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hostapd: allow stations to move between different bss interfaces
[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 60struct i802_bss {
a2e40bb6 61 struct wpa_driver_nl80211_data *drv;
c5121837 62 struct i802_bss *next;
b4fd6fab 63 int ifindex;
a2e40bb6 64 char ifname[IFNAMSIZ + 1];
c5121837
JM		 65 unsigned int beacon_set:1;
66};
3f5285e8
JM		 67
68struct wpa_driver_nl80211_data {
69 void *ctx;
08063178 70 struct netlink_data *netlink;
c5121837 71 int ioctl_sock; /* socket for ioctl() use */
94627f6c 72 char brname[IFNAMSIZ];
3f5285e8 73 int ifindex;
7524cfb1 74 int if_removed;
c2a04078
JM		 75 struct wpa_driver_capa capa;
76 int has_capability;
c2a04078 77
3f5285e8
JM		 78 int operstate;
79
3f5285e8
JM		 80 int scan_complete_events;
81
82 struct nl_handle *nl_handle;
335ce76b 83 struct nl_handle *nl_handle_event;
3f5285e8 84 struct nl_cache *nl_cache;
335ce76b 85 struct nl_cache *nl_cache_event;
3f5285e8
JM		 86 struct nl_cb *nl_cb;
87 struct genl_family *nl80211;
1c873584 88
e6b8efeb 89 u8 auth_bssid[ETH_ALEN];
c2a04078
JM		 90 u8 bssid[ETH_ALEN];
91 int associated;
fd05d64e
JM		 92 u8 ssid[32];
93 size_t ssid_len;
ad1e68e6
JM		 94 int nlmode;
95 int ap_scan_as_station;
4832ecd7 96 unsigned int assoc_freq;
d2440ba0 97
0915d02c
JM		 98 int monitor_sock;
99 int monitor_ifidx;
504e905c 100 int probe_req_report;
4e5cb1a3 101 int disable_11b_rates;
7da3abe7 102
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
a2e40bb6
FF		 114 struct i802_bss first_bss;
115
c5121837 116#ifdef HOSTAPD
c5121837 117 int eapol_sock; /* socket for EAPOL frames */
c5121837
JM		 118
119 int default_if_indices[16];
120 int *if_indices;
121 int num_if_indices;
122
c5121837
JM		 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);
bbaf0837 142static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
fbbfcbac
FF		 143static int wpa_driver_nl80211_if_remove(void *priv,
144 enum wpa_driver_if_type type,
145 const char *ifname);
072ad14c
JM		 146#endif /* HOSTAPD */
147
504e905c
JM		 148static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
149 void *timeout_ctx);
4e5cb1a3
JM		 150static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
151 int ifindex, int disabled);
504e905c 152
3f5285e8 153
6241fcb1
JM		 154/* nl80211 code */
155static int ack_handler(struct nl_msg *msg, void *arg)
156{
157 int *err = arg;
158 *err = 0;
159 return NL_STOP;
160}
161
162static int finish_handler(struct nl_msg *msg, void *arg)
163{
8e8df255
JM		 164 int *ret = arg;
165 *ret = 0;
6241fcb1
JM		 166 return NL_SKIP;
167}
168
169static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
170 void *arg)
171{
172 int *ret = arg;
173 *ret = err->error;
174 return NL_SKIP;
175}
176
5b7b85f6
JM		 177
178static int no_seq_check(struct nl_msg *msg, void *arg)
179{
180 return NL_OK;
181}
182
183
58f6fbe0
JM		 184static int send_and_recv(struct wpa_driver_nl80211_data *drv,
185 struct nl_handle *nl_handle, struct nl_msg *msg,
186 int (*valid_handler)(struct nl_msg *, void *),
187 void *valid_data)
6241fcb1
JM		 188{
189 struct nl_cb *cb;
190 int err = -ENOMEM;
191
192 cb = nl_cb_clone(drv->nl_cb);
193 if (!cb)
194 goto out;
195
58f6fbe0 196 err = nl_send_auto_complete(nl_handle, msg);
6241fcb1
JM		 197 if (err < 0)
198 goto out;
199
200 err = 1;
201
202 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
8e8df255 203 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
6241fcb1
JM		 204 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
205
206 if (valid_handler)
207 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
208 valid_handler, valid_data);
209
210 while (err > 0)
58f6fbe0 211 nl_recvmsgs(nl_handle, cb);
6241fcb1
JM		 212 out:
213 nl_cb_put(cb);
214 nlmsg_free(msg);
215 return err;
216}
217
218
58f6fbe0
JM		 219static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
220 struct nl_msg *msg,
221 int (*valid_handler)(struct nl_msg *, void *),
222 void *valid_data)
223{
224 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
225 valid_data);
226}
227
228
97865538
JM		 229struct family_data {
230 const char *group;
231 int id;
232};
233
234
235static int family_handler(struct nl_msg *msg, void *arg)
236{
237 struct family_data *res = arg;
238 struct nlattr *tb[CTRL_ATTR_MAX + 1];
239 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
240 struct nlattr *mcgrp;
241 int i;
242
243 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
244 genlmsg_attrlen(gnlh, 0), NULL);
245 if (!tb[CTRL_ATTR_MCAST_GROUPS])
246 return NL_SKIP;
247
248 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
249 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
250 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
251 nla_len(mcgrp), NULL);
252 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
253 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
254 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
255 res->group,
256 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
257 continue;
258 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
259 break;
260 };
261
262 return NL_SKIP;
263}
264
265
266static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
267 const char *family, const char *group)
268{
269 struct nl_msg *msg;
270 int ret = -1;
271 struct family_data res = { group, -ENOENT };
272
273 msg = nlmsg_alloc();
274 if (!msg)
275 return -ENOMEM;
276 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
277 0, 0, CTRL_CMD_GETFAMILY, 0);
278 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
279
280 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
281 msg = NULL;
282 if (ret == 0)
283 ret = res.id;
284
285nla_put_failure:
286 nlmsg_free(msg);
287 return ret;
288}
289
290
3f5285e8
JM		 291static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
292{
a2e40bb6
FF		 293 struct i802_bss *bss = priv;
294 struct wpa_driver_nl80211_data *drv = bss->drv;
c2a04078
JM		 295 if (!drv->associated)
296 return -1;
297 os_memcpy(bssid, drv->bssid, ETH_ALEN);
298 return 0;
3f5285e8
JM		 299}
300
301
3f5285e8
JM		 302static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
303{
a2e40bb6
FF		 304 struct i802_bss *bss = priv;
305 struct wpa_driver_nl80211_data *drv = bss->drv;
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
a2e40bb6 330 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
7524cfb1
JM		 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) {
a2e40bb6 353 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
7524cfb1
JM		 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)) {
a2e40bb6 373 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
7524cfb1
JM		 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)) {
a2e40bb6
FF		 874 wpa_driver_nl80211_set_mode(&drv->first_bss,
875 IEEE80211_MODE_AP);
ad1e68e6
JM		 876 drv->ap_scan_as_station = 0;
877 }
878
97865538 879 switch (gnlh->cmd) {
d942a79e
JM		 880 case NL80211_CMD_TRIGGER_SCAN:
881 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
882 break;
97865538
JM		 883 case NL80211_CMD_NEW_SCAN_RESULTS:
884 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
885 drv->scan_complete_events = 1;
886 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
887 drv->ctx);
8d923a4a 888 send_scan_event(drv, 0, tb);
97865538
JM		 889 break;
890 case NL80211_CMD_SCAN_ABORTED:
891 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
892 /*
893 * Need to indicate that scan results are available in order
894 * not to make wpa_supplicant stop its scanning.
895 */
896 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
897 drv->ctx);
8d923a4a 898 send_scan_event(drv, 1, tb);
97865538 899 break;
c2a04078
JM		 900 case NL80211_CMD_AUTHENTICATE:
901 case NL80211_CMD_ASSOCIATE:
902 case NL80211_CMD_DEAUTHENTICATE:
903 case NL80211_CMD_DISASSOCIATE:
58f6fbe0
JM		 904 case NL80211_CMD_ACTION:
905 case NL80211_CMD_ACTION_TX_STATUS:
da1fb17c 906 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
58f6fbe0
JM		 907 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
908 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
909 tb[NL80211_ATTR_COOKIE]);
c2a04078 910 break;
da72a1c1
ZY		 911 case NL80211_CMD_CONNECT:
912 case NL80211_CMD_ROAM:
913 mlme_event_connect(drv, gnlh->cmd,
914 tb[NL80211_ATTR_STATUS_CODE],
915 tb[NL80211_ATTR_MAC],
916 tb[NL80211_ATTR_REQ_IE],
917 tb[NL80211_ATTR_RESP_IE]);
918 break;
919 case NL80211_CMD_DISCONNECT:
7da2c527
JM		 920 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
921 /*
922 * Avoid reporting two disassociation events that could
923 * confuse the core code.
924 */
925 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
926 "event when using userspace SME");
927 break;
928 }
da72a1c1
ZY		 929 drv->associated = 0;
930 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
931 break;
35583f3f
JM		 932 case NL80211_CMD_MICHAEL_MIC_FAILURE:
933 mlme_event_michael_mic_failure(drv, tb);
934 break;
5cc4d64b
JM		 935 case NL80211_CMD_JOIN_IBSS:
936 mlme_event_join_ibss(drv, tb);
937 break;
55777702
JM		 938 case NL80211_CMD_REMAIN_ON_CHANNEL:
939 mlme_event_remain_on_channel(drv, 0, tb);
940 break;
941 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
942 mlme_event_remain_on_channel(drv, 1, tb);
943 break;
97865538 944 default:
c2a04078
JM		 945 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
946 "(cmd=%d)", gnlh->cmd);
97865538
JM		 947 break;
948 }
949
950 return NL_SKIP;
951}
952
953
954static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
955 void *sock_ctx)
956{
957 struct nl_cb *cb;
958 struct wpa_driver_nl80211_data *drv = eloop_ctx;
959
960 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
961
962 cb = nl_cb_clone(drv->nl_cb);
963 if (!cb)
964 return;
965 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
966 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
335ce76b 967 nl_recvmsgs(drv->nl_handle_event, cb);
97865538
JM		 968 nl_cb_put(cb);
969}
970
971
6d158490
LR		 972/**
973 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
974 * @priv: driver_nl80211 private data
975 * @alpha2_arg: country to which to switch to
976 * Returns: 0 on success, -1 on failure
977 *
978 * This asks nl80211 to set the regulatory domain for given
979 * country ISO / IEC alpha2.
980 */
981static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
982{
a2e40bb6
FF		 983 struct i802_bss *bss = priv;
984 struct wpa_driver_nl80211_data *drv = bss->drv;
6d158490
LR		 985 char alpha2[3];
986 struct nl_msg *msg;
987
988 msg = nlmsg_alloc();
989 if (!msg)
e785c2ba 990 return -ENOMEM;
6d158490
LR		 991
992 alpha2[0] = alpha2_arg[0];
993 alpha2[1] = alpha2_arg[1];
994 alpha2[2] = '\0';
995
996 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
997 0, NL80211_CMD_REQ_SET_REG, 0);
998
999 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1000 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1001 return -EINVAL;
1002 return 0;
1003nla_put_failure:
1004 return -EINVAL;
1005}
1006
1007
bbaf0837 1008#ifndef HOSTAPD
80bc75f1
JM		 1009struct wiphy_info_data {
1010 int max_scan_ssids;
1581b38b 1011 int ap_supported;
93d11400
ZY		 1012 int auth_supported;
1013 int connect_supported;
80bc75f1
JM		 1014};
1015
1016
1017static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1018{
1019 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1020 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1021 struct wiphy_info_data *info = arg;
1022
1023 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1024 genlmsg_attrlen(gnlh, 0), NULL);
1025
1026 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1027 info->max_scan_ssids =
1028 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1029
1581b38b
JM		 1030 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1031 struct nlattr *nl_mode;
1032 int i;
1033 nla_for_each_nested(nl_mode,
1034 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1035 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1036 info->ap_supported = 1;
1037 break;
1038 }
1039 }
1040 }
1041
93d11400
ZY		 1042 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1043 struct nlattr *nl_cmd;
1044 int i;
1045
1046 nla_for_each_nested(nl_cmd,
1047 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1048 u32 cmd = nla_get_u32(nl_cmd);
1049 if (cmd == NL80211_CMD_AUTHENTICATE)
1050 info->auth_supported = 1;
1051 else if (cmd == NL80211_CMD_CONNECT)
1052 info->connect_supported = 1;
1053 }
1054 }
1055
80bc75f1
JM		 1056 return NL_SKIP;
1057}
1058
1059
1060static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1061 struct wiphy_info_data *info)
1062{
1063 struct nl_msg *msg;
1064
1065 os_memset(info, 0, sizeof(*info));
1066 msg = nlmsg_alloc();
1067 if (!msg)
1068 return -1;
1069
1070 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1071 0, NL80211_CMD_GET_WIPHY, 0);
1072
a2e40bb6 1073 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
80bc75f1
JM		 1074
1075 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1076 return 0;
1077 msg = NULL;
1078nla_put_failure:
1079 nlmsg_free(msg);
1080 return -1;
1081}
1082
1083
93d11400 1084static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
80bc75f1
JM		 1085{
1086 struct wiphy_info_data info;
1087 if (wpa_driver_nl80211_get_info(drv, &info))
93d11400 1088 return -1;
80bc75f1 1089 drv->has_capability = 1;
1b2a72e8
JM		 1090 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1091 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1092 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1093 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1094 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1095 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1096 WPA_DRIVER_CAPA_ENC_WEP104 |
1097 WPA_DRIVER_CAPA_ENC_TKIP |
1098 WPA_DRIVER_CAPA_ENC_CCMP;
291b6068
JM		 1099 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1100 WPA_DRIVER_AUTH_SHARED |
1101 WPA_DRIVER_AUTH_LEAP;
1b2a72e8 1102
80bc75f1 1103 drv->capa.max_scan_ssids = info.max_scan_ssids;
1581b38b
JM		 1104 if (info.ap_supported)
1105 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
93d11400
ZY		 1106
1107 if (info.auth_supported)
1108 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1109 else if (!info.connect_supported) {
1110 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1111 "authentication/association or connect commands");
1112 return -1;
1113 }
1114
0194fedb
JB		 1115 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1116
93d11400 1117 return 0;
80bc75f1 1118}
bbaf0837 1119#endif /* HOSTAPD */
80bc75f1
JM		 1120
1121
9fff9fdc
JM		 1122static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1123 void *ctx)
3f5285e8 1124{
9fff9fdc 1125 int ret;
3f5285e8 1126
9fff9fdc 1127 /* Initialize generic netlink and nl80211 */
3f5285e8
JM		 1128
1129 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1130 if (drv->nl_cb == NULL) {
