lower byte of the frame control field */
2823 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2824 /* mask off QoS bit */
2825 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2826 /* drop non-data frames */
2827 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2828 /* load the upper byte of the frame control field */
2829 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2830 /* mask off toDS/fromDS */
2831 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2832 /* drop WDS frames */
2833 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2834 #endif
2835
2836 /*
2837 * add header length to index
2838 */
2839 /* load the lower byte of the frame control field */
2840 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2841 /* mask off QoS bit */
2842 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2843 /* right shift it by 6 to give 0 or 2 */
2844 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2845 /* add data frame header length */
2846 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2847 /* add index, was start of 802.11 header */
2848 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2849 /* move to index, now start of LL header */
2850 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2851
2852 /*
2853 * Accept empty data frames, we use those for
2854 * polling activity.
2855 */
2856 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2857 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2858
2859 /*
2860 * Accept EAPOL frames
2861 */
2862 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2863 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2864 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2865 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2866
2867 /* keep these last two statements or change the code below */
2868 /* return 0 == "DROP" */
2869 BPF_STMT(BPF_RET | BPF_K, 0),
2870 /* return ~0 == "keep all" */
2871 BPF_STMT(BPF_RET | BPF_K, ~0),
2872 };
2873
2874 static struct sock_fprog msock_filter = {
2875 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2876 .filter = msock_filter_insns,
2877 };
2878
2879
2880 static int add_monitor_filter(int s)
2881 {
2882 int idx;
2883
2884 /* rewrite all PASS/FAIL jump offsets */
2885 for (idx = 0; idx < msock_filter.len; idx++) {
2886 struct sock_filter *insn = &msock_filter_insns[idx];
2887
2888 if (BPF_CLASS(insn->code) == BPF_JMP) {
2889 if (insn->code == (BPF_JMP|BPF_JA)) {
2890 if (insn->k == PASS)
2891 insn->k = msock_filter.len - idx - 2;
2892 else if (insn->k == FAIL)
2893 insn->k = msock_filter.len - idx - 3;
2894 }
2895
2896 if (insn->jt == PASS)
2897 insn->jt = msock_filter.len - idx - 2;
2898 else if (insn->jt == FAIL)
2899 insn->jt = msock_filter.len - idx - 3;
2900
2901 if (insn->jf == PASS)
2902 insn->jf = msock_filter.len - idx - 2;
2903 else if (insn->jf == FAIL)
2904 insn->jf = msock_filter.len - idx - 3;
2905 }
2906 }
2907
2908 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2909 &msock_filter, sizeof(msock_filter))) {
2910 perror("SO_ATTACH_FILTER");
2911 return -1;
2912 }
2913
2914 return 0;
2915 }
2916
2917
2918 static void nl80211_remove_monitor_interface(
2919 struct wpa_driver_nl80211_data *drv)
2920 {
2921 if (drv->monitor_ifidx >= 0) {
2922 nl80211_remove_iface(drv, drv->monitor_ifidx);
2923 drv->monitor_ifidx = -1;
2924 }
2925 }
2926
2927
2928 static int
2929 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
2930 {
2931 char buf[IFNAMSIZ];
2932 struct sockaddr_ll ll;
2933 int optval;
2934 socklen_t optlen;
2935
2936 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
2937 buf[IFNAMSIZ - 1] = '\0';
2938
2939 drv->monitor_ifidx =
2940 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2941
2942 if (drv->monitor_ifidx < 0)
2943 return -1;
2944
2945 if (hostapd_set_iface_flags(drv, buf, 1))
2946 goto error;
2947
2948 memset(&ll, 0, sizeof(ll));
2949 ll.sll_family = AF_PACKET;
2950 ll.sll_ifindex = drv->monitor_ifidx;
2951 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2952 if (drv->monitor_sock < 0) {
2953 perror("socket[PF_PACKET,SOCK_RAW]");
2954 goto error;
2955 }
2956
2957 if (add_monitor_filter(drv->monitor_sock)) {
2958 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2959 "interface; do filtering in user space");
2960 /* This works, but will cost in performance. */
2961 }
2962
2963 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
2964 perror("monitor socket bind");
2965 goto error;
2966 }
2967
2968 optlen = sizeof(optval);
2969 optval = 20;
2970 if (setsockopt
2971 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2972 perror("Failed to set socket priority");
2973 goto error;
2974 }
2975
2976 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2977 drv, NULL)) {
2978 printf("Could not register monitor read socket\n");
2979 goto error;
2980 }
2981
2982 return 0;
2983 error:
2984 nl80211_remove_monitor_interface(drv);
2985 return -1;
2986 }
2987
2988
2989 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2990
2991 static int wpa_driver_nl80211_hapd_send_eapol(
2992 void *priv, const u8 *addr, const u8 *data,
2993 size_t data_len, int encrypt, const u8 *own_addr)
2994 {
2995 struct wpa_driver_nl80211_data *drv = priv;
2996 struct ieee80211_hdr *hdr;
2997 size_t len;
2998 u8 *pos;
2999 int res;
3000 #if 0 /* FIX */
3001 int qos = sta->flags & WPA_STA_WMM;
3002 #else
3003 int qos = 0;
3004 #endif
3005
