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Remove unneeded CONFIG_EAP comments
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
CommitLineData
3f5285e8 1/*
c5121837 2 * Driver interaction with Linux nl80211/cfg80211
8d923a4a 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
072ad14c
JM		 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>
58f6fbe0 7 * Copyright (c) 2009-2010, Atheros Communications
3f5285e8
JM		 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>
37b7d082 21#include <net/if.h>
3f5285e8
JM		 22#include <netlink/genl/genl.h>
23#include <netlink/genl/family.h>
24#include <netlink/genl/ctrl.h>
1b648c7e
JM		 25#include <netpacket/packet.h>
26#include <linux/filter.h>
7e45830a 27#include "nl80211_copy.h"
625f587b 28
3f5285e8 29#include "common.h"
1b648c7e
JM		 30#include "eloop.h"
31#include "common/ieee802_11_defs.h"
e2d02c29 32#include "netlink.h"
34f2f814 33#include "linux_ioctl.h"
e2d02c29
JM		 34#include "radiotap.h"
35#include "radiotap_iter.h"
1b648c7e 36#include "driver.h"
0915d02c 37
c5121837
JM		 38#ifdef CONFIG_LIBNL20
39/* libnl 2.0 compatibility code */
2e8eac2d 40#define nl_handle nl_sock
c5121837
JM		 41#define nl_handle_alloc_cb nl_socket_alloc_cb
42#define nl_handle_destroy nl_socket_free
43#endif /* CONFIG_LIBNL20 */
44
c5121837 45
3f5285e8
JM		 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
c5121837
JM		 60struct i802_bss {
61 struct i802_bss *next;
b4fd6fab 62 int ifindex;
c5121837
JM		 63 unsigned int beacon_set:1;
64};
3f5285e8
JM		 65
66struct wpa_driver_nl80211_data {
67 void *ctx;
08063178 68 struct netlink_data *netlink;
c5121837 69 int ioctl_sock; /* socket for ioctl() use */
3f5285e8 70 char ifname[IFNAMSIZ + 1];
94627f6c 71 char brname[IFNAMSIZ];
3f5285e8 72 int ifindex;
7524cfb1 73 int if_removed;
c2a04078
JM		 74 struct wpa_driver_capa capa;
75 int has_capability;
c2a04078 76
3f5285e8
JM		 77 int operstate;
78
3f5285e8
JM		 79 int scan_complete_events;
80
81 struct nl_handle *nl_handle;
335ce76b 82 struct nl_handle *nl_handle_event;
3f5285e8 83 struct nl_cache *nl_cache;
335ce76b 84 struct nl_cache *nl_cache_event;
3f5285e8
JM		 85 struct nl_cb *nl_cb;
86 struct genl_family *nl80211;
1c873584 87
e6b8efeb 88 u8 auth_bssid[ETH_ALEN];
c2a04078
JM		 89 u8 bssid[ETH_ALEN];
90 int associated;
fd05d64e
JM		 91 u8 ssid[32];
92 size_t ssid_len;
ad1e68e6
JM		 93 int nlmode;
94 int ap_scan_as_station;
4832ecd7 95 unsigned int assoc_freq;
d2440ba0 96
0915d02c
JM		 97 int monitor_sock;
98 int monitor_ifidx;
504e905c 99 int probe_req_report;
4e5cb1a3 100 int disable_11b_rates;
7da3abe7 101
7da3abe7 102 unsigned int beacon_set:1;
55777702 103 unsigned int pending_remain_on_chan:1;
58f6fbe0 104 unsigned int pending_send_action:1;
94627f6c
JM		 105 unsigned int added_bridge:1;
106 unsigned int added_if_into_bridge:1;
55777702
JM		 107
108 u64 remain_on_chan_cookie;
58f6fbe0 109 u64 send_action_cookie;
c5121837 110
3812464c
JM		 111 struct wpa_driver_scan_filter *filter_ssids;
112 size_t num_filter_ssids;
113
c5121837 114#ifdef HOSTAPD
c5121837 115 int eapol_sock; /* socket for EAPOL frames */
c5121837
JM		 116
117 int default_if_indices[16];
118 int *if_indices;
119 int num_if_indices;
120
c5121837 121 struct i802_bss bss;
c5121837
JM		 122
123 int last_freq;
124 int last_freq_ht;
c5121837 125#endif /* HOSTAPD */
3f5285e8
JM		 126};
127
128
129static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
130 void *timeout_ctx);
ad1e68e6 131static int wpa_driver_nl80211_set_mode(void *priv, int mode);
362f781e 132static int
7524cfb1 133wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
d72aad94
JM		 134static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
135 const u8 *addr, int cmd, u16 reason_code);
460456f8
JM		 136static void nl80211_remove_monitor_interface(
137 struct wpa_driver_nl80211_data *drv);
0915d02c 138
072ad14c 139#ifdef HOSTAPD
2135f224
JM		 140static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
141static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
b4fd6fab
JM		 142static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
143 int ifindex);
bbaf0837 144static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
fbbfcbac
FF		 145static int wpa_driver_nl80211_if_remove(void *priv,
146 enum wpa_driver_if_type type,
147 const char *ifname);
072ad14c
JM		 148#endif /* HOSTAPD */
149
504e905c
JM		 150static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
151 void *timeout_ctx);
4e5cb1a3
JM		 152static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
153 int ifindex, int disabled);
504e905c 154
3f5285e8 155
6241fcb1
JM		 156/* nl80211 code */
157static int ack_handler(struct nl_msg *msg, void *arg)
158{
159 int *err = arg;
160 *err = 0;
161 return NL_STOP;
162}
163
164static int finish_handler(struct nl_msg *msg, void *arg)
165{
8e8df255
JM		 166 int *ret = arg;
167 *ret = 0;
6241fcb1
JM		 168 return NL_SKIP;
169}
170
171static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
172 void *arg)
173{
174 int *ret = arg;
175 *ret = err->error;
176 return NL_SKIP;
177}
178
5b7b85f6
JM		 179
180static int no_seq_check(struct nl_msg *msg, void *arg)
181{
182 return NL_OK;
183}
184
185
58f6fbe0
JM		 186static int send_and_recv(struct wpa_driver_nl80211_data *drv,
187 struct nl_handle *nl_handle, struct nl_msg *msg,
188 int (*valid_handler)(struct nl_msg *, void *),
189 void *valid_data)
6241fcb1
JM		 190{
191 struct nl_cb *cb;
192 int err = -ENOMEM;
193
194 cb = nl_cb_clone(drv->nl_cb);
195 if (!cb)
196 goto out;
197
58f6fbe0 198 err = nl_send_auto_complete(nl_handle, msg);
6241fcb1
JM		 199 if (err < 0)
200 goto out;
201
202 err = 1;
203
204 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
8e8df255 205 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
6241fcb1
JM		 206 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
207
208 if (valid_handler)
209 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
210 valid_handler, valid_data);
211
212 while (err > 0)
58f6fbe0 213 nl_recvmsgs(nl_handle, cb);
6241fcb1
JM		 214 out:
215 nl_cb_put(cb);
216 nlmsg_free(msg);
217 return err;
218}
219
220
58f6fbe0
JM		 221static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
222 struct nl_msg *msg,
223 int (*valid_handler)(struct nl_msg *, void *),
224 void *valid_data)
225{
226 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
227 valid_data);
228}
229
230
97865538
JM		 231struct family_data {
232 const char *group;
233 int id;
234};
235
236
237static int family_handler(struct nl_msg *msg, void *arg)
238{
239 struct family_data *res = arg;
240 struct nlattr *tb[CTRL_ATTR_MAX + 1];
241 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
242 struct nlattr *mcgrp;
243 int i;
244
245 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
246 genlmsg_attrlen(gnlh, 0), NULL);
247 if (!tb[CTRL_ATTR_MCAST_GROUPS])
248 return NL_SKIP;
249
250 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
251 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
252 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
253 nla_len(mcgrp), NULL);
254 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
255 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
256 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
257 res->group,
258 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
259 continue;
260 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
261 break;
262 };
263
264 return NL_SKIP;
265}
266
267
268static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
269 const char *family, const char *group)
270{
271 struct nl_msg *msg;
272 int ret = -1;
273 struct family_data res = { group, -ENOENT };
274
275 msg = nlmsg_alloc();
276 if (!msg)
277 return -ENOMEM;
278 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
279 0, 0, CTRL_CMD_GETFAMILY, 0);
280 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
281
282 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
283 msg = NULL;
284 if (ret == 0)
285 ret = res.id;
286
287nla_put_failure:
288 nlmsg_free(msg);
289 return ret;
290}
291
292
3f5285e8
JM		 293static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
294{
295 struct wpa_driver_nl80211_data *drv = priv;
c2a04078
JM		 296 if (!drv->associated)
297 return -1;
298 os_memcpy(bssid, drv->bssid, ETH_ALEN);
299 return 0;
3f5285e8
JM		 300}
301
302
3f5285e8
JM		 303static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
304{
305 struct wpa_driver_nl80211_data *drv = priv;
fd05d64e
JM		 306 if (!drv->associated)
307 return -1;
308 os_memcpy(ssid, drv->ssid, drv->ssid_len);
309 return drv->ssid_len;
3f5285e8
JM		 310}
311
312
7524cfb1 313static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
08063178 314 char *buf, size_t len, int del)
3f5285e8
JM		 315{
316 union wpa_event_data event;
317
318 os_memset(&event, 0, sizeof(event));
319 if (len > sizeof(event.interface_status.ifname))
320 len = sizeof(event.interface_status.ifname) - 1;
321 os_memcpy(event.interface_status.ifname, buf, len);
322 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
323 EVENT_INTERFACE_ADDED;
324
325 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
326 del ? "DEL" : "NEW",
327 event.interface_status.ifname,
328 del ? "removed" : "added");
329
7524cfb1
JM		 330 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
331 if (del)
332 drv->if_removed = 1;
333 else
334 drv->if_removed = 0;
335 }
336
08063178 337 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
3f5285e8
JM		 338}
339
340
7524cfb1 341static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
62d680c3 342 u8 *buf, size_t len)
7524cfb1 343{
62d680c3 344 int attrlen, rta_len;
7524cfb1
JM		 345 struct rtattr *attr;
346
62d680c3
JM		 347 attrlen = len;
348 attr = (struct rtattr *) buf;
7524cfb1
JM		 349
350 rta_len = RTA_ALIGN(sizeof(struct rtattr));
351 while (RTA_OK(attr, attrlen)) {
352 if (attr->rta_type == IFLA_IFNAME) {
353 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
354 == 0)
355 return 1;
356 else
357 break;
358 }
359 attr = RTA_NEXT(attr, attrlen);
360 }
361
362 return 0;
363}
364
365
366static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
62d680c3 367 int ifindex, u8 *buf, size_t len)
7524cfb1
JM		 368{
369 if (drv->ifindex == ifindex)
370 return 1;
371
62d680c3 372 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
7524cfb1
JM		 373 drv->ifindex = if_nametoindex(drv->ifname);
374 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
375 "interface");
376 wpa_driver_nl80211_finish_drv_init(drv);
377 return 1;
378 }
379
380 return 0;
381}
382
383
62d680c3
JM		 384static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
385 struct ifinfomsg *ifi,
386 u8 *buf, size_t len)
3f5285e8 387{
08063178 388 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 389 int attrlen, rta_len;
390 struct rtattr *attr;
3f5285e8 391
62d680c3 392 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
3f5285e8
JM		 393 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
394 ifi->ifi_index);
395 return;
396 }
397
398 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
399 "(%s%s%s%s)",
400 drv->operstate, ifi->ifi_flags,
401 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
402 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
403 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
404 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
405 /*
406 * Some drivers send the association event before the operup event--in
407 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
408 * fails. This will hit us when wpa_supplicant does not need to do
409 * IEEE 802.1X authentication
410 */
411 if (drv->operstate == 1 &&
412 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
413 !(ifi->ifi_flags & IFF_RUNNING))
08063178 414 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 415 -1, IF_OPER_UP);
3f5285e8 416
62d680c3
JM		 417 attrlen = len;
418 attr = (struct rtattr *) buf;
3f5285e8
JM		 419 rta_len = RTA_ALIGN(sizeof(struct rtattr));
420 while (RTA_OK(attr, attrlen)) {
d8816397 421 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 422 wpa_driver_nl80211_event_link(
08063178 423 drv,
7524cfb1
JM		 424 ((char *) attr) + rta_len,
425 attr->rta_len - rta_len, 0);
3f5285e8
JM		 426 }
427 attr = RTA_NEXT(attr, attrlen);
428 }
429}
430
431
62d680c3
JM		 432static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
433 struct ifinfomsg *ifi,
434 u8 *buf, size_t len)
3f5285e8 435{
08063178 436 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 437 int attrlen, rta_len;
438 struct rtattr *attr;
3f5285e8 439
62d680c3
JM		 440 attrlen = len;
441 attr = (struct rtattr *) buf;
3f5285e8
JM		 442
443 rta_len = RTA_ALIGN(sizeof(struct rtattr));
444 while (RTA_OK(attr, attrlen)) {
445 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 446 wpa_driver_nl80211_event_link(
08063178 447 drv,
7524cfb1
JM		 448 ((char *) attr) + rta_len,
449 attr->rta_len - rta_len, 1);
3f5285e8
JM		 450 }
451 attr = RTA_NEXT(attr, attrlen);
452 }
453}
454
455
c2a04078
JM		 456static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
457 const u8 *frame, size_t len)
458{
459 const struct ieee80211_mgmt *mgmt;
460 union wpa_event_data event;
461
462 mgmt = (const struct ieee80211_mgmt *) frame;
463 if (len < 24 + sizeof(mgmt->u.auth)) {
464 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
465 "frame");
466 return;
467 }
468
e6b8efeb 469 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
c2a04078
JM		 470 os_memset(&event, 0, sizeof(event));
471 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
472 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
473 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
474 if (len > 24 + sizeof(mgmt->u.auth)) {
475 event.auth.ies = mgmt->u.auth.variable;
476 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
477 }
478
479 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
480}
481
482
483static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
484 const u8 *frame, size_t len)
485{
486 const struct ieee80211_mgmt *mgmt;
487 union wpa_event_data event;
488 u16 status;
489
490 mgmt = (const struct ieee80211_mgmt *) frame;
491 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
492 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
493 "frame");
494 return;
495 }
496
497 status = le_to_host16(mgmt->u.assoc_resp.status_code);
498 if (status != WLAN_STATUS_SUCCESS) {
efa46078
JM		 499 os_memset(&event, 0, sizeof(event));
500 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
501 event.assoc_reject.resp_ies =
502 (u8 *) mgmt->u.assoc_resp.variable;
503 event.assoc_reject.resp_ies_len =
504 len - 24 - sizeof(mgmt->u.assoc_resp);
505 }
506 event.assoc_reject.status_code = status;
507
508 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
c2a04078
JM		 509 return;
510 }
511
512 drv->associated = 1;
513 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
514
515 os_memset(&event, 0, sizeof(event));
516 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
517 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
518 event.assoc_info.resp_ies_len =
efa46078 519 len - 24 - sizeof(mgmt->u.assoc_resp);
c2a04078
JM		 520 }
521
4832ecd7
JM		 522 event.assoc_info.freq = drv->assoc_freq;
523
c2a04078
JM		 524 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
525}
526
c1bb3e0a 527
da72a1c1
ZY		 528static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
529 enum nl80211_commands cmd, struct nlattr *status,
530 struct nlattr *addr, struct nlattr *req_ie,
531 struct nlattr *resp_ie)
532{
533 union wpa_event_data event;
534
7da2c527
JM		 535 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
536 /*
537 * Avoid reporting two association events that would confuse
538 * the core code.
539 */
540 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
541 "when using userspace SME", cmd);
542 return;
543 }
544
da72a1c1
ZY		 545 os_memset(&event, 0, sizeof(event));
546 if (cmd == NL80211_CMD_CONNECT &&
547 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
548 if (resp_ie) {
549 event.assoc_reject.resp_ies = nla_data(resp_ie);
550 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
551 }
552 event.assoc_reject.status_code = nla_get_u16(status);
553 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
554 return;
555 }
556
557 drv->associated = 1;
558 if (addr)
559 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
560
561 if (req_ie) {
562 event.assoc_info.req_ies = nla_data(req_ie);
563 event.assoc_info.req_ies_len = nla_len(req_ie);
564 }
565 if (resp_ie) {
566 event.assoc_info.resp_ies = nla_data(resp_ie);
567 event.assoc_info.resp_ies_len = nla_len(resp_ie);
568 }
569
570 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
571}
c2a04078 572
c1bb3e0a 573
da1fb17c
JM		 574static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
575 enum nl80211_commands cmd, struct nlattr *addr)
576{
577 union wpa_event_data event;
578 enum wpa_event_type ev;
579
580 if (nla_len(addr) != ETH_ALEN)
581 return;
582
583 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
584 cmd, MAC2STR((u8 *) nla_data(addr)));
585
586 if (cmd == NL80211_CMD_AUTHENTICATE)
587 ev = EVENT_AUTH_TIMED_OUT;
588 else if (cmd == NL80211_CMD_ASSOCIATE)
589 ev = EVENT_ASSOC_TIMED_OUT;
590 else
591 return;
592
593 os_memset(&event, 0, sizeof(event));
594 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
595 wpa_supplicant_event(drv->ctx, ev, &event);
596}
597
598
58f6fbe0
JM		 599static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
600 struct nlattr *freq, const u8 *frame, size_t len)
601{
602 const struct ieee80211_mgmt *mgmt;
603 union wpa_event_data event;
604 u16 fc, stype;
605
606 mgmt = (const struct ieee80211_mgmt *) frame;
607 if (len < 24) {
608 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
609 return;
610 }
611
612 fc = le_to_host16(mgmt->frame_control);
613 stype = WLAN_FC_GET_STYPE(fc);
614
615 os_memset(&event, 0, sizeof(event));
616 event.rx_action.da = mgmt->da;
617 event.rx_action.sa = mgmt->sa;
618 event.rx_action.bssid = mgmt->bssid;
619 event.rx_action.category = mgmt->u.action.category;
620 event.rx_action.data = &mgmt->u.action.category + 1;
621 event.rx_action.len = frame + len - event.rx_action.data;
622 if (freq)
623 event.rx_action.freq = nla_get_u32(freq);
624 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
625}
626
627
628static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
629 struct nlattr *cookie, const u8 *frame,
630 size_t len, struct nlattr *ack)
631{
632 union wpa_event_data event;
633 const struct ieee80211_hdr *hdr;
634 u16 fc;
635 u64 cookie_val;
636
637 if (!cookie)
638 return;
639
640 cookie_val = nla_get_u64(cookie);
641 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
642 (long long unsigned int) cookie_val,
643 cookie_val == drv->send_action_cookie ?