1131 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1132 "callbacks");
1133 goto err1;
1134 }
1135
1136 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1137 if (drv->nl_handle == NULL) {
1138 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1139 "callbacks");
1140 goto err2;
1141 }
1142
335ce76b
JM		 1143 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1144 if (drv->nl_handle_event == NULL) {
1145 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1146 "callbacks (event)");
1147 goto err2b;
1148 }
1149
3f5285e8
JM		 1150 if (genl_connect(drv->nl_handle)) {
1151 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1152 "netlink");
1153 goto err3;
1154 }
1155
335ce76b
JM		 1156 if (genl_connect(drv->nl_handle_event)) {
1157 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1158 "netlink (event)");
1159 goto err3;
1160 }
1161
9fff9fdc
JM		 1162#ifdef CONFIG_LIBNL20
1163 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1164 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1165 "netlink cache");
1166 goto err3;
1167 }
335ce76b
JM		 1168 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1169 0) {
1170 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1171 "netlink cache (event)");
1172 goto err3b;
1173 }
9fff9fdc 1174#else /* CONFIG_LIBNL20 */
3f5285e8
JM		 1175 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1176 if (drv->nl_cache == NULL) {
1177 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1178 "netlink cache");
1179 goto err3;
1180 }
335ce76b
JM		 1181 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1182 if (drv->nl_cache_event == NULL) {
1183 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1184 "netlink cache (event)");
1185 goto err3b;
1186 }
9fff9fdc
JM		 1187#endif /* CONFIG_LIBNL20 */
1188
3f5285e8
JM		 1189 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1190 if (drv->nl80211 == NULL) {
1191 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1192 "found");
1193 goto err4;
1194 }
1195
97865538
JM		 1196 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1197 if (ret >= 0)
335ce76b 1198 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
97865538
JM		 1199 if (ret < 0) {
1200 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1201 "membership for scan events: %d (%s)",
1202 ret, strerror(-ret));
1203 goto err4;
1204 }
c2a04078
JM		 1205
1206 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1207 if (ret >= 0)
335ce76b 1208 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
c2a04078
JM		 1209 if (ret < 0) {
1210 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1211 "membership for mlme events: %d (%s)",
1212 ret, strerror(-ret));
1213 goto err4;
1214 }
c2a04078 1215
335ce76b 1216 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
97865538
JM		 1217 wpa_driver_nl80211_event_receive, drv, ctx);
1218
9fff9fdc
JM		 1219 return 0;
1220
1221err4:
335ce76b
JM		 1222 nl_cache_free(drv->nl_cache_event);
1223err3b:
9fff9fdc
JM		 1224 nl_cache_free(drv->nl_cache);
1225err3:
335ce76b
JM		 1226 nl_handle_destroy(drv->nl_handle_event);
1227err2b:
9fff9fdc
JM		 1228 nl_handle_destroy(drv->nl_handle);
1229err2:
1230 nl_cb_put(drv->nl_cb);
1231err1:
1232 return -1;
1233}
1234
1235
1236/**
1237 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1238 * @ctx: context to be used when calling wpa_supplicant functions,
1239 * e.g., wpa_supplicant_event()
1240 * @ifname: interface name, e.g., wlan0
1241 * Returns: Pointer to private data, %NULL on failure
1242 */
1243static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1244{
9fff9fdc 1245 struct wpa_driver_nl80211_data *drv;
08063178 1246 struct netlink_config *cfg;
a2e40bb6 1247 struct i802_bss *bss;
9fff9fdc
JM		 1248
1249 drv = os_zalloc(sizeof(*drv));
1250 if (drv == NULL)
1251 return NULL;
1252 drv->ctx = ctx;
a2e40bb6
FF		 1253 bss = &drv->first_bss;
1254 bss->drv = drv;
1255 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
9fff9fdc
JM		 1256 drv->monitor_ifidx = -1;
1257 drv->monitor_sock = -1;
bbaf0837 1258 drv->ioctl_sock = -1;
9fff9fdc 1259
bbaf0837
JM		 1260 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1261 os_free(drv);
1262 return NULL;
1263 }
9fff9fdc 1264
3f5285e8
JM		 1265 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1266 if (drv->ioctl_sock < 0) {
1267 perror("socket(PF_INET,SOCK_DGRAM)");
bbaf0837 1268 goto failed;
3f5285e8
JM		 1269 }
1270
08063178
JM		 1271 cfg = os_zalloc(sizeof(*cfg));
1272 if (cfg == NULL)
1273 goto failed;
1274 cfg->ctx = drv;
1275 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1276 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1277 drv->netlink = netlink_init(cfg);
1278 if (drv->netlink == NULL) {
1279 os_free(cfg);
1280 goto failed;
1281 }
1282 if (wpa_driver_nl80211_finish_drv_init(drv))
bbaf0837 1283 goto failed;
7524cfb1 1284
a2e40bb6 1285 return bss;
7524cfb1 1286
bbaf0837 1287failed:
08063178 1288 netlink_deinit(drv->netlink);
bbaf0837
JM		 1289 if (drv->ioctl_sock >= 0)
1290 close(drv->ioctl_sock);
1291
7524cfb1 1292 genl_family_put(drv->nl80211);
7524cfb1 1293 nl_cache_free(drv->nl_cache);
7524cfb1 1294 nl_handle_destroy(drv->nl_handle);
7524cfb1 1295 nl_cb_put(drv->nl_cb);
bbaf0837 1296
7524cfb1
JM		 1297 os_free(drv);
1298 return NULL;
1299}
1300
1301
58f6fbe0
JM		 1302static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1303 const u8 *match, size_t match_len)
1304{
1305 struct nl_msg *msg;
1306 int ret = -1;
1307
1308 msg = nlmsg_alloc();
1309 if (!msg)
1310 return -1;
1311
1312 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1313 NL80211_CMD_REGISTER_ACTION, 0);
1314
1315 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1316 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1317
1318 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1319 msg = NULL;
1320 if (ret) {
1321 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1322 "failed: ret=%d (%s)", ret, strerror(-ret));
1323 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1324 match, match_len);
1325 goto nla_put_failure;
1326 }
1327 ret = 0;
1328nla_put_failure:
1329 nlmsg_free(msg);
1330 return ret;
1331}
1332
1333
1334static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1335{
1336 if (0) {
1337 /* Public Action frames */
1338 return nl80211_register_action_frame(drv, (u8 *) "\x04", 1);
1339 }
1340 return 0;
1341}
1342
1343
362f781e 1344static int
7524cfb1
JM		 1345wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1346{
a2e40bb6
FF		 1347 struct i802_bss *bss = &drv->first_bss;
1348
1349 drv->ifindex = if_nametoindex(bss->ifname);
1350 drv->first_bss.ifindex = drv->ifindex;
a87c9d96 1351
bbaf0837 1352#ifndef HOSTAPD
a2e40bb6 1353 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
a87c9d96
JM		 1354 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1355 "use managed mode");
1356 }
1357
a2e40bb6 1358 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
34f2f814 1359 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
a2e40bb6 1360 bss->ifname);
362f781e
JM		 1361 return -1;
1362 }
3f5285e8 1363
93d11400
ZY		 1364 if (wpa_driver_nl80211_capa(drv))
1365 return -1;
80bc75f1 1366
08063178 1367 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 1368 1, IF_OPER_DORMANT);
bbaf0837 1369#endif /* HOSTAPD */
362f781e 1370
58f6fbe0
JM		 1371 if (nl80211_register_action_frames(drv) < 0)
1372 return -1;
1373
362f781e 1374 return 0;
3f5285e8
JM		 1375}
1376
1377
8a27af5c
JM		 1378static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1379{
1380 struct nl_msg *msg;
1381
1382 msg = nlmsg_alloc();
1383 if (!msg)
1384 return -ENOMEM;
1385
1386 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1387 0, NL80211_CMD_DEL_BEACON, 0);
1388 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1389
1390 return send_and_recv_msgs(drv, msg, NULL, NULL);
1391 nla_put_failure:
1392 return -ENOBUFS;
1393}
8a27af5c
JM		 1394
1395
3f5285e8 1396/**
7e5ba1b9
JM		 1397 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1398 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3f5285e8
JM		 1399 *
1400 * Shut down driver interface and processing of driver events. Free
1401 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1402 */
7e5ba1b9 1403static void wpa_driver_nl80211_deinit(void *priv)
3f5285e8 1404{
a2e40bb6
FF		 1405 struct i802_bss *bss = priv;
1406 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8 1407
94627f6c 1408 if (drv->added_if_into_bridge) {
a2e40bb6 1409 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
94627f6c
JM		 1410 < 0)
1411 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1412 "interface %s from bridge %s: %s",
a2e40bb6 1413 bss->ifname, drv->brname, strerror(errno));
94627f6c
JM		 1414 }
1415 if (drv->added_bridge) {
1416 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1417 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1418 "bridge %s: %s",
1419 drv->brname, strerror(errno));
1420 }
1421
460456f8 1422 nl80211_remove_monitor_interface(drv);
8a27af5c
JM		 1423
1424 if (drv->nlmode == NL80211_IFTYPE_AP)
1425 wpa_driver_nl80211_del_beacon(drv);
0915d02c 1426
bbaf0837
JM		 1427#ifdef HOSTAPD
1428 if (drv->last_freq_ht) {
1429 /* Clear HT flags from the driver */
1430 struct hostapd_freq_params freq;
1431 os_memset(&freq, 0, sizeof(freq));
1432 freq.freq = drv->last_freq;
1433 i802_set_freq(priv, &freq);
1434 }
1435
bbaf0837
JM		 1436 if (drv->eapol_sock >= 0) {
1437 eloop_unregister_read_sock(drv->eapol_sock);
1438 close(drv->eapol_sock);
1439 }
1440
1441 if (drv->if_indices != drv->default_if_indices)
1442 os_free(drv->if_indices);
1b648c7e 1443#endif /* HOSTAPD */
3f5285e8 1444
4e5cb1a3
JM		 1445 if (drv->disable_11b_rates)
1446 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1447
08063178
JM		 1448 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1449 netlink_deinit(drv->netlink);
3f5285e8 1450
bbaf0837
JM		 1451 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1452
a2e40bb6
FF		 1453 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1454 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
3f5285e8 1455
bbaf0837
JM		 1456 if (drv->ioctl_sock >= 0)
1457 close(drv->ioctl_sock);
3f5285e8 1458
335ce76b 1459 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
3f5285e8
JM		 1460 genl_family_put(drv->nl80211);
1461 nl_cache_free(drv->nl_cache);
335ce76b 1462 nl_cache_free(drv->nl_cache_event);
3f5285e8 1463 nl_handle_destroy(drv->nl_handle);
335ce76b 1464 nl_handle_destroy(drv->nl_handle_event);
3f5285e8
JM		 1465 nl_cb_put(drv->nl_cb);
1466
504e905c
JM		 1467 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1468 drv, NULL);
1469
3812464c
JM		 1470 os_free(drv->filter_ssids);
1471
3f5285e8
JM		 1472 os_free(drv);
1473}
1474
1475
1476/**
1477 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
ad1e68e6 1478 * @eloop_ctx: Driver private data
3f5285e8
JM		 1479 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1480 *
1481 * This function can be used as registered timeout when starting a scan to
1482 * generate a scan completed event if the driver does not report this.
1483 */
1484static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1485{
ad1e68e6
JM		 1486 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1487 if (drv->ap_scan_as_station) {
a2e40bb6
FF		 1488 wpa_driver_nl80211_set_mode(&drv->first_bss,
1489 IEEE80211_MODE_AP);
ad1e68e6
JM		 1490 drv->ap_scan_as_station = 0;
1491 }
3f5285e8
JM		 1492 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1493 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1494}
1495
1496
1497/**
1498 * wpa_driver_nl80211_scan - Request the driver to initiate scan
ad1e68e6 1499 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
6a1063e0 1500 * @params: Scan parameters
3f5285e8
JM		 1501 * Returns: 0 on success, -1 on failure
1502 */
6a1063e0
JM		 1503static int wpa_driver_nl80211_scan(void *priv,
1504 struct wpa_driver_scan_params *params)
3f5285e8 1505{
a2e40bb6
FF		 1506 struct i802_bss *bss = priv;
1507 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8 1508 int ret = 0, timeout;
d3a98225 1509 struct nl_msg *msg, *ssids, *freqs;
6a1063e0 1510 size_t i;
3f5285e8 1511
0e75527f
JM		 1512 msg = nlmsg_alloc();
1513 ssids = nlmsg_alloc();
d3a98225
JM		 1514 freqs = nlmsg_alloc();
1515 if (!msg || !ssids || !freqs) {
0e75527f
JM		 1516 nlmsg_free(msg);
1517 nlmsg_free(ssids);
d3a98225 1518 nlmsg_free(freqs);
3f5285e8
JM		 1519 return -1;
1520 }
1521
3812464c
JM		 1522 os_free(drv->filter_ssids);
1523 drv->filter_ssids = params->filter_ssids;
1524 params->filter_ssids = NULL;
1525 drv->num_filter_ssids = params->num_filter_ssids;
1526
0e75527f
JM		 1527 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1528 NL80211_CMD_TRIGGER_SCAN, 0);
1529
1530 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1531
6a1063e0
JM		 1532 for (i = 0; i < params->num_ssids; i++) {
1533 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1534 params->ssids[i].ssid);
3f5285e8 1535 }
6a1063e0
JM		 1536 if (params->num_ssids)
1537 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3f5285e8 1538
d173df52
JM		 1539 if (params->extra_ies) {
1540 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1541 params->extra_ies);
1542 }
1543
d3a98225
JM		 1544 if (params->freqs) {
1545 for (i = 0; params->freqs[i]; i++)
1546 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1547 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1548 }
1549
0e75527f
JM		 1550 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1551 msg = NULL;
1552 if (ret) {
1553 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1554 "(%s)", ret, strerror(-ret));
ad1e68e6
JM		 1555#ifdef HOSTAPD
1556 if (drv->nlmode == NL80211_IFTYPE_AP) {
1557 /*
1558 * mac80211 does not allow scan requests in AP mode, so
1559 * try to do this in station mode.
1560 */
a2e40bb6 1561 if (wpa_driver_nl80211_set_mode(bss,
ad1e68e6
JM		 1562 IEEE80211_MODE_INFRA))
1563 goto nla_put_failure;
1564
1565 if (wpa_driver_nl80211_scan(drv, params)) {
a2e40bb6 1566 wpa_driver_nl80211_set_mode(bss,
ad1e68e6
JM		 1567 IEEE80211_MODE_AP);
1568 goto nla_put_failure;
1569 }
1570
1571 /* Restore AP mode when processing scan results */
1572 drv->ap_scan_as_station = 1;
1573 ret = 0;
1574 } else
1575 goto nla_put_failure;
1576#else /* HOSTAPD */
0e75527f 1577 goto nla_put_failure;
ad1e68e6 1578#endif /* HOSTAPD */
3f5285e8
JM		 1579 }
1580
1581 /* Not all drivers generate "scan completed" wireless event, so try to
1582 * read results after a timeout. */
0e75527f 1583 timeout = 10;
3f5285e8
JM		 1584 if (drv->scan_complete_events) {
1585 /*
d173df52
JM		 1586 * The driver seems to deliver events to notify when scan is
1587 * complete, so use longer timeout to avoid race conditions
1588 * with scanning and following association request.