3006 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3007 data_len;
3008 hdr = os_zalloc(len);
3009 if (hdr == NULL) {
3010 printf("malloc() failed for i802_send_data(len=%lu)\n",
3011 (unsigned long) len);
3012 return -1;
3013 }
3014
3015 hdr->frame_control =
3016 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3017 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3018 if (encrypt)
3019 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3020 #if 0 /* To be enabled if qos determination is added above */
3021 if (qos) {
3022 hdr->frame_control |=
3023 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3024 }
3025 #endif
3026
3027 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3028 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3029 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3030 pos = (u8 *) (hdr + 1);
3031
3032 #if 0 /* To be enabled if qos determination is added above */
3033 if (qos) {
3034 /* add an empty QoS header if needed */
3035 pos[0] = 0;
3036 pos[1] = 0;
3037 pos += 2;
3038 }
3039 #endif
3040
3041 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3042 pos += sizeof(rfc1042_header);
3043 WPA_PUT_BE16(pos, ETH_P_PAE);
3044 pos += 2;
3045 memcpy(pos, data, data_len);
3046
3047 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3048 if (res < 0) {
3049 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3050 "failed: %d (%s)",
3051 (unsigned long) len, errno, strerror(errno));
3052 }
3053 os_free(hdr);
3054
3055 return res;
3056 }
3057
3058
3059 static u32 sta_flags_nl80211(int flags)
3060 {
3061 u32 f = 0;
3062
3063 if (flags & WPA_STA_AUTHORIZED)
3064 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3065 if (flags & WPA_STA_WMM)
3066 f |= BIT(NL80211_STA_FLAG_WME);
3067 if (flags & WPA_STA_SHORT_PREAMBLE)
3068 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3069 if (flags & WPA_STA_MFP)
3070 f |= BIT(NL80211_STA_FLAG_MFP);
3071
3072 return f;
3073 }
3074
3075
3076 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3077 int total_flags, int flags_or,
3078 int flags_and)
3079 {
3080 struct wpa_driver_nl80211_data *drv = priv;
3081 struct nl_msg *msg, *flags = NULL;
3082 struct nl80211_sta_flag_update upd;
3083
3084 msg = nlmsg_alloc();
3085 if (!msg)
3086 return -ENOMEM;
3087
3088 flags = nlmsg_alloc();
3089 if (!flags) {
3090 nlmsg_free(msg);
3091 return -ENOMEM;
3092 }
3093
3094 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3095 0, NL80211_CMD_SET_STATION, 0);
3096
3097 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3098 if_nametoindex(drv->ifname));
3099 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3100
3101 /*
3102 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3103 * can be removed eventually.
3104 */
3105 if (total_flags & WPA_STA_AUTHORIZED)
3106 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3107
3108 if (total_flags & WPA_STA_WMM)
3109 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3110
3111 if (total_flags & WPA_STA_SHORT_PREAMBLE)
3112 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3113
3114 if (total_flags & WPA_STA_MFP)
3115 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3116
3117 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3118 goto nla_put_failure;
3119
3120 os_memset(&upd, 0, sizeof(upd));
3121 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3122 upd.set = sta_flags_nl80211(flags_or);
3123 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3124
3125 nlmsg_free(flags);
3126
3127 return send_and_recv_msgs(drv, msg, NULL, NULL);
3128 nla_put_failure:
3129 nlmsg_free(flags);
3130 return -ENOBUFS;
3131 }
3132
3133
3134 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3135 struct wpa_driver_associate_params *params)
3136 {
3137 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3138 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3139 nl80211_remove_monitor_interface(drv);
3140 return -1;
3141 }
3142
3143 /* TODO: setup monitor interface (and add code somewhere to remove this
3144 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3145
3146 return 0;
3147 }
3148
3149
3150 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3151 {
3152 struct nl_msg *msg;
3153 int ret = -1;
3154
3155 msg = nlmsg_alloc();
3156 if (!msg)
3157 return -1;
3158
3159 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3160 NL80211_CMD_LEAVE_IBSS, 0);
3161 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3162 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3163 msg = NULL;
3164 if (ret) {
3165 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3166 "(%s)", ret, strerror(-ret));
3167 goto nla_put_failure;
3168 }
3169
3170 ret = 0;
3171 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3172
3173 nla_put_failure:
3174 nlmsg_free(msg);
3175 return ret;
3176 }
3177
3178
3179 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3180 struct wpa_driver_associate_params *params)
3181 {
3182 struct nl_msg *msg;
3183 int ret = -1;
3184 int count = 0;
3185
3186 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3187
3188 if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3189 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3190 "IBSS mode");
3191 return -1;
3192 }
3193
3194 retry:
3195 msg = nlmsg_alloc();
3196 if (!msg)
3197 return -1;
3198
3199 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3200 NL80211_CMD_JOIN_IBSS, 0);
3201 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3202
