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Actually hook powernow.4 into the build.
[dragonfly.git] / contrib / hostapd / hostapd / driver_nl80211.c
blob4599e99eadcd5e8d2b117c42503696029518de95
1 /*
2 * hostapd / Kernel driver communication via nl80211
3 * Copyright (c) 2002-2007, 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 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * Alternatively, this software may be distributed under the terms of BSD
13 * license.
14 *
15 * See README and COPYING for more details.
16 */
17
18 #include "includes.h"
19
20 #include <sys/ioctl.h>
21 #include <netlink/genl/genl.h>
22 #include <netlink/genl/family.h>
23 #include <netlink/genl/ctrl.h>
24 #include <netlink/msg.h>
25 #include <netlink/attr.h>
26 #include "nl80211_copy.h"
27 #include <net/if.h>
28 #include <netpacket/packet.h>
29 #include "wireless_copy.h"
30 #include <linux/filter.h>
31 #include <net/if_arp.h>
32
33 #include "hostapd.h"
34 #include "driver.h"
35 #include "ieee802_1x.h"
36 #include "eloop.h"
37 #include "ieee802_11.h"
38 #include "sta_info.h"
39 #include "hw_features.h"
40 #include "mlme.h"
41 #include "radiotap.h"
42 #include "radiotap_iter.h"
43
44 #ifdef CONFIG_LIBNL20
45 /* libnl 2.0 compatibility code */
46 #define nl_handle_alloc_cb nl_socket_alloc_cb
47 #define nl_handle_destroy nl_socket_free
48 #endif /* CONFIG_LIBNL20 */
49
50 enum ieee80211_msg_type {
51 ieee80211_msg_normal = 0,
52 ieee80211_msg_tx_callback_ack = 1,
53 ieee80211_msg_tx_callback_fail = 2,
54 };
55
56 struct i802_driver_data {
57 struct hostapd_data *hapd;
58
59 char iface[IFNAMSIZ + 1];
60 int bridge;
61 int ioctl_sock; /* socket for ioctl() use */
62 int wext_sock; /* socket for wireless events */
63 int eapol_sock; /* socket for EAPOL frames */
64 int monitor_sock; /* socket for monitor */
65 int monitor_ifidx;
66
67 int default_if_indices[16];
68 int *if_indices;
69 int num_if_indices;
70
71 int we_version;
72 struct nl_handle *nl_handle;
73 struct nl_cache *nl_cache;
74 struct nl_cb *nl_cb;
75 struct genl_family *nl80211;
76 int dtim_period, beacon_int;
77 unsigned int beacon_set:1;
78 unsigned int ieee802_1x_active:1;
79
80 int last_freq;
81 int last_freq_ht;
82 };
83
84
85 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
86 {
87 int i;
88 int *old;
89
90 for (i = 0; i < drv->num_if_indices; i++) {
91 if (drv->if_indices[i] == 0) {
92 drv->if_indices[i] = ifidx;
93 return;
94 }
95 }
96
97 if (drv->if_indices != drv->default_if_indices)
98 old = drv->if_indices;
99 else
100 old = NULL;
101
102 drv->if_indices = realloc(old,
103 sizeof(int) * (drv->num_if_indices + 1));
104 if (!drv->if_indices) {
105 if (!old)
106 drv->if_indices = drv->default_if_indices;
107 else
108 drv->if_indices = old;
109 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
110 "interfaces");
111 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
112 return;
113 }
114 drv->if_indices[drv->num_if_indices] = ifidx;
115 drv->num_if_indices++;
116 }
117
118
119 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
120 {
121 int i;
122
123 for (i = 0; i < drv->num_if_indices; i++) {
124 if (drv->if_indices[i] == ifidx) {
125 drv->if_indices[i] = 0;
126 break;
127 }
128 }
129 }
130
131
132 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
133 {
134 int i;
135
136 if (ifidx == drv->bridge)
137 return 1;
138
139 for (i = 0; i < drv->num_if_indices; i++)
140 if (drv->if_indices[i] == ifidx)
141 return 1;
142
143 return 0;
144 }
145
146
147 /* nl80211 code */
148 static int ack_handler(struct nl_msg *msg, void *arg)
149 {
150 int *err = arg;
151 *err = 0;
152 return NL_STOP;
153 }
154
155 static int finish_handler(struct nl_msg *msg, void *arg)
156 {
157 int *ret = arg;
158 *ret = 0;
159 return NL_SKIP;
160 }
161
162 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
163 void *arg)
164 {
165 int *ret = arg;
166 *ret = err->error;
167 return NL_SKIP;
168 }
169
170 static int send_and_recv_msgs(struct i802_driver_data *drv,
171 struct nl_msg *msg,
172 int (*valid_handler)(struct nl_msg *, void *),
173 void *valid_data)
174 {
175 struct nl_cb *cb;
176 int err = -ENOMEM;
177
178 cb = nl_cb_clone(drv->nl_cb);
179 if (!cb)
180 goto out;
181
182 err = nl_send_auto_complete(drv->nl_handle, msg);
183 if (err < 0)
184 goto out;
185
186 err = 1;
187
188 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
189 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
190 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
191
192 if (valid_handler)
193 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
194 valid_handler, valid_data);
195
196 while (err > 0)
197 nl_recvmsgs(drv->nl_handle, cb);
198 out:
199 nl_cb_put(cb);
200 nlmsg_free(msg);
201 return err;
202 }
203
204 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
205 const char *ifname, int dev_up)
206 {
207 struct ifreq ifr;
208
209 if (drv->ioctl_sock < 0)
210 return -1;
211
212 memset(&ifr, 0, sizeof(ifr));
213 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
214
215 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
216 perror("ioctl[SIOCGIFFLAGS]");
217 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
218 drv->iface);
219 return -1;
220 }
221
222 if (dev_up)
223 ifr.ifr_flags |= IFF_UP;
224 else
225 ifr.ifr_flags &= ~IFF_UP;
226
227 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
228 perror("ioctl[SIOCSIFFLAGS]");
229 return -1;
230 }
231
232 return 0;
233 }
234
235
236 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
237 const char *alg, const u8 *addr, int idx, const u8 *key,
238 size_t key_len, int txkey)
239 {
240 struct nl_msg *msg;
241 int ret;
242
243 msg = nlmsg_alloc();
244 if (!msg)
245 return -ENOMEM;
246
247 if (strcmp(alg, "none") == 0) {
248 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
249 0, NL80211_CMD_DEL_KEY, 0);
250 } else {
251 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
252 0, NL80211_CMD_NEW_KEY, 0);
253 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
254 if (strcmp(alg, "WEP") == 0) {
255 if (key_len == 5)
256 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
257 0x000FAC01);
258 else
259 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
260 0x000FAC05);
261 } else if (strcmp(alg, "TKIP") == 0)
262 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
263 else if (strcmp(alg, "CCMP") == 0)
264 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
265 else if (strcmp(alg, "IGTK") == 0)
266 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
267 else {
268 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
269 "algorithm '%s'", __func__, alg);
270 nlmsg_free(msg);
271 return -1;
272 }
273 }
274
275 if (addr)
276 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
277 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
278 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
279
280 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
281 if (ret == -ENOENT)
282 ret = 0;
283
284 /*
285 * If we failed or don't need to set the default TX key (below),
286 * we're done here.
287 */
288 if (ret || !txkey || addr)
289 return ret;
290
291 msg = nlmsg_alloc();
292 if (!msg)
293 return -ENOMEM;
294
295 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
296 0, NL80211_CMD_SET_KEY, 0);
297 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
298 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
299 if (strcmp(alg, "IGTK") == 0)
300 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
301 else
302 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
303
304 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
305 if (ret == -ENOENT)
306 ret = 0;
307 return ret;
308 nla_put_failure:
309 return -ENOBUFS;
310 }
311
312
313 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
314 const u8 *addr, int idx, const u8 *key,
315 size_t key_len, int txkey)
316 {
317 struct i802_driver_data *drv = priv;
318 int ret;
319
320 ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
321 key_len, txkey);
322 if (ret < 0)
323 return ret;
324
325 return ret;
326 }
327
328
329 static inline int min_int(int a, int b)
330 {
331 if (a < b)
332 return a;
333 return b;
334 }
335
336
337 static int get_key_handler(struct nl_msg *msg, void *arg)
338 {
339 struct nlattr *tb[NL80211_ATTR_MAX + 1];
340 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
341
342 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
343 genlmsg_attrlen(gnlh, 0), NULL);
344
345 /*
346 * TODO: validate the key index and mac address!
347 * Otherwise, there's a race condition as soon as
348 * the kernel starts sending key notifications.