644 " (match)" : " (unknown)");
645 if (cookie_val != drv->send_action_cookie)
646 return;
647
648 hdr = (const struct ieee80211_hdr *) frame;
649 fc = le_to_host16(hdr->frame_control);
650
651 os_memset(&event, 0, sizeof(event));
652 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
653 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
654 event.tx_status.dst = hdr->addr1;
655 event.tx_status.data = frame;
656 event.tx_status.data_len = len;
657 event.tx_status.ack = ack != NULL;
658 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
659}
660
661
c2a04078 662static void mlme_event(struct wpa_driver_nl80211_data *drv,
da1fb17c 663 enum nl80211_commands cmd, struct nlattr *frame,
58f6fbe0
JM		 664 struct nlattr *addr, struct nlattr *timed_out,
665 struct nlattr *freq, struct nlattr *ack,
666 struct nlattr *cookie)
c2a04078 667{
da1fb17c
JM		 668 if (timed_out && addr) {
669 mlme_timeout_event(drv, cmd, addr);
670 return;
671 }
672
c2a04078
JM		 673 if (frame == NULL) {
674 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
675 "data", cmd);
676 return;
677 }
678
679 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
680 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
681 nla_data(frame), nla_len(frame));
682
683 switch (cmd) {
684 case NL80211_CMD_AUTHENTICATE:
685 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
686 break;
687 case NL80211_CMD_ASSOCIATE:
688 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
689 break;
690 case NL80211_CMD_DEAUTHENTICATE:
691 drv->associated = 0;
692 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
693 break;
694 case NL80211_CMD_DISASSOCIATE:
695 drv->associated = 0;
696 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
697 break;
58f6fbe0
JM		 698 case NL80211_CMD_ACTION:
699 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
700 break;
701 case NL80211_CMD_ACTION_TX_STATUS:
702 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
703 nla_len(frame), ack);
704 break;
c2a04078
JM		 705 default:
706 break;
707 }
708}
709
710
35583f3f
JM		 711static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
712 struct nlattr *tb[])
713{
714 union wpa_event_data data;
715
716 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
717 os_memset(&data, 0, sizeof(data));
718 if (tb[NL80211_ATTR_MAC]) {
719 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
720 nla_data(tb[NL80211_ATTR_MAC]),
721 nla_len(tb[NL80211_ATTR_MAC]));
ad1e68e6 722 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
35583f3f
JM		 723 }
724 if (tb[NL80211_ATTR_KEY_SEQ]) {
725 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
726 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
727 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
728 }
729 if (tb[NL80211_ATTR_KEY_TYPE]) {
730 enum nl80211_key_type key_type =
731 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
732 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
733 if (key_type == NL80211_KEYTYPE_PAIRWISE)
734 data.michael_mic_failure.unicast = 1;
735 } else
736 data.michael_mic_failure.unicast = 1;
737
738 if (tb[NL80211_ATTR_KEY_IDX]) {
739 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
740 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
741 }
742
743 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
744}
745
746
5cc4d64b
JM		 747static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
748 struct nlattr *tb[])
749{
750 if (tb[NL80211_ATTR_MAC] == NULL) {
751 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
752 "event");
753 return;
754 }
755 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
756 drv->associated = 1;
757 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
758 MAC2STR(drv->bssid));
759
760 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
761}
762
763
55777702
JM		 764static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
765 int cancel_event, struct nlattr *tb[])
766{
767 unsigned int freq, chan_type, duration;
768 union wpa_event_data data;
769 u64 cookie;
770
771 if (tb[NL80211_ATTR_WIPHY_FREQ])
772 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
773 else
774 freq = 0;
775
776 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
777 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
778 else
779 chan_type = 0;
780
781 if (tb[NL80211_ATTR_DURATION])
782 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
783 else
784 duration = 0;
785
786 if (tb[NL80211_ATTR_COOKIE])
787 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
788 else
789 cookie = 0;
790
791 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
792 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
793 cancel_event, freq, chan_type, duration,
794 (long long unsigned int) cookie,
795 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
796
797 if (cookie != drv->remain_on_chan_cookie)
798 return; /* not for us */
799
800 drv->pending_remain_on_chan = !cancel_event;
801
802 os_memset(&data, 0, sizeof(data));
803 data.remain_on_channel.freq = freq;
804 data.remain_on_channel.duration = duration;
805 wpa_supplicant_event(drv->ctx, cancel_event ?
806 EVENT_CANCEL_REMAIN_ON_CHANNEL :
807 EVENT_REMAIN_ON_CHANNEL, &data);
808}
809
810
8d923a4a
JM		 811static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
812 struct nlattr *tb[])
813{
814 union wpa_event_data event;
815 struct nlattr *nl;
816 int rem;
817 struct scan_info *info;
818#define MAX_REPORT_FREQS 50
819 int freqs[MAX_REPORT_FREQS];
820 int num_freqs = 0;
821
822 os_memset(&event, 0, sizeof(event));
823 info = &event.scan_info;
824 info->aborted = aborted;
825
826 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
827 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
828 struct wpa_driver_scan_ssid *s =
829 &info->ssids[info->num_ssids];
830 s->ssid = nla_data(nl);
831 s->ssid_len = nla_len(nl);
832 info->num_ssids++;
833 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
834 break;
835 }
836 }
837 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
838 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
839 {
840 freqs[num_freqs] = nla_get_u32(nl);
841 num_freqs++;
842 if (num_freqs == MAX_REPORT_FREQS - 1)
843 break;
844 }
845 info->freqs = freqs;
846 info->num_freqs = num_freqs;
847 }
848 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
849}
850
851
97865538
JM		 852static int process_event(struct nl_msg *msg, void *arg)
853{
854 struct wpa_driver_nl80211_data *drv = arg;
855 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
856 struct nlattr *tb[NL80211_ATTR_MAX + 1];
857
858 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
859 genlmsg_attrlen(gnlh, 0), NULL);
860
861 if (tb[NL80211_ATTR_IFINDEX]) {
862 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
863 if (ifindex != drv->ifindex) {
864 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
865 " for foreign interface (ifindex %d)",
866 gnlh->cmd, ifindex);
867 return NL_SKIP;
868 }
869 }
870
ad1e68e6
JM		 871 if (drv->ap_scan_as_station &&
872 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
873 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
874 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
875 drv->ap_scan_as_station = 0;
876 }
877
97865538 878 switch (gnlh->cmd) {
d942a79e
JM		 879 case NL80211_CMD_TRIGGER_SCAN:
880 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
881 break;
97865538
JM		 882 case NL80211_CMD_NEW_SCAN_RESULTS:
883 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
884 drv->scan_complete_events = 1;
885 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
886 drv->ctx);
8d923a4a 887 send_scan_event(drv, 0, tb);
97865538
JM		 888 break;
889 case NL80211_CMD_SCAN_ABORTED:
890 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
891 /*
892 * Need to indicate that scan results are available in order
893 * not to make wpa_supplicant stop its scanning.
894 */
895 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
896 drv->ctx);
8d923a4a 897 send_scan_event(drv, 1, tb);
97865538 898 break;
c2a04078
JM		 899 case NL80211_CMD_AUTHENTICATE:
900 case NL80211_CMD_ASSOCIATE:
901 case NL80211_CMD_DEAUTHENTICATE:
902 case NL80211_CMD_DISASSOCIATE:
58f6fbe0
JM		 903 case NL80211_CMD_ACTION:
904 case NL80211_CMD_ACTION_TX_STATUS:
da1fb17c 905 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
58f6fbe0
JM		 906 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
907 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
908 tb[NL80211_ATTR_COOKIE]);
c2a04078 909 break;
da72a1c1
ZY		 910 case NL80211_CMD_CONNECT:
911 case NL80211_CMD_ROAM:
912 mlme_event_connect(drv, gnlh->cmd,
913 tb[NL80211_ATTR_STATUS_CODE],
914 tb[NL80211_ATTR_MAC],
915 tb[NL80211_ATTR_REQ_IE],
916 tb[NL80211_ATTR_RESP_IE]);
917 break;
918 case NL80211_CMD_DISCONNECT:
7da2c527
JM		 919 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
920 /*
921 * Avoid reporting two disassociation events that could
922 * confuse the core code.
923 */
924 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
925 "event when using userspace SME");
926 break;
927 }
da72a1c1
ZY		 928 drv->associated = 0;
929 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
930 break;
35583f3f
JM		 931 case NL80211_CMD_MICHAEL_MIC_FAILURE:
932 mlme_event_michael_mic_failure(drv, tb);
933 break;
5cc4d64b
JM		 934 case NL80211_CMD_JOIN_IBSS:
935 mlme_event_join_ibss(drv, tb);
936 break;
55777702
JM		 937 case NL80211_CMD_REMAIN_ON_CHANNEL:
938 mlme_event_remain_on_channel(drv, 0, tb);
939 break;
940 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
941 mlme_event_remain_on_channel(drv, 1, tb);
942 break;
97865538 943 default:
c2a04078
JM		 944 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
945 "(cmd=%d)", gnlh->cmd);
97865538
JM		 946 break;
947 }
948
949 return NL_SKIP;
950}
951
952
953static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
954 void *sock_ctx)
955{
956 struct nl_cb *cb;
957 struct wpa_driver_nl80211_data *drv = eloop_ctx;
958
959 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
960
961 cb = nl_cb_clone(drv->nl_cb);
962 if (!cb)
963 return;
964 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
965 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
335ce76b 966 nl_recvmsgs(drv->nl_handle_event, cb);
97865538
JM		 967 nl_cb_put(cb);
968}
969
970
6d158490
LR		 971/**
972 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
973 * @priv: driver_nl80211 private data
974 * @alpha2_arg: country to which to switch to
975 * Returns: 0 on success, -1 on failure
976 *
977 * This asks nl80211 to set the regulatory domain for given
978 * country ISO / IEC alpha2.
979 */
980static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
981{
982 struct wpa_driver_nl80211_data *drv = priv;
983 char alpha2[3];
984 struct nl_msg *msg;
985
986 msg = nlmsg_alloc();
987 if (!msg)
e785c2ba 988 return -ENOMEM;
6d158490
LR		 989
990 alpha2[0] = alpha2_arg[0];
991 alpha2[1] = alpha2_arg[1];
992 alpha2[2] = '\0';
993
994 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
995 0, NL80211_CMD_REQ_SET_REG, 0);
996
997 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
998 if (send_and_recv_msgs(drv, msg, NULL, NULL))
999 return -EINVAL;
1000 return 0;
1001nla_put_failure:
1002 return -EINVAL;
1003}
1004
1005
bbaf0837 1006#ifndef HOSTAPD
80bc75f1
JM		 1007struct wiphy_info_data {
1008 int max_scan_ssids;
1581b38b 1009 int ap_supported;
93d11400
ZY		 1010 int auth_supported;
1011 int connect_supported;
80bc75f1
JM		 1012};
1013
1014
1015static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1016{
1017 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1018 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1019 struct wiphy_info_data *info = arg;
1020
1021 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1022 genlmsg_attrlen(gnlh, 0), NULL);
1023
1024 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1025 info->max_scan_ssids =
1026 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1027
1581b38b
JM		 1028 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1029 struct nlattr *nl_mode;
1030 int i;
1031 nla_for_each_nested(nl_mode,
1032 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1033 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1034 info->ap_supported = 1;
1035 break;
1036 }
1037 }
1038 }
1039
93d11400
ZY		 1040 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1041 struct nlattr *nl_cmd;
1042 int i;
1043
1044 nla_for_each_nested(nl_cmd,
1045 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1046 u32 cmd = nla_get_u32(nl_cmd);
1047 if (cmd == NL80211_CMD_AUTHENTICATE)
1048 info->auth_supported = 1;
1049 else if (cmd == NL80211_CMD_CONNECT)
1050 info->connect_supported = 1;
1051 }
1052 }
1053
80bc75f1
JM		 1054 return NL_SKIP;
1055}
1056
1057
1058static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1059 struct wiphy_info_data *info)
1060{
1061 struct nl_msg *msg;
1062
1063 os_memset(info, 0, sizeof(*info));
1064 msg = nlmsg_alloc();
1065 if (!msg)
1066 return -1;
1067
1068 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1069 0, NL80211_CMD_GET_WIPHY, 0);
1070
1071 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1072
1073 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1074 return 0;
1075 msg = NULL;
1076nla_put_failure:
1077 nlmsg_free(msg);
1078 return -1;
1079}
1080
1081
93d11400 1082static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
80bc75f1
JM		 1083{
1084 struct wiphy_info_data info;
1085 if (wpa_driver_nl80211_get_info(drv, &info))
93d11400 1086 return -1;
80bc75f1 1087 drv->has_capability = 1;
1b2a72e8
JM		 1088 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1089 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1090 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1091 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1092 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1093 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1094 WPA_DRIVER_CAPA_ENC_WEP104 |
1095 WPA_DRIVER_CAPA_ENC_TKIP |
1096 WPA_DRIVER_CAPA_ENC_CCMP;
291b6068
JM		 1097 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1098 WPA_DRIVER_AUTH_SHARED |
1099 WPA_DRIVER_AUTH_LEAP;
1b2a72e8 1100
80bc75f1 1101 drv->capa.max_scan_ssids = info.max_scan_ssids;
1581b38b
JM		 1102 if (info.ap_supported)
1103 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
93d11400
ZY		 1104
1105 if (info.auth_supported)
1106 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1107 else if (!info.connect_supported) {
1108 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1109 "authentication/association or connect commands");
1110 return -1;
1111 }
1112
0194fedb
JB		 1113 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1114
93d11400 1115 return 0;
80bc75f1 1116}
bbaf0837 1117#endif /* HOSTAPD */
80bc75f1
JM		 1118
1119
9fff9fdc
JM		 1120static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1121 void *ctx)
3f5285e8 1122{
9fff9fdc 1123 int ret;
3f5285e8 1124
9fff9fdc 1125 /* Initialize generic netlink and nl80211 */
3f5285e8
JM		 1126
1127 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1128 if (drv->nl_cb == NULL) {
1129 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1130 "callbacks");
1131 goto err1;
1132 }
1133
1134 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1135 if (drv->nl_handle == NULL) {
1136 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1137 "callbacks");
1138 goto err2;
1139 }
1140
335ce76b
JM		 1141 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1142 if (drv->nl_handle_event == NULL) {
1143 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1144 "callbacks (event)");
1145 goto err2b;
1146 }
1147
3f5285e8
JM		 1148 if (genl_connect(drv->nl_handle)) {
1149 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1150 "netlink");
1151 goto err3;
1152 }
1153
335ce76b
JM		 1154 if (genl_connect(drv->nl_handle_event)) {
1155 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1156 "netlink (event)");
1157 goto err3;
1158 }
1159
9fff9fdc
JM		 1160#ifdef CONFIG_LIBNL20
1161 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1162 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1163 "netlink cache");
1164 goto err3;
1165 }
335ce76b
JM		 1166 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1167 0) {
1168 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1169 "netlink cache (event)");
1170 goto err3b;
1171 }
9fff9fdc 1172#else /* CONFIG_LIBNL20 */
3f5285e8
JM		 1173 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1174 if (drv->nl_cache == NULL) {
1175 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1176 "netlink cache");
1177 goto err3;
1178 }
335ce76b
JM		 1179 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1180 if (drv->nl_cache_event == NULL) {
1181 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1182 "netlink cache (event)");
1183 goto err3b;
1184 }
9fff9fdc
JM		 1185#endif /* CONFIG_LIBNL20 */
1186
3f5285e8
JM		 1187 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1188 if (drv->nl80211 == NULL) {
1189 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1190 "found");
1191 goto err4;
1192 }
1193
97865538
JM		 1194 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1195 if (ret >= 0)
335ce76b 1196 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
97865538
JM		 1197 if (ret < 0) {
1198 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1199 "membership for scan events: %d (%s)",
1200 ret, strerror(-ret));
1201 goto err4;
1202 }
c2a04078
JM		 1203
1204 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1205 if (ret >= 0)
335ce76b 1206 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
c2a04078
JM		 1207 if (ret < 0) {
1208 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1209 "membership for mlme events: %d (%s)",
1210 ret, strerror(-ret));
1211 goto err4;
1212 }
c2a04078 1213
335ce76b 1214 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
97865538
JM		 1215 wpa_driver_nl80211_event_receive, drv, ctx);
1216
9fff9fdc
JM		 1217 return 0;
1218
1219err4:
335ce76b
JM		 1220 nl_cache_free(drv->nl_cache_event);
1221err3b:
9fff9fdc
JM		 1222 nl_cache_free(drv->nl_cache);
1223err3:
335ce76b
JM		 1224 nl_handle_destroy(drv->nl_handle_event);
1225err2b:
9fff9fdc
JM		 1226 nl_handle_destroy(drv->nl_handle);
1227err2:
1228 nl_cb_put(drv->nl_cb);
1229err1:
1230 return -1;
1231}
1232
1233
1234/**
1235 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1236 * @ctx: context to be used when calling wpa_supplicant functions,
1237 * e.g., wpa_supplicant_event()
1238 * @ifname: interface name, e.g., wlan0
1239 * Returns: Pointer to private data, %NULL on failure
1240 */
1241static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1242{
9fff9fdc 1243 struct wpa_driver_nl80211_data *drv;
08063178 1244 struct netlink_config *cfg;
9fff9fdc
JM		 1245
1246 drv = os_zalloc(sizeof(*drv));
1247 if (drv == NULL)
1248 return NULL;
1249 drv->ctx = ctx;
1250 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
9fff9fdc
JM		 1251 drv->monitor_ifidx = -1;
1252 drv->monitor_sock = -1;
bbaf0837 1253 drv->ioctl_sock = -1;
9fff9fdc 1254
bbaf0837
JM		 1255 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1256 os_free(drv);
1257 return NULL;
1258 }
9fff9fdc 1259
3f5285e8
JM		 1260 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1261 if (drv->ioctl_sock < 0) {
1262 perror("socket(PF_INET,SOCK_DGRAM)");
bbaf0837 1263 goto failed;
3f5285e8
JM		 1264 }
1265
08063178
JM		 1266 cfg = os_zalloc(sizeof(*cfg));
1267 if (cfg == NULL)
1268 goto failed;
1269 cfg->ctx = drv;
1270 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1271 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1272 drv->netlink = netlink_init(cfg);
1273 if (drv->netlink == NULL) {
1274 os_free(cfg);
1275 goto failed;
1276 }
1277 if (wpa_driver_nl80211_finish_drv_init(drv))
bbaf0837 1278 goto failed;
7524cfb1
JM		 1279
1280 return drv;
1281
bbaf0837 1282failed:
08063178 1283 netlink_deinit(drv->netlink);
bbaf0837
JM		 1284 if (drv->ioctl_sock >= 0)
1285 close(drv->ioctl_sock);
1286
7524cfb1 1287 genl_family_put(drv->nl80211);
7524cfb1 1288 nl_cache_free(drv->nl_cache);
7524cfb1 1289 nl_handle_destroy(drv->nl_handle);
7524cfb1 1290 nl_cb_put(drv->nl_cb);
bbaf0837 1291
7524cfb1
JM		 1292 os_free(drv);
1293 return NULL;
1294}
1295
1296
58f6fbe0
JM		 1297static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1298 const u8 *match, size_t match_len)
1299{
1300 struct nl_msg *msg;
1301 int ret = -1;
1302
1303 msg = nlmsg_alloc();
1304 if (!msg)
1305 return -1;
1306
1307 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1308 NL80211_CMD_REGISTER_ACTION, 0);
1309
1310 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1311 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1312
1313 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1314 msg = NULL;
1315 if (ret) {
1316 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1317 "failed: ret=%d (%s)", ret, strerror(-ret));
1318 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1319 match, match_len);
1320 goto nla_put_failure;
1321 }
1322 ret = 0;
1323nla_put_failure:
1324 nlmsg_free(msg);
1325 return ret;
1326}
1327
1328
1329static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1330{
1331 if (0) {
1332 /* Public Action frames */
1333 return nl80211_register_action_frame(drv, (u8 *) "\x04", 1);
1334 }
1335 return 0;
1336}
1337
1338
362f781e 1339static int
7524cfb1
JM		 1340wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1341{
a87c9d96
JM		 1342 drv->ifindex = if_nametoindex(drv->ifname);
1343
bbaf0837 1344#ifndef HOSTAPD
ad1e68e6 1345 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
a87c9d96
JM		 1346 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1347 "use managed mode");