3f5285e8
JM		 1589 */
1590 timeout = 30;
1591 }
1592 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1593 "seconds", ret, timeout);
1594 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
0e75527f
JM		 1595 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1596 drv, drv->ctx);
3f5285e8 1597
0e75527f
JM		 1598nla_put_failure:
1599 nlmsg_free(ssids);
1600 nlmsg_free(msg);
d3a98225 1601 nlmsg_free(freqs);
3f5285e8
JM		 1602 return ret;
1603}
1604
1605
3812464c
JM		 1606static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1607{
1608 const u8 *end, *pos;
1609
1610 if (ies == NULL)
1611 return NULL;
1612
1613 pos = ies;
1614 end = ies + ies_len;
1615
1616 while (pos + 1 < end) {
1617 if (pos + 2 + pos[1] > end)
1618 break;
1619 if (pos[0] == ie)
1620 return pos;
1621 pos += 2 + pos[1];
1622 }
1623
1624 return NULL;
1625}
1626
1627
1628static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1629 const u8 *ie, size_t ie_len)
1630{
1631 const u8 *ssid;
1632 size_t i;
1633
1634 if (drv->filter_ssids == NULL)
1635 return 0;
1636
1637 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1638 if (ssid == NULL)
1639 return 1;
1640
1641 for (i = 0; i < drv->num_filter_ssids; i++) {
1642 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1643 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1644 0)
1645 return 0;
1646 }
1647
1648 return 1;
1649}
1650
1651
1652struct nl80211_bss_info_arg {
1653 struct wpa_driver_nl80211_data *drv;
1654 struct wpa_scan_results *res;
1655};
1656
b3db1e1c 1657static int bss_info_handler(struct nl_msg *msg, void *arg)
3f5285e8 1658{
b3db1e1c
JM		 1659 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1660 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1661 struct nlattr *bss[NL80211_BSS_MAX + 1];
1662 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1663 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1664 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1665 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1666 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1667 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1668 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1669 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1670 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
e6b8efeb 1671 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
b3ad11bb 1672 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
8c090654 1673 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
b3db1e1c 1674 };
3812464c
JM		 1675 struct nl80211_bss_info_arg *_arg = arg;
1676 struct wpa_scan_results *res = _arg->res;
3f5285e8
JM		 1677 struct wpa_scan_res **tmp;
1678 struct wpa_scan_res *r;
8c090654
JM		 1679 const u8 *ie, *beacon_ie;
1680 size_t ie_len, beacon_ie_len;
1681 u8 *pos;
3f5285e8 1682
b3db1e1c
JM		 1683 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1684 genlmsg_attrlen(gnlh, 0), NULL);
1685 if (!tb[NL80211_ATTR_BSS])
1686 return NL_SKIP;
1687 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1688 bss_policy))
1689 return NL_SKIP;
1690 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1691 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1692 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1693 } else {
1694 ie = NULL;
1695 ie_len = 0;
1696 }
8c090654
JM		 1697 if (bss[NL80211_BSS_BEACON_IES]) {
1698 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1699 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1700 } else {
1701 beacon_ie = NULL;
1702 beacon_ie_len = 0;
1703 }
3f5285e8 1704
3812464c
JM		 1705 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1706 ie ? ie_len : beacon_ie_len))
1707 return NL_SKIP;
1708
8c090654 1709 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3f5285e8 1710 if (r == NULL)
b3db1e1c
JM		 1711 return NL_SKIP;
1712 if (bss[NL80211_BSS_BSSID])
1713 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1714 ETH_ALEN);
1715 if (bss[NL80211_BSS_FREQUENCY])
1716 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1717 if (bss[NL80211_BSS_BEACON_INTERVAL])
1718 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1719 if (bss[NL80211_BSS_CAPABILITY])
1720 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
7c2849d2
JM		 1721 r->flags |= WPA_SCAN_NOISE_INVALID;
1722 if (bss[NL80211_BSS_SIGNAL_MBM]) {
b3db1e1c 1723 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
7c2849d2
JM		 1724 r->level /= 100; /* mBm to dBm */
1725 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1726 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1727 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1728 r->flags |= WPA_SCAN_LEVEL_INVALID;
1729 } else
1730 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
b3db1e1c
JM		 1731 if (bss[NL80211_BSS_TSF])
1732 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
b3ad11bb
JM		 1733 if (bss[NL80211_BSS_SEEN_MS_AGO])
1734 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
b3db1e1c 1735 r->ie_len = ie_len;
8c090654
JM		 1736 pos = (u8 *) (r + 1);
1737 if (ie) {
1738 os_memcpy(pos, ie, ie_len);
1739 pos += ie_len;
1740 }
1741 r->beacon_ie_len = beacon_ie_len;
1742 if (beacon_ie)
1743 os_memcpy(pos, beacon_ie, beacon_ie_len);
3f5285e8 1744
e6b8efeb
JM		 1745 if (bss[NL80211_BSS_STATUS]) {
1746 enum nl80211_bss_status status;
1747 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1748 switch (status) {
1749 case NL80211_BSS_STATUS_AUTHENTICATED:
1750 r->flags |= WPA_SCAN_AUTHENTICATED;
1751 break;
1752 case NL80211_BSS_STATUS_ASSOCIATED:
1753 r->flags |= WPA_SCAN_ASSOCIATED;
1754 break;
1755 default:
1756 break;
1757 }
1758 }
1759
3f5285e8
JM		 1760 tmp = os_realloc(res->res,
1761 (res->num + 1) * sizeof(struct wpa_scan_res *));
1762 if (tmp == NULL) {
1763 os_free(r);
b3db1e1c 1764 return NL_SKIP;
3f5285e8
JM		 1765 }
1766 tmp[res->num++] = r;
1767 res->res = tmp;
b3db1e1c
JM		 1768
1769 return NL_SKIP;
3f5285e8 1770}
b3db1e1c 1771
3f5285e8 1772
d72aad94
JM		 1773static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1774 const u8 *addr)
1775{
1776 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1777 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
582507be 1778 "mismatch (" MACSTR ")", MAC2STR(addr));
d72aad94
JM		 1779 wpa_driver_nl80211_mlme(drv, addr,
1780 NL80211_CMD_DEAUTHENTICATE,
1781 WLAN_REASON_PREV_AUTH_NOT_VALID);
1782 }
1783}
1784
1785
e6b8efeb
JM		 1786static void wpa_driver_nl80211_check_bss_status(
1787 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1788{
1789 size_t i;
1790
1791 for (i = 0; i < res->num; i++) {
1792 struct wpa_scan_res *r = res->res[i];
1793 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1794 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1795 "indicates BSS status with " MACSTR
1796 " as authenticated",
1797 MAC2STR(r->bssid));
1798 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1799 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1800 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1801 0) {
1802 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1803 " in local state (auth=" MACSTR
1804 " assoc=" MACSTR ")",
1805 MAC2STR(drv->auth_bssid),
1806 MAC2STR(drv->bssid));
582507be 1807 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1808 }
1809 }
1810
1811 if (r->flags & WPA_SCAN_ASSOCIATED) {
1812 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1813 "indicate BSS status with " MACSTR
1814 " as associated",
1815 MAC2STR(r->bssid));
1816 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1817 !drv->associated) {
1818 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1819 "(not associated) does not match "
1820 "with BSS state");
d72aad94 1821 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1822 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1823 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1824 0) {
1825 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1826 "(associated with " MACSTR ") does "
1827 "not match with BSS state",
d72aad94
JM		 1828 MAC2STR(drv->bssid));
1829 clear_state_mismatch(drv, r->bssid);
1830 clear_state_mismatch(drv, drv->bssid);
e6b8efeb
JM		 1831 }
1832 }
1833 }
1834}
1835
1836
d1f9c410
JM		 1837static void wpa_scan_results_free(struct wpa_scan_results *res)
1838{
1839 size_t i;
1840
1841 if (res == NULL)
1842 return;
1843
1844 for (i = 0; i < res->num; i++)
1845 os_free(res->res[i]);
1846 os_free(res->res);
1847 os_free(res);
1848}
1849
1850
7e5ba1b9 1851static struct wpa_scan_results *
8856462d 1852nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3f5285e8 1853{
b3db1e1c 1854 struct nl_msg *msg;
3f5285e8 1855 struct wpa_scan_results *res;
b3db1e1c 1856 int ret;
3812464c 1857 struct nl80211_bss_info_arg arg;
3f5285e8
JM		 1858
1859 res = os_zalloc(sizeof(*res));
b3db1e1c 1860 if (res == NULL)
8e2c104f 1861 return NULL;
b3db1e1c
JM		 1862 msg = nlmsg_alloc();
1863 if (!msg)
1864 goto nla_put_failure;
3f5285e8 1865
b3db1e1c
JM		 1866 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1867 NL80211_CMD_GET_SCAN, 0);
1868 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1869
3812464c
JM		 1870 arg.drv = drv;
1871 arg.res = res;
1872 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
b3db1e1c
JM		 1873 msg = NULL;
1874 if (ret == 0) {
1875 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1876 (unsigned long) res->num);
1877 return res;
3f5285e8 1878 }
b3db1e1c
JM		 1879 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1880 "(%s)", ret, strerror(-ret));
1881nla_put_failure:
1882 nlmsg_free(msg);
1883 wpa_scan_results_free(res);
1884 return NULL;
3f5285e8
JM		 1885}
1886
1887
8856462d
JM		 1888/**
1889 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1890 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1891 * Returns: Scan results on success, -1 on failure
1892 */
1893static struct wpa_scan_results *
1894wpa_driver_nl80211_get_scan_results(void *priv)
1895{
a2e40bb6
FF		 1896 struct i802_bss *bss = priv;
1897 struct wpa_driver_nl80211_data *drv = bss->drv;
8856462d
JM		 1898 struct wpa_scan_results *res;
1899
1900 res = nl80211_get_scan_results(drv);
1901 if (res)
1902 wpa_driver_nl80211_check_bss_status(drv, res);
1903 return res;
1904}
1905
1906
1907static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1908{
1909 struct wpa_scan_results *res;
1910 size_t i;
1911
1912 res = nl80211_get_scan_results(drv);
1913 if (res == NULL) {
1914 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1915 return;
1916 }
1917
1918 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1919 for (i = 0; i < res->num; i++) {
1920 struct wpa_scan_res *r = res->res[i];
1921 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1922 (int) i, (int) res->num, MAC2STR(r->bssid),
1923 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1924 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1925 }
1926
1927 wpa_scan_results_free(res);
1928}
1929
1930
642187d6 1931static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
71934751
JM		 1932 enum wpa_alg alg, const u8 *addr,
1933 int key_idx, int set_tx,
642187d6
JM		 1934 const u8 *seq, size_t seq_len,
1935 const u8 *key, size_t key_len)
3f5285e8 1936{
a2e40bb6
FF		 1937 struct i802_bss *bss = priv;
1938 struct wpa_driver_nl80211_data *drv = bss->drv;
642187d6 1939 int ifindex = if_nametoindex(ifname);
3f5285e8 1940 struct nl_msg *msg;
1ad1cdc2 1941 int ret;
3f5285e8 1942
1ad1cdc2
JM		 1943 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1944 "set_tx=%d seq_len=%lu key_len=%lu",
1945 __func__, ifindex, alg, addr, key_idx, set_tx,
3f5285e8
JM		 1946 (unsigned long) seq_len, (unsigned long) key_len);
1947
1948 msg = nlmsg_alloc();
1ad1cdc2
JM		 1949 if (!msg)
1950 return -ENOMEM;
3f5285e8
JM		 1951
1952 if (alg == WPA_ALG_NONE) {
1ad1cdc2
JM		 1953 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1954 0, NL80211_CMD_DEL_KEY, 0);
3f5285e8 1955 } else {
1ad1cdc2
JM		 1956 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1957 0, NL80211_CMD_NEW_KEY, 0);
3f5285e8 1958 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
d723bab4
JM		 1959 switch (alg) {
1960 case WPA_ALG_WEP:
1961 if (key_len == 5)
1962 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1963 WLAN_CIPHER_SUITE_WEP40);
1964 else
1965 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1966 WLAN_CIPHER_SUITE_WEP104);
1967 break;
1968 case WPA_ALG_TKIP:
1969 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1970 WLAN_CIPHER_SUITE_TKIP);
1971 break;
1972 case WPA_ALG_CCMP:
1973 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1974 WLAN_CIPHER_SUITE_CCMP);
1975 break;
1976 case WPA_ALG_IGTK:
1977 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1978 WLAN_CIPHER_SUITE_AES_CMAC);
1979 break;
1980 default:
1981 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1982 "algorithm %d", __func__, alg);
3f5285e8
JM		 1983 nlmsg_free(msg);
1984 return -1;
1985 }
1986 }
1987
849ef835 1988 if (seq && seq_len)
1ad1cdc2
JM		 1989 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1990
3f5285e8
JM		 1991 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1992 {
1993 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1994 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1995 }
1996 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1ad1cdc2 1997 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3f5285e8 1998
1ad1cdc2
JM		 1999 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2000 if (ret == -ENOENT && alg == WPA_ALG_NONE)
2001 ret = 0;
2002 if (ret)
2003 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2004 ret, strerror(-ret));
3f5285e8 2005
1ad1cdc2
JM		 2006 /*
2007 * If we failed or don't need to set the default TX key (below),
2008 * we're done here.