349 */
350
351 if (tb[NL80211_ATTR_KEY_SEQ])
352 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
353 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
354 return NL_SKIP;
355 }
356
357
358 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
359 int idx, u8 *seq)
360 {
361 struct i802_driver_data *drv = priv;
362 struct nl_msg *msg;
363
364 msg = nlmsg_alloc();
365 if (!msg)
366 return -ENOMEM;
367
368 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
369 0, NL80211_CMD_GET_KEY, 0);
370
371 if (addr)
372 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
373 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
374 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
375
376 memset(seq, 0, 6);
377
378 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
379 nla_put_failure:
380 return -ENOBUFS;
381 }
382
383
384 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
385 int mode)
386 {
387 struct i802_driver_data *drv = priv;
388 struct nl_msg *msg;
389 u8 rates[NL80211_MAX_SUPP_RATES];
390 u8 rates_len = 0;
391 int i;
392
393 msg = nlmsg_alloc();
394 if (!msg)
395 return -ENOMEM;
396
397 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
398 NL80211_CMD_SET_BSS, 0);
399
400 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
401 rates[rates_len++] = basic_rates[i] / 5;
402
403 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
404
405 /* TODO: multi-BSS support */
406 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
407
408 return send_and_recv_msgs(drv, msg, NULL, NULL);
409 nla_put_failure:
410 return -ENOBUFS;
411 }
412
413
414 static int i802_send_frame(void *priv, const void *data, size_t len,
415 int encrypt, int flags)
416 {
417 __u8 rtap_hdr[] = {
418 0x00, 0x00, /* radiotap version */
419 0x0e, 0x00, /* radiotap length */
420 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
421 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
422 0x00, /* padding */
423 0x00, 0x00, /* RX and TX flags to indicate that */
424 0x00, 0x00, /* this is the injected frame directly */
425 };
426 struct i802_driver_data *drv = priv;
427 struct iovec iov[2] = {
428 {
429 .iov_base = &rtap_hdr,
430 .iov_len = sizeof(rtap_hdr),
431 },
432 {
433 .iov_base = (void*)data,
434 .iov_len = len,
435 }
436 };
437 struct msghdr msg = {
438 .msg_name = NULL,
439 .msg_namelen = 0,
440 .msg_iov = iov,
441 .msg_iovlen = 2,
442 .msg_control = NULL,
443 .msg_controllen = 0,
444 .msg_flags = 0,
445 };
446
447 if (encrypt)
448 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
449
450 return sendmsg(drv->monitor_sock, &msg, flags);
451 }
452
453 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
454 int flags)
455 {
456 struct ieee80211_mgmt *mgmt;
457 int do_not_encrypt = 0;
458 u16 fc;
459
460 mgmt = (struct ieee80211_mgmt *) data;
461 fc = le_to_host16(mgmt->frame_control);
462
463 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
464 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
465 /*
466 * Only one of the authentication frame types is encrypted.
467 * In order for static WEP encryption to work properly (i.e.,
468 * to not encrypt the frame), we need to tell mac80211 about
469 * the frames that must not be encrypted.
470 */
471 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
472 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
473 if (auth_alg == WLAN_AUTH_OPEN ||
474 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
475 do_not_encrypt = 1;
476 }
477
478 return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
479 }
480
481 /* Set kernel driver on given frequency (MHz) */
482 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
483 {
484 struct i802_driver_data *drv = priv;
485 struct nl_msg *msg;
486
487 msg = nlmsg_alloc();
488 if (!msg)
489 return -1;
490
491 drv->last_freq = freq->freq;
492 drv->last_freq_ht = freq->ht_enabled;
493
494 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
495 NL80211_CMD_SET_WIPHY, 0);
496
497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
498 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
499 if (freq->ht_enabled) {
500 switch (freq->sec_channel_offset) {
501 case -1:
502 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
503 NL80211_CHAN_HT40MINUS);
504 break;
505 case 1:
506 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
507 NL80211_CHAN_HT40PLUS);
508 break;
509 default:
510 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
511 NL80211_CHAN_HT20);
512 break;
513 }
514 }
515
516 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
517 return 0;
518 nla_put_failure:
519 return -1;
520 }
521
522
523 static int i802_set_rts(void *priv, int rts)
524 {
525 struct i802_driver_data *drv = priv;
526 struct iwreq iwr;
527
528 memset(&iwr, 0, sizeof(iwr));
529 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
530 iwr.u.rts.value = rts;
531 iwr.u.rts.fixed = 1;
532
533 if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
534 perror("ioctl[SIOCSIWRTS]");
535 return -1;
536 }
537
538 return 0;
539 }
540
541
542 static int i802_get_rts(void *priv, int *rts)
543 {
544 struct i802_driver_data *drv = priv;
545 struct iwreq iwr;
546
547 memset(&iwr, 0, sizeof(iwr));
548 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
549
550 if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
551 perror("ioctl[SIOCGIWRTS]");
552 return -1;
553 }
554
555 *rts = iwr.u.rts.value;
556
557 return 0;
558 }
559
560
561 static int i802_set_frag(void *priv, int frag)
562 {
563 struct i802_driver_data *drv = priv;
564 struct iwreq iwr;
565
566 memset(&iwr, 0, sizeof(iwr));
567 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
568 iwr.u.frag.value = frag;
569 iwr.u.frag.fixed = 1;
570
571 if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
572 perror("ioctl[SIOCSIWFRAG]");
573 return -1;
574 }
575
576 return 0;
577 }
578
579
580 static int i802_get_frag(void *priv, int *frag)
581 {
582 struct i802_driver_data *drv = priv;
583 struct iwreq iwr;
584
585 memset(&iwr, 0, sizeof(iwr));
586 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
587
588 if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
589 perror("ioctl[SIOCGIWFRAG]");
590 return -1;
591 }
592
593 *frag = iwr.u.frag.value;
594
595 return 0;
596 }
597
598
599 static int i802_set_retry(void *priv, int short_retry, int long_retry)
600 {
601 struct i802_driver_data *drv = priv;
602 struct iwreq iwr;
603
604 memset(&iwr, 0, sizeof(iwr));
605 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
606
607 iwr.u.retry.value = short_retry;
608 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
609 if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
610 perror("ioctl[SIOCSIWRETRY(short)]");
611 return -1;
612 }
613
614 iwr.u.retry.value = long_retry;
615 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
616 if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
617 perror("ioctl[SIOCSIWRETRY(long)]");
618 return -1;
619 }
620
621 return 0;
622 }
623
624
625 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
626 {
627 struct i802_driver_data *drv = priv;
628 struct iwreq iwr;
629
630 memset(&iwr, 0, sizeof(iwr));
631 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
632
633 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
634 if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
635 perror("ioctl[SIOCGIWFRAG(short)]");
636 return -1;
637 }
638 *short_retry = iwr.u.retry.value;
639
640 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
641 if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
642 perror("ioctl[SIOCGIWFRAG(long)]");
643 return -1;
644 }
645 *long_retry = iwr.u.retry.value;
646
647 return 0;
648 }
649
650
651 static int i802_flush(void *priv)
652 {
653 struct i802_driver_data *drv = priv;
654 struct nl_msg *msg;
655
656 msg = nlmsg_alloc();
657 if (!msg)
658 return -1;
659
660 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
661 0, NL80211_CMD_DEL_STATION, 0);
662
663 /*
664 * XXX: FIX! this needs to flush all VLANs too
665 */
666 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
667 if_nametoindex(drv->iface));
668
669 return send_and_recv_msgs(drv, msg, NULL, NULL);
670 nla_put_failure:
671 return -ENOBUFS;
672 }
673
674
675 static int get_sta_handler(struct nl_msg *msg, void *arg)
676 {
677 struct nlattr *tb[NL80211_ATTR_MAX + 1];
678 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
679 struct hostap_sta_driver_data *data = arg;
680 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
681 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
682 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
683 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
684 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
685 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
686 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
687 };
688
689 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
690 genlmsg_attrlen(gnlh, 0), NULL);
691
692 /*
693 * TODO: validate the interface and mac address!
694 * Otherwise, there's a race condition as soon as
695 * the kernel starts sending station notifications.