3203 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3204 goto nla_put_failure;
3205
3206 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3207 params->ssid, params->ssid_len);
3208 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3209 params->ssid);
3210 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3211 drv->ssid_len = params->ssid_len;
3212
3213 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3214 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3215
3216 ret = nl80211_set_conn_keys(params, msg);
3217 if (ret)
3218 goto nla_put_failure;
3219
3220 if (params->wpa_ie) {
3221 wpa_hexdump(MSG_DEBUG,
3222 " * Extra IEs for Beacon/Probe Response frames",
3223 params->wpa_ie, params->wpa_ie_len);
3224 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3225 params->wpa_ie);
3226 }
3227
3228 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3229 msg = NULL;
3230 if (ret) {
3231 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3232 ret, strerror(-ret));
3233 count++;
3234 if (ret == -EALREADY && count == 1) {
3235 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3236 "forced leave");
3237 nl80211_leave_ibss(drv);
3238 nlmsg_free(msg);
3239 goto retry;
3240 }
3241
3242 goto nla_put_failure;
3243 }
3244 ret = 0;
3245 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3246
3247 nla_put_failure:
3248 nlmsg_free(msg);
3249 return ret;
3250 }
3251
3252
3253 static int wpa_driver_nl80211_connect(
3254 struct wpa_driver_nl80211_data *drv,
3255 struct wpa_driver_associate_params *params)
3256 {
3257 struct nl_msg *msg;
3258 enum nl80211_auth_type type;
3259 int ret = 0;
3260
3261 msg = nlmsg_alloc();
3262 if (!msg)
3263 return -1;
3264
3265 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3266 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3267 NL80211_CMD_CONNECT, 0);
3268
3269 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3270 if (params->bssid) {
3271 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3272 MAC2STR(params->bssid));
3273 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3274 }
3275 if (params->freq) {
3276 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3277 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3278 }
3279 if (params->ssid) {
3280 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3281 params->ssid, params->ssid_len);
3282 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3283 params->ssid);
3284 if (params->ssid_len > sizeof(drv->ssid))
3285 goto nla_put_failure;
3286 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3287 drv->ssid_len = params->ssid_len;
3288 }
3289 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3290 if (params->wpa_ie)
3291 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3292 params->wpa_ie);
3293
3294 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
3295 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3296 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
3297 type = NL80211_AUTHTYPE_SHARED_KEY;
3298 else if (params->auth_alg & AUTH_ALG_LEAP)
3299 type = NL80211_AUTHTYPE_NETWORK_EAP;
3300 else if (params->auth_alg & AUTH_ALG_FT)
3301 type = NL80211_AUTHTYPE_FT;
3302 else
3303 goto nla_put_failure;
3304
3305 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3306 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3307
3308 if (params->wpa_ie && params->wpa_ie_len) {
3309 enum nl80211_wpa_versions ver;
3310
3311 if (params->wpa_ie[0] == WLAN_EID_RSN)
3312 ver = NL80211_WPA_VERSION_2;
3313 else
3314 ver = NL80211_WPA_VERSION_1;
3315
3316 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3317 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3318 }
3319
3320 if (params->pairwise_suite != CIPHER_NONE) {
3321 int cipher;
3322
3323 switch (params->pairwise_suite) {
3324 case CIPHER_WEP40:
3325 cipher = WLAN_CIPHER_SUITE_WEP40;
3326 break;
3327 case CIPHER_WEP104:
3328 cipher = WLAN_CIPHER_SUITE_WEP104;
3329 break;
3330 case CIPHER_CCMP:
3331 cipher = WLAN_CIPHER_SUITE_CCMP;
3332 break;
3333 case CIPHER_TKIP:
3334 default:
3335 cipher = WLAN_CIPHER_SUITE_TKIP;
3336 break;
3337 }
3338 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3339 }
3340
3341 if (params->group_suite != CIPHER_NONE) {
3342 int cipher;
3343
3344 switch (params->group_suite) {
3345 case CIPHER_WEP40:
3346 cipher = WLAN_CIPHER_SUITE_WEP40;
3347 break;
3348 case CIPHER_WEP104:
3349 cipher = WLAN_CIPHER_SUITE_WEP104;
3350 break;
3351 case CIPHER_CCMP:
3352 cipher = WLAN_CIPHER_SUITE_CCMP;
3353 break;
3354 case CIPHER_TKIP:
3355 default:
3356 cipher = WLAN_CIPHER_SUITE_TKIP;
3357 break;
3358 }
3359 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3360 }
3361
3362 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3363 params->key_mgmt_suite == KEY_MGMT_PSK) {
3364 int mgmt = WLAN_AKM_SUITE_PSK;
3365
3366 switch (params->key_mgmt_suite) {
3367 case KEY_MGMT_802_1X:
3368 mgmt = WLAN_AKM_SUITE_8021X;
3369 break;
3370 case KEY_MGMT_PSK:
3371 default:
3372 mgmt = WLAN_AKM_SUITE_PSK;
3373 break;
3374 }
3375 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3376 }
3377
3378 ret = nl80211_set_conn_keys(params, msg);
3379 if (ret)
3380 goto nla_put_failure;
3381
3382 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3383 msg = NULL;
3384 if (ret) {
3385 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3386 "(%s)", ret, strerror(-ret));
3387 goto nla_put_failure;
3388 }
3389 ret = 0;