2009 */
2010 if (ret || !set_tx || alg == WPA_ALG_NONE)
2011 return ret;
2012#ifdef HOSTAPD /* FIX: is this needed? */
2013 if (addr)
2014 return ret;
2015#endif /* HOSTAPD */
3f5285e8 2016
1ad1cdc2
JM		 2017 msg = nlmsg_alloc();
2018 if (!msg)
2019 return -ENOMEM;
3f5285e8 2020
1ad1cdc2
JM		 2021 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2022 0, NL80211_CMD_SET_KEY, 0);
2023 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2024 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2025 if (alg == WPA_ALG_IGTK)
2026 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2027 else
2028 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3f5285e8 2029
1ad1cdc2
JM		 2030 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2031 if (ret == -ENOENT)
2032 ret = 0;
2033 if (ret)
2034 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2035 "err=%d %s)", ret, strerror(-ret));
2036 return ret;
3f5285e8
JM		 2037
2038nla_put_failure:
6241fcb1 2039 return -ENOBUFS;
3f5285e8
JM		 2040}
2041
2042
71934751 2043static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
0194fedb
JB		 2044 int key_idx, int defkey,
2045 const u8 *seq, size_t seq_len,
2046 const u8 *key, size_t key_len)
2047{
2048 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2049 if (!key_attr)
2050 return -1;
2051
2052 if (defkey && alg == WPA_ALG_IGTK)
2053 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2054 else if (defkey)
2055 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2056
2057 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2058
d723bab4
JM		 2059 switch (alg) {
2060 case WPA_ALG_WEP:
2061 if (key_len == 5)
2aa5f847
JM		 2062 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2063 WLAN_CIPHER_SUITE_WEP40);
d723bab4 2064 else
2aa5f847
JM		 2065 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2066 WLAN_CIPHER_SUITE_WEP104);
d723bab4
JM		 2067 break;
2068 case WPA_ALG_TKIP:
2aa5f847 2069 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
d723bab4
JM		 2070 break;
2071 case WPA_ALG_CCMP:
2aa5f847 2072 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
d723bab4
JM		 2073 break;
2074 case WPA_ALG_IGTK:
2aa5f847
JM		 2075 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2076 WLAN_CIPHER_SUITE_AES_CMAC);
d723bab4
JM		 2077 break;
2078 default:
2079 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2080 "algorithm %d", __func__, alg);
0194fedb 2081 return -1;
d723bab4 2082 }
0194fedb
JB		 2083
2084 if (seq && seq_len)
2085 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2086
2087 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2088
2089 nla_nest_end(msg, key_attr);
2090
2091 return 0;
2092 nla_put_failure:
2093 return -1;
2094}
2095
c811d5bc 2096
cfaab580
ZY		 2097static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2098 struct nl_msg *msg)
2099{
2100 int i, privacy = 0;
2101 struct nlattr *nl_keys, *nl_key;
2102
2103 for (i = 0; i < 4; i++) {
2104 if (!params->wep_key[i])
2105 continue;
2106 privacy = 1;
2107 break;
2108 }
2109 if (!privacy)
2110 return 0;
2111
2112 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2113
2114 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2115 if (!nl_keys)
2116 goto nla_put_failure;
2117
2118 for (i = 0; i < 4; i++) {
2119 if (!params->wep_key[i])
2120 continue;
2121
2122 nl_key = nla_nest_start(msg, i);
2123 if (!nl_key)
2124 goto nla_put_failure;
2125
2126 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2127 params->wep_key[i]);
2128 if (params->wep_key_len[i] == 5)
2129 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2130 WLAN_CIPHER_SUITE_WEP40);
2131 else
2132 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2133 WLAN_CIPHER_SUITE_WEP104);
2134
2135 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2136
2137 if (i == params->wep_tx_keyidx)
2138 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2139
2140 nla_nest_end(msg, nl_key);
2141 }
2142 nla_nest_end(msg, nl_keys);
2143
2144 return 0;
2145
2146nla_put_failure:
2147 return -ENOBUFS;
2148}
2149
2150
c2a04078
JM		 2151static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
2152 const u8 *addr, int cmd, u16 reason_code)
2153{
2154 int ret = -1;
2155 struct nl_msg *msg;
2156
2157 msg = nlmsg_alloc();
2158 if (!msg)
2159 return -1;
2160
2161 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2162
2163 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2164 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2165 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2166
2167 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2168 msg = NULL;
2169 if (ret) {
2170 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2171 "(%s)", ret, strerror(-ret));
2172 goto nla_put_failure;
2173 }
2174 ret = 0;
2175
2176nla_put_failure:
2177 nlmsg_free(msg);
2178 return ret;
2179}
3f5285e8
JM		 2180
2181
cfaab580
ZY		 2182static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2183 const u8 *addr, int reason_code)
2184{
2185 wpa_printf(MSG_DEBUG, "%s", __func__);
2186 drv->associated = 0;
2187 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
2188 reason_code);
2189}
2190
2191
3f5285e8 2192static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
c2a04078 2193 int reason_code)
3f5285e8 2194{
a2e40bb6
FF		 2195 struct i802_bss *bss = priv;
2196 struct wpa_driver_nl80211_data *drv = bss->drv;
cfaab580
ZY		 2197 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2198 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2199 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2200 drv->associated = 0;
c2a04078
JM		 2201 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2202 reason_code);
3f5285e8
JM		 2203}
2204
2205
2206static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
c2a04078 2207 int reason_code)
3f5285e8 2208{
a2e40bb6
FF		 2209 struct i802_bss *bss = priv;
2210 struct wpa_driver_nl80211_data *drv = bss->drv;
cfaab580
ZY		 2211 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2212 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2213 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2214 drv->associated = 0;
c2a04078
JM		 2215 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2216 reason_code);
3f5285e8
JM		 2217}
2218
2219
c2a04078
JM		 2220static int wpa_driver_nl80211_authenticate(
2221 void *priv, struct wpa_driver_auth_params *params)
2222{
a2e40bb6
FF		 2223 struct i802_bss *bss = priv;
2224 struct wpa_driver_nl80211_data *drv = bss->drv;
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
a2e40bb6 2236 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
4a867032
JM		 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;
a2e40bb6 2253 wpa_driver_nl80211_set_key(bss->ifname, drv, WPA_ALG_WEP, NULL,
642187d6 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{
a2e40bb6
FF		 2588 struct i802_bss *bss = priv;
2589 struct wpa_driver_nl80211_data *drv = bss->drv;
282d5590
JM		 2590 struct nl_msg *msg;
2591 struct phy_info_arg result = {
2592 .num_modes = num_modes,
2593 .modes = NULL,
2594 };
2595
2596 *num_modes = 0;
2597 *flags = 0;
2598
2599 msg = nlmsg_alloc();
2600 if (!msg)
2601 return NULL;
2602
2603 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2604 0, NL80211_CMD_GET_WIPHY, 0);
2605
2606 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2607
2608 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2609 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2610 nla_put_failure:
2611 return NULL;
2612}
2613
2614
2c2010ac
JM		 2615static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2616 const void *data, size_t len,
2617 int encrypt)
2618{
2619 __u8 rtap_hdr[] = {
2620 0x00, 0x00, /* radiotap version */
2621 0x0e, 0x00, /* radiotap length */
2622 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2623 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2624 0x00, /* padding */
2625 0x00, 0x00, /* RX and TX flags to indicate that */
2626 0x00, 0x00, /* this is the injected frame directly */
2627 };
2628 struct iovec iov[2] = {
2629 {
2630 .iov_base = &rtap_hdr,
2631 .iov_len = sizeof(rtap_hdr),
2632 },
2633 {
2634 .iov_base = (void *) data,
2635 .iov_len = len,
2636 }
2637 };
2638 struct msghdr msg = {
2639 .msg_name = NULL,
2640 .msg_namelen = 0,
2641 .msg_iov = iov,
2642 .msg_iovlen = 2,
2643 .msg_control = NULL,
2644 .msg_controllen = 0,
2645 .msg_flags = 0,
2646 };
2647
2648 if (encrypt)
2649 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2650
2651 return sendmsg(drv->monitor_sock, &msg, 0);
2652}
2653
2654
2655static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2656 size_t data_len)
2657{
a2e40bb6
FF		 2658 struct i802_bss *bss = priv;
2659 struct wpa_driver_nl80211_data *drv = bss->drv;
2c2010ac 2660 struct ieee80211_mgmt *mgmt;
7a47d567 2661 int encrypt = 1;
2c2010ac
JM		 2662 u16 fc;
2663
2664 mgmt = (struct ieee80211_mgmt *) data;
2665 fc = le_to_host16(mgmt->frame_control);
2666
2667 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2668 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2669 /*
2670 * Only one of the authentication frame types is encrypted.
2671 * In order for static WEP encryption to work properly (i.e.,
2672 * to not encrypt the frame), we need to tell mac80211 about
2673 * the frames that must not be encrypted.
2674 */
2675 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2676 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
7a47d567
JB		 2677 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2678 encrypt = 0;
2c2010ac
JM		 2679 }
2680
7a47d567 2681 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2c2010ac
JM		 2682}
2683
2684
5d674872
JM		 2685static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2686 const u8 *head, size_t head_len,
2687 const u8 *tail, size_t tail_len,
2688 int dtim_period, int beacon_int)
d2440ba0 2689{
a2e40bb6
FF		 2690 struct i802_bss *bss = priv;
2691 struct wpa_driver_nl80211_data *drv = bss->drv;
d2440ba0
JM		 2692 struct nl_msg *msg;
2693 u8 cmd = NL80211_CMD_NEW_BEACON;
2694 int ret;
b4fd6fab 2695 int beacon_set;
5d674872 2696 int ifindex = if_nametoindex(ifname);
b4fd6fab 2697
b4fd6fab 2698 beacon_set = bss->beacon_set;
d2440ba0
JM		 2699
2700 msg = nlmsg_alloc();
2701 if (!msg)
2702 return -ENOMEM;
2703
2704 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
b4fd6fab
JM		 2705 beacon_set);
2706 if (beacon_set)
d2440ba0
JM		 2707 cmd = NL80211_CMD_SET_BEACON;
2708
2709 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2710 0, cmd, 0);
2711 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2712 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
b4fd6fab 2713 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5d674872 2714 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
d2440ba0
JM		 2715 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2716
2717 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2718 if (ret) {
2719 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2720 ret, strerror(-ret));
b4fd6fab 2721 } else {
b4fd6fab 2722 bss->beacon_set = 1;
b4fd6fab 2723 }
d2440ba0
JM		 2724 return ret;
2725 nla_put_failure:
2726 return -ENOBUFS;
2727}
2728
2729
f019981a
JM		 2730static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2731 int freq, int ht_enabled,
2732 int sec_channel_offset)
1581b38b
JM		 2733{
2734 struct nl_msg *msg;
d2440ba0 2735 int ret;
1581b38b
JM		 2736
2737 msg = nlmsg_alloc();
2738 if (!msg)
2739 return -1;
2740
2741 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2742 NL80211_CMD_SET_WIPHY, 0);
2743
2744 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
f019981a
JM		 2745 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2746 if (ht_enabled) {
2747 switch (sec_channel_offset) {
2748 case -1:
2749 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2750 NL80211_CHAN_HT40MINUS);
2751 break;
2752 case 1:
2753 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2754 NL80211_CHAN_HT40PLUS);
2755 break;
2756 default:
2757 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2758 NL80211_CHAN_HT20);
2759 break;
2760 }
2761 }
1581b38b 2762
d2440ba0
JM		 2763 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2764 if (ret == 0)
1581b38b 2765 return 0;
f019981a
JM		 2766 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2767 "%d (%s)", freq, ret, strerror(-ret));
1581b38b
JM		 2768nla_put_failure:
2769 return -1;
2770}
2771
0f4e8b4f
JM		 2772
2773static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2774 struct hostapd_sta_add_params *params)
2775{
a2e40bb6
FF		 2776 struct i802_bss *bss = priv;
2777 struct wpa_driver_nl80211_data *drv = bss->drv;
0f4e8b4f
JM		 2778 struct nl_msg *msg;
2779 int ret = -ENOBUFS;
2780
2781 msg = nlmsg_alloc();
2782 if (!msg)
2783 return -ENOMEM;
2784
2785 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2786 0, NL80211_CMD_NEW_STATION, 0);
2787
2788 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2789 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2790 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2791 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2792 params->supp_rates);
2793 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2794 params->listen_interval);
0f4e8b4f
JM		 2795 if (params->ht_capabilities) {
2796 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
fc4e2d95
JM		 2797 sizeof(*params->ht_capabilities),
2798 params->ht_capabilities);
0f4e8b4f 2799 }
0f4e8b4f
JM		 2800
2801 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2802 if (ret)
2803 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2804 "result: %d (%s)", ret, strerror(-ret));
2805 if (ret == -EEXIST)
2806 ret = 0;
2807 nla_put_failure:
2808 return ret;
2809}
2810
2811
2812static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2813{
a2e40bb6
FF		 2814 struct i802_bss *bss = priv;
2815 struct wpa_driver_nl80211_data *drv = bss->drv;
0f4e8b4f
JM		 2816 struct nl_msg *msg;
2817 int ret;
2818
2819 msg = nlmsg_alloc();
2820 if (!msg)
2821 return -ENOMEM;
2822
2823 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2824 0, NL80211_CMD_DEL_STATION, 0);
2825
2826 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 2827 if_nametoindex(bss->ifname));
0f4e8b4f
JM		 2828 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2829
2830 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2831 if (ret == -ENOENT)
2832 return 0;
2833 return ret;
2834 nla_put_failure:
2835 return -ENOBUFS;
2836}
2837
1581b38b 2838
0915d02c
JM		 2839static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2840 int ifidx)
2841{
2842 struct nl_msg *msg;
2843
c6e8e8e4
JM		 2844 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2845
2135f224
JM		 2846#ifdef HOSTAPD
2847 /* stop listening for EAPOL on this interface */
2848 del_ifidx(drv, ifidx);
2849#endif /* HOSTAPD */
2850
0915d02c
JM		 2851 msg = nlmsg_alloc();
2852 if (!msg)
2853 goto nla_put_failure;
2854
2855 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2856 0, NL80211_CMD_DEL_INTERFACE, 0);
2857 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2858
2859 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2860 return;
2861 nla_put_failure:
e748062b 2862 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
0915d02c
JM		 2863}
2864
2865
a35187e7
KH		 2866static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2867 const char *ifname,
2868 enum nl80211_iftype iftype,
fbbfcbac 2869 const u8 *addr, int wds)
0915d02c
JM		 2870{
2871 struct nl_msg *msg, *flags = NULL;
2872 int ifidx;
2873 int ret = -ENOBUFS;
2874
2875 msg = nlmsg_alloc();
2876 if (!msg)
2877 return -1;
2878
2879 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2880 0, NL80211_CMD_NEW_INTERFACE, 0);
2881 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2882 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2883 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2884
2885 if (iftype == NL80211_IFTYPE_MONITOR) {
2886 int err;
2887
2888 flags = nlmsg_alloc();
2889 if (!flags)
2890 goto nla_put_failure;
2891
2892 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2893
2894 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2895
2896 nlmsg_free(flags);
2897
2898 if (err)
2899 goto nla_put_failure;
fbbfcbac
FF		 2900 } else if (wds) {
2901 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
0915d02c
JM		 2902 }
2903
2904 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2905 if (ret) {
2906 nla_put_failure:
a35187e7
KH		 2907 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2908 ifname, ret, strerror(-ret));
0915d02c
JM		 2909 return ret;
2910 }
2911
2912 ifidx = if_nametoindex(ifname);
c6e8e8e4
JM		 2913 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2914 ifname, ifidx);
0915d02c
JM		 2915
2916 if (ifidx <= 0)
2917 return -1;
2918
2135f224
JM		 2919#ifdef HOSTAPD
2920 /* start listening for EAPOL on this interface */
2921 add_ifidx(drv, ifidx);
7bfc47c3 2922#endif /* HOSTAPD */
2135f224 2923
7bfc47c3 2924 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2ac9688e 2925 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
41d931ee
JM		 2926 nl80211_remove_iface(drv, ifidx);
2927 return -1;
2135f224 2928 }
2135f224 2929
0915d02c
JM		 2930 return ifidx;
2931}
22a7c9d7
JM		 2932
2933
a35187e7
KH		 2934static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2935 const char *ifname, enum nl80211_iftype iftype,
fbbfcbac 2936 const u8 *addr, int wds)
a35187e7
KH		 2937{
2938 int ret;
2939
fbbfcbac 2940 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
a35187e7
KH		 2941
2942 /* if error occured and interface exists already */
2943 if (ret == -ENFILE && if_nametoindex(ifname)) {
2944 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2945
2946 /* Try to remove the interface that was already there. */
2947 nl80211_remove_iface(drv, if_nametoindex(ifname));
2948
2949 /* Try to create the interface again */
fbbfcbac
FF		 2950 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2951 wds);
a35187e7
KH		 2952 }
2953
4e5cb1a3
JM		 2954 if (ret >= 0 && drv->disable_11b_rates)
2955 nl80211_disable_11b_rates(drv, ret, 1);
2956
a35187e7
KH		 2957 return ret;
2958}
0915d02c 2959
2135f224 2960
0915d02c
JM		 2961static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2962{
2963 struct ieee80211_hdr *hdr;
f8b1f695
JM		 2964 u16 fc;
2965 union wpa_event_data event;
0915d02c
JM		 2966
2967 hdr = (struct ieee80211_hdr *) buf;
2968 fc = le_to_host16(hdr->frame_control);
2969
f8b1f695
JM		 2970 os_memset(&event, 0, sizeof(event));
2971 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2972 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2973 event.tx_status.dst = hdr->addr1;
2974 event.tx_status.data = buf;
2975 event.tx_status.data_len = len;
2976 event.tx_status.ack = ok;
2977 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
0915d02c
JM		 2978}
2979
2980
4b9841d3 2981static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
0d9fc3d8 2982 u8 *buf, size_t len)
0915d02c 2983{
f8b1f695
JM		 2984 union wpa_event_data event;
2985 os_memset(&event, 0, sizeof(event));
0d9fc3d8 2986 event.rx_from_unknown.frame = buf;
f8b1f695
JM		 2987 event.rx_from_unknown.len = len;
2988 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4b9841d3 2989}
0915d02c 2990
4b9841d3
JM		 2991
2992static void handle_frame(struct wpa_driver_nl80211_data *drv,
2a8b7416 2993 u8 *buf, size_t len, int datarate, int ssi_signal)
4b9841d3
JM		 2994{
2995 struct ieee80211_hdr *hdr;
f8b1f695
JM		 2996 u16 fc;
2997 union wpa_event_data event;
0915d02c
JM		 2998
2999 hdr = (struct ieee80211_hdr *) buf;
3000 fc = le_to_host16(hdr->frame_control);
0915d02c 3001
4b9841d3 3002 switch (WLAN_FC_GET_TYPE(fc)) {
0915d02c 3003 case WLAN_FC_TYPE_MGMT:
f8b1f695
JM		 3004 os_memset(&event, 0, sizeof(event));
3005 event.rx_mgmt.frame = buf;
3006 event.rx_mgmt.frame_len = len;
2a8b7416
JM		 3007 event.rx_mgmt.datarate = datarate;
3008 event.rx_mgmt.ssi_signal = ssi_signal;
f8b1f695 3009 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
0915d02c
JM		 3010 break;
3011 case WLAN_FC_TYPE_CTRL:
3012 /* can only get here with PS-Poll frames */
3013 wpa_printf(MSG_DEBUG, "CTRL");
0d9fc3d8 3014 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3015 break;
3016 case WLAN_FC_TYPE_DATA:
0d9fc3d8 3017 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3018 break;
3019 }
3020}
3021
3022
3023static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3024{
3025 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3026 int len;
3027 unsigned char buf[3000];
3028 struct ieee80211_radiotap_iterator iter;
3029 int ret;
2a8b7416 3030 int datarate = 0, ssi_signal = 0;
4b9841d3 3031 int injected = 0, failed = 0, rxflags = 0;
0915d02c
JM		 3032
3033 len = recv(sock, buf, sizeof(buf), 0);
3034 if (len < 0) {
3035 perror("recv");
3036 return;
3037 }
3038
504e905c
JM		 3039 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3040 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3041 "frame since Probe Request reporting is disabled");
3042 return;
3043 }
3044
0915d02c
JM		 3045 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3046 printf("received invalid radiotap frame\n");
3047 return;
3048 }
3049
0915d02c
JM		 3050 while (1) {
3051 ret = ieee80211_radiotap_iterator_next(&iter);
3052 if (ret == -ENOENT)
3053 break;
3054 if (ret) {
3055 printf("received invalid radiotap frame (%d)\n", ret);
3056 return;
3057 }
3058 switch (iter.this_arg_index) {
3059 case IEEE80211_RADIOTAP_FLAGS:
3060 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3061 len -= 4;
3062 break;
3063 case IEEE80211_RADIOTAP_RX_FLAGS:
3064 rxflags = 1;
3065 break;
3066 case IEEE80211_RADIOTAP_TX_FLAGS:
3067 injected = 1;
3068 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3069 IEEE80211_RADIOTAP_F_TX_FAIL;
3070 break;
3071 case IEEE80211_RADIOTAP_DATA_RETRIES:
3072 break;
3073 case IEEE80211_RADIOTAP_CHANNEL:
2a8b7416 3074 /* TODO: convert from freq/flags to channel number */
0915d02c
JM		 3075 break;
3076 case IEEE80211_RADIOTAP_RATE:
2a8b7416 3077 datarate = *iter.this_arg * 5;
0915d02c
JM		 3078 break;
3079 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2a8b7416 3080 ssi_signal = *iter.this_arg;
0915d02c
JM		 3081 break;
3082 }
3083 }
3084
3085 if (rxflags && injected)
3086 return;
3087
3088 if (!injected)
4b9841d3 3089 handle_frame(drv, buf + iter.max_length,
2a8b7416 3090 len - iter.max_length, datarate, ssi_signal);
0915d02c 3091 else
4b9841d3
JM		 3092 handle_tx_callback(drv->ctx, buf + iter.max_length,
3093 len - iter.max_length, !failed);
0915d02c
JM		 3094}
3095
3096
3097/*
3098 * we post-process the filter code later and rewrite
3099 * this to the offset to the last instruction
3100 */
3101#define PASS 0xFF
3102#define FAIL 0xFE
3103
3104static struct sock_filter msock_filter_insns[] = {
3105 /*
3106 * do a little-endian load of the radiotap length field
3107 */
3108 /* load lower byte into A */
3109 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3110 /* put it into X (== index register) */
3111 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3112 /* load upper byte into A */
3113 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3114 /* left-shift it by 8 */
3115 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3116 /* or with X */
3117 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3118 /* put result into X */
3119 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3120
3121 /*
3122 * Allow management frames through, this also gives us those
3123 * management frames that we sent ourselves with status
3124 */
3125 /* load the lower byte of the IEEE 802.11 frame control field */
3126 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3127 /* mask off frame type and version */
3128 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3129 /* accept frame if it's both 0, fall through otherwise */
3130 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3131
3132 /*
3133 * TODO: add a bit to radiotap RX flags that indicates
3134 * that the sending station is not associated, then
3135 * add a filter here that filters on our DA and that flag
3136 * to allow us to deauth frames to that bad station.