696 */
697
698 if (!tb[NL80211_ATTR_STA_INFO]) {
699 wpa_printf(MSG_DEBUG, "sta stats missing!");
700 return NL_SKIP;
701 }
702 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
703 tb[NL80211_ATTR_STA_INFO],
704 stats_policy)) {
705 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
706 return NL_SKIP;
707 }
708
709 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
710 data->inactive_msec =
711 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
712 if (stats[NL80211_STA_INFO_RX_BYTES])
713 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
714 if (stats[NL80211_STA_INFO_TX_BYTES])
715 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
716 if (stats[NL80211_STA_INFO_RX_PACKETS])
717 data->rx_packets =
718 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
719 if (stats[NL80211_STA_INFO_TX_PACKETS])
720 data->tx_packets =
721 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
722
723 return NL_SKIP;
724 }
725
726 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
727 const u8 *addr)
728 {
729 struct i802_driver_data *drv = priv;
730 struct nl_msg *msg;
731
732 os_memset(data, 0, sizeof(*data));
733 msg = nlmsg_alloc();
734 if (!msg)
735 return -ENOMEM;
736
737 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
738 0, NL80211_CMD_GET_STATION, 0);
739
740 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
741 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
742
743 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
744 nla_put_failure:
745 return -ENOBUFS;
746 }
747
748
749 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
750 size_t data_len, int encrypt, const u8 *own_addr)
751 {
752 struct i802_driver_data *drv = priv;
753 struct ieee80211_hdr *hdr;
754 size_t len;
755 u8 *pos;
756 int res;
757 #if 0 /* FIX */
758 int qos = sta->flags & WLAN_STA_WME;
759 #else
760 int qos = 0;
761 #endif
762
763 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
764 data_len;
765 hdr = os_zalloc(len);
766 if (hdr == NULL) {
767 printf("malloc() failed for i802_send_data(len=%lu)\n",
768 (unsigned long) len);
769 return -1;
770 }
771
772 hdr->frame_control =
773 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
774 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
775 if (encrypt)
776 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
777 #if 0 /* To be enabled if qos determination is added above */
778 if (qos) {
779 hdr->frame_control |=
780 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
781 }
782 #endif
783
784 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
785 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
786 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
787 pos = (u8 *) (hdr + 1);
788
789 #if 0 /* To be enabled if qos determination is added above */
790 if (qos) {
791 /* add an empty QoS header if needed */
792 pos[0] = 0;
793 pos[1] = 0;
794 pos += 2;
795 }
796 #endif
797
798 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
799 pos += sizeof(rfc1042_header);
800 WPA_PUT_BE16(pos, ETH_P_PAE);
801 pos += 2;
802 memcpy(pos, data, data_len);
803
804 res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
805 free(hdr);
806
807 if (res < 0) {
808 perror("i802_send_eapol: send");
809 printf("i802_send_eapol - packet len: %lu - failed\n",
810 (unsigned long) len);
811 }
812
813 return res;
814 }
815
816
817 static int i802_sta_add2(const char *ifname, void *priv,
818 struct hostapd_sta_add_params *params)
819 {
820 struct i802_driver_data *drv = priv;
821 struct nl_msg *msg;
822 int ret = -ENOBUFS;
823
824 msg = nlmsg_alloc();
825 if (!msg)
826 return -ENOMEM;
827
828 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
829 0, NL80211_CMD_NEW_STATION, 0);
830
831 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
832 if_nametoindex(drv->iface));
833 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
834 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
835 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
836 params->supp_rates);
837 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
838 params->listen_interval);
839
840 #ifdef CONFIG_IEEE80211N
841 if (params->ht_capabilities) {
842 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
843 params->ht_capabilities->length,
844 &params->ht_capabilities->data);
845 }
846 #endif /* CONFIG_IEEE80211N */
847
848 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
849 if (ret)
850 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
851 "result: %d (%s)", ret, strerror(-ret));
852 if (ret == -EEXIST)
853 ret = 0;
854 nla_put_failure:
855 return ret;
856 }
857
858
859 static int i802_sta_remove(void *priv, const u8 *addr)
860 {
861 struct i802_driver_data *drv = priv;
862 struct nl_msg *msg;
863 int ret;
864
865 msg = nlmsg_alloc();
866 if (!msg)
867 return -ENOMEM;
868
869 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
870 0, NL80211_CMD_DEL_STATION, 0);
871
872 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
873 if_nametoindex(drv->iface));
874 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
875
876 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
877 if (ret == -ENOENT)
878 return 0;
879 return ret;
880 nla_put_failure:
881 return -ENOBUFS;
882 }
883
884
885 static int i802_sta_set_flags(void *priv, const u8 *addr,
886 int total_flags, int flags_or, int flags_and)
887 {
888 struct i802_driver_data *drv = priv;
889 struct nl_msg *msg, *flags = NULL;
890
891 msg = nlmsg_alloc();
892 if (!msg)
893 return -ENOMEM;
894
895 flags = nlmsg_alloc();
896 if (!flags) {
897 nlmsg_free(msg);
898 return -ENOMEM;
899 }
900
901 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
902 0, NL80211_CMD_SET_STATION, 0);
903
904 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
905 if_nametoindex(drv->iface));
906 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
907
908 if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
909 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
910
911 if (total_flags & WLAN_STA_WMM)
912 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
913
914 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
915 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
916
917 if (total_flags & WLAN_STA_MFP)
918 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
919
920 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
921 goto nla_put_failure;
922
923 nlmsg_free(flags);
924
925 return send_and_recv_msgs(drv, msg, NULL, NULL);
926 nla_put_failure:
927 nlmsg_free(flags);
928 return -ENOBUFS;
929 }
930
931
932 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
933 {
934 return -1;
935 }
936
937
938 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
939 int cw_min, int cw_max, int burst_time)
940 {
941 struct i802_driver_data *drv = priv;
942 struct nl_msg *msg;
943 struct nlattr *txq, *params;
944
945 msg = nlmsg_alloc();
946 if (!msg)
947 return -1;
948
949 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
950 0, NL80211_CMD_SET_WIPHY, 0);
951
952 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
953
954 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
955 if (!txq)
956 goto nla_put_failure;
957
958 /* We are only sending parameters for a single TXQ at a time */
959 params = nla_nest_start(msg, 1);
960 if (!params)
961 goto nla_put_failure;
962
963 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
964 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
965 * 32 usec, so need to convert the value here. */
966 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
967 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
968 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
969 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
970
971 nla_nest_end(msg, params);
972
973 nla_nest_end(msg, txq);
974
975 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
976 return 0;
977 nla_put_failure:
978 return -1;
979 }
980
981
982 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
983 {
984 struct nl_msg *msg;
985
986 /* stop listening for EAPOL on this interface */
987 del_ifidx(drv, ifidx);
988
989 msg = nlmsg_alloc();
990 if (!msg)
991 goto nla_put_failure;
992
993 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
994 0, NL80211_CMD_DEL_INTERFACE, 0);
995 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
996
997 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
998 return;
999 nla_put_failure:
1000 printf("Failed to remove interface.\n");
1001 }
1002
1003
1004 static int nl80211_create_iface(struct i802_driver_data *drv,
1005 const char *ifname,
1006 enum nl80211_iftype iftype,
1007 const u8 *addr)
1008 {
1009 struct nl_msg *msg, *flags = NULL;
1010 int ifidx;
1011 struct ifreq ifreq;
1012 struct iwreq iwr;
1013 int ret = -ENOBUFS;
1014
1015 msg = nlmsg_alloc();
1016 if (!msg)
1017 return -1;
1018
1019 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1020 0, NL80211_CMD_NEW_INTERFACE, 0);
1021 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1022 if_nametoindex(drv->hapd->conf->iface));
1023 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1024 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1025
1026 if (iftype == NL80211_IFTYPE_MONITOR) {
1027 int err;
1028
1029 flags = nlmsg_alloc();
1030 if (!flags)
1031 goto nla_put_failure;
1032
1033 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1034
1035 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1036
1037 nlmsg_free(flags);
1038
1039 if (err)
1040 goto nla_put_failure;
1041 }
1042
1043 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1044 if (ret) {
1045 nla_put_failure:
1046 printf("Failed to create interface %s.\n", ifname);
1047 return ret;
1048 }
1049
1050 ifidx = if_nametoindex(ifname);
1051
1052 if (ifidx <= 0)
1053 return -1;
1054
1055 /* start listening for EAPOL on this interface */
1056 add_ifidx(drv, ifidx);
1057
1058 if (addr) {
1059 switch (iftype) {
1060 case NL80211_IFTYPE_AP:
1061 os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1062 memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1063 ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1064
1065 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1066 nl80211_remove_iface(drv, ifidx);
1067 return -1;
1068 }
1069 break;
1070 case NL80211_IFTYPE_WDS:
1071 memset(&iwr, 0, sizeof(iwr));
1072 os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1073 iwr.u.addr.sa_family = ARPHRD_ETHER;
1074 memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1075 if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1076 return -1;
1077 break;
1078 default:
1079 /* nothing */
1080 break;
1081 }
1082 }
1083
1084 return ifidx;
1085 }
1086
1087
1088 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1089 {
1090 int ifidx;
1091
1092 /*
1093 * The kernel supports that when the low-level driver does,
1094 * but we currently don't because we need per-BSS data that
1095 * currently we can't handle easily.