3390 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3391
3392 nla_put_failure:
3393 nlmsg_free(msg);
3394 return ret;
3395
3396 }
3397
3398
3399 static int wpa_driver_nl80211_associate(
3400 void *priv, struct wpa_driver_associate_params *params)
3401 {
3402 struct wpa_driver_nl80211_data *drv = priv;
3403 int ret = -1;
3404 struct nl_msg *msg;
3405
3406 if (params->mode == IEEE80211_MODE_AP)
3407 return wpa_driver_nl80211_ap(drv, params);
3408
3409 if (params->mode == IEEE80211_MODE_IBSS)
3410 return wpa_driver_nl80211_ibss(drv, params);
3411
3412 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3413 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3414 return -1;
3415 return wpa_driver_nl80211_connect(drv, params);
3416 }
3417
3418 drv->associated = 0;
3419
3420 msg = nlmsg_alloc();
3421 if (!msg)
3422 return -1;
3423
3424 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3425 drv->ifindex);
3426 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3427 NL80211_CMD_ASSOCIATE, 0);
3428
3429 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3430 if (params->bssid) {
3431 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3432 MAC2STR(params->bssid));
3433 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3434 }
3435 if (params->freq) {
3436 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3437 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3438 }
3439 if (params->ssid) {
3440 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3441 params->ssid, params->ssid_len);
3442 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3443 params->ssid);
3444 if (params->ssid_len > sizeof(drv->ssid))
3445 goto nla_put_failure;
3446 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3447 drv->ssid_len = params->ssid_len;
3448 }
3449 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3450 if (params->wpa_ie)
3451 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3452 params->wpa_ie);
3453
3454 #ifdef CONFIG_IEEE80211W
3455 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3456 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3457 #endif /* CONFIG_IEEE80211W */
3458
3459 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3460
3461 if (params->prev_bssid) {
3462 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3463 MAC2STR(params->prev_bssid));
3464 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3465 params->prev_bssid);
3466 }
3467
3468 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3469 msg = NULL;
3470 if (ret) {
3471 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3472 "(%s)", ret, strerror(-ret));
3473 goto nla_put_failure;
3474 }
3475 ret = 0;
3476 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3477 "successfully");
3478
3479 nla_put_failure:
3480 nlmsg_free(msg);
3481 return ret;
3482 }
3483
3484
3485 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3486 int ifindex, int mode)
3487 {
3488 struct nl_msg *msg;
3489 int ret = -ENOBUFS;
3490
3491 msg = nlmsg_alloc();
3492 if (!msg)
3493 return -ENOMEM;
3494
3495 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3496 0, NL80211_CMD_SET_INTERFACE, 0);
3497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3498 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3499
3500 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3501 if (!ret)
3502 return 0;
3503 nla_put_failure:
3504 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3505 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3506 return ret;
3507 }
3508
3509
3510 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3511 {
3512 struct wpa_driver_nl80211_data *drv = priv;
3513 int ret = -1;
3514 int nlmode;
3515
3516 switch (mode) {
3517 case 0:
3518 nlmode = NL80211_IFTYPE_STATION;
3519 break;
3520 case 1:
3521 nlmode = NL80211_IFTYPE_ADHOC;
3522 break;
3523 case 2:
3524 nlmode = NL80211_IFTYPE_AP;
3525 break;
3526 default:
3527 return -1;
3528 }
3529
3530 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3531 drv->nlmode = nlmode;
3532 ret = 0;
3533 goto done;
3534 }
3535
3536 if (nlmode == drv->nlmode) {
3537 ret = 0;
3538 goto done; /* Already in the requested mode */
3539 }
3540
3541 /* mac80211 doesn't allow mode changes while the device is up, so
3542 * take the device down, try to set the mode again, and bring the
3543 * device back up.
3544 */
3545 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3546 /* Try to set the mode again while the interface is down */
3547 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3548 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3549 ret = -1;
3550 }
3551
3552 if (!ret)
3553 drv->nlmode = nlmode;
3554
3555 done:
3556 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3557 /* Setup additional AP mode functionality if needed */
3558 if (drv->monitor_ifidx < 0 &&
3559 nl80211_create_monitor_interface(drv))
3560 return -1;
3561 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3562 /* Remove additional AP mode functionality */
3563 nl80211_remove_monitor_interface(drv);
3564 }
3565
3566 return ret;
3567 }
3568
3569
3570 static int wpa_driver_nl80211_get_capa(void *priv,
3571 struct wpa_driver_capa *capa)
3572 {
3573 struct wpa_driver_nl80211_data *drv = priv;
3574 if (!drv->has_capability)
3575 return -1;
3576 os_memcpy(capa, &drv->capa, sizeof(*capa));
3577 return 0;
3578 }
3579
3580
3581 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3582 {
3583 struct wpa_driver_nl80211_data *drv = priv;