1348 }
1349
34f2f814
JM		 1350 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1)) {
1351 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1352 drv->ifname);
362f781e
JM		 1353 return -1;
1354 }
3f5285e8 1355
93d11400
ZY		 1356 if (wpa_driver_nl80211_capa(drv))
1357 return -1;
80bc75f1 1358
08063178 1359 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 1360 1, IF_OPER_DORMANT);
bbaf0837 1361#endif /* HOSTAPD */
362f781e 1362
58f6fbe0
JM		 1363 if (nl80211_register_action_frames(drv) < 0)
1364 return -1;
1365
362f781e 1366 return 0;
3f5285e8
JM		 1367}
1368
1369
bbaf0837
JM		 1370#ifdef HOSTAPD
1371static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1372{
1373 struct i802_bss *bss, *prev;
1374 bss = drv->bss.next;
1375 while (bss) {
1376 prev = bss;
1377 bss = bss->next;
1378 os_free(bss);
1379 }
1380}
1381#endif /* HOSTAPD */
1382
1383
8a27af5c
JM		 1384static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1385{
1386 struct nl_msg *msg;
1387
1388 msg = nlmsg_alloc();
1389 if (!msg)
1390 return -ENOMEM;
1391
1392 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1393 0, NL80211_CMD_DEL_BEACON, 0);
1394 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1395
1396 return send_and_recv_msgs(drv, msg, NULL, NULL);
1397 nla_put_failure:
1398 return -ENOBUFS;
1399}
8a27af5c
JM		 1400
1401
3f5285e8 1402/**
7e5ba1b9
JM		 1403 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1404 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3f5285e8
JM		 1405 *
1406 * Shut down driver interface and processing of driver events. Free
1407 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1408 */
7e5ba1b9 1409static void wpa_driver_nl80211_deinit(void *priv)
3f5285e8
JM		 1410{
1411 struct wpa_driver_nl80211_data *drv = priv;
3f5285e8 1412
94627f6c
JM		 1413 if (drv->added_if_into_bridge) {
1414 if (linux_br_del_if(drv->ioctl_sock, drv->brname, drv->ifname)
1415 < 0)
1416 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1417 "interface %s from bridge %s: %s",
1418 drv->ifname, drv->brname, strerror(errno));
1419 }
1420 if (drv->added_bridge) {
1421 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1422 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1423 "bridge %s: %s",
1424 drv->brname, strerror(errno));
1425 }
1426
460456f8 1427 nl80211_remove_monitor_interface(drv);
8a27af5c
JM		 1428
1429 if (drv->nlmode == NL80211_IFTYPE_AP)
1430 wpa_driver_nl80211_del_beacon(drv);
0915d02c 1431
bbaf0837
JM		 1432#ifdef HOSTAPD
1433 if (drv->last_freq_ht) {
1434 /* Clear HT flags from the driver */
1435 struct hostapd_freq_params freq;
1436 os_memset(&freq, 0, sizeof(freq));
1437 freq.freq = drv->last_freq;
1438 i802_set_freq(priv, &freq);
1439 }
1440
bbaf0837
JM		 1441 if (drv->eapol_sock >= 0) {
1442 eloop_unregister_read_sock(drv->eapol_sock);
1443 close(drv->eapol_sock);
1444 }
1445
1446 if (drv->if_indices != drv->default_if_indices)
1447 os_free(drv->if_indices);
1448
1449 wpa_driver_nl80211_free_bss(drv);
1b648c7e 1450#endif /* HOSTAPD */
3f5285e8 1451
4e5cb1a3
JM		 1452 if (drv->disable_11b_rates)
1453 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1454
08063178
JM		 1455 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1456 netlink_deinit(drv->netlink);
3f5285e8 1457
bbaf0837
JM		 1458 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1459
34f2f814 1460 (void) linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0);
ad1e68e6 1461 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
3f5285e8 1462
bbaf0837
JM		 1463 if (drv->ioctl_sock >= 0)
1464 close(drv->ioctl_sock);
3f5285e8 1465
335ce76b 1466 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
3f5285e8
JM		 1467 genl_family_put(drv->nl80211);
1468 nl_cache_free(drv->nl_cache);
335ce76b 1469 nl_cache_free(drv->nl_cache_event);
3f5285e8 1470 nl_handle_destroy(drv->nl_handle);
335ce76b 1471 nl_handle_destroy(drv->nl_handle_event);
3f5285e8
JM		 1472 nl_cb_put(drv->nl_cb);
1473
504e905c
JM		 1474 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1475 drv, NULL);
1476
3812464c
JM		 1477 os_free(drv->filter_ssids);
1478
3f5285e8
JM		 1479 os_free(drv);
1480}
1481
1482
1483/**
1484 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
ad1e68e6 1485 * @eloop_ctx: Driver private data
3f5285e8
JM		 1486 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1487 *
1488 * This function can be used as registered timeout when starting a scan to
1489 * generate a scan completed event if the driver does not report this.
1490 */
1491static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1492{
ad1e68e6
JM		 1493 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1494 if (drv->ap_scan_as_station) {
1495 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1496 drv->ap_scan_as_station = 0;
1497 }
3f5285e8
JM		 1498 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1499 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1500}
1501
1502
1503/**
1504 * wpa_driver_nl80211_scan - Request the driver to initiate scan
ad1e68e6 1505 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
6a1063e0 1506 * @params: Scan parameters
3f5285e8
JM		 1507 * Returns: 0 on success, -1 on failure
1508 */
6a1063e0
JM		 1509static int wpa_driver_nl80211_scan(void *priv,
1510 struct wpa_driver_scan_params *params)
3f5285e8
JM		 1511{
1512 struct wpa_driver_nl80211_data *drv = priv;
3f5285e8 1513 int ret = 0, timeout;
d3a98225 1514 struct nl_msg *msg, *ssids, *freqs;
6a1063e0 1515 size_t i;
3f5285e8 1516
0e75527f
JM		 1517 msg = nlmsg_alloc();
1518 ssids = nlmsg_alloc();
d3a98225
JM		 1519 freqs = nlmsg_alloc();
1520 if (!msg || !ssids || !freqs) {
0e75527f
JM		 1521 nlmsg_free(msg);
1522 nlmsg_free(ssids);
d3a98225 1523 nlmsg_free(freqs);
3f5285e8
JM		 1524 return -1;
1525 }
1526
3812464c
JM		 1527 os_free(drv->filter_ssids);
1528 drv->filter_ssids = params->filter_ssids;
1529 params->filter_ssids = NULL;
1530 drv->num_filter_ssids = params->num_filter_ssids;
1531
0e75527f
JM		 1532 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1533 NL80211_CMD_TRIGGER_SCAN, 0);
1534
1535 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1536
6a1063e0
JM		 1537 for (i = 0; i < params->num_ssids; i++) {
1538 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1539 params->ssids[i].ssid);
3f5285e8 1540 }
6a1063e0
JM		 1541 if (params->num_ssids)
1542 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3f5285e8 1543
d173df52
JM		 1544 if (params->extra_ies) {
1545 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1546 params->extra_ies);
1547 }
1548
d3a98225
JM		 1549 if (params->freqs) {
1550 for (i = 0; params->freqs[i]; i++)
1551 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1552 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1553 }
1554
0e75527f
JM		 1555 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1556 msg = NULL;
1557 if (ret) {
1558 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1559 "(%s)", ret, strerror(-ret));
ad1e68e6
JM		 1560#ifdef HOSTAPD
1561 if (drv->nlmode == NL80211_IFTYPE_AP) {
1562 /*
1563 * mac80211 does not allow scan requests in AP mode, so
1564 * try to do this in station mode.
1565 */
1566 if (wpa_driver_nl80211_set_mode(drv,
1567 IEEE80211_MODE_INFRA))
1568 goto nla_put_failure;
1569
1570 if (wpa_driver_nl80211_scan(drv, params)) {
1571 wpa_driver_nl80211_set_mode(drv,
1572 IEEE80211_MODE_AP);
1573 goto nla_put_failure;
1574 }
1575
1576 /* Restore AP mode when processing scan results */
1577 drv->ap_scan_as_station = 1;
1578 ret = 0;
1579 } else
1580 goto nla_put_failure;
1581#else /* HOSTAPD */
0e75527f 1582 goto nla_put_failure;
ad1e68e6 1583#endif /* HOSTAPD */
3f5285e8
JM		 1584 }
1585
1586 /* Not all drivers generate "scan completed" wireless event, so try to
1587 * read results after a timeout. */
0e75527f 1588 timeout = 10;
3f5285e8
JM		 1589 if (drv->scan_complete_events) {
1590 /*
d173df52
JM		 1591 * The driver seems to deliver events to notify when scan is
1592 * complete, so use longer timeout to avoid race conditions
1593 * with scanning and following association request.
3f5285e8
JM		 1594 */
1595 timeout = 30;
1596 }
1597 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1598 "seconds", ret, timeout);
1599 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
0e75527f
JM		 1600 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1601 drv, drv->ctx);
3f5285e8 1602
0e75527f
JM		 1603nla_put_failure:
1604 nlmsg_free(ssids);
1605 nlmsg_free(msg);
d3a98225 1606 nlmsg_free(freqs);
3f5285e8
JM		 1607 return ret;
1608}
1609
1610
3812464c
JM		 1611static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1612{
1613 const u8 *end, *pos;
1614
1615 if (ies == NULL)
1616 return NULL;
1617
1618 pos = ies;
1619 end = ies + ies_len;
1620
1621 while (pos + 1 < end) {
1622 if (pos + 2 + pos[1] > end)
1623 break;
1624 if (pos[0] == ie)
1625 return pos;
1626 pos += 2 + pos[1];
1627 }
1628
1629 return NULL;
1630}
1631
1632
1633static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1634 const u8 *ie, size_t ie_len)
1635{
1636 const u8 *ssid;
1637 size_t i;
1638
1639 if (drv->filter_ssids == NULL)
1640 return 0;
1641
1642 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1643 if (ssid == NULL)
1644 return 1;
1645
1646 for (i = 0; i < drv->num_filter_ssids; i++) {
1647 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1648 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1649 0)
1650 return 0;
1651 }
1652
1653 return 1;
1654}
1655
1656
1657struct nl80211_bss_info_arg {
1658 struct wpa_driver_nl80211_data *drv;
1659 struct wpa_scan_results *res;
1660};
1661
b3db1e1c 1662static int bss_info_handler(struct nl_msg *msg, void *arg)
3f5285e8 1663{
b3db1e1c
JM		 1664 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1665 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1666 struct nlattr *bss[NL80211_BSS_MAX + 1];
1667 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1668 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1669 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1670 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1671 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1672 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1673 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1674 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1675 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
e6b8efeb 1676 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
b3ad11bb 1677 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
8c090654 1678 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
b3db1e1c 1679 };
3812464c
JM		 1680 struct nl80211_bss_info_arg *_arg = arg;
1681 struct wpa_scan_results *res = _arg->res;
3f5285e8
JM		 1682 struct wpa_scan_res **tmp;
1683 struct wpa_scan_res *r;
8c090654
JM		 1684 const u8 *ie, *beacon_ie;
1685 size_t ie_len, beacon_ie_len;
1686 u8 *pos;
3f5285e8 1687
b3db1e1c
JM		 1688 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1689 genlmsg_attrlen(gnlh, 0), NULL);
1690 if (!tb[NL80211_ATTR_BSS])
1691 return NL_SKIP;
1692 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1693 bss_policy))
1694 return NL_SKIP;
1695 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1696 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1697 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1698 } else {
1699 ie = NULL;
1700 ie_len = 0;
1701 }
8c090654
JM		 1702 if (bss[NL80211_BSS_BEACON_IES]) {
1703 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1704 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1705 } else {
1706 beacon_ie = NULL;
1707 beacon_ie_len = 0;
1708 }
3f5285e8 1709
3812464c
JM		 1710 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1711 ie ? ie_len : beacon_ie_len))
1712 return NL_SKIP;
1713
8c090654 1714 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3f5285e8 1715 if (r == NULL)
b3db1e1c
JM		 1716 return NL_SKIP;
1717 if (bss[NL80211_BSS_BSSID])
1718 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1719 ETH_ALEN);
1720 if (bss[NL80211_BSS_FREQUENCY])
1721 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1722 if (bss[NL80211_BSS_BEACON_INTERVAL])
1723 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1724 if (bss[NL80211_BSS_CAPABILITY])
1725 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
7c2849d2
JM		 1726 r->flags |= WPA_SCAN_NOISE_INVALID;
1727 if (bss[NL80211_BSS_SIGNAL_MBM]) {
b3db1e1c 1728 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
7c2849d2
JM		 1729 r->level /= 100; /* mBm to dBm */
1730 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1731 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1732 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1733 r->flags |= WPA_SCAN_LEVEL_INVALID;
1734 } else
1735 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
b3db1e1c
JM		 1736 if (bss[NL80211_BSS_TSF])
1737 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
b3ad11bb
JM		 1738 if (bss[NL80211_BSS_SEEN_MS_AGO])
1739 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
b3db1e1c 1740 r->ie_len = ie_len;
8c090654
JM		 1741 pos = (u8 *) (r + 1);
1742 if (ie) {
1743 os_memcpy(pos, ie, ie_len);
1744 pos += ie_len;
1745 }
1746 r->beacon_ie_len = beacon_ie_len;
1747 if (beacon_ie)
1748 os_memcpy(pos, beacon_ie, beacon_ie_len);
3f5285e8 1749
e6b8efeb
JM		 1750 if (bss[NL80211_BSS_STATUS]) {
1751 enum nl80211_bss_status status;
1752 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1753 switch (status) {
1754 case NL80211_BSS_STATUS_AUTHENTICATED:
1755 r->flags |= WPA_SCAN_AUTHENTICATED;
1756 break;
1757 case NL80211_BSS_STATUS_ASSOCIATED:
1758 r->flags |= WPA_SCAN_ASSOCIATED;
1759 break;
1760 default:
1761 break;
1762 }
1763 }
1764
3f5285e8
JM		 1765 tmp = os_realloc(res->res,
1766 (res->num + 1) * sizeof(struct wpa_scan_res *));
1767 if (tmp == NULL) {
1768 os_free(r);
b3db1e1c 1769 return NL_SKIP;
3f5285e8
JM		 1770 }
1771 tmp[res->num++] = r;
1772 res->res = tmp;
b3db1e1c
JM		 1773
1774 return NL_SKIP;
3f5285e8 1775}
b3db1e1c 1776
3f5285e8 1777
d72aad94
JM		 1778static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1779 const u8 *addr)
1780{
1781 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1782 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
582507be 1783 "mismatch (" MACSTR ")", MAC2STR(addr));
d72aad94
JM		 1784 wpa_driver_nl80211_mlme(drv, addr,
1785 NL80211_CMD_DEAUTHENTICATE,
1786 WLAN_REASON_PREV_AUTH_NOT_VALID);
1787 }
1788}
1789
1790
e6b8efeb
JM		 1791static void wpa_driver_nl80211_check_bss_status(
1792 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1793{
1794 size_t i;
1795
1796 for (i = 0; i < res->num; i++) {
1797 struct wpa_scan_res *r = res->res[i];
1798 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1799 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1800 "indicates BSS status with " MACSTR
1801 " as authenticated",
1802 MAC2STR(r->bssid));
1803 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1804 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1805 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1806 0) {
1807 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1808 " in local state (auth=" MACSTR
1809 " assoc=" MACSTR ")",
1810 MAC2STR(drv->auth_bssid),
1811 MAC2STR(drv->bssid));
582507be 1812 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1813 }
1814 }
1815
1816 if (r->flags & WPA_SCAN_ASSOCIATED) {
1817 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1818 "indicate BSS status with " MACSTR
1819 " as associated",
1820 MAC2STR(r->bssid));
1821 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1822 !drv->associated) {
1823 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1824 "(not associated) does not match "
1825 "with BSS state");
d72aad94 1826 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1827 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1828 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1829 0) {
1830 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1831 "(associated with " MACSTR ") does "
1832 "not match with BSS state",
d72aad94
JM		 1833 MAC2STR(drv->bssid));
1834 clear_state_mismatch(drv, r->bssid);
1835 clear_state_mismatch(drv, drv->bssid);
e6b8efeb
JM		 1836 }
1837 }
1838 }
1839}
1840
1841
d1f9c410
JM		 1842static void wpa_scan_results_free(struct wpa_scan_results *res)
1843{
1844 size_t i;
1845
1846 if (res == NULL)
1847 return;
1848
1849 for (i = 0; i < res->num; i++)
1850 os_free(res->res[i]);
1851 os_free(res->res);
1852 os_free(res);
1853}
1854
1855
7e5ba1b9 1856static struct wpa_scan_results *
8856462d 1857nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3f5285e8 1858{
b3db1e1c 1859 struct nl_msg *msg;
3f5285e8 1860 struct wpa_scan_results *res;
b3db1e1c 1861 int ret;
3812464c 1862 struct nl80211_bss_info_arg arg;
3f5285e8
JM		 1863
1864 res = os_zalloc(sizeof(*res));
b3db1e1c 1865 if (res == NULL)
8e2c104f 1866 return NULL;
b3db1e1c
JM		 1867 msg = nlmsg_alloc();
1868 if (!msg)
1869 goto nla_put_failure;
3f5285e8 1870
b3db1e1c
JM		 1871 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1872 NL80211_CMD_GET_SCAN, 0);
1873 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1874
3812464c
JM		 1875 arg.drv = drv;
1876 arg.res = res;
1877 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
b3db1e1c
JM		 1878 msg = NULL;
1879 if (ret == 0) {
1880 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1881 (unsigned long) res->num);
1882 return res;
3f5285e8 1883 }
b3db1e1c
JM		 1884 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1885 "(%s)", ret, strerror(-ret));
1886nla_put_failure:
1887 nlmsg_free(msg);
1888 wpa_scan_results_free(res);
1889 return NULL;
3f5285e8
JM		 1890}
1891
1892
8856462d
JM		 1893/**
1894 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1895 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1896 * Returns: Scan results on success, -1 on failure
1897 */
1898static struct wpa_scan_results *
1899wpa_driver_nl80211_get_scan_results(void *priv)
1900{
1901 struct wpa_driver_nl80211_data *drv = priv;
1902 struct wpa_scan_results *res;
1903
1904 res = nl80211_get_scan_results(drv);
1905 if (res)
1906 wpa_driver_nl80211_check_bss_status(drv, res);
1907 return res;
1908}
1909
1910
1911static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1912{
1913 struct wpa_scan_results *res;
1914 size_t i;
1915
1916 res = nl80211_get_scan_results(drv);
1917 if (res == NULL) {
1918 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1919 return;
1920 }
1921
1922 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1923 for (i = 0; i < res->num; i++) {
1924 struct wpa_scan_res *r = res->res[i];
1925 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1926 (int) i, (int) res->num, MAC2STR(r->bssid),
1927 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1928 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1929 }
1930
1931 wpa_scan_results_free(res);
1932}
1933
1934
642187d6 1935static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
71934751
JM		 1936 enum wpa_alg alg, const u8 *addr,
1937 int key_idx, int set_tx,
642187d6
JM		 1938 const u8 *seq, size_t seq_len,
1939 const u8 *key, size_t key_len)
3f5285e8 1940{
642187d6
JM		 1941 struct wpa_driver_nl80211_data *drv = priv;
1942 int ifindex = if_nametoindex(ifname);
3f5285e8 1943 struct nl_msg *msg;
1ad1cdc2 1944 int ret;
3f5285e8 1945
1ad1cdc2
JM		 1946 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1947 "set_tx=%d seq_len=%lu key_len=%lu",
1948 __func__, ifindex, alg, addr, key_idx, set_tx,
3f5285e8
JM		 1949 (unsigned long) seq_len, (unsigned long) key_len);
1950
1951 msg = nlmsg_alloc();
1ad1cdc2
JM		 1952 if (!msg)
1953 return -ENOMEM;
3f5285e8
JM		 1954
1955 if (alg == WPA_ALG_NONE) {
1ad1cdc2
JM		 1956 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1957 0, NL80211_CMD_DEL_KEY, 0);
3f5285e8 1958 } else {
1ad1cdc2
JM		 1959 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1960 0, NL80211_CMD_NEW_KEY, 0);
3f5285e8 1961 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
d723bab4
JM		 1962 switch (alg) {
1963 case WPA_ALG_WEP:
1964 if (key_len == 5)
1965 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1966 WLAN_CIPHER_SUITE_WEP40);
1967 else
1968 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1969 WLAN_CIPHER_SUITE_WEP104);
1970 break;
1971 case WPA_ALG_TKIP:
1972 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1973 WLAN_CIPHER_SUITE_TKIP);
1974 break;
1975 case WPA_ALG_CCMP:
1976 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1977 WLAN_CIPHER_SUITE_CCMP);
1978 break;
1979 case WPA_ALG_IGTK:
1980 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1981 WLAN_CIPHER_SUITE_AES_CMAC);
1982 break;
1983 default:
1984 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1985 "algorithm %d", __func__, alg);
3f5285e8
JM		 1986 nlmsg_free(msg);
1987 return -1;
1988 }
1989 }
1990
849ef835 1991 if (seq && seq_len)
1ad1cdc2
JM		 1992 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1993
3f5285e8
JM		 1994 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1995 {
1996 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1997 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1998 }
1999 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1ad1cdc2 2000 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3f5285e8 2001
1ad1cdc2
JM		 2002 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2003 if (ret == -ENOENT && alg == WPA_ALG_NONE)
2004 ret = 0;
2005 if (ret)
2006 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2007 ret, strerror(-ret));
3f5285e8 2008
1ad1cdc2
JM		 2009 /*
2010 * If we failed or don't need to set the default TX key (below),
2011 * we're done here.