1096 */
1097 return -1;
1098
1099 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1100 if (ifidx < 0)
1101 return -1;
1102 if (hostapd_set_iface_flags(priv, ifname, 1)) {
1103 nl80211_remove_iface(priv, ifidx);
1104 return -1;
1105 }
1106 return 0;
1107 }
1108
1109
1110 static int i802_bss_remove(void *priv, const char *ifname)
1111 {
1112 nl80211_remove_iface(priv, if_nametoindex(ifname));
1113 return 0;
1114 }
1115
1116
1117 static int i802_set_beacon(const char *iface, void *priv,
1118 u8 *head, size_t head_len,
1119 u8 *tail, size_t tail_len)
1120 {
1121 struct i802_driver_data *drv = priv;
1122 struct nl_msg *msg;
1123 u8 cmd = NL80211_CMD_NEW_BEACON;
1124 int ret;
1125
1126 msg = nlmsg_alloc();
1127 if (!msg)
1128 return -ENOMEM;
1129
1130 if (drv->beacon_set)
1131 cmd = NL80211_CMD_SET_BEACON;
1132
1133 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1134 0, cmd, 0);
1135 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1136 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1137 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1138 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1139
1140 if (!drv->dtim_period)
1141 drv->dtim_period = 2;
1142 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1143
1144 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1145 if (!ret)
1146 drv->beacon_set = 1;
1147 return ret;
1148 nla_put_failure:
1149 return -ENOBUFS;
1150 }
1151
1152
1153 static int i802_del_beacon(struct i802_driver_data *drv)
1154 {
1155 struct nl_msg *msg;
1156
1157 msg = nlmsg_alloc();
1158 if (!msg)
1159 return -ENOMEM;
1160
1161 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1162 0, NL80211_CMD_DEL_BEACON, 0);
1163 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1164
1165 return send_and_recv_msgs(drv, msg, NULL, NULL);
1166 nla_put_failure:
1167 return -ENOBUFS;
1168 }
1169
1170
1171 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1172 {
1173 struct i802_driver_data *drv = priv;
1174
1175 /*
1176 * FIXME: This needs to be per interface (BSS)
1177 */
1178 drv->ieee802_1x_active = enabled;
1179 return 0;
1180 }
1181
1182
1183 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1184 {
1185 struct i802_driver_data *drv = priv;
1186 struct iwreq iwr;
1187
1188 memset(&iwr, 0, sizeof(iwr));
1189
1190 os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1191 iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1192 iwr.u.param.value = enabled;
1193
1194 ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1195
1196 /* ignore errors, the kernel/driver might not care */
1197 return 0;
1198 }
1199
1200
1201 static int i802_set_internal_bridge(void *priv, int value)
1202 {
1203 return -1;
1204 }
1205
1206
1207 static int i802_set_beacon_int(void *priv, int value)
1208 {
1209 struct i802_driver_data *drv = priv;
1210 struct nl_msg *msg;
1211
1212 drv->beacon_int = value;
1213
1214 if (!drv->beacon_set)
1215 return 0;
1216
1217 msg = nlmsg_alloc();
1218 if (!msg)
1219 return -ENOMEM;
1220
1221 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1222 0, NL80211_CMD_SET_BEACON, 0);
1223 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1224
1225 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1226
1227 return send_and_recv_msgs(drv, msg, NULL, NULL);
1228 nla_put_failure:
1229 return -ENOBUFS;
1230 }
1231
1232
1233 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1234 {
1235 struct i802_driver_data *drv = priv;
1236 struct nl_msg *msg;
1237
1238 msg = nlmsg_alloc();
1239 if (!msg)
1240 return -ENOMEM;
1241
1242 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1243 0, NL80211_CMD_SET_BEACON, 0);
1244 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1245
1246 drv->dtim_period = value;
1247 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1248
1249 return send_and_recv_msgs(drv, msg, NULL, NULL);
1250 nla_put_failure:
1251 return -ENOBUFS;
1252 }
1253
1254
1255 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1256 {
1257 struct i802_driver_data *drv = priv;
1258 struct nl_msg *msg;
1259
1260 msg = nlmsg_alloc();
1261 if (!msg)
1262 return -ENOMEM;
1263
1264 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1265 NL80211_CMD_SET_BSS, 0);
1266
1267 if (cts >= 0)
1268 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1269 if (preamble >= 0)
1270 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1271 if (slot >= 0)
1272 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1273
1274 /* TODO: multi-BSS support */
1275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1276
1277 return send_and_recv_msgs(drv, msg, NULL, NULL);
1278 nla_put_failure:
1279 return -ENOBUFS;
1280 }
1281
1282
1283 static int i802_set_cts_protect(void *priv, int value)
1284 {
1285 return i802_set_bss(priv, value, -1, -1);
1286 }
1287
1288
1289 static int i802_set_preamble(void *priv, int value)
1290 {
1291 return i802_set_bss(priv, -1, value, -1);
1292 }
1293
1294
1295 static int i802_set_short_slot_time(void *priv, int value)
1296 {
1297 return i802_set_bss(priv, -1, -1, value);
1298 }
1299
1300
1301 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1302 {
1303 switch (type) {
1304 case HOSTAPD_IF_VLAN:
1305 return NL80211_IFTYPE_AP_VLAN;
1306 case HOSTAPD_IF_WDS:
1307 return NL80211_IFTYPE_WDS;
1308 }
1309 return -1;
1310 }
1311
1312
1313 static int i802_if_add(const char *iface, void *priv,
1314 enum hostapd_driver_if_type type, char *ifname,
1315 const u8 *addr)
1316 {
1317 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1318 return -1;
1319 return 0;
1320 }
1321
1322
1323 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1324 char *ifname, const u8 *addr)
1325 {
1326 /* unused at the moment */
1327 return -1;
1328 }
1329
1330
1331 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1332 const char *ifname, const u8 *addr)
1333 {
1334 nl80211_remove_iface(priv, if_nametoindex(ifname));
1335 return 0;
1336 }
1337
1338
1339 struct phy_info_arg {
1340 u16 *num_modes;
1341 struct hostapd_hw_modes *modes;
1342 };
1343
1344 static int phy_info_handler(struct nl_msg *msg, void *arg)
1345 {
1346 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1347 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1348 struct phy_info_arg *phy_info = arg;
1349
1350 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1351
1352 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1353 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1354 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1355 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1356 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1357 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1358 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1359 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1360 };
1361
1362 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1363 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1364 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1365 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1366 };
1367
1368 struct nlattr *nl_band;
1369 struct nlattr *nl_freq;
1370 struct nlattr *nl_rate;
1371 int rem_band, rem_freq, rem_rate;
1372 struct hostapd_hw_modes *mode;
1373 int idx, mode_is_set;
1374
1375 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1376 genlmsg_attrlen(gnlh, 0), NULL);
1377
1378 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1379 return NL_SKIP;
1380
1381 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1382 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1383 if (!mode)
1384 return NL_SKIP;
1385 phy_info->modes = mode;
1386
1387 mode_is_set = 0;
1388
1389 mode = &phy_info->modes[*(phy_info->num_modes)];
1390 memset(mode, 0, sizeof(*mode));
1391 *(phy_info->num_modes) += 1;
1392
1393 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1394 nla_len(nl_band), NULL);
1395
1396 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
1397 mode->ht_capab = nla_get_u16(
1398 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
1399 }
1400
1401 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1402 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1403 nla_len(nl_freq), freq_policy);
1404 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1405 continue;
1406 mode->num_channels++;
1407 }
1408
1409 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1410 if (!mode->channels)
1411 return NL_SKIP;
1412
1413 idx = 0;
1414
1415 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1416 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1417 nla_len(nl_freq), freq_policy);
1418 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1419 continue;
1420
1421 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1422 mode->channels[idx].flag = 0;
1423
1424 if (!mode_is_set) {
1425 /* crude heuristic */
1426 if (mode->channels[idx].freq < 4000)
1427 mode->mode = HOSTAPD_MODE_IEEE80211B;
1428 else
1429 mode->mode = HOSTAPD_MODE_IEEE80211A;
1430 mode_is_set = 1;
1431 }
1432
1433 /* crude heuristic */
1434 if (mode->channels[idx].freq < 4000)
1435 if (mode->channels[idx].freq == 2484)
1436 mode->channels[idx].chan = 14;
1437 else
1438 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1439 else
1440 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1441
1442 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1443 mode->channels[idx].flag |=
1444 HOSTAPD_CHAN_DISABLED;
1445 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1446 mode->channels[idx].flag |=
1447 HOSTAPD_CHAN_PASSIVE_SCAN;