3137 *
3138 * Not a regression -- we didn't do it before either.
3139 */
3140
3141#if 0
3142 /*
fbbfcbac 3143 * drop non-data frames
0915d02c
JM		 3144 */
3145 /* load the lower byte of the frame control field */
3146 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3147 /* mask off QoS bit */
3148 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3149 /* drop non-data frames */
3150 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
fbbfcbac 3151#endif
0915d02c 3152 /* load the upper byte of the frame control field */
fbbfcbac 3153 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
0915d02c
JM		 3154 /* mask off toDS/fromDS */
3155 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
fbbfcbac
FF		 3156 /* accept WDS frames */
3157 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
0915d02c
JM		 3158
3159 /*
3160 * add header length to index
3161 */
3162 /* load the lower byte of the frame control field */
3163 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3164 /* mask off QoS bit */
3165 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3166 /* right shift it by 6 to give 0 or 2 */
3167 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3168 /* add data frame header length */
3169 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3170 /* add index, was start of 802.11 header */
3171 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3172 /* move to index, now start of LL header */
3173 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3174
3175 /*
3176 * Accept empty data frames, we use those for
3177 * polling activity.
3178 */
3179 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3180 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3181
3182 /*
3183 * Accept EAPOL frames
3184 */
3185 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3186 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3187 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3188 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3189
3190 /* keep these last two statements or change the code below */
3191 /* return 0 == "DROP" */
3192 BPF_STMT(BPF_RET | BPF_K, 0),
3193 /* return ~0 == "keep all" */
3194 BPF_STMT(BPF_RET | BPF_K, ~0),
3195};
3196
3197static struct sock_fprog msock_filter = {
3198 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3199 .filter = msock_filter_insns,
3200};
3201
3202
3203static int add_monitor_filter(int s)
3204{
3205 int idx;
3206
3207 /* rewrite all PASS/FAIL jump offsets */
3208 for (idx = 0; idx < msock_filter.len; idx++) {
3209 struct sock_filter *insn = &msock_filter_insns[idx];
3210
3211 if (BPF_CLASS(insn->code) == BPF_JMP) {
3212 if (insn->code == (BPF_JMP|BPF_JA)) {
3213 if (insn->k == PASS)
3214 insn->k = msock_filter.len - idx - 2;
3215 else if (insn->k == FAIL)
3216 insn->k = msock_filter.len - idx - 3;
3217 }
3218
3219 if (insn->jt == PASS)
3220 insn->jt = msock_filter.len - idx - 2;
3221 else if (insn->jt == FAIL)
3222 insn->jt = msock_filter.len - idx - 3;
3223
3224 if (insn->jf == PASS)
3225 insn->jf = msock_filter.len - idx - 2;
3226 else if (insn->jf == FAIL)
3227 insn->jf = msock_filter.len - idx - 3;
3228 }
3229 }
3230
3231 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3232 &msock_filter, sizeof(msock_filter))) {
3233 perror("SO_ATTACH_FILTER");
3234 return -1;
3235 }
3236
3237 return 0;
3238}
3239
3240
460456f8
JM		 3241static void nl80211_remove_monitor_interface(
3242 struct wpa_driver_nl80211_data *drv)
3243{
3244 if (drv->monitor_ifidx >= 0) {
3245 nl80211_remove_iface(drv, drv->monitor_ifidx);
3246 drv->monitor_ifidx = -1;
3247 }
504e905c
JM		 3248 if (drv->monitor_sock >= 0) {
3249 eloop_unregister_read_sock(drv->monitor_sock);
3250 close(drv->monitor_sock);
3251 drv->monitor_sock = -1;
3252 }
460456f8
JM		 3253}
3254
3255
0915d02c
JM		 3256static int
3257nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3258{
3259 char buf[IFNAMSIZ];
3260 struct sockaddr_ll ll;
3261 int optval;
3262 socklen_t optlen;
0915d02c 3263
a2e40bb6 3264 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
0915d02c
JM		 3265 buf[IFNAMSIZ - 1] = '\0';
3266
3267 drv->monitor_ifidx =
fbbfcbac
FF		 3268 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3269 0);
0915d02c
JM		 3270
3271 if (drv->monitor_ifidx < 0)
3272 return -1;
3273
34f2f814 3274 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
0915d02c 3275 goto error;
0915d02c
JM		 3276
3277 memset(&ll, 0, sizeof(ll));
3278 ll.sll_family = AF_PACKET;
3279 ll.sll_ifindex = drv->monitor_ifidx;
3280 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3281 if (drv->monitor_sock < 0) {
3282 perror("socket[PF_PACKET,SOCK_RAW]");
3283 goto error;
3284 }
3285
3286 if (add_monitor_filter(drv->monitor_sock)) {
3287 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3288 "interface; do filtering in user space");
3289 /* This works, but will cost in performance. */
3290 }
3291
2135f224 3292 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
0915d02c
JM		 3293 perror("monitor socket bind");
3294 goto error;
3295 }
3296
3297 optlen = sizeof(optval);
3298 optval = 20;
3299 if (setsockopt
3300 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3301 perror("Failed to set socket priority");
3302 goto error;
3303 }
3304
3305 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3306 drv, NULL)) {
3307 printf("Could not register monitor read socket\n");
3308 goto error;
3309 }
3310
3311 return 0;
3312 error:
460456f8 3313 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 3314 return -1;
3315}
3316
db149ac9
JM		 3317
3318static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3319
3320static int wpa_driver_nl80211_hapd_send_eapol(
3321 void *priv, const u8 *addr, const u8 *data,
3322 size_t data_len, int encrypt, const u8 *own_addr)
3323{
a2e40bb6
FF		 3324 struct i802_bss *bss = priv;
3325 struct wpa_driver_nl80211_data *drv = bss->drv;
db149ac9
JM		 3326 struct ieee80211_hdr *hdr;
3327 size_t len;
3328 u8 *pos;
3329 int res;
3330#if 0 /* FIX */
0de39516 3331 int qos = sta->flags & WPA_STA_WMM;
db149ac9
JM		 3332#else
3333 int qos = 0;
3334#endif
3335
3336 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3337 data_len;
3338 hdr = os_zalloc(len);
3339 if (hdr == NULL) {
3340 printf("malloc() failed for i802_send_data(len=%lu)\n",
3341 (unsigned long) len);
3342 return -1;
3343 }
3344
3345 hdr->frame_control =
3346 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3347 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3348 if (encrypt)
3349 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3350#if 0 /* To be enabled if qos determination is added above */
3351 if (qos) {
3352 hdr->frame_control |=
3353 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3354 }
3355#endif
3356
3357 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3358 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3359 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3360 pos = (u8 *) (hdr + 1);
3361
3362#if 0 /* To be enabled if qos determination is added above */
3363 if (qos) {
3364 /* add an empty QoS header if needed */
3365 pos[0] = 0;
3366 pos[1] = 0;
3367 pos += 2;
3368 }
3369#endif
3370
3371 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3372 pos += sizeof(rfc1042_header);
3373 WPA_PUT_BE16(pos, ETH_P_PAE);
3374 pos += 2;
3375 memcpy(pos, data, data_len);
3376
3377 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3378 if (res < 0) {
3379 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3380 "failed: %d (%s)",
3381 (unsigned long) len, errno, strerror(errno));
3382 }
7bf12757 3383 os_free(hdr);
db149ac9
JM		 3384
3385 return res;
3386}
3387
a8d6ffa4 3388
7e76ee9c
JM		 3389static u32 sta_flags_nl80211(int flags)
3390{
3391 u32 f = 0;
3392
0de39516 3393 if (flags & WPA_STA_AUTHORIZED)
7e76ee9c 3394 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
0de39516 3395 if (flags & WPA_STA_WMM)
7e76ee9c 3396 f |= BIT(NL80211_STA_FLAG_WME);
0de39516 3397 if (flags & WPA_STA_SHORT_PREAMBLE)
7e76ee9c 3398 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
0de39516 3399 if (flags & WPA_STA_MFP)
7e76ee9c
JM		 3400 f |= BIT(NL80211_STA_FLAG_MFP);
3401
3402 return f;
3403}
3404
3405
4c32757d
FF		 3406static int wpa_driver_nl80211_sta_set_flags(const char *ifname, void *priv,
3407 const u8 *addr, int total_flags,
3408 int flags_or, int flags_and)
a8d6ffa4 3409{
a2e40bb6
FF		 3410 struct i802_bss *bss = priv;
3411 struct wpa_driver_nl80211_data *drv = bss->drv;
a8d6ffa4 3412 struct nl_msg *msg, *flags = NULL;
7e76ee9c 3413 struct nl80211_sta_flag_update upd;
a8d6ffa4
JM		 3414
3415 msg = nlmsg_alloc();
3416 if (!msg)
3417 return -ENOMEM;
3418
3419 flags = nlmsg_alloc();
3420 if (!flags) {
3421 nlmsg_free(msg);
3422 return -ENOMEM;
3423 }
3424
3425 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3426 0, NL80211_CMD_SET_STATION, 0);
3427
3428 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4c32757d 3429 if_nametoindex(ifname));
a8d6ffa4
JM		 3430 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3431
7e76ee9c
JM		 3432 /*
3433 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3434 * can be removed eventually.