2012 */
2013 if (ret || !set_tx || alg == WPA_ALG_NONE)
2014 return ret;
2015#ifdef HOSTAPD /* FIX: is this needed? */
2016 if (addr)
2017 return ret;
2018#endif /* HOSTAPD */
3f5285e8 2019
1ad1cdc2
JM		 2020 msg = nlmsg_alloc();
2021 if (!msg)
2022 return -ENOMEM;
3f5285e8 2023
1ad1cdc2
JM		 2024 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2025 0, NL80211_CMD_SET_KEY, 0);
2026 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2027 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2028 if (alg == WPA_ALG_IGTK)
2029 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2030 else
2031 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3f5285e8 2032
1ad1cdc2
JM		 2033 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2034 if (ret == -ENOENT)
2035 ret = 0;
2036 if (ret)
2037 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2038 "err=%d %s)", ret, strerror(-ret));
2039 return ret;
3f5285e8
JM		 2040
2041nla_put_failure:
6241fcb1 2042 return -ENOBUFS;
3f5285e8
JM		 2043}
2044
2045
71934751 2046static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
0194fedb
JB		 2047 int key_idx, int defkey,
2048 const u8 *seq, size_t seq_len,
2049 const u8 *key, size_t key_len)
2050{
2051 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2052 if (!key_attr)
2053 return -1;
2054
2055 if (defkey && alg == WPA_ALG_IGTK)
2056 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2057 else if (defkey)
2058 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2059
2060 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2061
d723bab4
JM		 2062 switch (alg) {
2063 case WPA_ALG_WEP:
2064 if (key_len == 5)
2aa5f847
JM		 2065 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2066 WLAN_CIPHER_SUITE_WEP40);
d723bab4 2067 else
2aa5f847
JM		 2068 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2069 WLAN_CIPHER_SUITE_WEP104);
d723bab4
JM		 2070 break;
2071 case WPA_ALG_TKIP:
2aa5f847 2072 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
d723bab4
JM		 2073 break;
2074 case WPA_ALG_CCMP:
2aa5f847 2075 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
d723bab4
JM		 2076 break;
2077 case WPA_ALG_IGTK:
2aa5f847
JM		 2078 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2079 WLAN_CIPHER_SUITE_AES_CMAC);
d723bab4
JM		 2080 break;
2081 default:
2082 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2083 "algorithm %d", __func__, alg);
0194fedb 2084 return -1;
d723bab4 2085 }
0194fedb
JB		 2086
2087 if (seq && seq_len)
2088 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2089
2090 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2091
2092 nla_nest_end(msg, key_attr);
2093
2094 return 0;
2095 nla_put_failure:
2096 return -1;
2097}
2098
c811d5bc 2099
cfaab580
ZY		 2100static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2101 struct nl_msg *msg)
2102{
2103 int i, privacy = 0;
2104 struct nlattr *nl_keys, *nl_key;
2105
2106 for (i = 0; i < 4; i++) {
2107 if (!params->wep_key[i])
2108 continue;
2109 privacy = 1;
2110 break;
2111 }
2112 if (!privacy)
2113 return 0;
2114
2115 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2116
2117 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2118 if (!nl_keys)
2119 goto nla_put_failure;
2120
2121 for (i = 0; i < 4; i++) {
2122 if (!params->wep_key[i])
2123 continue;
2124
2125 nl_key = nla_nest_start(msg, i);
2126 if (!nl_key)
2127 goto nla_put_failure;
2128
2129 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2130 params->wep_key[i]);
2131 if (params->wep_key_len[i] == 5)
2132 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2133 WLAN_CIPHER_SUITE_WEP40);
2134 else
2135 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2136 WLAN_CIPHER_SUITE_WEP104);
2137
2138 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2139
2140 if (i == params->wep_tx_keyidx)
2141 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2142
2143 nla_nest_end(msg, nl_key);
2144 }
2145 nla_nest_end(msg, nl_keys);
2146
2147 return 0;
2148
2149nla_put_failure:
2150 return -ENOBUFS;
2151}
2152
2153
c2a04078
JM		 2154static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2155 const u8 *addr, int cmd, u16 reason_code)
2156{
2157 int ret = -1;
2158 struct nl_msg *msg;
2159
2160 msg = nlmsg_alloc();
2161 if (!msg)
2162 return -1;
2163
2164 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2165
2166 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2167 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2168 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2169
2170 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2171 msg = NULL;
2172 if (ret) {
2173 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2174 "(%s)", ret, strerror(-ret));
2175 goto nla_put_failure;
2176 }
2177 ret = 0;
2178
2179nla_put_failure:
2180 nlmsg_free(msg);
2181 return ret;
2182}
3f5285e8
JM		 2183
2184
cfaab580
ZY		 2185static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2186 const u8 *addr, int reason_code)
2187{
2188 wpa_printf(MSG_DEBUG, "%s", __func__);
2189 drv->associated = 0;
2190 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2191 reason_code);
2192}
2193
2194
3f5285e8 2195static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
c2a04078 2196 int reason_code)
3f5285e8
JM		 2197{
2198 struct wpa_driver_nl80211_data *drv = priv;
cfaab580
ZY		 2199 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2200 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2201 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2202 drv->associated = 0;
c2a04078
JM		 2203 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2204 reason_code);
3f5285e8
JM		 2205}
2206
2207
2208static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
c2a04078 2209 int reason_code)
3f5285e8
JM		 2210{
2211 struct wpa_driver_nl80211_data *drv = priv;
cfaab580
ZY		 2212 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2213 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2214 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2215 drv->associated = 0;
c2a04078
JM		 2216 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2217 reason_code);
3f5285e8
JM		 2218}
2219
2220
c2a04078
JM		 2221static int wpa_driver_nl80211_authenticate(
2222 void *priv, struct wpa_driver_auth_params *params)
2223{
2224 struct wpa_driver_nl80211_data *drv = priv;
a0b2f99b 2225 int ret = -1, i;
c2a04078
JM		 2226 struct nl_msg *msg;
2227 enum nl80211_auth_type type;
6d6f4bb8 2228 int count = 0;
c2a04078
JM		 2229
2230 drv->associated = 0;
e6b8efeb 2231 os_memset(drv->auth_bssid, 0, ETH_ALEN);
af473088
JM		 2232 /* FIX: IBSS mode */
2233 if (drv->nlmode != NL80211_IFTYPE_STATION)
2234 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
c2a04078 2235
4a867032
JM		 2236 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2237 return -1;
2238
6d6f4bb8 2239retry:
c2a04078
JM		 2240 msg = nlmsg_alloc();
2241 if (!msg)
2242 return -1;
2243
2244 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2245 drv->ifindex);
a0b2f99b 2246
0194fedb
JB		 2247 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2248 NL80211_CMD_AUTHENTICATE, 0);
2249
a0b2f99b
JM		 2250 for (i = 0; i < 4; i++) {
2251 if (!params->wep_key[i])
2252 continue;
642187d6
JM		 2253 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2254 i,
a0b2f99b
JM		 2255 i == params->wep_tx_keyidx, NULL, 0,
2256 params->wep_key[i],
2257 params->wep_key_len[i]);
0194fedb
JB		 2258 if (params->wep_tx_keyidx != i)
2259 continue;
2260 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2261 params->wep_key[i], params->wep_key_len[i])) {
2262 nlmsg_free(msg);
2263 return -1;
2264 }
a0b2f99b
JM		 2265 }
2266
c2a04078
JM		 2267 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2268 if (params->bssid) {
2269 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2270 MAC2STR(params->bssid));
2271 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2272 }
2273 if (params->freq) {
2274 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2275 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2276 }
2277 if (params->ssid) {
2278 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2279 params->ssid, params->ssid_len);
2280 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2281 params->ssid);
2282 }
2283 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2284 if (params->ie)
2285 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2286 /*
2287 * TODO: if multiple auth_alg options enabled, try them one by one if
2288 * the AP rejects authentication due to unknown auth alg
2289 */
abd9fafa 2290 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
c2a04078 2291 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 2292 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
c2a04078 2293 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 2294 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
c2a04078 2295 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 2296 else if (params->auth_alg & WPA_AUTH_ALG_FT)
c2a04078
JM		 2297 type = NL80211_AUTHTYPE_FT;
2298 else
2299 goto nla_put_failure;
2300 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2301 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2302
2303 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2304 msg = NULL;
2305 if (ret) {
2306 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2307 "(%s)", ret, strerror(-ret));
6d6f4bb8
JM		 2308 count++;
2309 if (ret == -EALREADY && count == 1 && params->bssid) {
2310 /*
2311 * mac80211 does not currently accept new
2312 * authentication if we are already authenticated. As a
2313 * workaround, force deauthentication and try again.
2314 */
2315 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2316 "after forced deauthentication");
2317 wpa_driver_nl80211_deauthenticate(
2318 drv, params->bssid,
2319 WLAN_REASON_PREV_AUTH_NOT_VALID);
2320 nlmsg_free(msg);
2321 goto retry;
2322 }
c2a04078
JM		 2323 goto nla_put_failure;
2324 }
2325 ret = 0;
2326 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2327 "successfully");
2328
2329nla_put_failure:
2330 nlmsg_free(msg);
2331 return ret;
2332}
2333
2334
282d5590
JM		 2335struct phy_info_arg {
2336 u16 *num_modes;
2337 struct hostapd_hw_modes *modes;
2338};
2339
2340static int phy_info_handler(struct nl_msg *msg, void *arg)
2341{
2342 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2343 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2344 struct phy_info_arg *phy_info = arg;
2345
2346 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2347
2348 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2349 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2350 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2351 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2352 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2353 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2354 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2355 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2356 };
2357
2358 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2359 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2360 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2361 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2362 };
2363
2364 struct nlattr *nl_band;
2365 struct nlattr *nl_freq;
2366 struct nlattr *nl_rate;
2367 int rem_band, rem_freq, rem_rate;
2368 struct hostapd_hw_modes *mode;
2369 int idx, mode_is_set;
2370
2371 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2372 genlmsg_attrlen(gnlh, 0), NULL);
2373
2374 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2375 return NL_SKIP;
2376
2377 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
e62fb0a0 2378 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
282d5590
JM		 2379 if (!mode)
2380 return NL_SKIP;
2381 phy_info->modes = mode;
2382
2383 mode_is_set = 0;
2384
2385 mode = &phy_info->modes[*(phy_info->num_modes)];
2386 memset(mode, 0, sizeof(*mode));
2387 *(phy_info->num_modes) += 1;
2388
2389 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2390 nla_len(nl_band), NULL);
2391
2392 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2393 mode->ht_capab = nla_get_u16(
2394 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2395 }
2396
be8eb8ab
JM		 2397 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2398 mode->a_mpdu_params |= nla_get_u8(
2399 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2400 0x03;
2401 }
2402
2403 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2404 mode->a_mpdu_params |= nla_get_u8(
2405 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2406 2;
2407 }
2408
08eb154d
JM		 2409 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2410 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2411 u8 *mcs;
2412 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2413 os_memcpy(mode->mcs_set, mcs, 16);
2414 }
2415
282d5590
JM		 2416 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2417 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2418 nla_len(nl_freq), freq_policy);
2419 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2420 continue;
2421 mode->num_channels++;
2422 }
2423
e62fb0a0 2424 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
282d5590
JM		 2425 if (!mode->channels)
2426 return NL_SKIP;
2427
2428 idx = 0;
2429
2430 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2431 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2432 nla_len(nl_freq), freq_policy);
2433 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2434 continue;
2435
2436 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2437 mode->channels[idx].flag = 0;
2438
2439 if (!mode_is_set) {
2440 /* crude heuristic */
2441 if (mode->channels[idx].freq < 4000)
2442 mode->mode = HOSTAPD_MODE_IEEE80211B;
2443 else
2444 mode->mode = HOSTAPD_MODE_IEEE80211A;
2445 mode_is_set = 1;
2446 }
2447
2448 /* crude heuristic */
2449 if (mode->channels[idx].freq < 4000)
5a0ffb5f 2450 if (mode->channels[idx].freq == 2484)
282d5590
JM		 2451 mode->channels[idx].chan = 14;
2452 else
2453 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2454 else
2455 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2456
2457 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2458 mode->channels[idx].flag |=
2459 HOSTAPD_CHAN_DISABLED;
2460 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2461 mode->channels[idx].flag |=
2462 HOSTAPD_CHAN_PASSIVE_SCAN;
2463 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2464 mode->channels[idx].flag |=
2465 HOSTAPD_CHAN_NO_IBSS;
2466 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2467 mode->channels[idx].flag |=
2468 HOSTAPD_CHAN_RADAR;
2469
2470 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2471 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2472 mode->channels[idx].max_tx_power =
2473 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2474
2475 idx++;
2476 }
2477
2478 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2479 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2480 nla_len(nl_rate), rate_policy);
2481 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2482 continue;
2483 mode->num_rates++;
2484 }
2485
e62fb0a0 2486 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
282d5590
JM		 2487 if (!mode->rates)
2488 return NL_SKIP;
2489
2490 idx = 0;
2491
2492 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2493 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2494 nla_len(nl_rate), rate_policy);
2495 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2496 continue;
fb7842aa 2497 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
282d5590
JM		 2498
2499 /* crude heuristic */
2500 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
fb7842aa 2501 mode->rates[idx] > 200)
282d5590
JM		 2502 mode->mode = HOSTAPD_MODE_IEEE80211G;
2503
282d5590
JM		 2504 idx++;
2505 }
2506 }
2507
2508 return NL_SKIP;
2509}
2510
2511static struct hostapd_hw_modes *
2512wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2513{
2514 u16 m;
2515 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2516 int i, mode11g_idx = -1;
2517
2518 /* If only 802.11g mode is included, use it to construct matching
2519 * 802.11b mode data. */
2520
2521 for (m = 0; m < *num_modes; m++) {
2522 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2523 return modes; /* 802.11b already included */
2524 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2525 mode11g_idx = m;
2526 }
2527
2528 if (mode11g_idx < 0)
2529 return modes; /* 2.4 GHz band not supported at all */
2530
2531 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2532 if (nmodes == NULL)
2533 return modes; /* Could not add 802.11b mode */
2534
2535 mode = &nmodes[*num_modes];
2536 os_memset(mode, 0, sizeof(*mode));
2537 (*num_modes)++;
2538 modes = nmodes;
2539
2540 mode->mode = HOSTAPD_MODE_IEEE80211B;
2541
2542 mode11g = &modes[mode11g_idx];
2543 mode->num_channels = mode11g->num_channels;
2544 mode->channels = os_malloc(mode11g->num_channels *
2545 sizeof(struct hostapd_channel_data));
2546 if (mode->channels == NULL) {
2547 (*num_modes)--;
2548 return modes; /* Could not add 802.11b mode */
2549 }
2550 os_memcpy(mode->channels, mode11g->channels,
2551 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2552
2553 mode->num_rates = 0;
fb7842aa 2554 mode->rates = os_malloc(4 * sizeof(int));
282d5590
JM		 2555 if (mode->rates == NULL) {
2556 os_free(mode->channels);
2557 (*num_modes)--;
2558 return modes; /* Could not add 802.11b mode */
2559 }
2560
2561 for (i = 0; i < mode11g->num_rates; i++) {
fb7842aa
JM		 2562 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2563 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
282d5590
JM		 2564 continue;
2565 mode->rates[mode->num_rates] = mode11g->rates[i];
2566 mode->num_rates++;
2567 if (mode->num_rates == 4)
2568 break;
2569 }
2570
2571 if (mode->num_rates == 0) {
2572 os_free(mode->channels);
2573 os_free(mode->rates);
2574 (*num_modes)--;
2575 return modes; /* No 802.11b rates */
2576 }
2577
2578 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2579 "information");
2580
2581 return modes;
2582}
2583
2584
2585static struct hostapd_hw_modes *
2586wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2587{
2588 struct wpa_driver_nl80211_data *drv = priv;
2589 struct nl_msg *msg;
2590 struct phy_info_arg result = {
2591 .num_modes = num_modes,
2592 .modes = NULL,
2593 };
2594
2595 *num_modes = 0;
2596 *flags = 0;
2597
2598 msg = nlmsg_alloc();
2599 if (!msg)
2600 return NULL;
2601
2602 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2603 0, NL80211_CMD_GET_WIPHY, 0);
2604
2605 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2606
2607 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2608 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2609 nla_put_failure:
2610 return NULL;
2611}
2612
2613
2c2010ac
JM		 2614static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2615 const void *data, size_t len,
2616 int encrypt)
2617{
2618 __u8 rtap_hdr[] = {
2619 0x00, 0x00, /* radiotap version */
2620 0x0e, 0x00, /* radiotap length */
2621 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2622 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2623 0x00, /* padding */
2624 0x00, 0x00, /* RX and TX flags to indicate that */
2625 0x00, 0x00, /* this is the injected frame directly */
2626 };
2627 struct iovec iov[2] = {
2628 {
2629 .iov_base = &rtap_hdr,
2630 .iov_len = sizeof(rtap_hdr),
2631 },
2632 {
2633 .iov_base = (void *) data,
2634 .iov_len = len,
2635 }
2636 };
2637 struct msghdr msg = {
2638 .msg_name = NULL,
2639 .msg_namelen = 0,
2640 .msg_iov = iov,
2641 .msg_iovlen = 2,
2642 .msg_control = NULL,
2643 .msg_controllen = 0,
2644 .msg_flags = 0,
2645 };
2646
2647 if (encrypt)
2648 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2649
2650 return sendmsg(drv->monitor_sock, &msg, 0);
2651}
2652
2653
2654static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2655 size_t data_len)
2656{
2657 struct wpa_driver_nl80211_data *drv = priv;
2658 struct ieee80211_mgmt *mgmt;
7a47d567 2659 int encrypt = 1;
2c2010ac
JM		 2660 u16 fc;
2661
2662 mgmt = (struct ieee80211_mgmt *) data;
2663 fc = le_to_host16(mgmt->frame_control);
2664
2665 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2666 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2667 /*
2668 * Only one of the authentication frame types is encrypted.