1448 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1449 mode->channels[idx].flag |=
1450 HOSTAPD_CHAN_NO_IBSS;
1451 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1452 mode->channels[idx].flag |=
1453 HOSTAPD_CHAN_RADAR;
1454
1455 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1456 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1457 mode->channels[idx].max_tx_power =
1458 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1459
1460 idx++;
1461 }
1462
1463 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1464 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1465 nla_len(nl_rate), rate_policy);
1466 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1467 continue;
1468 mode->num_rates++;
1469 }
1470
1471 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1472 if (!mode->rates)
1473 return NL_SKIP;
1474
1475 idx = 0;
1476
1477 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1478 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1479 nla_len(nl_rate), rate_policy);
1480 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1481 continue;
1482 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1483
1484 /* crude heuristic */
1485 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1486 mode->rates[idx].rate > 200)
1487 mode->mode = HOSTAPD_MODE_IEEE80211G;
1488
1489 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1490 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1491
1492 idx++;
1493 }
1494 }
1495
1496 return NL_SKIP;
1497 }
1498
1499 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1500 u16 *num_modes)
1501 {
1502 u16 m;
1503 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1504 int i, mode11g_idx = -1;
1505
1506 /* If only 802.11g mode is included, use it to construct matching
1507 * 802.11b mode data. */
1508
1509 for (m = 0; m < *num_modes; m++) {
1510 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1511 return modes; /* 802.11b already included */
1512 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1513 mode11g_idx = m;
1514 }
1515
1516 if (mode11g_idx < 0)
1517 return modes; /* 2.4 GHz band not supported at all */
1518
1519 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1520 if (nmodes == NULL)
1521 return modes; /* Could not add 802.11b mode */
1522
1523 mode = &nmodes[*num_modes];
1524 os_memset(mode, 0, sizeof(*mode));
1525 (*num_modes)++;
1526 modes = nmodes;
1527
1528 mode->mode = HOSTAPD_MODE_IEEE80211B;
1529
1530 mode11g = &modes[mode11g_idx];
1531 mode->num_channels = mode11g->num_channels;
1532 mode->channels = os_malloc(mode11g->num_channels *
1533 sizeof(struct hostapd_channel_data));
1534 if (mode->channels == NULL) {
1535 (*num_modes)--;
1536 return modes; /* Could not add 802.11b mode */
1537 }
1538 os_memcpy(mode->channels, mode11g->channels,
1539 mode11g->num_channels * sizeof(struct hostapd_channel_data));
1540
1541 mode->num_rates = 0;
1542 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1543 if (mode->rates == NULL) {
1544 os_free(mode->channels);
1545 (*num_modes)--;
1546 return modes; /* Could not add 802.11b mode */
1547 }
1548
1549 for (i = 0; i < mode11g->num_rates; i++) {
1550 if (mode11g->rates[i].rate > 110 ||
1551 mode11g->rates[i].flags &
1552 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1553 continue;
1554 mode->rates[mode->num_rates] = mode11g->rates[i];
1555 mode->num_rates++;
1556 if (mode->num_rates == 4)
1557 break;
1558 }
1559
1560 if (mode->num_rates == 0) {
1561 os_free(mode->channels);
1562 os_free(mode->rates);
1563 (*num_modes)--;
1564 return modes; /* No 802.11b rates */
1565 }
1566
1567 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1568 "information");
1569
1570 return modes;
1571 }
1572
1573 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1574 u16 *num_modes,
1575 u16 *flags)
1576 {
1577 struct i802_driver_data *drv = priv;
1578 struct nl_msg *msg;
1579 struct phy_info_arg result = {
1580 .num_modes = num_modes,
1581 .modes = NULL,
1582 };
1583
1584 *num_modes = 0;
1585 *flags = 0;
1586
1587 msg = nlmsg_alloc();
1588 if (!msg)
1589 return NULL;
1590
1591 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1592 0, NL80211_CMD_GET_WIPHY, 0);
1593
1594 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1595
1596 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1597 return i802_add_11b(result.modes, num_modes);
1598 nla_put_failure:
1599 return NULL;
1600 }
1601
1602
1603 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1604 const char *ifname, int vlan_id)
1605 {
1606 struct i802_driver_data *drv = priv;
1607 struct nl_msg *msg;
1608
1609 msg = nlmsg_alloc();
1610 if (!msg)
1611 return -ENOMEM;
1612
1613 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1614 0, NL80211_CMD_SET_STATION, 0);
1615
1616 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1617 if_nametoindex(drv->iface));
1618 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1619 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1620 if_nametoindex(ifname));
1621
1622 return send_and_recv_msgs(drv, msg, NULL, NULL);
1623 nla_put_failure:
1624 return -ENOBUFS;
1625 }
1626
1627
1628 static int i802_set_country(void *priv, const char *country)
1629 {
1630 struct i802_driver_data *drv = priv;
1631 struct nl_msg *msg;
1632 char alpha2[3];
1633
1634 msg = nlmsg_alloc();
1635 if (!msg)
1636 return -ENOMEM;
1637
1638 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1639 0, NL80211_CMD_REQ_SET_REG, 0);
1640
1641 alpha2[0] = country[0];
1642 alpha2[1] = country[1];
1643 alpha2[2] = '\0';
1644 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1645
1646 return send_and_recv_msgs(drv, msg, NULL, NULL);
1647 nla_put_failure:
1648 return -ENOBUFS;
1649 }
1650
1651
1652 static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
1653 {
1654 struct sta_info *sta;
1655
1656 sta = ap_get_sta(hapd, ta);
1657 if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1658 printf("Data/PS-poll frame from not associated STA "
1659 MACSTR "\n", MAC2STR(ta));
1660 if (sta && (sta->flags & WLAN_STA_AUTH))
1661 hostapd_sta_disassoc(
1662 hapd, ta,
1663 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1664 else
1665 hostapd_sta_deauth(
1666 hapd, ta,
1667 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1668 }
1669 }
1670
1671
1672 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1673 int ok)
1674 {
1675 struct ieee80211_hdr *hdr;
1676 u16 fc, type, stype;
1677 struct sta_info *sta;
1678
1679 hdr = (struct ieee80211_hdr *) buf;
1680 fc = le_to_host16(hdr->frame_control);
1681
1682 type = WLAN_FC_GET_TYPE(fc);
1683 stype = WLAN_FC_GET_STYPE(fc);
1684
1685 switch (type) {
1686 case WLAN_FC_TYPE_MGMT:
1687 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1688 ok ? "ACK" : "fail");
1689 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1690 break;
1691 case WLAN_FC_TYPE_CTRL:
1692 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1693 ok ? "ACK" : "fail");
1694 break;
1695 case WLAN_FC_TYPE_DATA:
1696 sta = ap_get_sta(hapd, hdr->addr1);
1697 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1698 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1699 "activity poll", MAC2STR(sta->addr),
1700 ok ? "ACKed" : "did not ACK");
1701 if (ok)
1702 sta->flags &= ~WLAN_STA_PENDING_POLL;
1703 }
1704 if (sta)
1705 ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1706 break;
1707 default:
1708 printf("unknown TX callback frame type %d\n", type);
1709 break;
1710 }
1711 }
1712
1713
1714 static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
1715 struct hostapd_frame_info *hfi,
1716 enum ieee80211_msg_type msg_type)
1717 {
1718 struct ieee80211_hdr *hdr;
1719 u16 fc, type, stype;
1720 size_t data_len = len;
1721 struct hostapd_data *hapd = NULL;
1722 int broadcast_bssid = 0;
1723 size_t i;
1724 u8 *bssid;
1725
1726 /*
1727 * PS-Poll frames are 16 bytes. All other frames are
1728 * 24 bytes or longer.
1729 */
1730 if (len < 16)
1731 return;
1732
1733 hdr = (struct ieee80211_hdr *) buf;
1734 fc = le_to_host16(hdr->frame_control);
1735
1736 type = WLAN_FC_GET_TYPE(fc);
1737 stype = WLAN_FC_GET_STYPE(fc);
1738
1739 switch (type) {
1740 case WLAN_FC_TYPE_DATA:
1741 if (len < 24)
1742 return;
1743 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1744 case WLAN_FC_TODS:
1745 bssid = hdr->addr1;
1746 break;
1747 case WLAN_FC_FROMDS:
1748 bssid = hdr->addr2;
1749 break;
1750 default:
1751 /* discard */
1752 return;
1753 }
1754 break;
1755 case WLAN_FC_TYPE_CTRL:
1756 /* discard non-ps-poll frames */
1757 if (stype != WLAN_FC_STYPE_PSPOLL)
1758 return;
1759 bssid = hdr->addr1;
1760 break;
1761 case WLAN_FC_TYPE_MGMT:
1762 bssid = hdr->addr3;
1763 break;
1764 default:
1765 /* discard */
1766 return;
1767 }
1768
1769 /* find interface frame belongs to */
1770 for (i = 0; i < iface->num_bss; i++) {
1771 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1772 hapd = iface->bss[i];
1773 break;
1774 }
1775 }
1776
1777 if (hapd == NULL) {
1778 hapd = iface->bss[0];
1779
1780 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1781 bssid[2] != 0xff || bssid[3] != 0xff ||
1782 bssid[4] != 0xff || bssid[5] != 0xff) {
1783 /*
1784 * Unknown BSSID - drop frame if this is not from
1785 * passive scanning or a beacon (at least ProbeReq
1786 * frames to other APs may be allowed through RX
1787 * filtering in the wlan hw/driver)
1788 */
1789 if ((type != WLAN_FC_TYPE_MGMT ||
1790 stype != WLAN_FC_STYPE_BEACON))
1791 return;
1792 } else
1793 broadcast_bssid = 1;
1794 }
1795