3584
3585 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3586 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3587 drv->operstate = state;
3588 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3589 state ? IF_OPER_UP : IF_OPER_DORMANT);
3590 }
3591
3592
3593 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3594 {
3595 struct wpa_driver_nl80211_data *drv = priv;
3596 struct nl_msg *msg;
3597 struct nl80211_sta_flag_update upd;
3598
3599 msg = nlmsg_alloc();
3600 if (!msg)
3601 return -ENOMEM;
3602
3603 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3604 0, NL80211_CMD_SET_STATION, 0);
3605
3606 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3607 if_nametoindex(drv->ifname));
3608 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3609
3610 os_memset(&upd, 0, sizeof(upd));
3611 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3612 if (authorized)
3613 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3614 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3615
3616 return send_and_recv_msgs(drv, msg, NULL, NULL);
3617 nla_put_failure:
3618 return -ENOBUFS;
3619 }
3620
3621
3622 #ifdef HOSTAPD
3623
3624 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3625 int ifindex)
3626 {
3627 struct i802_bss *bss = &drv->bss;
3628 while (bss) {
3629 if (ifindex == bss->ifindex)
3630 return bss;
3631 bss = bss->next;
3632 }
3633 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3634 return NULL;
3635 }
3636
3637
3638 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3639 {
3640 int i;
3641 int *old;
3642
3643 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3644 ifidx);
3645 for (i = 0; i < drv->num_if_indices; i++) {
3646 if (drv->if_indices[i] == 0) {
3647 drv->if_indices[i] = ifidx;
3648 return;
3649 }
3650 }
3651
3652 if (drv->if_indices != drv->default_if_indices)
3653 old = drv->if_indices;
3654 else
3655 old = NULL;
3656
3657 drv->if_indices = os_realloc(old,
3658 sizeof(int) * (drv->num_if_indices + 1));
3659 if (!drv->if_indices) {
3660 if (!old)
3661 drv->if_indices = drv->default_if_indices;
3662 else
3663 drv->if_indices = old;
3664 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3665 "interfaces");
3666 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3667 return;
3668 }
3669 drv->if_indices[drv->num_if_indices] = ifidx;
3670 drv->num_if_indices++;
3671 }
3672
3673
3674 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3675 {
3676 int i;
3677
3678 for (i = 0; i < drv->num_if_indices; i++) {
3679 if (drv->if_indices[i] == ifidx) {
3680 drv->if_indices[i] = 0;
3681 break;
3682 }
3683 }
3684 }
3685
3686
3687 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3688 {
3689 int i;
3690
3691 for (i = 0; i < drv->num_if_indices; i++)
3692 if (drv->if_indices[i] == ifidx)
3693 return 1;
3694
3695 return 0;
3696 }
3697
3698
3699 static inline int min_int(int a, int b)
3700 {
3701 if (a < b)
3702 return a;
3703 return b;
3704 }
3705
3706
3707 static int get_key_handler(struct nl_msg *msg, void *arg)
3708 {
3709 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3710 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3711
3712 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3713 genlmsg_attrlen(gnlh, 0), NULL);
3714
3715 /*
3716 * TODO: validate the key index and mac address!
3717 * Otherwise, there's a race condition as soon as
3718 * the kernel starts sending key notifications.
3719 */
3720
3721 if (tb[NL80211_ATTR_KEY_SEQ])
3722 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3723 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3724 return NL_SKIP;
3725 }
3726
3727
3728 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3729 int idx, u8 *seq)
3730 {
3731 struct wpa_driver_nl80211_data *drv = priv;
3732 struct nl_msg *msg;
3733
3734 msg = nlmsg_alloc();
3735 if (!msg)
3736 return -ENOMEM;
3737
3738 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3739 0, NL80211_CMD_GET_KEY, 0);
3740
3741 if (addr)
3742 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3743 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3744 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3745
3746 memset(seq, 0, 6);
3747
3748 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3749 nla_put_failure:
3750 return -ENOBUFS;
3751 }
3752
3753
3754 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3755 int mode)
3756 {
3757 struct wpa_driver_nl80211_data *drv = priv;
3758 struct nl_msg *msg;
3759 u8 rates[NL80211_MAX_SUPP_RATES];
3760 u8 rates_len = 0;
3761 int i;
3762
3763 msg = nlmsg_alloc();
3764 if (!msg)
3765 return -ENOMEM;
3766
3767 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3768 NL80211_CMD_SET_BSS, 0);
3769
3770 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3771 rates[rates_len++] = basic_rates[i] / 5;
3772
3773 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3774
3775 /* TODO: multi-BSS support */
3776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3777
3778 return send_and_recv_msgs(drv, msg, NULL, NULL);
3779 nla_put_failure:
3780 return -ENOBUFS;
3781 }
3782
3783
3784 /* Set kernel driver on given frequency (MHz) */
3785 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3786 {
3787 struct wpa_driver_nl80211_data *drv = priv;
3788 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3789 freq->sec_channel_offset);
3790 }
3791
3792
3793 static int i802_set_rts(void *priv, int rts)
3794 {
3795 struct wpa_driver_nl80211_data *drv = priv;