2669 * In order for static WEP encryption to work properly (i.e.,
2670 * to not encrypt the frame), we need to tell mac80211 about
2671 * the frames that must not be encrypted.
2672 */
2673 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2674 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
7a47d567
JB		 2675 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2676 encrypt = 0;
2c2010ac
JM		 2677 }
2678
7a47d567 2679 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2c2010ac
JM		 2680}
2681
2682
5d674872
JM		 2683static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2684 const u8 *head, size_t head_len,
2685 const u8 *tail, size_t tail_len,
2686 int dtim_period, int beacon_int)
d2440ba0
JM		 2687{
2688 struct wpa_driver_nl80211_data *drv = priv;
2689 struct nl_msg *msg;
2690 u8 cmd = NL80211_CMD_NEW_BEACON;
2691 int ret;
b4fd6fab 2692 int beacon_set;
5d674872 2693 int ifindex = if_nametoindex(ifname);
b4fd6fab
JM		 2694#ifdef HOSTAPD
2695 struct i802_bss *bss;
2696
2697 bss = get_bss(drv, ifindex);
2698 if (bss == NULL)
2699 return -ENOENT;
2700 beacon_set = bss->beacon_set;
2701#else /* HOSTAPD */
2702 beacon_set = drv->beacon_set;
2703#endif /* HOSTAPD */
d2440ba0
JM		 2704
2705 msg = nlmsg_alloc();
2706 if (!msg)
2707 return -ENOMEM;
2708
2709 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
b4fd6fab
JM		 2710 beacon_set);
2711 if (beacon_set)
d2440ba0
JM		 2712 cmd = NL80211_CMD_SET_BEACON;
2713
2714 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2715 0, cmd, 0);
2716 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2717 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
b4fd6fab 2718 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5d674872 2719 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
d2440ba0
JM		 2720 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2721
2722 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2723 if (ret) {
2724 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2725 ret, strerror(-ret));
b4fd6fab
JM		 2726 } else {
2727#ifdef HOSTAPD
2728 bss->beacon_set = 1;
2729#else /* HOSTAPD */
d2440ba0 2730 drv->beacon_set = 1;
b4fd6fab
JM		 2731#endif /* HOSTAPD */
2732 }
d2440ba0
JM		 2733 return ret;
2734 nla_put_failure:
2735 return -ENOBUFS;
2736}
2737
2738
f019981a
JM		 2739static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2740 int freq, int ht_enabled,
2741 int sec_channel_offset)
1581b38b
JM		 2742{
2743 struct nl_msg *msg;
d2440ba0 2744 int ret;
1581b38b
JM		 2745
2746 msg = nlmsg_alloc();
2747 if (!msg)
2748 return -1;
2749
2750 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2751 NL80211_CMD_SET_WIPHY, 0);
2752
2753 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
f019981a
JM		 2754 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2755 if (ht_enabled) {
2756 switch (sec_channel_offset) {
2757 case -1:
2758 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2759 NL80211_CHAN_HT40MINUS);
2760 break;
2761 case 1:
2762 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2763 NL80211_CHAN_HT40PLUS);
2764 break;
2765 default:
2766 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2767 NL80211_CHAN_HT20);
2768 break;
2769 }
2770 }
1581b38b 2771
d2440ba0
JM		 2772 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2773 if (ret == 0)
1581b38b 2774 return 0;
f019981a
JM		 2775 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2776 "%d (%s)", freq, ret, strerror(-ret));
1581b38b
JM		 2777nla_put_failure:
2778 return -1;
2779}
2780
0f4e8b4f
JM		 2781
2782static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2783 struct hostapd_sta_add_params *params)
2784{
2785 struct wpa_driver_nl80211_data *drv = priv;
2786 struct nl_msg *msg;
2787 int ret = -ENOBUFS;
2788
2789 msg = nlmsg_alloc();
2790 if (!msg)
2791 return -ENOMEM;
2792
2793 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2794 0, NL80211_CMD_NEW_STATION, 0);
2795
2796 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2797 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2798 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2799 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2800 params->supp_rates);
2801 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2802 params->listen_interval);
0f4e8b4f
JM		 2803 if (params->ht_capabilities) {
2804 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
fc4e2d95
JM		 2805 sizeof(*params->ht_capabilities),
2806 params->ht_capabilities);
0f4e8b4f 2807 }
0f4e8b4f
JM		 2808
2809 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2810 if (ret)
2811 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2812 "result: %d (%s)", ret, strerror(-ret));
2813 if (ret == -EEXIST)
2814 ret = 0;
2815 nla_put_failure:
2816 return ret;
2817}
2818
2819
2820static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2821{
2822 struct wpa_driver_nl80211_data *drv = priv;
2823 struct nl_msg *msg;
2824 int ret;
2825
2826 msg = nlmsg_alloc();
2827 if (!msg)
2828 return -ENOMEM;
2829
2830 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2831 0, NL80211_CMD_DEL_STATION, 0);
2832
2833 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2834 if_nametoindex(drv->ifname));
2835 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2836
2837 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2838 if (ret == -ENOENT)
2839 return 0;
2840 return ret;
2841 nla_put_failure:
2842 return -ENOBUFS;
2843}
2844
1581b38b 2845
0915d02c
JM		 2846static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2847 int ifidx)
2848{
2849 struct nl_msg *msg;
2850
c6e8e8e4
JM		 2851 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2852
2135f224
JM		 2853#ifdef HOSTAPD
2854 /* stop listening for EAPOL on this interface */
2855 del_ifidx(drv, ifidx);
2856#endif /* HOSTAPD */
2857
0915d02c
JM		 2858 msg = nlmsg_alloc();
2859 if (!msg)
2860 goto nla_put_failure;
2861
2862 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2863 0, NL80211_CMD_DEL_INTERFACE, 0);
2864 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2865
2866 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2867 return;
2868 nla_put_failure:
e748062b 2869 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
0915d02c
JM		 2870}
2871
2872
a35187e7
KH		 2873static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2874 const char *ifname,
2875 enum nl80211_iftype iftype,
fbbfcbac 2876 const u8 *addr, int wds)
0915d02c
JM		 2877{
2878 struct nl_msg *msg, *flags = NULL;
2879 int ifidx;
2880 int ret = -ENOBUFS;
2881
2882 msg = nlmsg_alloc();
2883 if (!msg)
2884 return -1;
2885
2886 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2887 0, NL80211_CMD_NEW_INTERFACE, 0);
2888 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2889 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2890 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2891
2892 if (iftype == NL80211_IFTYPE_MONITOR) {
2893 int err;
2894
2895 flags = nlmsg_alloc();
2896 if (!flags)
2897 goto nla_put_failure;
2898
2899 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2900
2901 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2902
2903 nlmsg_free(flags);
2904
2905 if (err)
2906 goto nla_put_failure;
fbbfcbac
FF		 2907 } else if (wds) {
2908 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
0915d02c
JM		 2909 }
2910
2911 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2912 if (ret) {
2913 nla_put_failure:
a35187e7
KH		 2914 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2915 ifname, ret, strerror(-ret));
0915d02c
JM		 2916 return ret;
2917 }
2918
2919 ifidx = if_nametoindex(ifname);
c6e8e8e4
JM		 2920 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2921 ifname, ifidx);
0915d02c
JM		 2922
2923 if (ifidx <= 0)
2924 return -1;
2925
2135f224
JM		 2926#ifdef HOSTAPD
2927 /* start listening for EAPOL on this interface */
2928 add_ifidx(drv, ifidx);
7bfc47c3 2929#endif /* HOSTAPD */
2135f224 2930
7bfc47c3 2931 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2ac9688e 2932 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
41d931ee
JM		 2933 nl80211_remove_iface(drv, ifidx);
2934 return -1;
2135f224 2935 }
2135f224 2936
0915d02c
JM		 2937 return ifidx;
2938}
22a7c9d7
JM		 2939
2940
a35187e7
KH		 2941static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2942 const char *ifname, enum nl80211_iftype iftype,
fbbfcbac 2943 const u8 *addr, int wds)
a35187e7
KH		 2944{
2945 int ret;
2946
fbbfcbac 2947 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
a35187e7
KH		 2948
2949 /* if error occured and interface exists already */
2950 if (ret == -ENFILE && if_nametoindex(ifname)) {
2951 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2952
2953 /* Try to remove the interface that was already there. */
2954 nl80211_remove_iface(drv, if_nametoindex(ifname));
2955
2956 /* Try to create the interface again */
fbbfcbac
FF		 2957 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2958 wds);
a35187e7
KH		 2959 }
2960
4e5cb1a3
JM		 2961 if (ret >= 0 && drv->disable_11b_rates)
2962 nl80211_disable_11b_rates(drv, ret, 1);
2963
a35187e7
KH		 2964 return ret;
2965}
0915d02c 2966
2135f224 2967
0915d02c
JM		 2968static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2969{
2970 struct ieee80211_hdr *hdr;
f8b1f695
JM		 2971 u16 fc;
2972 union wpa_event_data event;
0915d02c
JM		 2973
2974 hdr = (struct ieee80211_hdr *) buf;
2975 fc = le_to_host16(hdr->frame_control);
2976
f8b1f695
JM		 2977 os_memset(&event, 0, sizeof(event));
2978 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2979 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2980 event.tx_status.dst = hdr->addr1;
2981 event.tx_status.data = buf;
2982 event.tx_status.data_len = len;
2983 event.tx_status.ack = ok;
2984 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
0915d02c
JM		 2985}
2986
2987
4b9841d3 2988static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
0d9fc3d8 2989 u8 *buf, size_t len)
0915d02c 2990{
f8b1f695
JM		 2991 union wpa_event_data event;
2992 os_memset(&event, 0, sizeof(event));
0d9fc3d8 2993 event.rx_from_unknown.frame = buf;
f8b1f695
JM		 2994 event.rx_from_unknown.len = len;
2995 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4b9841d3 2996}
0915d02c 2997
4b9841d3
JM		 2998
2999static void handle_frame(struct wpa_driver_nl80211_data *drv,
2a8b7416 3000 u8 *buf, size_t len, int datarate, int ssi_signal)
4b9841d3
JM		 3001{
3002 struct ieee80211_hdr *hdr;
f8b1f695
JM		 3003 u16 fc;
3004 union wpa_event_data event;
0915d02c
JM		 3005
3006 hdr = (struct ieee80211_hdr *) buf;
3007 fc = le_to_host16(hdr->frame_control);
0915d02c 3008
4b9841d3 3009 switch (WLAN_FC_GET_TYPE(fc)) {
0915d02c 3010 case WLAN_FC_TYPE_MGMT:
f8b1f695
JM		 3011 os_memset(&event, 0, sizeof(event));
3012 event.rx_mgmt.frame = buf;
3013 event.rx_mgmt.frame_len = len;
2a8b7416
JM		 3014 event.rx_mgmt.datarate = datarate;
3015 event.rx_mgmt.ssi_signal = ssi_signal;
f8b1f695 3016 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
0915d02c
JM		 3017 break;
3018 case WLAN_FC_TYPE_CTRL:
3019 /* can only get here with PS-Poll frames */
3020 wpa_printf(MSG_DEBUG, "CTRL");
0d9fc3d8 3021 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3022 break;
3023 case WLAN_FC_TYPE_DATA:
0d9fc3d8 3024 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3025 break;
3026 }
3027}
3028
3029
3030static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3031{
3032 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3033 int len;
3034 unsigned char buf[3000];
3035 struct ieee80211_radiotap_iterator iter;
3036 int ret;
2a8b7416 3037 int datarate = 0, ssi_signal = 0;
4b9841d3 3038 int injected = 0, failed = 0, rxflags = 0;
0915d02c
JM		 3039
3040 len = recv(sock, buf, sizeof(buf), 0);
3041 if (len < 0) {
3042 perror("recv");
3043 return;
3044 }
3045
504e905c
JM		 3046 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3047 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3048 "frame since Probe Request reporting is disabled");
3049 return;
3050 }
3051
0915d02c
JM		 3052 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3053 printf("received invalid radiotap frame\n");
3054 return;
3055 }
3056
0915d02c
JM		 3057 while (1) {
3058 ret = ieee80211_radiotap_iterator_next(&iter);
3059 if (ret == -ENOENT)
3060 break;
3061 if (ret) {
3062 printf("received invalid radiotap frame (%d)\n", ret);
3063 return;
3064 }
3065 switch (iter.this_arg_index) {
3066 case IEEE80211_RADIOTAP_FLAGS:
3067 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3068 len -= 4;
3069 break;
3070 case IEEE80211_RADIOTAP_RX_FLAGS:
3071 rxflags = 1;
3072 break;
3073 case IEEE80211_RADIOTAP_TX_FLAGS:
3074 injected = 1;
3075 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3076 IEEE80211_RADIOTAP_F_TX_FAIL;
3077 break;
3078 case IEEE80211_RADIOTAP_DATA_RETRIES:
3079 break;
3080 case IEEE80211_RADIOTAP_CHANNEL:
2a8b7416 3081 /* TODO: convert from freq/flags to channel number */
0915d02c
JM		 3082 break;
3083 case IEEE80211_RADIOTAP_RATE:
2a8b7416 3084 datarate = *iter.this_arg * 5;
0915d02c
JM		 3085 break;
3086 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2a8b7416 3087 ssi_signal = *iter.this_arg;
0915d02c
JM		 3088 break;
3089 }
3090 }
3091
3092 if (rxflags && injected)
3093 return;
3094
3095 if (!injected)
4b9841d3 3096 handle_frame(drv, buf + iter.max_length,
2a8b7416 3097 len - iter.max_length, datarate, ssi_signal);
0915d02c 3098 else
4b9841d3
JM		 3099 handle_tx_callback(drv->ctx, buf + iter.max_length,
3100 len - iter.max_length, !failed);
0915d02c
JM		 3101}
3102
3103
3104/*
3105 * we post-process the filter code later and rewrite
3106 * this to the offset to the last instruction
3107 */
3108#define PASS 0xFF
3109#define FAIL 0xFE
3110
3111static struct sock_filter msock_filter_insns[] = {
3112 /*
3113 * do a little-endian load of the radiotap length field
3114 */
3115 /* load lower byte into A */
3116 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3117 /* put it into X (== index register) */
3118 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3119 /* load upper byte into A */
3120 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3121 /* left-shift it by 8 */
3122 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3123 /* or with X */
3124 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3125 /* put result into X */
3126 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3127
3128 /*
3129 * Allow management frames through, this also gives us those
3130 * management frames that we sent ourselves with status
3131 */
3132 /* load the lower byte of the IEEE 802.11 frame control field */
3133 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3134 /* mask off frame type and version */
3135 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3136 /* accept frame if it's both 0, fall through otherwise */
3137 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3138
3139 /*
3140 * TODO: add a bit to radiotap RX flags that indicates
3141 * that the sending station is not associated, then
3142 * add a filter here that filters on our DA and that flag
3143 * to allow us to deauth frames to that bad station.
3144 *
3145 * Not a regression -- we didn't do it before either.
3146 */
3147
3148#if 0
3149 /*
fbbfcbac 3150 * drop non-data frames
0915d02c
JM		 3151 */
3152 /* load the lower byte of the frame control field */
3153 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3154 /* mask off QoS bit */
3155 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3156 /* drop non-data frames */
3157 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
fbbfcbac 3158#endif
0915d02c 3159 /* load the upper byte of the frame control field */
fbbfcbac 3160 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
0915d02c
JM		 3161 /* mask off toDS/fromDS */
3162 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
fbbfcbac
FF		 3163 /* accept WDS frames */
3164 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
0915d02c
JM		 3165
3166 /*
3167 * add header length to index
3168 */
3169 /* load the lower byte of the frame control field */
3170 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3171 /* mask off QoS bit */
3172 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3173 /* right shift it by 6 to give 0 or 2 */
3174 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3175 /* add data frame header length */
3176 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3177 /* add index, was start of 802.11 header */
3178 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3179 /* move to index, now start of LL header */
3180 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3181
3182 /*
3183 * Accept empty data frames, we use those for
3184 * polling activity.