1796 switch (msg_type) {
1797 case ieee80211_msg_normal:
1798 /* continue processing */
1799 break;
1800 case ieee80211_msg_tx_callback_ack:
1801 handle_tx_callback(hapd, buf, data_len, 1);
1802 return;
1803 case ieee80211_msg_tx_callback_fail:
1804 handle_tx_callback(hapd, buf, data_len, 0);
1805 return;
1806 }
1807
1808 switch (type) {
1809 case WLAN_FC_TYPE_MGMT:
1810 if (stype != WLAN_FC_STYPE_BEACON &&
1811 stype != WLAN_FC_STYPE_PROBE_REQ)
1812 wpa_printf(MSG_MSGDUMP, "MGMT");
1813 if (broadcast_bssid) {
1814 for (i = 0; i < iface->num_bss; i++)
1815 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1816 stype, hfi);
1817 } else
1818 ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1819 break;
1820 case WLAN_FC_TYPE_CTRL:
1821 /* can only get here with PS-Poll frames */
1822 wpa_printf(MSG_DEBUG, "CTRL");
1823 handle_unknown_sta(hapd, hdr->addr2);
1824 break;
1825 case WLAN_FC_TYPE_DATA:
1826 handle_unknown_sta(hapd, hdr->addr2);
1827 break;
1828 }
1829 }
1830
1831
1832 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1833 {
1834 struct i802_driver_data *drv = eloop_ctx;
1835 struct hostapd_data *hapd = drv->hapd;
1836 struct sockaddr_ll lladdr;
1837 unsigned char buf[3000];
1838 int len;
1839 socklen_t fromlen = sizeof(lladdr);
1840
1841 len = recvfrom(sock, buf, sizeof(buf), 0,
1842 (struct sockaddr *)&lladdr, &fromlen);
1843 if (len < 0) {
1844 perror("recv");
1845 return;
1846 }
1847
1848 if (have_ifidx(drv, lladdr.sll_ifindex))
1849 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1850 }
1851
1852
1853 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1854 {
1855 struct i802_driver_data *drv = eloop_ctx;
1856 int len;
1857 unsigned char buf[3000];
1858 struct hostapd_data *hapd = drv->hapd;
1859 struct ieee80211_radiotap_iterator iter;
1860 int ret;
1861 struct hostapd_frame_info hfi;
1862 int injected = 0, failed = 0, msg_type, rxflags = 0;
1863
1864 len = recv(sock, buf, sizeof(buf), 0);
1865 if (len < 0) {
1866 perror("recv");
1867 return;
1868 }
1869
1870 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1871 printf("received invalid radiotap frame\n");
1872 return;
1873 }
1874
1875 memset(&hfi, 0, sizeof(hfi));
1876
1877 while (1) {
1878 ret = ieee80211_radiotap_iterator_next(&iter);
1879 if (ret == -ENOENT)
1880 break;
1881 if (ret) {
1882 printf("received invalid radiotap frame (%d)\n", ret);
1883 return;
1884 }
1885 switch (iter.this_arg_index) {
1886 case IEEE80211_RADIOTAP_FLAGS:
1887 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1888 len -= 4;
1889 break;
1890 case IEEE80211_RADIOTAP_RX_FLAGS:
1891 rxflags = 1;
1892 break;
1893 case IEEE80211_RADIOTAP_TX_FLAGS:
1894 injected = 1;
1895 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1896 IEEE80211_RADIOTAP_F_TX_FAIL;
1897 break;
1898 case IEEE80211_RADIOTAP_DATA_RETRIES:
1899 break;
1900 case IEEE80211_RADIOTAP_CHANNEL:
1901 /* TODO convert from freq/flags to channel number
1902 hfi.channel = XXX;
1903 hfi.phytype = XXX;
1904 */
1905 break;
1906 case IEEE80211_RADIOTAP_RATE:
1907 hfi.datarate = *iter.this_arg * 5;
1908 break;
1909 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1910 hfi.ssi_signal = *iter.this_arg;
1911 break;
1912 }
1913 }
1914
1915 if (rxflags && injected)
1916 return;
1917
1918 if (!injected)
1919 msg_type = ieee80211_msg_normal;
1920 else if (failed)
1921 msg_type = ieee80211_msg_tx_callback_fail;
1922 else
1923 msg_type = ieee80211_msg_tx_callback_ack;
1924
1925 handle_frame(hapd->iface, buf + iter.max_length,
1926 len - iter.max_length, &hfi, msg_type);
1927 }
1928
1929
1930 /*
1931 * we post-process the filter code later and rewrite
1932 * this to the offset to the last instruction
1933 */
1934 #define PASS 0xFF
1935 #define FAIL 0xFE
1936
1937 static struct sock_filter msock_filter_insns[] = {
1938 /*
1939 * do a little-endian load of the radiotap length field
1940 */
1941 /* load lower byte into A */
1942 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
1943 /* put it into X (== index register) */
1944 BPF_STMT(BPF_MISC| BPF_TAX, 0),
1945 /* load upper byte into A */
1946 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
1947 /* left-shift it by 8 */
1948 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
1949 /* or with X */
1950 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
1951 /* put result into X */
1952 BPF_STMT(BPF_MISC| BPF_TAX, 0),
1953
1954 /*
1955 * Allow management frames through, this also gives us those
1956 * management frames that we sent ourselves with status
1957 */
1958 /* load the lower byte of the IEEE 802.11 frame control field */
1959 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1960 /* mask off frame type and version */
1961 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
1962 /* accept frame if it's both 0, fall through otherwise */
1963 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
1964
1965 /*
1966 * TODO: add a bit to radiotap RX flags that indicates
1967 * that the sending station is not associated, then
1968 * add a filter here that filters on our DA and that flag
1969 * to allow us to deauth frames to that bad station.
1970 *
1971 * Not a regression -- we didn't do it before either.
1972 */
1973
1974 #if 0
1975 /*
1976 * drop non-data frames, WDS frames
1977 */
1978 /* load the lower byte of the frame control field */
1979 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1980 /* mask off QoS bit */
1981 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
1982 /* drop non-data frames */
1983 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
1984 /* load the upper byte of the frame control field */
1985 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1986 /* mask off toDS/fromDS */
1987 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
1988 /* drop WDS frames */
1989 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
1990 #endif
1991
1992 /*
1993 * add header length to index
1994 */
1995 /* load the lower byte of the frame control field */
1996 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1997 /* mask off QoS bit */
1998 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
1999 /* right shift it by 6 to give 0 or 2 */
2000 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2001 /* add data frame header length */
2002 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2003 /* add index, was start of 802.11 header */
2004 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2005 /* move to index, now start of LL header */
2006 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2007
2008 /*
2009 * Accept empty data frames, we use those for
2010 * polling activity.
2011 */
2012 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2013 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2014
2015 /*
2016 * Accept EAPOL frames
2017 */
2018 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2019 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2020 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2021 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2022
2023 /* keep these last two statements or change the code below */
2024 /* return 0 == "DROP" */
2025 BPF_STMT(BPF_RET | BPF_K, 0),
2026 /* return ~0 == "keep all" */
2027 BPF_STMT(BPF_RET | BPF_K, ~0),
2028 };
2029
2030 static struct sock_fprog msock_filter = {
2031 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2032 .filter = msock_filter_insns,
2033 };
2034
2035
2036 static int add_monitor_filter(int s)
2037 {
2038 int idx;
2039
2040 /* rewrite all PASS/FAIL jump offsets */
2041 for (idx = 0; idx < msock_filter.len; idx++) {
2042 struct sock_filter *insn = &msock_filter_insns[idx];
2043
2044 if (BPF_CLASS(insn->code) == BPF_JMP) {
2045 if (insn->code == (BPF_JMP|BPF_JA)) {
2046 if (insn->k == PASS)
2047 insn->k = msock_filter.len - idx - 2;
2048 else if (insn->k == FAIL)
2049 insn->k = msock_filter.len - idx - 3;
2050 }
2051
2052 if (insn->jt == PASS)
2053 insn->jt = msock_filter.len - idx - 2;
2054 else if (insn->jt == FAIL)
2055 insn->jt = msock_filter.len - idx - 3;
2056
2057 if (insn->jf == PASS)
2058 insn->jf = msock_filter.len - idx - 2;
2059 else if (insn->jf == FAIL)
2060 insn->jf = msock_filter.len - idx - 3;
2061 }
2062 }
2063
2064 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2065 &msock_filter, sizeof(msock_filter))) {
2066 perror("SO_ATTACH_FILTER");
2067 return -1;
2068 }
2069
2070 return 0;
2071 }
2072
2073
2074 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
2075 {
2076 char buf[IFNAMSIZ];
2077 struct sockaddr_ll ll;
2078 int optval;
2079 socklen_t optlen;
2080
2081 snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
2082 buf[IFNAMSIZ - 1] = '\0';
2083
2084 drv->monitor_ifidx =
2085 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2086
2087 if (drv->monitor_ifidx < 0)
2088 return -1;
2089
2090 if (hostapd_set_iface_flags(drv, buf, 1))
2091 goto error;
2092
2093 memset(&ll, 0, sizeof(ll));
2094 ll.sll_family = AF_PACKET;
2095 ll.sll_ifindex = drv->monitor_ifidx;
2096 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2097 if (drv->monitor_sock < 0) {
2098 perror("socket[PF_PACKET,SOCK_RAW]");
2099 goto error;
2100 }
2101
2102 if (add_monitor_filter(drv->monitor_sock)) {
2103 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2104 "interface; do filtering in user space");
2105 /* This works, but will cost in performance. */
2106 }
2107
2108 if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
2109 sizeof(ll)) < 0) {
2110 perror("monitor socket bind");