3796 struct nl_msg *msg;
3797 int ret = -ENOBUFS;
3798 u32 val;
3799
3800 msg = nlmsg_alloc();
3801 if (!msg)
3802 return -ENOMEM;
3803
3804 if (rts >= 2347)
3805 val = (u32) -1;
3806 else
3807 val = rts;
3808
3809 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3810 0, NL80211_CMD_SET_WIPHY, 0);
3811 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3812 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3813
3814 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3815 if (!ret)
3816 return 0;
3817 nla_put_failure:
3818 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3819 "%d (%s)", rts, ret, strerror(-ret));
3820 return ret;
3821 }
3822
3823
3824 static int i802_set_frag(void *priv, int frag)
3825 {
3826 struct wpa_driver_nl80211_data *drv = priv;
3827 struct nl_msg *msg;
3828 int ret = -ENOBUFS;
3829 u32 val;
3830
3831 msg = nlmsg_alloc();
3832 if (!msg)
3833 return -ENOMEM;
3834
3835 if (frag >= 2346)
3836 val = (u32) -1;
3837 else
3838 val = frag;
3839
3840 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3841 0, NL80211_CMD_SET_WIPHY, 0);
3842 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3843 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3844
3845 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3846 if (!ret)
3847 return 0;
3848 nla_put_failure:
3849 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3850 "%d: %d (%s)", frag, ret, strerror(-ret));
3851 return ret;
3852 }
3853
3854
3855 static int i802_flush(void *priv)
3856 {
3857 struct wpa_driver_nl80211_data *drv = priv;
3858 struct nl_msg *msg;
3859
3860 msg = nlmsg_alloc();
3861 if (!msg)
3862 return -1;
3863
3864 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3865 0, NL80211_CMD_DEL_STATION, 0);
3866
3867 /*
3868 * XXX: FIX! this needs to flush all VLANs too
3869 */
3870 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3871 if_nametoindex(drv->ifname));
3872
3873 return send_and_recv_msgs(drv, msg, NULL, NULL);
3874 nla_put_failure:
3875 return -ENOBUFS;
3876 }
3877
3878
3879 static int get_sta_handler(struct nl_msg *msg, void *arg)
3880 {
3881 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3882 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3883 struct hostap_sta_driver_data *data = arg;
3884 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3885 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3886 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3887 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3888 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3889 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3890 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3891 };
3892
3893 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3894 genlmsg_attrlen(gnlh, 0), NULL);
3895
3896 /*
3897 * TODO: validate the interface and mac address!
3898 * Otherwise, there's a race condition as soon as
3899 * the kernel starts sending station notifications.
3900 */
3901
3902 if (!tb[NL80211_ATTR_STA_INFO]) {
3903 wpa_printf(MSG_DEBUG, "sta stats missing!");
3904 return NL_SKIP;
3905 }
3906 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3907 tb[NL80211_ATTR_STA_INFO],
3908 stats_policy)) {
3909 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3910 return NL_SKIP;
3911 }
3912
3913 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3914 data->inactive_msec =
3915 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3916 if (stats[NL80211_STA_INFO_RX_BYTES])
3917 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3918 if (stats[NL80211_STA_INFO_TX_BYTES])
3919 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3920 if (stats[NL80211_STA_INFO_RX_PACKETS])
3921 data->rx_packets =
3922 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3923 if (stats[NL80211_STA_INFO_TX_PACKETS])
3924 data->tx_packets =
3925 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3926
3927 return NL_SKIP;
3928 }
3929
3930 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3931 const u8 *addr)
3932 {
3933 struct wpa_driver_nl80211_data *drv = priv;
3934 struct nl_msg *msg;
3935
3936 os_memset(data, 0, sizeof(*data));
3937 msg = nlmsg_alloc();
3938 if (!msg)
3939 return -ENOMEM;
3940
3941 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3942 0, NL80211_CMD_GET_STATION, 0);
3943
3944 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3945 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3946
3947 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
3948 nla_put_failure:
3949 return -ENOBUFS;
3950 }
3951
3952
3953 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
3954 int cw_min, int cw_max, int burst_time)
3955 {
3956 struct wpa_driver_nl80211_data *drv = priv;
3957 struct nl_msg *msg;
3958 struct nlattr *txq, *params;
3959
3960 msg = nlmsg_alloc();
3961 if (!msg)
3962 return -1;
3963
3964 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3965 0, NL80211_CMD_SET_WIPHY, 0);
3966
3967 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3968
3969 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
3970 if (!txq)
3971 goto nla_put_failure;
3972
3973 /* We are only sending parameters for a single TXQ at a time */
3974 params = nla_nest_start(msg, 1);
3975 if (!params)
3976 goto nla_put_failure;
3977
3978 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
3979 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
3980 * 32 usec, so need to convert the value here. */