3435 */
0de39516 3436 if (total_flags & WPA_STA_AUTHORIZED)
a8d6ffa4
JM		 3437 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3438
0de39516 3439 if (total_flags & WPA_STA_WMM)
a8d6ffa4
JM		 3440 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3441
0de39516 3442 if (total_flags & WPA_STA_SHORT_PREAMBLE)
a8d6ffa4
JM		 3443 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3444
0de39516 3445 if (total_flags & WPA_STA_MFP)
a8d6ffa4
JM		 3446 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3447
3448 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3449 goto nla_put_failure;
3450
7e76ee9c
JM		 3451 os_memset(&upd, 0, sizeof(upd));
3452 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3453 upd.set = sta_flags_nl80211(flags_or);
3454 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3455
a8d6ffa4
JM		 3456 nlmsg_free(flags);
3457
3458 return send_and_recv_msgs(drv, msg, NULL, NULL);
3459 nla_put_failure:
3460 nlmsg_free(flags);
3461 return -ENOBUFS;
3462}
3463
0915d02c 3464
1581b38b
JM		 3465static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3466 struct wpa_driver_associate_params *params)
3467{
a2e40bb6 3468 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
f019981a 3469 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
460456f8 3470 nl80211_remove_monitor_interface(drv);
1581b38b 3471 return -1;
0915d02c 3472 }
1581b38b
JM		 3473
3474 /* TODO: setup monitor interface (and add code somewhere to remove this
3475 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
1581b38b
JM		 3476
3477 return 0;
3478}
1581b38b
JM		 3479
3480
5cc4d64b
JM		 3481static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3482{
3483 struct nl_msg *msg;
3484 int ret = -1;
3485
3486 msg = nlmsg_alloc();
3487 if (!msg)
3488 return -1;
3489
3490 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3491 NL80211_CMD_LEAVE_IBSS, 0);
3492 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3493 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3494 msg = NULL;
3495 if (ret) {
3496 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3497 "(%s)", ret, strerror(-ret));
3498 goto nla_put_failure;
3499 }
3500
3501 ret = 0;
3502 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3503
3504nla_put_failure:
3505 nlmsg_free(msg);
3506 return ret;
3507}
3508
3509
3510static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3511 struct wpa_driver_associate_params *params)
3512{
3513 struct nl_msg *msg;
3514 int ret = -1;
3515 int count = 0;
3516
3517 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3518
a2e40bb6 3519 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
5cc4d64b
JM		 3520 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3521 "IBSS mode");
3522 return -1;
3523 }
3524
3525retry:
3526 msg = nlmsg_alloc();
3527 if (!msg)
3528 return -1;
3529
3530 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3531 NL80211_CMD_JOIN_IBSS, 0);
3532 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3533
3534 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3535 goto nla_put_failure;
3536
3537 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3538 params->ssid, params->ssid_len);
3539 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3540 params->ssid);
3541 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3542 drv->ssid_len = params->ssid_len;
3543
3544 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3545 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3546
3547 ret = nl80211_set_conn_keys(params, msg);
3548 if (ret)
3549 goto nla_put_failure;
3550
a95795ad
JM		 3551 if (params->wpa_ie) {
3552 wpa_hexdump(MSG_DEBUG,
3553 " * Extra IEs for Beacon/Probe Response frames",
3554 params->wpa_ie, params->wpa_ie_len);
3555 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3556 params->wpa_ie);
3557 }
3558
5cc4d64b
JM		 3559 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3560 msg = NULL;
3561 if (ret) {
3562 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3563 ret, strerror(-ret));
3564 count++;
3565 if (ret == -EALREADY && count == 1) {
3566 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3567 "forced leave");
3568 nl80211_leave_ibss(drv);
3569 nlmsg_free(msg);
3570 goto retry;
3571 }
3572
3573 goto nla_put_failure;
3574 }
3575 ret = 0;
3576 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3577
3578nla_put_failure:
3579 nlmsg_free(msg);
3580 return ret;
3581}
3582
3583
cfaab580
ZY		 3584static int wpa_driver_nl80211_connect(
3585 struct wpa_driver_nl80211_data *drv,
3586 struct wpa_driver_associate_params *params)
3587{
3588 struct nl_msg *msg;
3589 enum nl80211_auth_type type;
3590 int ret = 0;
3591
3592 msg = nlmsg_alloc();
3593 if (!msg)
3594 return -1;
3595
3596 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3597 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3598 NL80211_CMD_CONNECT, 0);
3599
3600 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3601 if (params->bssid) {
3602 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3603 MAC2STR(params->bssid));
3604 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3605 }
3606 if (params->freq) {
3607 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3608 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3609 }
3610 if (params->ssid) {
3611 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3612 params->ssid, params->ssid_len);
3613 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3614 params->ssid);
3615 if (params->ssid_len > sizeof(drv->ssid))
3616 goto nla_put_failure;
3617 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3618 drv->ssid_len = params->ssid_len;
3619 }
3620 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3621 if (params->wpa_ie)
3622 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3623 params->wpa_ie);
3624
abd9fafa 3625 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
cfaab580 3626 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 3627 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
cfaab580 3628 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 3629 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
cfaab580 3630 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 3631 else if (params->auth_alg & WPA_AUTH_ALG_FT)
cfaab580
ZY		 3632 type = NL80211_AUTHTYPE_FT;
3633 else
3634 goto nla_put_failure;
3635
3636 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3637 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3638
3639 if (params->wpa_ie && params->wpa_ie_len) {
3640 enum nl80211_wpa_versions ver;
3641
3642 if (params->wpa_ie[0] == WLAN_EID_RSN)
3643 ver = NL80211_WPA_VERSION_2;
3644 else
3645 ver = NL80211_WPA_VERSION_1;
3646
3647 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3648 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3649 }
3650
3651 if (params->pairwise_suite != CIPHER_NONE) {
c1bb3e0a 3652 int cipher;
cfaab580
ZY		 3653
3654 switch (params->pairwise_suite) {
3655 case CIPHER_WEP40:
3656 cipher = WLAN_CIPHER_SUITE_WEP40;
3657 break;
3658 case CIPHER_WEP104:
3659 cipher = WLAN_CIPHER_SUITE_WEP104;
3660 break;
3661 case CIPHER_CCMP:
3662 cipher = WLAN_CIPHER_SUITE_CCMP;
3663 break;
3664 case CIPHER_TKIP:
3665 default:
3666 cipher = WLAN_CIPHER_SUITE_TKIP;
3667 break;
3668 }
3669 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3670 }
3671
3672 if (params->group_suite != CIPHER_NONE) {
c1bb3e0a 3673 int cipher;
cfaab580
ZY		 3674
3675 switch (params->group_suite) {
3676 case CIPHER_WEP40:
3677 cipher = WLAN_CIPHER_SUITE_WEP40;
3678 break;
3679 case CIPHER_WEP104:
3680 cipher = WLAN_CIPHER_SUITE_WEP104;
3681 break;
3682 case CIPHER_CCMP:
3683 cipher = WLAN_CIPHER_SUITE_CCMP;
3684 break;
3685 case CIPHER_TKIP:
3686 default:
3687 cipher = WLAN_CIPHER_SUITE_TKIP;
3688 break;
3689 }
3690 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3691 }
3692
3693 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3694 params->key_mgmt_suite == KEY_MGMT_PSK) {
3695 int mgmt = WLAN_AKM_SUITE_PSK;
3696
3697 switch (params->key_mgmt_suite) {
3698 case KEY_MGMT_802_1X:
3699 mgmt = WLAN_AKM_SUITE_8021X;
3700 break;
3701 case KEY_MGMT_PSK:
3702 default:
3703 mgmt = WLAN_AKM_SUITE_PSK;
3704 break;
3705 }
3706 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3707 }
3708
3709 ret = nl80211_set_conn_keys(params, msg);
3710 if (ret)
3711 goto nla_put_failure;
3712
3713 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3714 msg = NULL;
3715 if (ret) {
3716 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3717 "(%s)", ret, strerror(-ret));
3718 goto nla_put_failure;
3719 }
3720 ret = 0;
3721 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3722
3723nla_put_failure:
3724 nlmsg_free(msg);
3725 return ret;
3726
3727}
3728
3729
c2a04078
JM		 3730static int wpa_driver_nl80211_associate(
3731 void *priv, struct wpa_driver_associate_params *params)
3732{
a2e40bb6
FF		 3733 struct i802_bss *bss = priv;
3734 struct wpa_driver_nl80211_data *drv = bss->drv;
c2a04078
JM		 3735 int ret = -1;
3736 struct nl_msg *msg;
3737
5cc4d64b 3738 if (params->mode == IEEE80211_MODE_AP)
1581b38b 3739 return wpa_driver_nl80211_ap(drv, params);
1581b38b 3740
5cc4d64b
JM		 3741 if (params->mode == IEEE80211_MODE_IBSS)
3742 return wpa_driver_nl80211_ibss(drv, params);
3743
4a867032 3744 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
a2e40bb6 3745 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4a867032 3746 return -1;
cfaab580 3747 return wpa_driver_nl80211_connect(drv, params);
4a867032 3748 }
cfaab580 3749
c2a04078
JM		 3750 drv->associated = 0;
3751
3752 msg = nlmsg_alloc();
3753 if (!msg)
3754 return -1;
3755
3756 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3757 drv->ifindex);
3758 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3759 NL80211_CMD_ASSOCIATE, 0);
3760
3761 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3762 if (params->bssid) {
3763 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3764 MAC2STR(params->bssid));
3765 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3766 }
3767 if (params->freq) {
3768 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3769 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4832ecd7
JM		 3770 drv->assoc_freq = params->freq;
3771 } else
3772 drv->assoc_freq = 0;
c2a04078
JM		 3773 if (params->ssid) {
3774 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3775 params->ssid, params->ssid_len);
3776 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3777 params->ssid);
fd05d64e
JM		 3778 if (params->ssid_len > sizeof(drv->ssid))
3779 goto nla_put_failure;
3780 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3781 drv->ssid_len = params->ssid_len;
c2a04078
JM		 3782 }
3783 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3784 if (params->wpa_ie)
3785 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3786 params->wpa_ie);
3787
e572fa33
JM		 3788#ifdef CONFIG_IEEE80211W
3789 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3790 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3791#endif /* CONFIG_IEEE80211W */
3792
01652550
JM		 3793 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3794
62fa124c
JM		 3795 if (params->prev_bssid) {
3796 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3797 MAC2STR(params->prev_bssid));
3798 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3799 params->prev_bssid);
3800 }
3801
c2a04078
JM		 3802 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3803 msg = NULL;
3804 if (ret) {
3805 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3806 "(%s)", ret, strerror(-ret));
8856462d 3807 nl80211_dump_scan(drv);
c2a04078
JM		 3808 goto nla_put_failure;
3809 }
3810 ret = 0;
3811 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3812 "successfully");
3813
3814nla_put_failure:
3815 nlmsg_free(msg);
3816 return ret;
3817}
3f5285e8
JM		 3818
3819
ad1e68e6
JM		 3820static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3821 int ifindex, int mode)
3f5285e8 3822{
3f5285e8 3823 struct nl_msg *msg;
ad1e68e6
JM		 3824 int ret = -ENOBUFS;
3825
3826 msg = nlmsg_alloc();
3827 if (!msg)
3828 return -ENOMEM;
3829
3830 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3831 0, NL80211_CMD_SET_INTERFACE, 0);
3832 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3833 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3834
3835 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3836 if (!ret)
3837 return 0;
3838nla_put_failure:
3839 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3840 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3841 return ret;
3842}
3843
3844
3845static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3846{
a2e40bb6
FF		 3847 struct i802_bss *bss = priv;
3848 struct wpa_driver_nl80211_data *drv = bss->drv;
ad1e68e6 3849 int ret = -1;
1581b38b
JM		 3850 int nlmode;
3851
3852 switch (mode) {
3853 case 0:
3854 nlmode = NL80211_IFTYPE_STATION;
3855 break;
3856 case 1:
3857 nlmode = NL80211_IFTYPE_ADHOC;
3858 break;
3859 case 2:
3860 nlmode = NL80211_IFTYPE_AP;
3861 break;
3862 default:
3863 return -1;
3864 }
3f5285e8 3865
ad1e68e6
JM		 3866 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3867 drv->nlmode = nlmode;
460456f8
JM		 3868 ret = 0;
3869 goto done;
ad1e68e6 3870 }
3f5285e8 3871
460456f8 3872 if (nlmode == drv->nlmode) {
c6e8e8e4
JM		 3873 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3874 "requested mode - ignore error");
460456f8
JM		 3875 ret = 0;
3876 goto done; /* Already in the requested mode */
3877 }
3f5285e8 3878
3f5285e8
JM		 3879 /* mac80211 doesn't allow mode changes while the device is up, so
3880 * take the device down, try to set the mode again, and bring the
3881 * device back up.
3882 */
a2e40bb6 3883 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
3f5285e8 3884 /* Try to set the mode again while the interface is down */
ad1e68e6 3885 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
a2e40bb6 3886 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
2135f224 3887 ret = -1;
3f5285e8
JM		 3888 }
3889
c6e8e8e4
JM		 3890 if (!ret) {
3891 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3892 "interface is down");
ad1e68e6 3893 drv->nlmode = nlmode;
c6e8e8e4 3894 }
ad1e68e6 3895
460456f8 3896done:
460456f8
JM		 3897 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3898 /* Setup additional AP mode functionality if needed */
3899 if (drv->monitor_ifidx < 0 &&
3900 nl80211_create_monitor_interface(drv))
3901 return -1;
3902 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3903 /* Remove additional AP mode functionality */
3904 nl80211_remove_monitor_interface(drv);
a2e40bb6 3905 bss->beacon_set = 0;
460456f8 3906 }
460456f8 3907
c6e8e8e4
JM		 3908 if (ret)
3909 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3910 "from %d failed", nlmode, drv->nlmode);
3911
3f5285e8
JM		 3912 return ret;
3913}
3914
3915
3f5285e8
JM		 3916static int wpa_driver_nl80211_get_capa(void *priv,
3917 struct wpa_driver_capa *capa)
3918{
a2e40bb6
FF		 3919 struct i802_bss *bss = priv;
3920 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8
JM		 3921 if (!drv->has_capability)
3922 return -1;
3923 os_memcpy(capa, &drv->capa, sizeof(*capa));
3924 return 0;
3925}
3926
3927
3928static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3929{
a2e40bb6
FF		 3930 struct i802_bss *bss = priv;
3931 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8
JM		 3932
3933 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3934 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3935 drv->operstate = state;
08063178 3936 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
e2d02c29 3937 state ? IF_OPER_UP : IF_OPER_DORMANT);
3f5285e8
JM		 3938}
3939
01652550
JM		 3940
3941static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3942{
a2e40bb6
FF		 3943 struct i802_bss *bss = priv;
3944 struct wpa_driver_nl80211_data *drv = bss->drv;
01652550
JM		 3945 struct nl_msg *msg;
3946 struct nl80211_sta_flag_update upd;
3947
3948 msg = nlmsg_alloc();
3949 if (!msg)
3950 return -ENOMEM;
3951
3952 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3953 0, NL80211_CMD_SET_STATION, 0);
3954
3955 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 3956 if_nametoindex(bss->ifname));
01652550
JM		 3957 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3958
3959 os_memset(&upd, 0, sizeof(upd));
3960 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3961 if (authorized)
3962 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3963 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3964
3965 return send_and_recv_msgs(drv, msg, NULL, NULL);
3966 nla_put_failure:
3967 return -ENOBUFS;
3968}
3969
3f5285e8 3970
c5121837
JM		 3971#ifdef HOSTAPD
3972
c5121837
JM		 3973static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3974{
3975 int i;
3976 int *old;
3977
3978 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3979 ifidx);
3980 for (i = 0; i < drv->num_if_indices; i++) {
3981 if (drv->if_indices[i] == 0) {
3982 drv->if_indices[i] = ifidx;
3983 return;
3984 }
3985 }
3986
3987 if (drv->if_indices != drv->default_if_indices)
3988 old = drv->if_indices;
3989 else
3990 old = NULL;
3991
7bf12757
JM		 3992 drv->if_indices = os_realloc(old,
3993 sizeof(int) * (drv->num_if_indices + 1));
c5121837
JM		 3994 if (!drv->if_indices) {
3995 if (!old)
3996 drv->if_indices = drv->default_if_indices;
3997 else
3998 drv->if_indices = old;
3999 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4000 "interfaces");
4001 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4002 return;
4003 }
4004 drv->if_indices[drv->num_if_indices] = ifidx;
4005 drv->num_if_indices++;
4006}
4007
4008
4009static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4010{
4011 int i;
4012
4013 for (i = 0; i < drv->num_if_indices; i++) {
4014 if (drv->if_indices[i] == ifidx) {
4015 drv->if_indices[i] = 0;
4016 break;
4017 }
4018 }
4019}
4020
4021
4022static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4023{
4024 int i;
4025
4026 for (i = 0; i < drv->num_if_indices; i++)
4027 if (drv->if_indices[i] == ifidx)
4028 return 1;
4029
4030 return 0;
4031}
4032
4033
c5121837
JM		 4034static inline int min_int(int a, int b)
4035{
4036 if (a < b)
4037 return a;
4038 return b;
4039}
4040
4041
4042static int get_key_handler(struct nl_msg *msg, void *arg)
4043{
4044 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4045 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4046
4047 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4048 genlmsg_attrlen(gnlh, 0), NULL);
4049
4050 /*
4051 * TODO: validate the key index and mac address!
4052 * Otherwise, there's a race condition as soon as
4053 * the kernel starts sending key notifications.