2111 goto error;
2112 }
2113
2114 optlen = sizeof(optval);
2115 optval = 20;
2116 if (setsockopt
2117 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2118 perror("Failed to set socket priority");
2119 goto error;
2120 }
2121
2122 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2123 drv, NULL)) {
2124 printf("Could not register monitor read socket\n");
2125 goto error;
2126 }
2127
2128 return 0;
2129 error:
2130 nl80211_remove_iface(drv, drv->monitor_ifidx);
2131 return -1;
2132 }
2133
2134
2135 static int nl80211_set_master_mode(struct i802_driver_data *drv,
2136 const char *ifname)
2137 {
2138 struct nl_msg *msg;
2139 int ret = -ENOBUFS;
2140
2141 msg = nlmsg_alloc();
2142 if (!msg)
2143 return -ENOMEM;
2144
2145 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2146 0, NL80211_CMD_SET_INTERFACE, 0);
2147 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2148 if_nametoindex(ifname));
2149 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
2150
2151 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2152 if (!ret)
2153 return 0;
2154 nla_put_failure:
2155 wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
2156 "mode.", ifname);
2157 return ret;
2158 }
2159
2160
2161 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
2162 {
2163 struct ifreq ifr;
2164 struct sockaddr_ll addr;
2165
2166 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2167 if (drv->ioctl_sock < 0) {
2168 perror("socket[PF_INET,SOCK_DGRAM]");
2169 return -1;
2170 }
2171
2172 /* start listening for EAPOL on the default AP interface */
2173 add_ifidx(drv, if_nametoindex(drv->iface));
2174
2175 if (hostapd_set_iface_flags(drv, drv->iface, 0))
2176 return -1;
2177
2178 if (bssid) {
2179 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2180 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2181 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2182
2183 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2184 perror("ioctl(SIOCSIFHWADDR)");
2185 return -1;
2186 }
2187 }
2188
2189 /*
2190 * initialise generic netlink and nl80211
2191 */
2192 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2193 if (!drv->nl_cb) {
2194 printf("Failed to allocate netlink callbacks.\n");
2195 return -1;
2196 }
2197
2198 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2199 if (!drv->nl_handle) {
2200 printf("Failed to allocate netlink handle.\n");
2201 return -1;
2202 }
2203
2204 if (genl_connect(drv->nl_handle)) {
2205 printf("Failed to connect to generic netlink.\n");
2206 return -1;
2207 }
2208
2209 #ifdef CONFIG_LIBNL20
2210 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
2211 printf("Failed to allocate generic netlink cache.\n");
2212 return -1;
2213 }
2214 #else /* CONFIG_LIBNL20 */
2215 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2216 if (!drv->nl_cache) {
2217 printf("Failed to allocate generic netlink cache.\n");
2218 return -1;
2219 }
2220 #endif /* CONFIG_LIBNL20 */
2221
2222 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2223 if (!drv->nl80211) {
2224 printf("nl80211 not found.\n");
2225 return -1;
2226 }
2227
2228 /* Initialise a monitor interface */
2229 if (nl80211_create_monitor_interface(drv))
2230 return -1;
2231
2232 if (nl80211_set_master_mode(drv, drv->iface))
2233 goto fail1;
2234
2235 if (hostapd_set_iface_flags(drv, drv->iface, 1))
2236 goto fail1;
2237
2238 memset(&addr, 0, sizeof(addr));
2239 addr.sll_family = AF_PACKET;
2240 addr.sll_ifindex = ifr.ifr_ifindex;
2241 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2242 addr.sll_ifindex);
2243
2244 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2245 if (drv->eapol_sock < 0) {
2246 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2247 goto fail1;
2248 }
2249
2250 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2251 {
2252 printf("Could not register read socket for eapol\n");
2253 return -1;
2254 }
2255
2256 memset(&ifr, 0, sizeof(ifr));
2257 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2258 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2259 perror("ioctl(SIOCGIFHWADDR)");
2260 goto fail1;
2261 }
2262
2263 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2264 printf("Invalid HW-addr family 0x%04x\n",
2265 ifr.ifr_hwaddr.sa_family);
2266 goto fail1;
2267 }
2268 memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2269
2270 return 0;
2271
2272 fail1:
2273 nl80211_remove_iface(drv, drv->monitor_ifidx);
2274 return -1;
2275 }
2276
2277
2278 static int i802_get_inact_sec(void *priv, const u8 *addr)
2279 {
2280 struct hostap_sta_driver_data data;
2281 int ret;
2282
2283 data.inactive_msec = (unsigned long) -1;
2284 ret = i802_read_sta_data(priv, &data, addr);
2285 if (ret || data.inactive_msec == (unsigned long) -1)
2286 return -1;
2287 return data.inactive_msec / 1000;
2288 }
2289
2290
2291 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2292 {
2293 #if 0
2294 /* TODO */
2295 #endif
2296 return 0;
2297 }
2298
2299
2300 static void
2301 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2302 char *custom)
2303 {
2304 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2305
2306 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2307 char *pos;
2308 u8 addr[ETH_ALEN];
2309 pos = strstr(custom, "addr=");
2310 if (pos == NULL) {
2311 wpa_printf(MSG_DEBUG,
2312 "MLME-MICHAELMICFAILURE.indication "
2313 "without sender address ignored");
2314 return;
2315 }
2316 pos += 5;
2317 if (hwaddr_aton(pos, addr) == 0) {
2318 ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2319 } else {
2320 wpa_printf(MSG_DEBUG,
2321 "MLME-MICHAELMICFAILURE.indication "
2322 "with invalid MAC address");
2323 }
2324 }
2325 }
2326
2327
2328 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2329 char *data, int len)
2330 {
2331 struct iw_event iwe_buf, *iwe = &iwe_buf;
2332 char *pos, *end, *custom, *buf;
2333
2334 pos = data;
2335 end = data + len;
2336
2337 while (pos + IW_EV_LCP_LEN <= end) {
2338 /* Event data may be unaligned, so make a local, aligned copy
2339 * before processing. */
2340 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2341 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2342 iwe->cmd, iwe->len);
2343 if (iwe->len <= IW_EV_LCP_LEN)
2344 return;
2345
2346 custom = pos + IW_EV_POINT_LEN;
2347 if (drv->we_version > 18 &&
2348 (iwe->cmd == IWEVMICHAELMICFAILURE ||
2349 iwe->cmd == IWEVCUSTOM)) {
2350 /* WE-19 removed the pointer from struct iw_point */
2351 char *dpos = (char *) &iwe_buf.u.data.length;
2352 int dlen = dpos - (char *) &iwe_buf;
2353 memcpy(dpos, pos + IW_EV_LCP_LEN,
2354 sizeof(struct iw_event) - dlen);
2355 } else {
2356 memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2357 custom += IW_EV_POINT_OFF;
2358 }
2359
2360 switch (iwe->cmd) {
2361 case IWEVCUSTOM:
2362 if (custom + iwe->u.data.length > end)
2363 return;
2364 buf = malloc(iwe->u.data.length + 1);
2365 if (buf == NULL)
2366 return;
2367 memcpy(buf, custom, iwe->u.data.length);
2368 buf[iwe->u.data.length] = '\0';
2369 hostapd_wireless_event_wireless_custom(drv, buf);
2370 free(buf);
2371 break;
2372 }
2373
2374 pos += iwe->len;
2375 }
2376 }
2377
2378
2379 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2380 struct nlmsghdr *h, int len)
2381 {
2382 struct ifinfomsg *ifi;
2383 int attrlen, _nlmsg_len, rta_len;
2384 struct rtattr *attr;
2385
2386 if (len < (int) sizeof(*ifi))
2387 return;
2388
2389 ifi = NLMSG_DATA(h);
2390
2391 /* TODO: use ifi->ifi_index to filter out wireless events from other
2392 * interfaces */
2393
2394 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2395
2396 attrlen = h->nlmsg_len - _nlmsg_len;
2397 if (attrlen < 0)
2398 return;
2399
2400 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
2401
2402 rta_len = RTA_ALIGN(sizeof(struct rtattr));
2403 while (RTA_OK(attr, attrlen)) {
2404 if (attr->rta_type == IFLA_WIRELESS) {
2405 hostapd_wireless_event_wireless(
2406 drv, ((char *) attr) + rta_len,
2407 attr->rta_len - rta_len);
2408 }
2409 attr = RTA_NEXT(attr, attrlen);
2410 }
2411 }
2412
2413
2414 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2415 void *sock_ctx)
2416 {
2417 char buf[256];
2418 int left;
2419 struct sockaddr_nl from;
2420 socklen_t fromlen;
2421 struct nlmsghdr *h;
2422 struct i802_driver_data *drv = eloop_ctx;
2423
2424 fromlen = sizeof(from);
2425 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2426 (struct sockaddr *) &from, &fromlen);
2427 if (left < 0) {
2428 if (errno != EINTR && errno != EAGAIN)
2429 perror("recvfrom(netlink)");
2430 return;
2431 }
2432
2433 h = (struct nlmsghdr *) buf;
2434 while (left >= (int) sizeof(*h)) {
2435 int len, plen;
2436
2437 len = h->nlmsg_len;
2438 plen = len - sizeof(*h);
2439 if (len > left || plen < 0) {
2440 printf("Malformed netlink message: "
2441 "len=%d left=%d plen=%d\n",
2442 len, left, plen);
2443 break;
2444 }
2445
2446 switch (h->nlmsg_type) {
2447 case RTM_NEWLINK:
2448 hostapd_wireless_event_rtm_newlink(drv, h, plen);
2449 break;
2450 }
2451
2452 len = NLMSG_ALIGN(len);
2453 left -= len;
2454 h = (struct nlmsghdr *) ((char *) h + len);
2455 }
2456
2457 if (left > 0) {
2458 printf("%d extra bytes in the end of netlink message\n", left);
2459 }
2460 }
2461
2462
2463 static int hostap_get_we_version(struct i802_driver_data *drv)
2464 {
2465 struct iw_range *range;
2466 struct iwreq iwr;
2467 int minlen;
2468 size_t buflen;
2469
2470 drv->we_version = 0;
2471
2472 /*
2473 * Use larger buffer than struct iw_range in order to allow the
2474 * structure to grow in the future.