3185 */
3186 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3187 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3188
3189 /*
3190 * Accept EAPOL frames
3191 */
3192 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3193 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3194 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3195 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3196
3197 /* keep these last two statements or change the code below */
3198 /* return 0 == "DROP" */
3199 BPF_STMT(BPF_RET | BPF_K, 0),
3200 /* return ~0 == "keep all" */
3201 BPF_STMT(BPF_RET | BPF_K, ~0),
3202};
3203
3204static struct sock_fprog msock_filter = {
3205 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3206 .filter = msock_filter_insns,
3207};
3208
3209
3210static int add_monitor_filter(int s)
3211{
3212 int idx;
3213
3214 /* rewrite all PASS/FAIL jump offsets */
3215 for (idx = 0; idx < msock_filter.len; idx++) {
3216 struct sock_filter *insn = &msock_filter_insns[idx];
3217
3218 if (BPF_CLASS(insn->code) == BPF_JMP) {
3219 if (insn->code == (BPF_JMP|BPF_JA)) {
3220 if (insn->k == PASS)
3221 insn->k = msock_filter.len - idx - 2;
3222 else if (insn->k == FAIL)
3223 insn->k = msock_filter.len - idx - 3;
3224 }
3225
3226 if (insn->jt == PASS)
3227 insn->jt = msock_filter.len - idx - 2;
3228 else if (insn->jt == FAIL)
3229 insn->jt = msock_filter.len - idx - 3;
3230
3231 if (insn->jf == PASS)
3232 insn->jf = msock_filter.len - idx - 2;
3233 else if (insn->jf == FAIL)
3234 insn->jf = msock_filter.len - idx - 3;
3235 }
3236 }
3237
3238 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3239 &msock_filter, sizeof(msock_filter))) {
3240 perror("SO_ATTACH_FILTER");
3241 return -1;
3242 }
3243
3244 return 0;
3245}
3246
3247
460456f8
JM		 3248static void nl80211_remove_monitor_interface(
3249 struct wpa_driver_nl80211_data *drv)
3250{
3251 if (drv->monitor_ifidx >= 0) {
3252 nl80211_remove_iface(drv, drv->monitor_ifidx);
3253 drv->monitor_ifidx = -1;
3254 }
504e905c
JM		 3255 if (drv->monitor_sock >= 0) {
3256 eloop_unregister_read_sock(drv->monitor_sock);
3257 close(drv->monitor_sock);
3258 drv->monitor_sock = -1;
3259 }
460456f8
JM		 3260}
3261
3262
0915d02c
JM		 3263static int
3264nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3265{
3266 char buf[IFNAMSIZ];
3267 struct sockaddr_ll ll;
3268 int optval;
3269 socklen_t optlen;
0915d02c
JM		 3270
3271 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3272 buf[IFNAMSIZ - 1] = '\0';
3273
3274 drv->monitor_ifidx =
fbbfcbac
FF		 3275 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3276 0);
0915d02c
JM		 3277
3278 if (drv->monitor_ifidx < 0)
3279 return -1;
3280
34f2f814 3281 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
0915d02c 3282 goto error;
0915d02c
JM		 3283
3284 memset(&ll, 0, sizeof(ll));
3285 ll.sll_family = AF_PACKET;
3286 ll.sll_ifindex = drv->monitor_ifidx;
3287 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3288 if (drv->monitor_sock < 0) {
3289 perror("socket[PF_PACKET,SOCK_RAW]");
3290 goto error;
3291 }
3292
3293 if (add_monitor_filter(drv->monitor_sock)) {
3294 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3295 "interface; do filtering in user space");
3296 /* This works, but will cost in performance. */
3297 }
3298
2135f224 3299 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
0915d02c
JM		 3300 perror("monitor socket bind");
3301 goto error;
3302 }
3303
3304 optlen = sizeof(optval);
3305 optval = 20;
3306 if (setsockopt
3307 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3308 perror("Failed to set socket priority");
3309 goto error;
3310 }
3311
3312 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3313 drv, NULL)) {
3314 printf("Could not register monitor read socket\n");
3315 goto error;
3316 }
3317
3318 return 0;
3319 error:
460456f8 3320 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 3321 return -1;
3322}
3323
db149ac9
JM		 3324
3325static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3326
3327static int wpa_driver_nl80211_hapd_send_eapol(
3328 void *priv, const u8 *addr, const u8 *data,
3329 size_t data_len, int encrypt, const u8 *own_addr)
3330{
3331 struct wpa_driver_nl80211_data *drv = priv;
3332 struct ieee80211_hdr *hdr;
3333 size_t len;
3334 u8 *pos;
3335 int res;
3336#if 0 /* FIX */
0de39516 3337 int qos = sta->flags & WPA_STA_WMM;
db149ac9
JM		 3338#else
3339 int qos = 0;
3340#endif
3341
3342 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3343 data_len;
3344 hdr = os_zalloc(len);
3345 if (hdr == NULL) {
3346 printf("malloc() failed for i802_send_data(len=%lu)\n",
3347 (unsigned long) len);
3348 return -1;
3349 }
3350
3351 hdr->frame_control =
3352 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3353 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3354 if (encrypt)
3355 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3356#if 0 /* To be enabled if qos determination is added above */
3357 if (qos) {
3358 hdr->frame_control |=
3359 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3360 }
3361#endif
3362
3363 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3364 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3365 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3366 pos = (u8 *) (hdr + 1);
3367
3368#if 0 /* To be enabled if qos determination is added above */
3369 if (qos) {
3370 /* add an empty QoS header if needed */
3371 pos[0] = 0;
3372 pos[1] = 0;
3373 pos += 2;
3374 }
3375#endif
3376
3377 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3378 pos += sizeof(rfc1042_header);
3379 WPA_PUT_BE16(pos, ETH_P_PAE);
3380 pos += 2;
3381 memcpy(pos, data, data_len);
3382
3383 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3384 if (res < 0) {
3385 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3386 "failed: %d (%s)",
3387 (unsigned long) len, errno, strerror(errno));
3388 }
7bf12757 3389 os_free(hdr);
db149ac9
JM		 3390
3391 return res;
3392}
3393
a8d6ffa4 3394
7e76ee9c
JM		 3395static u32 sta_flags_nl80211(int flags)
3396{
3397 u32 f = 0;
3398
0de39516 3399 if (flags & WPA_STA_AUTHORIZED)
7e76ee9c 3400 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
0de39516 3401 if (flags & WPA_STA_WMM)
7e76ee9c 3402 f |= BIT(NL80211_STA_FLAG_WME);
0de39516 3403 if (flags & WPA_STA_SHORT_PREAMBLE)
7e76ee9c 3404 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
0de39516 3405 if (flags & WPA_STA_MFP)
7e76ee9c
JM		 3406 f |= BIT(NL80211_STA_FLAG_MFP);
3407
3408 return f;
3409}
3410
3411
a8d6ffa4
JM		 3412static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3413 int total_flags, int flags_or,
3414 int flags_and)
3415{
3416 struct wpa_driver_nl80211_data *drv = priv;
3417 struct nl_msg *msg, *flags = NULL;
7e76ee9c 3418 struct nl80211_sta_flag_update upd;
a8d6ffa4
JM		 3419
3420 msg = nlmsg_alloc();
3421 if (!msg)
3422 return -ENOMEM;
3423
3424 flags = nlmsg_alloc();
3425 if (!flags) {
3426 nlmsg_free(msg);
3427 return -ENOMEM;
3428 }
3429
3430 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3431 0, NL80211_CMD_SET_STATION, 0);
3432
3433 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3434 if_nametoindex(drv->ifname));
3435 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3436
7e76ee9c
JM		 3437 /*
3438 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3439 * can be removed eventually.
3440 */
0de39516 3441 if (total_flags & WPA_STA_AUTHORIZED)
a8d6ffa4
JM		 3442 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3443
0de39516 3444 if (total_flags & WPA_STA_WMM)
a8d6ffa4
JM		 3445 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3446
0de39516 3447 if (total_flags & WPA_STA_SHORT_PREAMBLE)
a8d6ffa4
JM		 3448 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3449
0de39516 3450 if (total_flags & WPA_STA_MFP)
a8d6ffa4
JM		 3451 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3452
3453 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3454 goto nla_put_failure;
3455
7e76ee9c
JM		 3456 os_memset(&upd, 0, sizeof(upd));
3457 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3458 upd.set = sta_flags_nl80211(flags_or);
3459 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3460
a8d6ffa4
JM		 3461 nlmsg_free(flags);
3462
3463 return send_and_recv_msgs(drv, msg, NULL, NULL);
3464 nla_put_failure:
3465 nlmsg_free(flags);
3466 return -ENOBUFS;
3467}
3468
0915d02c 3469
1581b38b
JM		 3470static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3471 struct wpa_driver_associate_params *params)
3472{
3473 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
f019981a 3474 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
460456f8 3475 nl80211_remove_monitor_interface(drv);
1581b38b 3476 return -1;
0915d02c 3477 }
1581b38b
JM		 3478
3479 /* TODO: setup monitor interface (and add code somewhere to remove this
3480 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
1581b38b
JM		 3481
3482 return 0;
3483}
1581b38b
JM		 3484
3485
5cc4d64b
JM		 3486static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3487{
3488 struct nl_msg *msg;
3489 int ret = -1;
3490
3491 msg = nlmsg_alloc();
3492 if (!msg)
3493 return -1;
3494
3495 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3496 NL80211_CMD_LEAVE_IBSS, 0);
3497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3498 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3499 msg = NULL;
3500 if (ret) {
3501 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3502 "(%s)", ret, strerror(-ret));
3503 goto nla_put_failure;
3504 }
3505
3506 ret = 0;
3507 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3508
3509nla_put_failure:
3510 nlmsg_free(msg);
3511 return ret;
3512}
3513
3514
3515static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3516 struct wpa_driver_associate_params *params)
3517{
3518 struct nl_msg *msg;
3519 int ret = -1;
3520 int count = 0;
3521
3522 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3523
3524 if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3525 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3526 "IBSS mode");
3527 return -1;
3528 }
3529
3530retry:
3531 msg = nlmsg_alloc();
3532 if (!msg)
3533 return -1;
3534
3535 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3536 NL80211_CMD_JOIN_IBSS, 0);
3537 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3538
3539 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3540 goto nla_put_failure;
3541
3542 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3543 params->ssid, params->ssid_len);
3544 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3545 params->ssid);
3546 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3547 drv->ssid_len = params->ssid_len;
3548
3549 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3551
3552 ret = nl80211_set_conn_keys(params, msg);
3553 if (ret)
3554 goto nla_put_failure;
3555
a95795ad
JM		 3556 if (params->wpa_ie) {
3557 wpa_hexdump(MSG_DEBUG,
3558 " * Extra IEs for Beacon/Probe Response frames",
3559 params->wpa_ie, params->wpa_ie_len);
3560 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3561 params->wpa_ie);
3562 }
3563
5cc4d64b
JM		 3564 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3565 msg = NULL;
3566 if (ret) {
3567 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3568 ret, strerror(-ret));
3569 count++;
3570 if (ret == -EALREADY && count == 1) {
3571 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3572 "forced leave");
3573 nl80211_leave_ibss(drv);
3574 nlmsg_free(msg);
3575 goto retry;
3576 }
3577
3578 goto nla_put_failure;
3579 }
3580 ret = 0;
3581 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3582
3583nla_put_failure:
3584 nlmsg_free(msg);
3585 return ret;
3586}
3587
3588
cfaab580
ZY		 3589static int wpa_driver_nl80211_connect(
3590 struct wpa_driver_nl80211_data *drv,
3591 struct wpa_driver_associate_params *params)
3592{
3593 struct nl_msg *msg;
3594 enum nl80211_auth_type type;
3595 int ret = 0;
3596
3597 msg = nlmsg_alloc();
3598 if (!msg)
3599 return -1;
3600
3601 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3602 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3603 NL80211_CMD_CONNECT, 0);
3604
3605 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3606 if (params->bssid) {
3607 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3608 MAC2STR(params->bssid));
3609 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3610 }
3611 if (params->freq) {
3612 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3613 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3614 }
3615 if (params->ssid) {
3616 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3617 params->ssid, params->ssid_len);
3618 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3619 params->ssid);
3620 if (params->ssid_len > sizeof(drv->ssid))
3621 goto nla_put_failure;
3622 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3623 drv->ssid_len = params->ssid_len;
3624 }
3625 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3626 if (params->wpa_ie)
3627 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3628 params->wpa_ie);
3629
abd9fafa 3630 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
cfaab580 3631 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 3632 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
cfaab580 3633 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 3634 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
cfaab580 3635 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 3636 else if (params->auth_alg & WPA_AUTH_ALG_FT)
cfaab580
ZY		 3637 type = NL80211_AUTHTYPE_FT;
3638 else
3639 goto nla_put_failure;
3640
3641 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3642 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3643
3644 if (params->wpa_ie && params->wpa_ie_len) {
3645 enum nl80211_wpa_versions ver;
3646
3647 if (params->wpa_ie[0] == WLAN_EID_RSN)
3648 ver = NL80211_WPA_VERSION_2;
3649 else
3650 ver = NL80211_WPA_VERSION_1;
3651
3652 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3653 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3654 }
3655
3656 if (params->pairwise_suite != CIPHER_NONE) {
c1bb3e0a 3657 int cipher;
cfaab580
ZY		 3658
3659 switch (params->pairwise_suite) {
3660 case CIPHER_WEP40:
3661 cipher = WLAN_CIPHER_SUITE_WEP40;
3662 break;
3663 case CIPHER_WEP104:
3664 cipher = WLAN_CIPHER_SUITE_WEP104;
3665 break;
3666 case CIPHER_CCMP:
3667 cipher = WLAN_CIPHER_SUITE_CCMP;
3668 break;
3669 case CIPHER_TKIP:
3670 default:
3671 cipher = WLAN_CIPHER_SUITE_TKIP;
3672 break;
3673 }
3674 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3675 }
3676
3677 if (params->group_suite != CIPHER_NONE) {
c1bb3e0a 3678 int cipher;
cfaab580
ZY		 3679
3680 switch (params->group_suite) {
3681 case CIPHER_WEP40:
3682 cipher = WLAN_CIPHER_SUITE_WEP40;
3683 break;
3684 case CIPHER_WEP104:
3685 cipher = WLAN_CIPHER_SUITE_WEP104;
3686 break;
3687 case CIPHER_CCMP:
3688 cipher = WLAN_CIPHER_SUITE_CCMP;
3689 break;
3690 case CIPHER_TKIP:
3691 default:
3692 cipher = WLAN_CIPHER_SUITE_TKIP;
3693 break;
3694 }
3695 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3696 }
3697
3698 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3699 params->key_mgmt_suite == KEY_MGMT_PSK) {
3700 int mgmt = WLAN_AKM_SUITE_PSK;
3701
3702 switch (params->key_mgmt_suite) {
3703 case KEY_MGMT_802_1X:
3704 mgmt = WLAN_AKM_SUITE_8021X;
3705 break;
3706 case KEY_MGMT_PSK:
3707 default:
3708 mgmt = WLAN_AKM_SUITE_PSK;
3709 break;
3710 }
3711 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3712 }
3713
3714 ret = nl80211_set_conn_keys(params, msg);
3715 if (ret)
3716 goto nla_put_failure;
3717
3718 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3719 msg = NULL;
3720 if (ret) {
3721 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3722 "(%s)", ret, strerror(-ret));
3723 goto nla_put_failure;
3724 }
3725 ret = 0;
3726 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3727
3728nla_put_failure:
3729 nlmsg_free(msg);
3730 return ret;
3731
3732}
3733
3734
c2a04078
JM		 3735static int wpa_driver_nl80211_associate(
3736 void *priv, struct wpa_driver_associate_params *params)
3737{
3738 struct wpa_driver_nl80211_data *drv = priv;
3739 int ret = -1;
3740 struct nl_msg *msg;
3741
5cc4d64b 3742 if (params->mode == IEEE80211_MODE_AP)
1581b38b 3743 return wpa_driver_nl80211_ap(drv, params);
1581b38b 3744
5cc4d64b
JM		 3745 if (params->mode == IEEE80211_MODE_IBSS)
3746 return wpa_driver_nl80211_ibss(drv, params);
3747
4a867032
JM		 3748 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3749 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3750 return -1;
cfaab580 3751 return wpa_driver_nl80211_connect(drv, params);
4a867032 3752 }
cfaab580 3753
c2a04078
JM		 3754 drv->associated = 0;
3755
3756 msg = nlmsg_alloc();
3757 if (!msg)
3758 return -1;
3759
3760 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3761 drv->ifindex);
3762 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3763 NL80211_CMD_ASSOCIATE, 0);
3764
3765 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3766 if (params->bssid) {
3767 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3768 MAC2STR(params->bssid));
3769 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3770 }
3771 if (params->freq) {
3772 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3773 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4832ecd7
JM		 3774 drv->assoc_freq = params->freq;
3775 } else
3776 drv->assoc_freq = 0;
c2a04078
JM		 3777 if (params->ssid) {
3778 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3779 params->ssid, params->ssid_len);
3780 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3781 params->ssid);
fd05d64e
JM		 3782 if (params->ssid_len > sizeof(drv->ssid))
3783 goto nla_put_failure;
3784 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3785 drv->ssid_len = params->ssid_len;
c2a04078
JM		 3786 }
3787 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3788 if (params->wpa_ie)
3789 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3790 params->wpa_ie);
3791
e572fa33
JM		 3792#ifdef CONFIG_IEEE80211W
3793 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3794 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3795#endif /* CONFIG_IEEE80211W */
3796
01652550
JM		 3797 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3798
62fa124c
JM		 3799 if (params->prev_bssid) {
3800 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3801 MAC2STR(params->prev_bssid));
3802 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3803 params->prev_bssid);
3804 }
3805
c2a04078
JM		 3806 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3807 msg = NULL;
3808 if (ret) {
3809 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3810 "(%s)", ret, strerror(-ret));
8856462d 3811 nl80211_dump_scan(drv);
c2a04078
JM		 3812 goto nla_put_failure;
3813 }
3814 ret = 0;
3815 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3816 "successfully");
3817
3818nla_put_failure:
3819 nlmsg_free(msg);
3820 return ret;
3821}
3f5285e8
JM		 3822
3823
ad1e68e6
JM		 3824static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3825 int ifindex, int mode)
3f5285e8 3826{
3f5285e8 3827 struct nl_msg *msg;
ad1e68e6
JM		 3828 int ret = -ENOBUFS;
3829
3830 msg = nlmsg_alloc();
3831 if (!msg)
3832 return -ENOMEM;
3833
3834 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3835 0, NL80211_CMD_SET_INTERFACE, 0);
3836 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3837 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3838
3839 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3840 if (!ret)
3841 return 0;
3842nla_put_failure:
3843 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3844 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3845 return ret;
3846}
3847
3848
3849static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3850{
3851 struct wpa_driver_nl80211_data *drv = priv;
3852 int ret = -1;
1581b38b
JM		 3853 int nlmode;
3854
3855 switch (mode) {
3856 case 0:
3857 nlmode = NL80211_IFTYPE_STATION;
3858 break;
3859 case 1:
3860 nlmode = NL80211_IFTYPE_ADHOC;
3861 break;
3862 case 2:
3863 nlmode = NL80211_IFTYPE_AP;
3864 break;
3865 default:
3866 return -1;
3867 }
3f5285e8 3868
ad1e68e6
JM		 3869 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3870 drv->nlmode = nlmode;
460456f8
JM		 3871 ret = 0;
3872 goto done;
ad1e68e6 3873 }
3f5285e8 3874
460456f8 3875 if (nlmode == drv->nlmode) {
c6e8e8e4
JM		 3876 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3877 "requested mode - ignore error");
460456f8
JM		 3878 ret = 0;
3879 goto done; /* Already in the requested mode */
3880 }
3f5285e8 3881
3f5285e8
JM		 3882 /* mac80211 doesn't allow mode changes while the device is up, so
3883 * take the device down, try to set the mode again, and bring the
3884 * device back up.