3981 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
3982 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
3983 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
3984 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
3985
3986 nla_nest_end(msg, params);
3987
3988 nla_nest_end(msg, txq);
3989
3990 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3991 return 0;
3992 nla_put_failure:
3993 return -1;
3994 }
3995
3996
3997 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
3998 {
3999 struct wpa_driver_nl80211_data *drv = priv;
4000 struct nl_msg *msg;
4001
4002 msg = nlmsg_alloc();
4003 if (!msg)
4004 return -ENOMEM;
4005
4006 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4007 NL80211_CMD_SET_BSS, 0);
4008
4009 if (cts >= 0)
4010 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4011 if (preamble >= 0)
4012 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4013 if (slot >= 0)
4014 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4015
4016 /* TODO: multi-BSS support */
4017 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4018
4019 return send_and_recv_msgs(drv, msg, NULL, NULL);
4020 nla_put_failure:
4021 return -ENOBUFS;
4022 }
4023
4024
4025 static int i802_set_cts_protect(void *priv, int value)
4026 {
4027 return i802_set_bss(priv, value, -1, -1);
4028 }
4029
4030
4031 static int i802_set_preamble(void *priv, int value)
4032 {
4033 return i802_set_bss(priv, -1, value, -1);
4034 }
4035
4036
4037 static int i802_set_short_slot_time(void *priv, int value)
4038 {
4039 return i802_set_bss(priv, -1, -1, value);
4040 }
4041
4042
4043 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4044 const char *ifname, int vlan_id)
4045 {
4046 struct wpa_driver_nl80211_data *drv = priv;
4047 struct nl_msg *msg;
4048
4049 msg = nlmsg_alloc();
4050 if (!msg)
4051 return -ENOMEM;
4052
4053 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4054 0, NL80211_CMD_SET_STATION, 0);
4055
4056 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4057 if_nametoindex(drv->ifname));
4058 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4059 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4060 if_nametoindex(ifname));
4061
4062 return send_and_recv_msgs(drv, msg, NULL, NULL);
4063 nla_put_failure:
4064 return -ENOBUFS;
4065 }
4066
4067
4068 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4069 {
4070 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4071 struct sockaddr_ll lladdr;
4072 unsigned char buf[3000];
4073 int len;
4074 socklen_t fromlen = sizeof(lladdr);
4075
4076 len = recvfrom(sock, buf, sizeof(buf), 0,
4077 (struct sockaddr *)&lladdr, &fromlen);
4078 if (len < 0) {
4079 perror("recv");
4080 return;
4081 }
4082
4083 if (have_ifidx(drv, lladdr.sll_ifindex)) {
4084 void *ctx;
4085 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
4086 if (!ctx)
4087 return;
4088 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
4089 }
4090 }
4091
4092
4093 static int i802_get_inact_sec(void *priv, const u8 *addr)
4094 {
4095 struct hostap_sta_driver_data data;
4096 int ret;
4097
4098 data.inactive_msec = (unsigned long) -1;
4099 ret = i802_read_sta_data(priv, &data, addr);
4100 if (ret || data.inactive_msec == (unsigned long) -1)
4101 return -1;
4102 return data.inactive_msec / 1000;
4103 }
4104
4105
4106 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4107 {
4108 #if 0
4109 /* TODO */
4110 #endif
4111 return 0;
4112 }
4113
4114
4115 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4116 int reason)
4117 {
4118 struct wpa_driver_nl80211_data *drv = priv;
4119 struct ieee80211_mgmt mgmt;
4120
4121 memset(&mgmt, 0, sizeof(mgmt));
4122 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4123 WLAN_FC_STYPE_DEAUTH);
4124 memcpy(mgmt.da, addr, ETH_ALEN);
4125 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4126 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4127 mgmt.u.deauth.reason_code = host_to_le16(reason);
4128 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4129 IEEE80211_HDRLEN +
4130 sizeof(mgmt.u.deauth));
4131 }
4132
4133
4134 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4135 int reason)
4136 {
4137 struct wpa_driver_nl80211_data *drv = priv;
4138 struct ieee80211_mgmt mgmt;
4139
4140 memset(&mgmt, 0, sizeof(mgmt));
4141 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4142 WLAN_FC_STYPE_DISASSOC);
4143 memcpy(mgmt.da, addr, ETH_ALEN);
4144 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4145 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4146 mgmt.u.disassoc.reason_code = host_to_le16(reason);
4147 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4148 IEEE80211_HDRLEN +
4149 sizeof(mgmt.u.disassoc));
4150 }
4151
4152
4153 static void *i802_init(struct hostapd_data *hapd,
4154 struct wpa_init_params *params)
4155 {
4156 struct wpa_driver_nl80211_data *drv;
4157 size_t i;
4158
4159 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4160 if (drv == NULL)
4161 return NULL;
4162
4163 drv->bss.ifindex = drv->ifindex;
4164
4165 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4166 drv->if_indices = drv->default_if_indices;
4167 for (i = 0; i < params->num_bridge; i++) {
4168 if (params->bridge[i])
4169 add_ifidx(drv, if_nametoindex(params->bridge[i]));
4170 }
4171
4172 /* start listening for EAPOL on the default AP interface */
4173 add_ifidx(drv, drv->ifindex);
4174
4175 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4176 goto failed;