4054 */
4055
4056 if (tb[NL80211_ATTR_KEY_SEQ])
4057 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4058 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4059 return NL_SKIP;
4060}
4061
4062
4063static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4064 int idx, u8 *seq)
4065{
a2e40bb6
FF		 4066 struct i802_bss *bss = priv;
4067 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4068 struct nl_msg *msg;
4069
4070 msg = nlmsg_alloc();
4071 if (!msg)
4072 return -ENOMEM;
4073
4074 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4075 0, NL80211_CMD_GET_KEY, 0);
4076
4077 if (addr)
4078 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4079 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4080 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4081
4082 memset(seq, 0, 6);
4083
4084 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4085 nla_put_failure:
4086 return -ENOBUFS;
4087}
4088
4089
4090static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4091 int mode)
4092{
a2e40bb6
FF		 4093 struct i802_bss *bss = priv;
4094 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4095 struct nl_msg *msg;
4096 u8 rates[NL80211_MAX_SUPP_RATES];
4097 u8 rates_len = 0;
4098 int i;
4099
4100 msg = nlmsg_alloc();
4101 if (!msg)
4102 return -ENOMEM;
4103
4104 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4105 NL80211_CMD_SET_BSS, 0);
4106
4107 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4108 rates[rates_len++] = basic_rates[i] / 5;
4109
4110 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4111
a2e40bb6 4112 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4113
4114 return send_and_recv_msgs(drv, msg, NULL, NULL);
4115 nla_put_failure:
4116 return -ENOBUFS;
4117}
4118
4119
c5121837
JM		 4120/* Set kernel driver on given frequency (MHz) */
4121static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4122{
a2e40bb6
FF		 4123 struct i802_bss *bss = priv;
4124 struct wpa_driver_nl80211_data *drv = bss->drv;
f019981a
JM		 4125 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4126 freq->sec_channel_offset);
c5121837
JM		 4127}
4128
4129
4130static int i802_set_rts(void *priv, int rts)
4131{
a2e40bb6
FF		 4132 struct i802_bss *bss = priv;
4133 struct wpa_driver_nl80211_data *drv = bss->drv;
ad649451
JM		 4134 struct nl_msg *msg;
4135 int ret = -ENOBUFS;
4136 u32 val;
c5121837 4137
ad649451
JM		 4138 msg = nlmsg_alloc();
4139 if (!msg)
4140 return -ENOMEM;
c5121837 4141
ad649451
JM		 4142 if (rts >= 2347)
4143 val = (u32) -1;
4144 else
4145 val = rts;
c5121837 4146
ad649451
JM		 4147 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4148 0, NL80211_CMD_SET_WIPHY, 0);
4149 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4150 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4151
4152 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4153 if (!ret)
4154 return 0;
4155nla_put_failure:
4156 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4157 "%d (%s)", rts, ret, strerror(-ret));
4158 return ret;
c5121837
JM		 4159}
4160
4161
4162static int i802_set_frag(void *priv, int frag)
4163{
a2e40bb6
FF		 4164 struct i802_bss *bss = priv;
4165 struct wpa_driver_nl80211_data *drv = bss->drv;
ad649451
JM		 4166 struct nl_msg *msg;
4167 int ret = -ENOBUFS;
4168 u32 val;
c5121837 4169
ad649451
JM		 4170 msg = nlmsg_alloc();
4171 if (!msg)
4172 return -ENOMEM;
c5121837 4173
ad649451
JM		 4174 if (frag >= 2346)
4175 val = (u32) -1;
4176 else
4177 val = frag;
c5121837 4178
ad649451
JM		 4179 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4180 0, NL80211_CMD_SET_WIPHY, 0);
4181 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4182 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4183
4184 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4185 if (!ret)
4186 return 0;
4187nla_put_failure:
4188 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4189 "%d: %d (%s)", frag, ret, strerror(-ret));
4190 return ret;
c5121837
JM		 4191}
4192
4193
c5121837
JM		 4194static int i802_flush(void *priv)
4195{
a2e40bb6
FF		 4196 struct i802_bss *bss = priv;
4197 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4198 struct nl_msg *msg;
4199
4200 msg = nlmsg_alloc();
4201 if (!msg)
4202 return -1;
4203
4204 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4205 0, NL80211_CMD_DEL_STATION, 0);
4206
4207 /*
4208 * XXX: FIX! this needs to flush all VLANs too
4209 */
4210 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4211 if_nametoindex(bss->ifname));
c5121837
JM		 4212
4213 return send_and_recv_msgs(drv, msg, NULL, NULL);
4214 nla_put_failure:
4215 return -ENOBUFS;
4216}
4217
4218
4219static int get_sta_handler(struct nl_msg *msg, void *arg)
4220{
4221 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4222 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4223 struct hostap_sta_driver_data *data = arg;
4224 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4225 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4226 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4227 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4228 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4229 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4230 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4231 };
4232
4233 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4234 genlmsg_attrlen(gnlh, 0), NULL);
4235
4236 /*
4237 * TODO: validate the interface and mac address!
4238 * Otherwise, there's a race condition as soon as
4239 * the kernel starts sending station notifications.
4240 */
4241
4242 if (!tb[NL80211_ATTR_STA_INFO]) {
4243 wpa_printf(MSG_DEBUG, "sta stats missing!");
4244 return NL_SKIP;
4245 }
4246 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4247 tb[NL80211_ATTR_STA_INFO],
4248 stats_policy)) {
4249 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4250 return NL_SKIP;
4251 }
4252
4253 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4254 data->inactive_msec =
4255 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4256 if (stats[NL80211_STA_INFO_RX_BYTES])
4257 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4258 if (stats[NL80211_STA_INFO_TX_BYTES])
4259 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4260 if (stats[NL80211_STA_INFO_RX_PACKETS])
4261 data->rx_packets =
4262 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4263 if (stats[NL80211_STA_INFO_TX_PACKETS])
4264 data->tx_packets =
4265 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4266
4267 return NL_SKIP;
4268}
4269
4270static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4271 const u8 *addr)
4272{
a2e40bb6
FF		 4273 struct i802_bss *bss = priv;
4274 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4275 struct nl_msg *msg;
4276
4277 os_memset(data, 0, sizeof(*data));
4278 msg = nlmsg_alloc();
4279 if (!msg)
4280 return -ENOMEM;
4281
4282 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4283 0, NL80211_CMD_GET_STATION, 0);
4284
4285 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
a2e40bb6 4286 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4287
4288 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4289 nla_put_failure:
4290 return -ENOBUFS;
4291}
4292
4293
c5121837
JM		 4294static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4295 int cw_min, int cw_max, int burst_time)
4296{
a2e40bb6
FF		 4297 struct i802_bss *bss = priv;
4298 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4299 struct nl_msg *msg;
4300 struct nlattr *txq, *params;
4301
4302 msg = nlmsg_alloc();
4303 if (!msg)
4304 return -1;
4305
4306 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4307 0, NL80211_CMD_SET_WIPHY, 0);
4308
a2e40bb6 4309 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4310
4311 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4312 if (!txq)
4313 goto nla_put_failure;
4314
4315 /* We are only sending parameters for a single TXQ at a time */
4316 params = nla_nest_start(msg, 1);
4317 if (!params)
4318 goto nla_put_failure;
4319
4320 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4321 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4322 * 32 usec, so need to convert the value here. */
4323 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4324 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4325 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4326 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4327
4328 nla_nest_end(msg, params);
4329
4330 nla_nest_end(msg, txq);
4331
4332 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4333 return 0;
4334 nla_put_failure:
4335 return -1;
4336}
4337
4338
c5121837
JM		 4339static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4340{
a2e40bb6
FF		 4341 struct i802_bss *bss = priv;
4342 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4343 struct nl_msg *msg;
4344
4345 msg = nlmsg_alloc();
4346 if (!msg)
4347 return -ENOMEM;
4348
4349 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4350 NL80211_CMD_SET_BSS, 0);
4351
4352 if (cts >= 0)
4353 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4354 if (preamble >= 0)
4355 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4356 if (slot >= 0)
4357 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4358
a2e40bb6 4359 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4360
4361 return send_and_recv_msgs(drv, msg, NULL, NULL);
4362 nla_put_failure:
4363 return -ENOBUFS;
4364}
4365
4366
4367static int i802_set_cts_protect(void *priv, int value)
4368{
4369 return i802_set_bss(priv, value, -1, -1);
4370}
4371
4372
4373static int i802_set_preamble(void *priv, int value)
4374{
4375 return i802_set_bss(priv, -1, value, -1);
4376}
4377
4378
4379static int i802_set_short_slot_time(void *priv, int value)
4380{
4381 return i802_set_bss(priv, -1, -1, value);
4382}
4383
4384
c5121837
JM		 4385static int i802_set_sta_vlan(void *priv, const u8 *addr,
4386 const char *ifname, int vlan_id)
4387{
a2e40bb6
FF		 4388 struct i802_bss *bss = priv;
4389 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4390 struct nl_msg *msg;
4391
4392 msg = nlmsg_alloc();
4393 if (!msg)
4394 return -ENOMEM;
4395
4396 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4397 0, NL80211_CMD_SET_STATION, 0);
4398
4399 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4400 if_nametoindex(bss->ifname));
c5121837 4401 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1c766b09 4402 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
c5121837
JM		 4403 if_nametoindex(ifname));
4404
4405 return send_and_recv_msgs(drv, msg, NULL, NULL);
4406 nla_put_failure:
4407 return -ENOBUFS;
4408}
4409
4410
fbbfcbac
FF		 4411static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4412{
a2e40bb6
FF		 4413 struct i802_bss *bss = priv;
4414 struct wpa_driver_nl80211_data *drv = bss->drv;
e748062b 4415 char name[IFNAMSIZ + 1];
fbbfcbac 4416
a2e40bb6 4417 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
e748062b
JM		 4418 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4419 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
fbbfcbac 4420 if (val) {
a2e40bb6 4421 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
fbbfcbac
FF		 4422 NULL, 1) < 0)
4423 return -1;
34f2f814 4424 linux_set_iface_flags(drv->ioctl_sock, name, 1);
fbbfcbac
FF		 4425 return i802_set_sta_vlan(priv, addr, name, 0);
4426 } else {
a2e40bb6 4427 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
fbbfcbac
FF		 4428 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4429 name);
4430 }
4431}
4432
4433
c5121837
JM		 4434static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4435{
4436 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4437 struct sockaddr_ll lladdr;
4438 unsigned char buf[3000];
4439 int len;
4440 socklen_t fromlen = sizeof(lladdr);
4441
4442 len = recvfrom(sock, buf, sizeof(buf), 0,
4443 (struct sockaddr *)&lladdr, &fromlen);
4444 if (len < 0) {
4445 perror("recv");
4446 return;
4447 }
4448
baac6490
JM		 4449 if (have_ifidx(drv, lladdr.sll_ifindex))
4450 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
c5121837
JM		 4451}
4452
4453
c5121837
JM		 4454static int i802_get_inact_sec(void *priv, const u8 *addr)
4455{
4456 struct hostap_sta_driver_data data;
4457 int ret;
4458
4459 data.inactive_msec = (unsigned long) -1;
4460 ret = i802_read_sta_data(priv, &data, addr);
4461 if (ret || data.inactive_msec == (unsigned long) -1)
4462 return -1;
4463 return data.inactive_msec / 1000;
4464}
4465
4466
4467static int i802_sta_clear_stats(void *priv, const u8 *addr)
4468{
4469#if 0
4470 /* TODO */
4471#endif
4472 return 0;
4473}
4474
4475
731723a5
JM		 4476static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4477 int reason)
c5121837 4478{
a2e40bb6 4479 struct i802_bss *bss = priv;
c5121837
JM		 4480 struct ieee80211_mgmt mgmt;
4481
4482 memset(&mgmt, 0, sizeof(mgmt));
4483 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4484 WLAN_FC_STYPE_DEAUTH);
4485 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4486 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4487 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4488 mgmt.u.deauth.reason_code = host_to_le16(reason);
a2e40bb6 4489 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9f324b61
JM		 4490 IEEE80211_HDRLEN +
4491 sizeof(mgmt.u.deauth));
c5121837
JM		 4492}
4493
4494
731723a5
JM		 4495static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4496 int reason)
c5121837 4497{
a2e40bb6 4498 struct i802_bss *bss = priv;
c5121837
JM		 4499 struct ieee80211_mgmt mgmt;
4500
4501 memset(&mgmt, 0, sizeof(mgmt));
4502 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4503 WLAN_FC_STYPE_DISASSOC);
4504 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4505 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4506 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4507 mgmt.u.disassoc.reason_code = host_to_le16(reason);
a2e40bb6 4508 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9f324b61
JM		 4509 IEEE80211_HDRLEN +
4510 sizeof(mgmt.u.disassoc));
c5121837
JM		 4511}
4512
4513
94627f6c
JM		 4514static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4515 const char *brname, const char *ifname)
4516{
4517 int ifindex;
4518 char in_br[IFNAMSIZ];
4519
4520 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4521 ifindex = if_nametoindex(brname);
4522 if (ifindex == 0) {
4523 /*
4524 * Bridge was configured, but the bridge device does
4525 * not exist. Try to add it now.