2475 */
2476 buflen = sizeof(struct iw_range) + 500;
2477 range = os_zalloc(buflen);
2478 if (range == NULL)
2479 return -1;
2480
2481 memset(&iwr, 0, sizeof(iwr));
2482 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2483 iwr.u.data.pointer = (caddr_t) range;
2484 iwr.u.data.length = buflen;
2485
2486 minlen = ((char *) &range->enc_capa) - (char *) range +
2487 sizeof(range->enc_capa);
2488
2489 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2490 perror("ioctl[SIOCGIWRANGE]");
2491 free(range);
2492 return -1;
2493 } else if (iwr.u.data.length >= minlen &&
2494 range->we_version_compiled >= 18) {
2495 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2496 "WE(source)=%d enc_capa=0x%x",
2497 range->we_version_compiled,
2498 range->we_version_source,
2499 range->enc_capa);
2500 drv->we_version = range->we_version_compiled;
2501 }
2502
2503 free(range);
2504 return 0;
2505 }
2506
2507
2508 static int i802_wireless_event_init(void *priv)
2509 {
2510 struct i802_driver_data *drv = priv;
2511 int s;
2512 struct sockaddr_nl local;
2513
2514 hostap_get_we_version(drv);
2515
2516 drv->wext_sock = -1;
2517
2518 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2519 if (s < 0) {
2520 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2521 return -1;
2522 }
2523
2524 memset(&local, 0, sizeof(local));
2525 local.nl_family = AF_NETLINK;
2526 local.nl_groups = RTMGRP_LINK;
2527 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2528 perror("bind(netlink)");
2529 close(s);
2530 return -1;
2531 }
2532
2533 eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2534 NULL);
2535 drv->wext_sock = s;
2536
2537 return 0;
2538 }
2539
2540
2541 static void i802_wireless_event_deinit(void *priv)
2542 {
2543 struct i802_driver_data *drv = priv;
2544 if (drv->wext_sock < 0)
2545 return;
2546 eloop_unregister_read_sock(drv->wext_sock);
2547 close(drv->wext_sock);
2548 }
2549
2550
2551 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2552 {
2553 struct i802_driver_data *drv = priv;
2554 struct ieee80211_mgmt mgmt;
2555
2556 memset(&mgmt, 0, sizeof(mgmt));
2557 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2558 WLAN_FC_STYPE_DEAUTH);
2559 memcpy(mgmt.da, addr, ETH_ALEN);
2560 memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2561 memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2562 mgmt.u.deauth.reason_code = host_to_le16(reason);
2563 return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2564 sizeof(mgmt.u.deauth), 0);
2565 }
2566
2567
2568 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2569 {
2570 struct i802_driver_data *drv = priv;
2571 struct ieee80211_mgmt mgmt;
2572
2573 memset(&mgmt, 0, sizeof(mgmt));
2574 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2575 WLAN_FC_STYPE_DISASSOC);
2576 memcpy(mgmt.da, addr, ETH_ALEN);
2577 memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2578 memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2579 mgmt.u.disassoc.reason_code = host_to_le16(reason);
2580 return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2581 sizeof(mgmt.u.disassoc), 0);
2582 }
2583
2584
2585 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2586 {
2587 struct i802_driver_data *drv;
2588
2589 drv = os_zalloc(sizeof(struct i802_driver_data));
2590 if (drv == NULL) {
2591 printf("Could not allocate memory for i802 driver data\n");
2592 return NULL;
2593 }
2594
2595 drv->hapd = hapd;
2596 memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2597
2598 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2599 drv->if_indices = drv->default_if_indices;
2600 drv->bridge = if_nametoindex(hapd->conf->bridge);
2601
2602 if (i802_init_sockets(drv, bssid))
2603 goto failed;
2604
2605 return drv;
2606
2607 failed:
2608 free(drv);
2609 return NULL;
2610 }
2611
2612
2613 static void *i802_init(struct hostapd_data *hapd)
2614 {
2615 return i802_init_bssid(hapd, NULL);
2616 }
2617
2618
2619 static void i802_deinit(void *priv)
2620 {
2621 struct i802_driver_data *drv = priv;
2622
2623 if (drv->last_freq_ht) {
2624 /* Clear HT flags from the driver */
2625 struct hostapd_freq_params freq;
2626 os_memset(&freq, 0, sizeof(freq));
2627 freq.freq = drv->last_freq;
2628 i802_set_freq2(priv, &freq);
2629 }
2630
2631 i802_del_beacon(drv);
2632
2633 /* remove monitor interface */
2634 nl80211_remove_iface(drv, drv->monitor_ifidx);
2635
2636 (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2637
2638 if (drv->monitor_sock >= 0) {
2639 eloop_unregister_read_sock(drv->monitor_sock);
2640 close(drv->monitor_sock);
2641 }
2642 if (drv->ioctl_sock >= 0)
2643 close(drv->ioctl_sock);
2644 if (drv->eapol_sock >= 0) {
2645 eloop_unregister_read_sock(drv->eapol_sock);
2646 close(drv->eapol_sock);
2647 }
2648
2649 genl_family_put(drv->nl80211);
2650 nl_cache_free(drv->nl_cache);
2651 nl_handle_destroy(drv->nl_handle);
2652 nl_cb_put(drv->nl_cb);
2653
2654 if (drv->if_indices != drv->default_if_indices)
2655 free(drv->if_indices);
2656
2657 free(drv);
2658 }
2659
2660
2661 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2662 .name = "nl80211",
2663 .init = i802_init,
2664 .init_bssid = i802_init_bssid,
2665 .deinit = i802_deinit,
2666 .wireless_event_init = i802_wireless_event_init,
2667 .wireless_event_deinit = i802_wireless_event_deinit,
2668 .set_ieee8021x = i802_set_ieee8021x,
2669 .set_privacy = i802_set_privacy,
2670 .set_encryption = i802_set_encryption,
2671 .get_seqnum = i802_get_seqnum,
2672 .flush = i802_flush,
2673 .read_sta_data = i802_read_sta_data,
2674 .send_eapol = i802_send_eapol,
2675 .sta_set_flags = i802_sta_set_flags,
2676 .sta_deauth = i802_sta_deauth,
2677 .sta_disassoc = i802_sta_disassoc,
2678 .sta_remove = i802_sta_remove,
2679 .send_mgmt_frame = i802_send_mgmt_frame,
2680 .sta_add2 = i802_sta_add2,
2681 .get_inact_sec = i802_get_inact_sec,
2682 .sta_clear_stats = i802_sta_clear_stats,
2683 .set_freq2 = i802_set_freq2,
2684 .set_rts = i802_set_rts,
2685 .get_rts = i802_get_rts,
2686 .set_frag = i802_set_frag,
2687 .get_frag = i802_get_frag,
2688 .set_retry = i802_set_retry,
2689 .get_retry = i802_get_retry,
2690 .set_rate_sets = i802_set_rate_sets,
2691 .set_regulatory_domain = i802_set_regulatory_domain,
2692 .set_beacon = i802_set_beacon,
2693 .set_internal_bridge = i802_set_internal_bridge,
2694 .set_beacon_int = i802_set_beacon_int,
2695 .set_dtim_period = i802_set_dtim_period,
2696 .set_cts_protect = i802_set_cts_protect,
2697 .set_preamble = i802_set_preamble,
2698 .set_short_slot_time = i802_set_short_slot_time,
2699 .set_tx_queue_params = i802_set_tx_queue_params,
2700 .bss_add = i802_bss_add,
2701 .bss_remove = i802_bss_remove,
2702 .if_add = i802_if_add,
2703 .if_update = i802_if_update,
2704 .if_remove = i802_if_remove,
2705 .get_hw_feature_data = i802_get_hw_feature_data,
2706 .set_sta_vlan = i802_set_sta_vlan,
2707 .set_country = i802_set_country,
2708 };
DragonFly BSD