4177
4178 if (params->bssid) {
4179 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4180 goto failed;
4181 }
4182
4183 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4184 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4185 "into AP mode", drv->ifname);
4186 goto failed;
4187 }
4188
4189 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4190 goto failed;
4191
4192 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4193 if (drv->eapol_sock < 0) {
4194 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4195 goto failed;
4196 }
4197
4198 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4199 {
4200 printf("Could not register read socket for eapol\n");
4201 goto failed;
4202 }
4203
4204 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4205 goto failed;
4206
4207 return drv;
4208
4209 failed:
4210 nl80211_remove_monitor_interface(drv);
4211 if (drv->ioctl_sock >= 0)
4212 close(drv->ioctl_sock);
4213
4214 genl_family_put(drv->nl80211);
4215 nl_cache_free(drv->nl_cache);
4216 nl_handle_destroy(drv->nl_handle);
4217 nl_cb_put(drv->nl_cb);
4218
4219 os_free(drv);
4220 return NULL;
4221 }
4222
4223
4224 static void i802_deinit(void *priv)
4225 {
4226 wpa_driver_nl80211_deinit(priv);
4227 }
4228
4229 #endif /* HOSTAPD */
4230
4231
4232 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4233 enum wpa_driver_if_type type)
4234 {
4235 switch (type) {
4236 case WPA_IF_STATION:
4237 return NL80211_IFTYPE_STATION;
4238 case WPA_IF_AP_VLAN:
4239 return NL80211_IFTYPE_AP_VLAN;
4240 case WPA_IF_AP_BSS:
4241 return NL80211_IFTYPE_AP;
4242 }
4243 return -1;
4244 }
4245
4246
4247 static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4248 enum wpa_driver_if_type type,
4249 const char *ifname, const u8 *addr,
4250 void *bss_ctx)
4251 {
4252 struct wpa_driver_nl80211_data *drv = priv;
4253 int ifidx;
4254 #ifdef HOSTAPD
4255 struct i802_bss *bss = NULL;
4256
4257 if (type == WPA_IF_AP_BSS) {
4258 bss = os_zalloc(sizeof(*bss));
4259 if (bss == NULL)
4260 return -1;
4261 }
4262 #endif /* HOSTAPD */
4263
4264 ifidx = nl80211_create_iface(drv, ifname,
4265 wpa_driver_nl80211_if_type(type), addr);
4266 if (ifidx < 0) {
4267 #ifdef HOSTAPD
4268 os_free(bss);
4269 #endif /* HOSTAPD */
4270 return -1;
4271 }
4272
4273 #ifdef HOSTAPD
4274 if (type == WPA_IF_AP_BSS) {
4275 if (hostapd_set_iface_flags(priv, ifname, 1)) {
4276 nl80211_remove_iface(priv, ifidx);
4277 os_free(bss);
4278 return -1;
4279 }
4280 bss->ifindex = ifidx;
4281 bss->next = drv->bss.next;
4282 drv->bss.next = bss;
4283 }
4284 #endif /* HOSTAPD */
4285
4286 return 0;
4287 }
4288
4289
4290 static int wpa_driver_nl80211_if_remove(void *priv,
4291 enum wpa_driver_if_type type,
4292 const char *ifname)
4293 {
4294 struct wpa_driver_nl80211_data *drv = priv;
4295 int ifindex = if_nametoindex(ifname);
4296
4297 nl80211_remove_iface(drv, ifindex);
4298
4299 #ifdef HOSTAPD
4300 if (type == WPA_IF_AP_BSS) {
4301 struct i802_bss *bss, *prev;
4302 prev = &drv->bss;
4303 bss = drv->bss.next;
4304 while (bss) {
4305 if (ifindex == bss->ifindex) {
4306 prev->next = bss->next;
4307 os_free(bss);
4308 break;
4309 }
4310 prev = bss;
4311 bss = bss->next;
4312 }
4313 }
4314 #endif /* HOSTAPD */
4315
4316 return 0;
4317 }
4318
4319
4320 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4321 .name = "nl80211",
4322 .desc = "Linux nl80211/cfg80211",
4323 .get_bssid = wpa_driver_nl80211_get_bssid,
4324 .get_ssid = wpa_driver_nl80211_get_ssid,
4325 .set_key = wpa_driver_nl80211_set_key,
4326 .scan2 = wpa_driver_nl80211_scan,
4327 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4328 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4329 .disassociate = wpa_driver_nl80211_disassociate,
4330 .authenticate = wpa_driver_nl80211_authenticate,
4331 .associate = wpa_driver_nl80211_associate,
4332 .init = wpa_driver_nl80211_init,
4333 .deinit = wpa_driver_nl80211_deinit,
4334 .get_capa = wpa_driver_nl80211_get_capa,
4335 .set_operstate = wpa_driver_nl80211_set_operstate,
4336 .set_supp_port = wpa_driver_nl80211_set_supp_port,
4337 .set_country = wpa_driver_nl80211_set_country,
4338 .set_beacon = wpa_driver_nl80211_set_beacon,
4339 .if_add = wpa_driver_nl80211_if_add,
4340 .if_remove = wpa_driver_nl80211_if_remove,
4341 .send_mlme = wpa_driver_nl80211_send_mlme,
4342 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4343 .sta_add = wpa_driver_nl80211_sta_add,
4344 .sta_remove = wpa_driver_nl80211_sta_remove,
4345 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4346 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4347 #ifdef HOSTAPD
4348 .hapd_init = i802_init,
4349 .hapd_deinit = i802_deinit,
4350 .get_seqnum = i802_get_seqnum,
4351 .flush = i802_flush,
4352 .read_sta_data = i802_read_sta_data,
4353 .sta_deauth = i802_sta_deauth,
4354 .sta_disassoc = i802_sta_disassoc,
4355 .get_inact_sec = i802_get_inact_sec,
4356 .sta_clear_stats = i802_sta_clear_stats,
4357 .set_freq = i802_set_freq,
4358 .set_rts = i802_set_rts,
4359 .set_frag = i802_set_frag,
4360 .set_rate_sets = i802_set_rate_sets,
4361 .set_cts_protect = i802_set_cts_protect,
4362 .set_preamble = i802_set_preamble,
4363 .set_short_slot_time = i802_set_short_slot_time,
4364 .set_tx_queue_params = i802_set_tx_queue_params,
4365 .set_sta_vlan = i802_set_sta_vlan,
4366 #endif /* HOSTAPD */
4367 };
Unnamed repository; edit this file 'description' to name the repository.