4526 */
4527 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4528 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4529 "bridge interface %s: %s",
4530 brname, strerror(errno));
4531 return -1;
4532 }
4533 drv->added_bridge = 1;
4534 add_ifidx(drv, if_nametoindex(brname));
4535 }
4536
4537 if (linux_br_get(in_br, ifname) == 0) {
4538 if (os_strcmp(in_br, brname) == 0)
4539 return 0; /* already in the bridge */
4540
4541 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4542 "bridge %s", ifname, in_br);
4543 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4544 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4545 "remove interface %s from bridge "
4546 "%s: %s",
4547 ifname, brname, strerror(errno));
4548 return -1;
4549 }
4550 }
4551
4552 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4553 ifname, brname);
4554 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4555 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4556 "into bridge %s: %s",
4557 ifname, brname, strerror(errno));
4558 return -1;
4559 }
4560 drv->added_if_into_bridge = 1;
4561
4562 return 0;
4563}
4564
4565
92f475b4
JM		 4566static void *i802_init(struct hostapd_data *hapd,
4567 struct wpa_init_params *params)
c5121837
JM		 4568{
4569 struct wpa_driver_nl80211_data *drv;
a2e40bb6 4570 struct i802_bss *bss;
c5121837 4571 size_t i;
94627f6c
JM		 4572 char brname[IFNAMSIZ];
4573 int ifindex, br_ifindex;
4574 int br_added = 0;
c5121837 4575
a2e40bb6
FF		 4576 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4577 if (bss == NULL)
c5121837 4578 return NULL;
c5121837 4579
a2e40bb6 4580 drv = bss->drv;
94627f6c
JM		 4581 if (linux_br_get(brname, params->ifname) == 0) {
4582 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4583 params->ifname, brname);
4584 br_ifindex = if_nametoindex(brname);
4585 } else {
4586 brname[0] = '\0';
4587 br_ifindex = 0;
4588 }
4589
c5121837
JM		 4590 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4591 drv->if_indices = drv->default_if_indices;
92f475b4 4592 for (i = 0; i < params->num_bridge; i++) {
94627f6c
JM		 4593 if (params->bridge[i]) {
4594 ifindex = if_nametoindex(params->bridge[i]);
4595 if (ifindex)
4596 add_ifidx(drv, ifindex);
4597 if (ifindex == br_ifindex)
4598 br_added = 1;
4599 }
c5121837 4600 }
94627f6c
JM		 4601 if (!br_added && br_ifindex &&
4602 (params->num_bridge == 0 || !params->bridge[0]))
4603 add_ifidx(drv, br_ifindex);
c5121837 4604
ad1e68e6
JM		 4605 /* start listening for EAPOL on the default AP interface */
4606 add_ifidx(drv, drv->ifindex);
4607
a2e40bb6 4608 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
6980c191 4609 goto failed;
ad1e68e6 4610
6980c191 4611 if (params->bssid) {
a2e40bb6 4612 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
2ac9688e 4613 params->bssid))
460456f8
JM		 4614 goto failed;
4615 }
ad1e68e6 4616
a2e40bb6 4617 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
ad1e68e6 4618 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
a2e40bb6 4619 "into AP mode", bss->ifname);
bbaf0837 4620 goto failed;
ad1e68e6
JM		 4621 }
4622
94627f6c
JM		 4623 if (params->num_bridge && params->bridge[0] &&
4624 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4625 goto failed;
4626
a2e40bb6 4627 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
bbaf0837 4628 goto failed;
ad1e68e6
JM		 4629
4630 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4631 if (drv->eapol_sock < 0) {
4632 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
bbaf0837 4633 goto failed;
ad1e68e6
JM		 4634 }
4635
4636 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4637 {
4638 printf("Could not register read socket for eapol\n");
c5121837 4639 goto failed;
ad1e68e6
JM		 4640 }
4641
a2e40bb6 4642 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
bbaf0837 4643 goto failed;
c5121837 4644
a2e40bb6 4645 return bss;
c5121837
JM		 4646
4647failed:
460456f8 4648 nl80211_remove_monitor_interface(drv);
c5121837
JM		 4649 if (drv->ioctl_sock >= 0)
4650 close(drv->ioctl_sock);
c5121837
JM		 4651
4652 genl_family_put(drv->nl80211);
4653 nl_cache_free(drv->nl_cache);
4654 nl_handle_destroy(drv->nl_handle);
4655 nl_cb_put(drv->nl_cb);
4656
bbaf0837
JM		 4657 os_free(drv);
4658 return NULL;
4659}
c5121837 4660
c5121837 4661
bbaf0837
JM		 4662static void i802_deinit(void *priv)
4663{
4664 wpa_driver_nl80211_deinit(priv);
c5121837
JM		 4665}
4666
4667#endif /* HOSTAPD */
4668
4669
22a7c9d7
JM		 4670static enum nl80211_iftype wpa_driver_nl80211_if_type(
4671 enum wpa_driver_if_type type)
4672{
4673 switch (type) {
4674 case WPA_IF_STATION:
4675 return NL80211_IFTYPE_STATION;
4676 case WPA_IF_AP_VLAN:
4677 return NL80211_IFTYPE_AP_VLAN;
4678 case WPA_IF_AP_BSS:
4679 return NL80211_IFTYPE_AP;
4680 }
4681 return -1;
4682}
4683
4684
4685static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4686 enum wpa_driver_if_type type,
8043e725 4687 const char *ifname, const u8 *addr,
a2e40bb6 4688 void *bss_ctx, void **drv_priv)
22a7c9d7 4689{
a2e40bb6
FF		 4690 struct i802_bss *bss = priv;
4691 struct wpa_driver_nl80211_data *drv = bss->drv;
22a7c9d7
JM		 4692 int ifidx;
4693#ifdef HOSTAPD
a2e40bb6 4694 struct i802_bss *new_bss = NULL;
22a7c9d7
JM		 4695
4696 if (type == WPA_IF_AP_BSS) {
a2e40bb6
FF		 4697 new_bss = os_zalloc(sizeof(*new_bss));
4698 if (new_bss == NULL)
22a7c9d7
JM		 4699 return -1;
4700 }
4701#endif /* HOSTAPD */
4702
4703 ifidx = nl80211_create_iface(drv, ifname,
fbbfcbac
FF		 4704 wpa_driver_nl80211_if_type(type), addr,
4705 0);
22a7c9d7
JM		 4706 if (ifidx < 0) {
4707#ifdef HOSTAPD
a2e40bb6 4708 os_free(new_bss);
22a7c9d7
JM		 4709#endif /* HOSTAPD */
4710 return -1;
4711 }
4712
4713#ifdef HOSTAPD
4714 if (type == WPA_IF_AP_BSS) {
34f2f814
JM		 4715 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4716 nl80211_remove_iface(drv, ifidx);
22a7c9d7
JM		 4717 os_free(bss);
4718 return -1;
4719 }
a2e40bb6
FF		 4720 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4721 new_bss->ifindex = ifidx;
4722 new_bss->drv = drv;
4723 new_bss->next = drv->first_bss.next;
4724 drv->first_bss.next = new_bss;
4725 if (drv_priv)
4726 *drv_priv = new_bss;
22a7c9d7
JM		 4727 }
4728#endif /* HOSTAPD */
4729
4730 return 0;
4731}
4732
4733
4734static int wpa_driver_nl80211_if_remove(void *priv,
4735 enum wpa_driver_if_type type,
4736 const char *ifname)
4737{
a2e40bb6
FF		 4738 struct i802_bss *bss = priv;
4739 struct wpa_driver_nl80211_data *drv = bss->drv;
22a7c9d7
JM		 4740 int ifindex = if_nametoindex(ifname);
4741
e748062b
JM		 4742 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4743 __func__, type, ifname, ifindex);
4744 if (ifindex <= 0)
4745 return -1;
22a7c9d7
JM		 4746 nl80211_remove_iface(drv, ifindex);
4747
4748#ifdef HOSTAPD
a2e40bb6
FF		 4749 if (type != WPA_IF_AP_BSS)
4750 return 0;
4751
4752 if (bss != &drv->first_bss) {
4753 struct i802_bss *tbss = &drv->first_bss;
4754
4755 while (tbss) {
4756 if (tbss->next != bss)
4757 continue;
4758
4759 tbss->next = bss->next;
4760 os_free(bss);
4761 break;
22a7c9d7
JM		 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{
a2e40bb6
FF		 4788 struct i802_bss *bss = priv;
4789 struct wpa_driver_nl80211_data *drv = bss->drv;
58f6fbe0
JM		 4790 int ret = -1;
4791 struct nl_msg *msg;
4792 u8 *buf;
4793 struct ieee80211_hdr *hdr;
4794 u64 cookie;
4795
4796 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4797 drv->ifindex);
4798
4799 buf = os_zalloc(24 + data_len);
4800 if (buf == NULL)
4801 return ret;
4802 os_memcpy(buf + 24, data, data_len);
4803 hdr = (struct ieee80211_hdr *) buf;
4804 hdr->frame_control =
4805 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4806 os_memcpy(hdr->addr1, dst, ETH_ALEN);
4807 os_memcpy(hdr->addr2, src, ETH_ALEN);
4808 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4809
4810 if (drv->nlmode == NL80211_IFTYPE_AP) {
4811 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4812 os_free(buf);
4813 return ret;
4814 }
4815
4816 msg = nlmsg_alloc();
4817 if (!msg)
4818 return -1;
4819
4820 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4821 NL80211_CMD_ACTION, 0);
4822
4823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4824 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4825 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4826 os_free(buf);
4827
4828 cookie = 0;
4829 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4830 msg = NULL;
4831 if (ret) {
4832 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4833 "(%s)", ret, strerror(-ret));
4834 goto nla_put_failure;
4835 }
4836 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4837 "cookie 0x%llx", (long long unsigned int) cookie);
4838 drv->send_action_cookie = cookie;
4839 drv->pending_send_action = 1;
4840 ret = 0;
4841
4842nla_put_failure:
4843 nlmsg_free(msg);
4844 return ret;
4845}
4846
4847
55777702
JM		 4848static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4849 unsigned int duration)
4850{
a2e40bb6
FF		 4851 struct i802_bss *bss = priv;
4852 struct wpa_driver_nl80211_data *drv = bss->drv;
55777702
JM		 4853 struct nl_msg *msg;
4854 int ret;
4855 u64 cookie;
4856
4857 msg = nlmsg_alloc();
4858 if (!msg)
4859 return -1;
4860
4861 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4862 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4863
4864 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4865 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4866 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4867
4868 cookie = 0;
4869 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4870 if (ret == 0) {
4871 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4872 "0x%llx for freq=%u MHz duration=%u",
4873 (long long unsigned int) cookie, freq, duration);
4874 drv->remain_on_chan_cookie = cookie;
4875 return 0;
4876 }
4877 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4878 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4879nla_put_failure:
4880 return -1;
4881}
4882
4883
4884static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4885{
a2e40bb6
FF		 4886 struct i802_bss *bss = priv;
4887 struct wpa_driver_nl80211_data *drv = bss->drv;
55777702
JM		 4888 struct nl_msg *msg;
4889 int ret;
4890
4891 if (!drv->pending_remain_on_chan) {
4892 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4893 "to cancel");
4894 return -1;
4895 }
4896
4897 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4898 "0x%llx",
4899 (long long unsigned int) drv->remain_on_chan_cookie);
4900
4901 msg = nlmsg_alloc();
4902 if (!msg)
4903 return -1;
4904
4905 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4906 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4907
4908 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4909 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4910
4911 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4912 if (ret == 0)
4913 return 0;
4914 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4915 "%d (%s)", ret, strerror(-ret));
4916nla_put_failure:
4917 return -1;
4918}
4919
4920
504e905c
JM		 4921static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4922 void *timeout_ctx)
4923{
4924 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4925 if (drv->monitor_ifidx < 0)
4926 return; /* monitor interface already removed */
4927
4928 if (drv->nlmode != NL80211_IFTYPE_STATION)
4929 return; /* not in station mode anymore */
4930
4931 if (drv->probe_req_report)
4932 return; /* reporting enabled */
4933
4934 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4935 "Probe Request reporting needed anymore");
4936 nl80211_remove_monitor_interface(drv);
4937}
4938
4939
4940static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4941{
a2e40bb6
FF		 4942 struct i802_bss *bss = priv;
4943 struct wpa_driver_nl80211_data *drv = bss->drv;
504e905c
JM		 4944
4945 if (drv->nlmode != NL80211_IFTYPE_STATION) {
4946 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4947 "allowed in station mode (iftype=%d)",
4948 drv->nlmode);
4949 return -1;
4950 }
4951 drv->probe_req_report = report;
4952
4953 if (report) {
4954 eloop_cancel_timeout(
4955 wpa_driver_nl80211_probe_req_report_timeout,
4956 drv, NULL);
4957 if (drv->monitor_ifidx < 0 &&
4958 nl80211_create_monitor_interface(drv))
4959 return -1;
4960 } else {
4961 /*
4962 * It takes a while to remove the monitor interface, so try to
4963 * avoid doing this if it is needed again shortly. Instead,
4964 * schedule the interface to be removed later if no need for it
4965 * is seen.
4966 */
4967 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4968 "to be removed after 10 seconds of no use");
4969 eloop_register_timeout(
4970 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4971 drv, NULL);
4972 }
4973
4974 return 0;
4975}
4976
4977
b7a2b0b6
JM		 4978static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr,
4979 char *ifname)
7bfc47c3 4980{
a2e40bb6
FF		 4981 struct i802_bss *bss = priv;
4982 struct wpa_driver_nl80211_data *drv = bss->drv;
7bfc47c3 4983
b7a2b0b6
JM		 4984 if (ifname)
4985 ifname[0] = '\0';
4986
a2e40bb6 4987 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, addr) < 0)
7bfc47c3
JM		 4988 return -1;
4989
4990 if (addr[0] & 0x02) {
4991 /* TODO: add support for generating multiple addresses */
4992 addr[0] ^= 0x80;
4993 } else
4994 addr[0] = 0x02; /* locally administered */
4995
4996 return 0;
4997}
4998
4999
5000static void wpa_driver_nl80211_release_interface_addr(void *priv,
5001 const u8 *addr)
5002{
5003 /* TODO: keep list of allocated address and release them here */
5004}
5005
5006
4e5cb1a3
JM		 5007static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5008 int ifindex, int disabled)
5009{
5010 struct nl_msg *msg;
5011 struct nlattr *bands, *band;
5012 int ret;
5013
5014 msg = nlmsg_alloc();
5015 if (!msg)
5016 return -1;
5017
5018 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5019 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5020 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5021
5022 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5023 if (!bands)
5024 goto nla_put_failure;
5025
5026 /*
5027 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5028 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5029 * rates. All 5 GHz rates are left enabled.
5030 */
5031 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5032 if (!band)
5033 goto nla_put_failure;
5034 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5035 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5036 nla_nest_end(msg, band);
5037
5038 nla_nest_end(msg, bands);
5039
5040 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5041 msg = NULL;
5042 if (ret) {
5043 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5044 "(%s)", ret, strerror(-ret));
5045 }
5046
5047 return ret;
5048
5049nla_put_failure:
5050 nlmsg_free(msg);
5051 return -1;
5052}
5053
5054
5055static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5056{
a2e40bb6
FF		 5057 struct i802_bss *bss = priv;
5058 struct wpa_driver_nl80211_data *drv = bss->drv;
4e5cb1a3
JM		 5059 drv->disable_11b_rates = disabled;
5060 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5061}
5062
5063
af473088
JM		 5064static int wpa_driver_nl80211_deinit_ap(void *priv)
5065{
a2e40bb6
FF		 5066 struct i802_bss *bss = priv;
5067 struct wpa_driver_nl80211_data *drv = bss->drv;
af473088
JM		 5068 if (drv->nlmode != NL80211_IFTYPE_AP)
5069 return -1;
5070 wpa_driver_nl80211_del_beacon(drv);
a2e40bb6 5071 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
af473088
JM		 5072}
5073
5074
207ef3fb
JM		 5075static void wpa_driver_nl80211_resume(void *priv)
5076{
a2e40bb6
FF		 5077 struct i802_bss *bss = priv;
5078 struct wpa_driver_nl80211_data *drv = bss->drv;
5079 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
207ef3fb
JM		 5080 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5081 "resume event");
5082 }
5083}
5084
5085
3f5285e8
JM		 5086const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5087 .name = "nl80211",
5088 .desc = "Linux nl80211/cfg80211",
5089 .get_bssid = wpa_driver_nl80211_get_bssid,
5090 .get_ssid = wpa_driver_nl80211_get_ssid,
3f5285e8 5091 .set_key = wpa_driver_nl80211_set_key,
6a1063e0 5092 .scan2 = wpa_driver_nl80211_scan,
3f5285e8
JM		 5093 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5094 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5095 .disassociate = wpa_driver_nl80211_disassociate,
c2a04078 5096 .authenticate = wpa_driver_nl80211_authenticate,
3f5285e8 5097 .associate = wpa_driver_nl80211_associate,
3f5285e8
JM		 5098 .init = wpa_driver_nl80211_init,
5099 .deinit = wpa_driver_nl80211_deinit,
3f5285e8
JM		 5100 .get_capa = wpa_driver_nl80211_get_capa,
5101 .set_operstate = wpa_driver_nl80211_set_operstate,
01652550 5102 .set_supp_port = wpa_driver_nl80211_set_supp_port,
6d158490 5103 .set_country = wpa_driver_nl80211_set_country,
d2440ba0 5104 .set_beacon = wpa_driver_nl80211_set_beacon,
22a7c9d7
JM		 5105 .if_add = wpa_driver_nl80211_if_add,
5106 .if_remove = wpa_driver_nl80211_if_remove,
071f8ac4 5107 .send_mlme = wpa_driver_nl80211_send_mlme,
c3965310 5108 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
0f4e8b4f
JM		 5109 .sta_add = wpa_driver_nl80211_sta_add,
5110 .sta_remove = wpa_driver_nl80211_sta_remove,
db149ac9 5111 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
a8d6ffa4 5112 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
c5121837
JM		 5113#ifdef HOSTAPD
5114 .hapd_init = i802_init,
c5121837 5115 .hapd_deinit = i802_deinit,
c5121837
JM		 5116 .get_seqnum = i802_get_seqnum,
5117 .flush = i802_flush,
5118 .read_sta_data = i802_read_sta_data,
c5121837
JM		 5119 .sta_deauth = i802_sta_deauth,
5120 .sta_disassoc = i802_sta_disassoc,
c5121837
JM		 5121 .get_inact_sec = i802_get_inact_sec,
5122 .sta_clear_stats = i802_sta_clear_stats,
5123 .set_freq = i802_set_freq,
5124 .set_rts = i802_set_rts,
5125 .set_frag = i802_set_frag,
c5121837 5126 .set_rate_sets = i802_set_rate_sets,
c5121837
JM		 5127 .set_cts_protect = i802_set_cts_protect,
5128 .set_preamble = i802_set_preamble,
5129 .set_short_slot_time = i802_set_short_slot_time,
5130 .set_tx_queue_params = i802_set_tx_queue_params,
c5121837 5131 .set_sta_vlan = i802_set_sta_vlan,
fbbfcbac 5132 .set_wds_sta = i802_set_wds_sta,
c5121837 5133#endif /* HOSTAPD */
58f6fbe0 5134 .send_action = wpa_driver_nl80211_send_action,
55777702
JM		 5135 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5136 .cancel_remain_on_channel =
5137 wpa_driver_nl80211_cancel_remain_on_channel,
504e905c 5138 .probe_req_report = wpa_driver_nl80211_probe_req_report,
7bfc47c3
JM		 5139 .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
5140 .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
4e5cb1a3 5141 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
af473088 5142 .deinit_ap = wpa_driver_nl80211_deinit_ap,
207ef3fb 5143 .resume = wpa_driver_nl80211_resume,
3f5285e8 5144};
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