3885 */
34f2f814 3886 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0) == 0) {
3f5285e8 3887 /* Try to set the mode again while the interface is down */
ad1e68e6 3888 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
34f2f814 3889 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1))
2135f224 3890 ret = -1;
3f5285e8
JM		 3891 }
3892
c6e8e8e4
JM		 3893 if (!ret) {
3894 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3895 "interface is down");
ad1e68e6 3896 drv->nlmode = nlmode;
c6e8e8e4 3897 }
ad1e68e6 3898
460456f8 3899done:
460456f8
JM		 3900 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3901 /* Setup additional AP mode functionality if needed */
3902 if (drv->monitor_ifidx < 0 &&
3903 nl80211_create_monitor_interface(drv))
3904 return -1;
3905 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3906 /* Remove additional AP mode functionality */
3907 nl80211_remove_monitor_interface(drv);
af473088
JM		 3908#ifndef HOSTAPD
3909 drv->beacon_set = 0;
3910#endif /* HOSTAPD */
460456f8 3911 }
460456f8 3912
c6e8e8e4
JM		 3913 if (ret)
3914 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3915 "from %d failed", nlmode, drv->nlmode);
3916
3f5285e8
JM		 3917 return ret;
3918}
3919
3920
3f5285e8
JM		 3921static int wpa_driver_nl80211_get_capa(void *priv,
3922 struct wpa_driver_capa *capa)
3923{
3924 struct wpa_driver_nl80211_data *drv = priv;
3925 if (!drv->has_capability)
3926 return -1;
3927 os_memcpy(capa, &drv->capa, sizeof(*capa));
3928 return 0;
3929}
3930
3931
3932static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3933{
3934 struct wpa_driver_nl80211_data *drv = priv;
3935
3936 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3937 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3938 drv->operstate = state;
08063178 3939 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
e2d02c29 3940 state ? IF_OPER_UP : IF_OPER_DORMANT);
3f5285e8
JM		 3941}
3942
01652550
JM		 3943
3944static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3945{
3946 struct wpa_driver_nl80211_data *drv = priv;
3947 struct nl_msg *msg;
3948 struct nl80211_sta_flag_update upd;
3949
3950 msg = nlmsg_alloc();
3951 if (!msg)
3952 return -ENOMEM;
3953
3954 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3955 0, NL80211_CMD_SET_STATION, 0);
3956
3957 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3958 if_nametoindex(drv->ifname));
3959 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3960
3961 os_memset(&upd, 0, sizeof(upd));
3962 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3963 if (authorized)
3964 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3965 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3966
3967 return send_and_recv_msgs(drv, msg, NULL, NULL);
3968 nla_put_failure:
3969 return -ENOBUFS;
3970}
3971
3f5285e8 3972
c5121837
JM		 3973#ifdef HOSTAPD
3974
c5121837 3975static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
b4fd6fab 3976 int ifindex)
c5121837
JM		 3977{
3978 struct i802_bss *bss = &drv->bss;
3979 while (bss) {
b4fd6fab 3980 if (ifindex == bss->ifindex)
c5121837
JM		 3981 return bss;
3982 bss = bss->next;
3983 }
b4fd6fab 3984 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
c5121837
JM		 3985 return NULL;
3986}
3987
3988
3989static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3990{
3991 int i;
3992 int *old;
3993
3994 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3995 ifidx);
3996 for (i = 0; i < drv->num_if_indices; i++) {
3997 if (drv->if_indices[i] == 0) {
3998 drv->if_indices[i] = ifidx;
3999 return;
4000 }
4001 }
4002
4003 if (drv->if_indices != drv->default_if_indices)
4004 old = drv->if_indices;
4005 else
4006 old = NULL;
4007
7bf12757
JM		 4008 drv->if_indices = os_realloc(old,
4009 sizeof(int) * (drv->num_if_indices + 1));
c5121837
JM		 4010 if (!drv->if_indices) {
4011 if (!old)
4012 drv->if_indices = drv->default_if_indices;
4013 else
4014 drv->if_indices = old;
4015 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4016 "interfaces");
4017 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4018 return;
4019 }
4020 drv->if_indices[drv->num_if_indices] = ifidx;
4021 drv->num_if_indices++;
4022}
4023
4024
4025static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4026{
4027 int i;
4028
4029 for (i = 0; i < drv->num_if_indices; i++) {
4030 if (drv->if_indices[i] == ifidx) {
4031 drv->if_indices[i] = 0;
4032 break;
4033 }
4034 }
4035}
4036
4037
4038static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4039{
4040 int i;
4041
4042 for (i = 0; i < drv->num_if_indices; i++)
4043 if (drv->if_indices[i] == ifidx)
4044 return 1;
4045
4046 return 0;
4047}
4048
4049
c5121837
JM		 4050static inline int min_int(int a, int b)
4051{
4052 if (a < b)
4053 return a;
4054 return b;
4055}
4056
4057
4058static int get_key_handler(struct nl_msg *msg, void *arg)
4059{
4060 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4061 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4062
4063 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4064 genlmsg_attrlen(gnlh, 0), NULL);
4065
4066 /*
4067 * TODO: validate the key index and mac address!
4068 * Otherwise, there's a race condition as soon as
4069 * the kernel starts sending key notifications.
4070 */
4071
4072 if (tb[NL80211_ATTR_KEY_SEQ])
4073 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4074 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4075 return NL_SKIP;
4076}
4077
4078
4079static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4080 int idx, u8 *seq)
4081{
4082 struct wpa_driver_nl80211_data *drv = priv;
4083 struct nl_msg *msg;
4084
4085 msg = nlmsg_alloc();
4086 if (!msg)
4087 return -ENOMEM;
4088
4089 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4090 0, NL80211_CMD_GET_KEY, 0);
4091
4092 if (addr)
4093 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4094 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4095 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4096
4097 memset(seq, 0, 6);
4098
4099 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4100 nla_put_failure:
4101 return -ENOBUFS;
4102}
4103
4104
4105static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4106 int mode)
4107{
4108 struct wpa_driver_nl80211_data *drv = priv;
4109 struct nl_msg *msg;
4110 u8 rates[NL80211_MAX_SUPP_RATES];
4111 u8 rates_len = 0;
4112 int i;
4113
4114 msg = nlmsg_alloc();
4115 if (!msg)
4116 return -ENOMEM;
4117
4118 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4119 NL80211_CMD_SET_BSS, 0);
4120
4121 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4122 rates[rates_len++] = basic_rates[i] / 5;
4123
4124 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4125
4126 /* TODO: multi-BSS support */
4127 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4128
4129 return send_and_recv_msgs(drv, msg, NULL, NULL);
4130 nla_put_failure:
4131 return -ENOBUFS;
4132}
4133
4134
c5121837
JM		 4135/* Set kernel driver on given frequency (MHz) */
4136static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4137{
4138 struct wpa_driver_nl80211_data *drv = priv;
f019981a
JM		 4139 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4140 freq->sec_channel_offset);
c5121837
JM		 4141}
4142
4143
4144static int i802_set_rts(void *priv, int rts)
4145{
4146 struct wpa_driver_nl80211_data *drv = priv;
ad649451
JM		 4147 struct nl_msg *msg;
4148 int ret = -ENOBUFS;
4149 u32 val;
c5121837 4150
ad649451
JM		 4151 msg = nlmsg_alloc();
4152 if (!msg)
4153 return -ENOMEM;
c5121837 4154
ad649451
JM		 4155 if (rts >= 2347)
4156 val = (u32) -1;
4157 else
4158 val = rts;
c5121837 4159
ad649451
JM		 4160 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4161 0, NL80211_CMD_SET_WIPHY, 0);
4162 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4163 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4164
4165 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4166 if (!ret)
4167 return 0;
4168nla_put_failure:
4169 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4170 "%d (%s)", rts, ret, strerror(-ret));
4171 return ret;
c5121837
JM		 4172}
4173
4174
4175static int i802_set_frag(void *priv, int frag)
4176{
4177 struct wpa_driver_nl80211_data *drv = priv;
ad649451
JM		 4178 struct nl_msg *msg;
4179 int ret = -ENOBUFS;
4180 u32 val;
c5121837 4181
ad649451
JM		 4182 msg = nlmsg_alloc();
4183 if (!msg)
4184 return -ENOMEM;
c5121837 4185
ad649451
JM		 4186 if (frag >= 2346)
4187 val = (u32) -1;
4188 else
4189 val = frag;
c5121837 4190
ad649451
JM		 4191 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4192 0, NL80211_CMD_SET_WIPHY, 0);
4193 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4194 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4195
4196 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4197 if (!ret)
4198 return 0;
4199nla_put_failure:
4200 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4201 "%d: %d (%s)", frag, ret, strerror(-ret));
4202 return ret;
c5121837
JM		 4203}
4204
4205
c5121837
JM		 4206static int i802_flush(void *priv)
4207{
4208 struct wpa_driver_nl80211_data *drv = priv;
4209 struct nl_msg *msg;
4210
4211 msg = nlmsg_alloc();
4212 if (!msg)
4213 return -1;
4214
4215 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4216 0, NL80211_CMD_DEL_STATION, 0);
4217
4218 /*
4219 * XXX: FIX! this needs to flush all VLANs too
4220 */
4221 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4222 if_nametoindex(drv->ifname));
4223
4224 return send_and_recv_msgs(drv, msg, NULL, NULL);
4225 nla_put_failure:
4226 return -ENOBUFS;
4227}
4228
4229
4230static int get_sta_handler(struct nl_msg *msg, void *arg)
4231{
4232 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4233 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4234 struct hostap_sta_driver_data *data = arg;
4235 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4236 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4237 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4238 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4239 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4240 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4241 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4242 };
4243
4244 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4245 genlmsg_attrlen(gnlh, 0), NULL);
4246
4247 /*
4248 * TODO: validate the interface and mac address!
4249 * Otherwise, there's a race condition as soon as
4250 * the kernel starts sending station notifications.
4251 */
4252
4253 if (!tb[NL80211_ATTR_STA_INFO]) {
4254 wpa_printf(MSG_DEBUG, "sta stats missing!");
4255 return NL_SKIP;
4256 }
4257 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4258 tb[NL80211_ATTR_STA_INFO],
4259 stats_policy)) {
4260 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4261 return NL_SKIP;
4262 }
4263
4264 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4265 data->inactive_msec =
4266 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4267 if (stats[NL80211_STA_INFO_RX_BYTES])
4268 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4269 if (stats[NL80211_STA_INFO_TX_BYTES])
4270 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4271 if (stats[NL80211_STA_INFO_RX_PACKETS])
4272 data->rx_packets =
4273 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4274 if (stats[NL80211_STA_INFO_TX_PACKETS])
4275 data->tx_packets =
4276 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4277
4278 return NL_SKIP;
4279}
4280
4281static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4282 const u8 *addr)
4283{
4284 struct wpa_driver_nl80211_data *drv = priv;
4285 struct nl_msg *msg;
4286
4287 os_memset(data, 0, sizeof(*data));
4288 msg = nlmsg_alloc();
4289 if (!msg)
4290 return -ENOMEM;
4291
4292 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4293 0, NL80211_CMD_GET_STATION, 0);
4294
4295 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4296 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4297
4298 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4299 nla_put_failure:
4300 return -ENOBUFS;
4301}
4302
4303
c5121837
JM		 4304static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4305 int cw_min, int cw_max, int burst_time)
4306{
4307 struct wpa_driver_nl80211_data *drv = priv;
4308 struct nl_msg *msg;
4309 struct nlattr *txq, *params;
4310
4311 msg = nlmsg_alloc();
4312 if (!msg)
4313 return -1;
4314
4315 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4316 0, NL80211_CMD_SET_WIPHY, 0);
4317
4318 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4319
4320 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4321 if (!txq)
4322 goto nla_put_failure;
4323
4324 /* We are only sending parameters for a single TXQ at a time */
4325 params = nla_nest_start(msg, 1);
4326 if (!params)
4327 goto nla_put_failure;
4328
4329 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4330 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4331 * 32 usec, so need to convert the value here. */
4332 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4333 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4334 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4335 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4336
4337 nla_nest_end(msg, params);
4338
4339 nla_nest_end(msg, txq);
4340
4341 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4342 return 0;
4343 nla_put_failure:
4344 return -1;
4345}
4346
4347
c5121837
JM		 4348static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4349{
4350 struct wpa_driver_nl80211_data *drv = priv;
4351 struct nl_msg *msg;
4352
4353 msg = nlmsg_alloc();
4354 if (!msg)
4355 return -ENOMEM;
4356
4357 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4358 NL80211_CMD_SET_BSS, 0);
4359
4360 if (cts >= 0)
4361 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4362 if (preamble >= 0)
4363 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4364 if (slot >= 0)
4365 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4366
4367 /* TODO: multi-BSS support */
4368 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4369
4370 return send_and_recv_msgs(drv, msg, NULL, NULL);
4371 nla_put_failure:
4372 return -ENOBUFS;
4373}
4374
4375
4376static int i802_set_cts_protect(void *priv, int value)
4377{
4378 return i802_set_bss(priv, value, -1, -1);
4379}
4380
4381
4382static int i802_set_preamble(void *priv, int value)
4383{
4384 return i802_set_bss(priv, -1, value, -1);
4385}
4386
4387
4388static int i802_set_short_slot_time(void *priv, int value)
4389{
4390 return i802_set_bss(priv, -1, -1, value);
4391}
4392
4393
c5121837
JM		 4394static int i802_set_sta_vlan(void *priv, const u8 *addr,
4395 const char *ifname, int vlan_id)
4396{
4397 struct wpa_driver_nl80211_data *drv = priv;
4398 struct nl_msg *msg;
4399
4400 msg = nlmsg_alloc();
4401 if (!msg)
4402 return -ENOMEM;
4403
4404 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4405 0, NL80211_CMD_SET_STATION, 0);
4406
4407 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4408 if_nametoindex(drv->ifname));
4409 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1c766b09 4410 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
c5121837
JM		 4411 if_nametoindex(ifname));
4412
4413 return send_and_recv_msgs(drv, msg, NULL, NULL);
4414 nla_put_failure:
4415 return -ENOBUFS;
4416}
4417
4418
fbbfcbac
FF		 4419static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4420{
4421 struct wpa_driver_nl80211_data *drv = priv;
e748062b 4422 char name[IFNAMSIZ + 1];
fbbfcbac
FF		 4423
4424 os_snprintf(name, sizeof(name), "%s.sta%d", drv->ifname, aid);
e748062b
JM		 4425 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4426 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
fbbfcbac
FF		 4427 if (val) {
4428 if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN,
4429 NULL, 1) < 0)
4430 return -1;
34f2f814 4431 linux_set_iface_flags(drv->ioctl_sock, name, 1);
fbbfcbac
FF		 4432 return i802_set_sta_vlan(priv, addr, name, 0);
4433 } else {
4434 i802_set_sta_vlan(priv, addr, drv->ifname, 0);
4435 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4436 name);
4437 }
4438}
4439
4440
c5121837
JM		 4441static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4442{
4443 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4444 struct sockaddr_ll lladdr;
4445 unsigned char buf[3000];
4446 int len;
4447 socklen_t fromlen = sizeof(lladdr);
4448
4449 len = recvfrom(sock, buf, sizeof(buf), 0,
4450 (struct sockaddr *)&lladdr, &fromlen);
4451 if (len < 0) {
4452 perror("recv");
4453 return;
4454 }
4455
baac6490
JM		 4456 if (have_ifidx(drv, lladdr.sll_ifindex))
4457 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
c5121837
JM		 4458}
4459
4460
c5121837
JM		 4461static int i802_get_inact_sec(void *priv, const u8 *addr)
4462{
4463 struct hostap_sta_driver_data data;
4464 int ret;
4465
4466 data.inactive_msec = (unsigned long) -1;
4467 ret = i802_read_sta_data(priv, &data, addr);
4468 if (ret || data.inactive_msec == (unsigned long) -1)
4469 return -1;
4470 return data.inactive_msec / 1000;
4471}
4472
4473
4474static int i802_sta_clear_stats(void *priv, const u8 *addr)
4475{
4476#if 0
4477 /* TODO */
4478#endif
4479 return 0;
4480}
4481
4482
731723a5
JM		 4483static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4484 int reason)
c5121837
JM		 4485{
4486 struct wpa_driver_nl80211_data *drv = priv;
4487 struct ieee80211_mgmt mgmt;
4488
4489 memset(&mgmt, 0, sizeof(mgmt));
4490 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4491 WLAN_FC_STYPE_DEAUTH);
4492 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4493 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4494 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4495 mgmt.u.deauth.reason_code = host_to_le16(reason);
9f324b61
JM		 4496 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4497 IEEE80211_HDRLEN +
4498 sizeof(mgmt.u.deauth));
c5121837
JM		 4499}
4500
4501
731723a5
JM		 4502static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4503 int reason)
c5121837
JM		 4504{
4505 struct wpa_driver_nl80211_data *drv = priv;
4506 struct ieee80211_mgmt mgmt;
4507
4508 memset(&mgmt, 0, sizeof(mgmt));
4509 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4510 WLAN_FC_STYPE_DISASSOC);
4511 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4512 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4513 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4514 mgmt.u.disassoc.reason_code = host_to_le16(reason);
9f324b61
JM		 4515 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4516 IEEE80211_HDRLEN +
4517 sizeof(mgmt.u.disassoc));
c5121837
JM		 4518}
4519
4520
94627f6c
JM		 4521static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4522 const char *brname, const char *ifname)
4523{
4524 int ifindex;
4525 char in_br[IFNAMSIZ];
4526
4527 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4528 ifindex = if_nametoindex(brname);
4529 if (ifindex == 0) {
4530 /*
4531 * Bridge was configured, but the bridge device does
4532 * not exist. Try to add it now.
4533 */
4534 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4535 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4536 "bridge interface %s: %s",
4537 brname, strerror(errno));
4538 return -1;
4539 }
4540 drv->added_bridge = 1;
4541 add_ifidx(drv, if_nametoindex(brname));
4542 }
4543
4544 if (linux_br_get(in_br, ifname) == 0) {
4545 if (os_strcmp(in_br, brname) == 0)
4546 return 0; /* already in the bridge */
4547
4548 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4549 "bridge %s", ifname, in_br);
4550 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4551 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4552 "remove interface %s from bridge "
4553 "%s: %s",
4554 ifname, brname, strerror(errno));
4555 return -1;
4556 }
4557 }
4558
4559 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4560 ifname, brname);
4561 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4562 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4563 "into bridge %s: %s",
4564 ifname, brname, strerror(errno));
4565 return -1;
4566 }
4567 drv->added_if_into_bridge = 1;
4568
4569 return 0;
4570}
4571
4572
92f475b4
JM		 4573static void *i802_init(struct hostapd_data *hapd,
4574 struct wpa_init_params *params)
c5121837
JM		 4575{
4576 struct wpa_driver_nl80211_data *drv;
4577 size_t i;
94627f6c
JM		 4578 char brname[IFNAMSIZ];
4579 int ifindex, br_ifindex;
4580 int br_added = 0;
c5121837 4581
bbaf0837
JM		 4582 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4583 if (drv == NULL)
c5121837 4584 return NULL;
c5121837 4585
b4fd6fab 4586 drv->bss.ifindex = drv->ifindex;
c5121837 4587
94627f6c
JM		 4588 if (linux_br_get(brname, params->ifname) == 0) {
4589 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4590 params->ifname, brname);
4591 br_ifindex = if_nametoindex(brname);
4592 } else {
4593 brname[0] = '\0';
4594 br_ifindex = 0;
4595 }
4596
c5121837
JM		 4597 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4598 drv->if_indices = drv->default_if_indices;
92f475b4 4599 for (i = 0; i < params->num_bridge; i++) {
94627f6c
JM		 4600 if (params->bridge[i]) {
4601 ifindex = if_nametoindex(params->bridge[i]);
4602 if (ifindex)
4603 add_ifidx(drv, ifindex);
4604 if (ifindex == br_ifindex)
4605 br_added = 1;
4606 }
c5121837 4607 }
94627f6c
JM		 4608 if (!br_added && br_ifindex &&
4609 (params->num_bridge == 0 || !params->bridge[0]))
4610 add_ifidx(drv, br_ifindex);
c5121837 4611
ad1e68e6
JM		 4612 /* start listening for EAPOL on the default AP interface */
4613 add_ifidx(drv, drv->ifindex);
4614
34f2f814 4615 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0))
6980c191 4616 goto failed;
ad1e68e6 4617
6980c191 4618 if (params->bssid) {
3adca61c 4619 if (linux_set_ifhwaddr(drv->ioctl_sock, drv->ifname,
2ac9688e 4620 params->bssid))
460456f8
JM		 4621 goto failed;
4622 }
ad1e68e6 4623
4a867032 4624 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
ad1e68e6
JM		 4625 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4626 "into AP mode", drv->ifname);
bbaf0837 4627 goto failed;
ad1e68e6
JM		 4628 }
4629
94627f6c
JM		 4630 if (params->num_bridge && params->bridge[0] &&
4631 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4632 goto failed;
4633
34f2f814 4634 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1))
bbaf0837 4635 goto failed;
ad1e68e6
JM		 4636
4637 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4638 if (drv->eapol_sock < 0) {
4639 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
bbaf0837 4640 goto failed;
ad1e68e6
JM		 4641 }
4642
4643 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4644 {
4645 printf("Could not register read socket for eapol\n");
c5121837 4646 goto failed;
ad1e68e6
JM		 4647 }
4648
2ac9688e 4649 if (linux_get_ifhwaddr(drv->ioctl_sock, drv->ifname, params->own_addr))
bbaf0837 4650 goto failed;
c5121837 4651
c5121837
JM		 4652 return drv;
4653
4654failed:
460456f8 4655 nl80211_remove_monitor_interface(drv);
c5121837
JM		 4656 if (drv->ioctl_sock >= 0)
4657 close(drv->ioctl_sock);
c5121837
JM		 4658
4659 genl_family_put(drv->nl80211);
4660 nl_cache_free(drv->nl_cache);
4661 nl_handle_destroy(drv->nl_handle);
4662 nl_cb_put(drv->nl_cb);
4663
bbaf0837
JM		 4664 os_free(drv);
4665 return NULL;
4666}
c5121837 4667
c5121837 4668
bbaf0837
JM		 4669static void i802_deinit(void *priv)
4670{
4671 wpa_driver_nl80211_deinit(priv);
c5121837
JM		 4672}
4673
4674#endif /* HOSTAPD */
4675
4676
22a7c9d7
JM		 4677static enum nl80211_iftype wpa_driver_nl80211_if_type(
4678 enum wpa_driver_if_type type)
4679{
4680 switch (type) {
4681 case WPA_IF_STATION:
4682 return NL80211_IFTYPE_STATION;
4683 case WPA_IF_AP_VLAN:
4684 return NL80211_IFTYPE_AP_VLAN;
4685 case WPA_IF_AP_BSS:
4686 return NL80211_IFTYPE_AP;
4687 }
4688 return -1;
4689}
4690
4691
4692static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4693 enum wpa_driver_if_type type,
8043e725
JM		 4694 const char *ifname, const u8 *addr,
4695 void *bss_ctx)
22a7c9d7
JM		 4696{
4697 struct wpa_driver_nl80211_data *drv = priv;
4698 int ifidx;
4699#ifdef HOSTAPD
4700 struct i802_bss *bss = NULL;
4701
4702 if (type == WPA_IF_AP_BSS) {
4703 bss = os_zalloc(sizeof(*bss));
4704 if (bss == NULL)
4705 return -1;
4706 }
4707#endif /* HOSTAPD */
4708
4709 ifidx = nl80211_create_iface(drv, ifname,
fbbfcbac
FF		 4710 wpa_driver_nl80211_if_type(type), addr,
4711 0);
22a7c9d7
JM		 4712 if (ifidx < 0) {
4713#ifdef HOSTAPD
4714 os_free(bss);
4715#endif /* HOSTAPD */
4716 return -1;
4717 }
4718
4719#ifdef HOSTAPD
4720 if (type == WPA_IF_AP_BSS) {
34f2f814
JM		 4721 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4722 nl80211_remove_iface(drv, ifidx);
22a7c9d7
JM		 4723 os_free(bss);
4724 return -1;
4725 }
4726 bss->ifindex = ifidx;
4727 bss->next = drv->bss.next;
4728 drv->bss.next = bss;
4729 }
4730#endif /* HOSTAPD */
4731
4732 return 0;
4733}
4734
4735
4736static int wpa_driver_nl80211_if_remove(void *priv,
4737 enum wpa_driver_if_type type,
4738 const char *ifname)
4739{
4740 struct wpa_driver_nl80211_data *drv = priv;
4741 int ifindex = if_nametoindex(ifname);
4742
e748062b
JM		 4743 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4744 __func__, type, ifname, ifindex);
4745 if (ifindex <= 0)
4746 return -1;
22a7c9d7
JM		 4747 nl80211_remove_iface(drv, ifindex);
4748
4749#ifdef HOSTAPD
4750 if (type == WPA_IF_AP_BSS) {
4751 struct i802_bss *bss, *prev;
4752 prev = &drv->bss;
4753 bss = drv->bss.next;
4754 while (bss) {
4755 if (ifindex == bss->ifindex) {
4756 prev->next = bss->next;
4757 os_free(bss);
4758 break;
4759 }
4760 prev = bss;
4761 bss = bss->next;
4762 }
4763 }
4764#endif /* HOSTAPD */
4765
4766 return 0;
4767}
4768
4769
55777702
JM		 4770static int cookie_handler(struct nl_msg *msg, void *arg)
4771{
4772 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4773 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4774 u64 *cookie = arg;
4775 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4776 genlmsg_attrlen(gnlh, 0), NULL);
4777 if (tb[NL80211_ATTR_COOKIE])
4778 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4779 return NL_SKIP;
4780}
4781
4782
58f6fbe0
JM		 4783static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
4784 const u8 *dst, const u8 *src,
4785 const u8 *bssid,
4786 const u8 *data, size_t data_len)
4787{
4788 struct wpa_driver_nl80211_data *drv = priv;
4789 int ret = -1;
4790 struct nl_msg *msg;
4791 u8 *buf;
4792 struct ieee80211_hdr *hdr;
4793 u64 cookie;
4794
4795 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4796 drv->ifindex);
4797
4798 buf = os_zalloc(24 + data_len);
4799 if (buf == NULL)
4800 return ret;
4801 os_memcpy(buf + 24, data, data_len);
4802 hdr = (struct ieee80211_hdr *) buf;
4803 hdr->frame_control =
4804 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4805 os_memcpy(hdr->addr1, dst, ETH_ALEN);
4806 os_memcpy(hdr->addr2, src, ETH_ALEN);
4807 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4808
4809 if (drv->nlmode == NL80211_IFTYPE_AP) {
4810 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4811 os_free(buf);
4812 return ret;
4813 }
4814
4815 msg = nlmsg_alloc();
4816 if (!msg)
4817 return -1;
4818
4819 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4820 NL80211_CMD_ACTION, 0);
4821
4822 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4823 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4824 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4825 os_free(buf);
4826
4827 cookie = 0;
4828 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4829 msg = NULL;
4830 if (ret) {
4831 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4832 "(%s)", ret, strerror(-ret));
4833 goto nla_put_failure;
4834 }
4835 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4836 "cookie 0x%llx", (long long unsigned int) cookie);
4837 drv->send_action_cookie = cookie;
4838 drv->pending_send_action = 1;
4839 ret = 0;
4840
4841nla_put_failure:
4842 nlmsg_free(msg);
4843 return ret;
4844}
4845
4846
55777702
JM		 4847static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4848 unsigned int duration)
4849{
4850 struct wpa_driver_nl80211_data *drv = priv;
4851 struct nl_msg *msg;
4852 int ret;
4853 u64 cookie;
4854
4855 msg = nlmsg_alloc();
4856 if (!msg)
4857 return -1;
4858
4859 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4860 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4861
4862 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4863 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4864 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4865
4866 cookie = 0;
4867 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4868 if (ret == 0) {
4869 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4870 "0x%llx for freq=%u MHz duration=%u",
4871 (long long unsigned int) cookie, freq, duration);
4872 drv->remain_on_chan_cookie = cookie;
4873 return 0;
4874 }
4875 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4876 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4877nla_put_failure:
4878 return -1;
4879}
4880
4881
4882static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4883{
4884 struct wpa_driver_nl80211_data *drv = priv;
4885 struct nl_msg *msg;
4886 int ret;
4887
4888 if (!drv->pending_remain_on_chan) {
4889 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4890 "to cancel");
4891 return -1;
4892 }
4893
4894 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4895 "0x%llx",
4896 (long long unsigned int) drv->remain_on_chan_cookie);
4897
4898 msg = nlmsg_alloc();
4899 if (!msg)
4900 return -1;
4901
4902 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4903 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4904
4905 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4906 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4907
4908 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4909 if (ret == 0)
4910 return 0;
4911 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4912 "%d (%s)", ret, strerror(-ret));
4913nla_put_failure:
4914 return -1;
4915}
4916
4917
504e905c
JM		 4918static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4919 void *timeout_ctx)
4920{
4921 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4922 if (drv->monitor_ifidx < 0)
4923 return; /* monitor interface already removed */
4924
4925 if (drv->nlmode != NL80211_IFTYPE_STATION)
4926 return; /* not in station mode anymore */
4927
4928 if (drv->probe_req_report)
4929 return; /* reporting enabled */
4930
4931 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4932 "Probe Request reporting needed anymore");
4933 nl80211_remove_monitor_interface(drv);
4934}
4935
4936
4937static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4938{
4939 struct wpa_driver_nl80211_data *drv = priv;
4940
4941 if (drv->nlmode != NL80211_IFTYPE_STATION) {
4942 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4943 "allowed in station mode (iftype=%d)",
4944 drv->nlmode);
4945 return -1;
4946 }
4947 drv->probe_req_report = report;
4948
4949 if (report) {
4950 eloop_cancel_timeout(
4951 wpa_driver_nl80211_probe_req_report_timeout,
4952 drv, NULL);
4953 if (drv->monitor_ifidx < 0 &&
4954 nl80211_create_monitor_interface(drv))
4955 return -1;
4956 } else {
4957 /*
4958 * It takes a while to remove the monitor interface, so try to
4959 * avoid doing this if it is needed again shortly. Instead,
4960 * schedule the interface to be removed later if no need for it
4961 * is seen.
4962 */
4963 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4964 "to be removed after 10 seconds of no use");
4965 eloop_register_timeout(
4966 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4967 drv, NULL);
4968 }
4969
4970 return 0;
4971}
4972
4973
b7a2b0b6
JM		 4974static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr,
4975 char *ifname)
7bfc47c3
JM		 4976{
4977 struct wpa_driver_nl80211_data *drv = priv;
4978
b7a2b0b6
JM		 4979 if (ifname)
4980 ifname[0] = '\0';
4981
2ac9688e 4982 if (linux_get_ifhwaddr(drv->ioctl_sock, drv->ifname, addr) < 0)
7bfc47c3
JM		 4983 return -1;
4984
4985 if (addr[0] & 0x02) {
4986 /* TODO: add support for generating multiple addresses */
4987 addr[0] ^= 0x80;
4988 } else
4989 addr[0] = 0x02; /* locally administered */
4990
4991 return 0;
4992}
4993
4994
4995static void wpa_driver_nl80211_release_interface_addr(void *priv,
4996 const u8 *addr)
4997{
4998 /* TODO: keep list of allocated address and release them here */
4999}
5000
5001
4e5cb1a3
JM		 5002static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5003 int ifindex, int disabled)
5004{
5005 struct nl_msg *msg;
5006 struct nlattr *bands, *band;
5007 int ret;
5008
5009 msg = nlmsg_alloc();
5010 if (!msg)
5011 return -1;
5012
5013 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5014 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5015 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5016
5017 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5018 if (!bands)
5019 goto nla_put_failure;
5020
5021 /*
5022 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5023 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5024 * rates. All 5 GHz rates are left enabled.
5025 */
5026 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5027 if (!band)
5028 goto nla_put_failure;
5029 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5030 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5031 nla_nest_end(msg, band);
5032
5033 nla_nest_end(msg, bands);
5034
5035 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5036 msg = NULL;
5037 if (ret) {
5038 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5039 "(%s)", ret, strerror(-ret));
5040 }
5041
5042 return ret;
5043
5044nla_put_failure:
5045 nlmsg_free(msg);
5046 return -1;
5047}
5048
5049
5050static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5051{
5052 struct wpa_driver_nl80211_data *drv = priv;
5053 drv->disable_11b_rates = disabled;
5054 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5055}
5056
5057
af473088
JM		 5058static int wpa_driver_nl80211_deinit_ap(void *priv)
5059{
5060 struct wpa_driver_nl80211_data *drv = priv;
5061 if (drv->nlmode != NL80211_IFTYPE_AP)
5062 return -1;
5063 wpa_driver_nl80211_del_beacon(drv);
5064 return wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
5065}
5066
5067
207ef3fb
JM		 5068static void wpa_driver_nl80211_resume(void *priv)
5069{
5070 struct wpa_driver_nl80211_data *drv = priv;
5071 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1)) {
5072 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5073 "resume event");
5074 }
5075}
5076
5077
3f5285e8
JM		 5078const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5079 .name = "nl80211",
5080 .desc = "Linux nl80211/cfg80211",
5081 .get_bssid = wpa_driver_nl80211_get_bssid,
5082 .get_ssid = wpa_driver_nl80211_get_ssid,
3f5285e8 5083 .set_key = wpa_driver_nl80211_set_key,
6a1063e0 5084 .scan2 = wpa_driver_nl80211_scan,
3f5285e8
JM		 5085 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5086 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5087 .disassociate = wpa_driver_nl80211_disassociate,
c2a04078 5088 .authenticate = wpa_driver_nl80211_authenticate,
3f5285e8 5089 .associate = wpa_driver_nl80211_associate,
3f5285e8
JM		 5090 .init = wpa_driver_nl80211_init,
5091 .deinit = wpa_driver_nl80211_deinit,
3f5285e8
JM		 5092 .get_capa = wpa_driver_nl80211_get_capa,
5093 .set_operstate = wpa_driver_nl80211_set_operstate,
01652550 5094 .set_supp_port = wpa_driver_nl80211_set_supp_port,
6d158490 5095 .set_country = wpa_driver_nl80211_set_country,
d2440ba0 5096 .set_beacon = wpa_driver_nl80211_set_beacon,
22a7c9d7
JM		 5097 .if_add = wpa_driver_nl80211_if_add,
5098 .if_remove = wpa_driver_nl80211_if_remove,
071f8ac4 5099 .send_mlme = wpa_driver_nl80211_send_mlme,
c3965310 5100 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
0f4e8b4f
JM		 5101 .sta_add = wpa_driver_nl80211_sta_add,
5102 .sta_remove = wpa_driver_nl80211_sta_remove,
db149ac9 5103 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
a8d6ffa4 5104 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
c5121837
JM		 5105#ifdef HOSTAPD
5106 .hapd_init = i802_init,
c5121837 5107 .hapd_deinit = i802_deinit,
c5121837
JM		 5108 .get_seqnum = i802_get_seqnum,
5109 .flush = i802_flush,
5110 .read_sta_data = i802_read_sta_data,
c5121837
JM		 5111 .sta_deauth = i802_sta_deauth,
5112 .sta_disassoc = i802_sta_disassoc,
c5121837
JM		 5113 .get_inact_sec = i802_get_inact_sec,
5114 .sta_clear_stats = i802_sta_clear_stats,
5115 .set_freq = i802_set_freq,
5116 .set_rts = i802_set_rts,
5117 .set_frag = i802_set_frag,
c5121837 5118 .set_rate_sets = i802_set_rate_sets,
c5121837
JM		 5119 .set_cts_protect = i802_set_cts_protect,
5120 .set_preamble = i802_set_preamble,
5121 .set_short_slot_time = i802_set_short_slot_time,
5122 .set_tx_queue_params = i802_set_tx_queue_params,
c5121837 5123 .set_sta_vlan = i802_set_sta_vlan,
fbbfcbac 5124 .set_wds_sta = i802_set_wds_sta,
c5121837 5125#endif /* HOSTAPD */
58f6fbe0 5126 .send_action = wpa_driver_nl80211_send_action,
55777702
JM		 5127 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5128 .cancel_remain_on_channel =
5129 wpa_driver_nl80211_cancel_remain_on_channel,
504e905c 5130 .probe_req_report = wpa_driver_nl80211_probe_req_report,
7bfc47c3
JM		 5131 .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
5132 .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
4e5cb1a3 5133 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
af473088 5134 .deinit_ap = wpa_driver_nl80211_deinit_ap,
207ef3fb 5135 .resume = wpa_driver_nl80211_resume,
3f5285e8 5136};
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