]> git.ipfire.org Git - thirdparty/hostap.git/blame - src/drivers/driver_nl80211.c
projects / thirdparty / hostap.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Sync with linux/nl80211.h from wireless-testing.git
[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>
7 * Copyright (c) 2009, Atheros Communications
3f5285e8
JM		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * Alternatively, this software may be distributed under the terms of BSD
14 * license.
15 *
16 * See README and COPYING for more details.
17 */
18
19#include "includes.h"
20#include <sys/ioctl.h>
37b7d082 21#include <net/if.h>
3f5285e8
JM		 22#include <netlink/genl/genl.h>
23#include <netlink/genl/family.h>
24#include <netlink/genl/ctrl.h>
1b648c7e
JM		 25#include <netpacket/packet.h>
26#include <linux/filter.h>
7e45830a 27#include "nl80211_copy.h"
625f587b 28
3f5285e8 29#include "common.h"
1b648c7e
JM		 30#include "eloop.h"
31#include "common/ieee802_11_defs.h"
e2d02c29 32#include "netlink.h"
34f2f814 33#include "linux_ioctl.h"
e2d02c29
JM		 34#include "radiotap.h"
35#include "radiotap_iter.h"
1b648c7e 36#include "driver.h"
0915d02c 37
c5121837
JM		 38#ifdef CONFIG_LIBNL20
39/* libnl 2.0 compatibility code */
2e8eac2d 40#define nl_handle nl_sock
c5121837
JM		 41#define nl_handle_alloc_cb nl_socket_alloc_cb
42#define nl_handle_destroy nl_socket_free
43#endif /* CONFIG_LIBNL20 */
44
c5121837 45
3f5285e8
JM		 46#ifndef IFF_LOWER_UP
47#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
48#endif
49#ifndef IFF_DORMANT
50#define IFF_DORMANT 0x20000 /* driver signals dormant */
51#endif
52
53#ifndef IF_OPER_DORMANT
54#define IF_OPER_DORMANT 5
55#endif
56#ifndef IF_OPER_UP
57#define IF_OPER_UP 6
58#endif
59
c5121837
JM		 60struct i802_bss {
61 struct i802_bss *next;
b4fd6fab 62 int ifindex;
c5121837
JM		 63 unsigned int beacon_set:1;
64};
3f5285e8
JM		 65
66struct wpa_driver_nl80211_data {
67 void *ctx;
08063178 68 struct netlink_data *netlink;
c5121837 69 int ioctl_sock; /* socket for ioctl() use */
3f5285e8 70 char ifname[IFNAMSIZ + 1];
94627f6c 71 char brname[IFNAMSIZ];
3f5285e8 72 int ifindex;
7524cfb1 73 int if_removed;
c2a04078
JM		 74 struct wpa_driver_capa capa;
75 int has_capability;
c2a04078 76
3f5285e8
JM		 77 int operstate;
78
3f5285e8
JM		 79 int scan_complete_events;
80
81 struct nl_handle *nl_handle;
335ce76b 82 struct nl_handle *nl_handle_event;
3f5285e8 83 struct nl_cache *nl_cache;
335ce76b 84 struct nl_cache *nl_cache_event;
3f5285e8
JM		 85 struct nl_cb *nl_cb;
86 struct genl_family *nl80211;
1c873584 87
e6b8efeb 88 u8 auth_bssid[ETH_ALEN];
c2a04078
JM		 89 u8 bssid[ETH_ALEN];
90 int associated;
fd05d64e
JM		 91 u8 ssid[32];
92 size_t ssid_len;
ad1e68e6
JM		 93 int nlmode;
94 int ap_scan_as_station;
4832ecd7 95 unsigned int assoc_freq;
d2440ba0 96
0915d02c
JM		 97 int monitor_sock;
98 int monitor_ifidx;
504e905c 99 int probe_req_report;
4e5cb1a3 100 int disable_11b_rates;
7da3abe7 101
7da3abe7 102 unsigned int beacon_set:1;
55777702 103 unsigned int pending_remain_on_chan:1;
94627f6c
JM		 104 unsigned int added_bridge:1;
105 unsigned int added_if_into_bridge:1;
55777702
JM		 106
107 u64 remain_on_chan_cookie;
c5121837
JM		 108
109#ifdef HOSTAPD
c5121837 110 int eapol_sock; /* socket for EAPOL frames */
c5121837
JM		 111
112 int default_if_indices[16];
113 int *if_indices;
114 int num_if_indices;
115
c5121837 116 struct i802_bss bss;
c5121837
JM		 117
118 int last_freq;
119 int last_freq_ht;
c5121837 120#endif /* HOSTAPD */
3f5285e8
JM		 121};
122
123
124static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
125 void *timeout_ctx);
ad1e68e6 126static int wpa_driver_nl80211_set_mode(void *priv, int mode);
362f781e 127static int
7524cfb1 128wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
d72aad94
JM		 129static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
130 const u8 *addr, int cmd, u16 reason_code);
460456f8
JM		 131static void nl80211_remove_monitor_interface(
132 struct wpa_driver_nl80211_data *drv);
0915d02c 133
072ad14c 134#ifdef HOSTAPD
2135f224
JM		 135static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
136static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
b4fd6fab
JM		 137static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
138 int ifindex);
bbaf0837 139static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
fbbfcbac
FF		 140static int wpa_driver_nl80211_if_remove(void *priv,
141 enum wpa_driver_if_type type,
142 const char *ifname);
072ad14c
JM		 143#endif /* HOSTAPD */
144
504e905c
JM		 145static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
146 void *timeout_ctx);
4e5cb1a3
JM		 147static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
148 int ifindex, int disabled);
504e905c 149
3f5285e8 150
6241fcb1
JM		 151/* nl80211 code */
152static int ack_handler(struct nl_msg *msg, void *arg)
153{
154 int *err = arg;
155 *err = 0;
156 return NL_STOP;
157}
158
159static int finish_handler(struct nl_msg *msg, void *arg)
160{
8e8df255
JM		 161 int *ret = arg;
162 *ret = 0;
6241fcb1
JM		 163 return NL_SKIP;
164}
165
166static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
167 void *arg)
168{
169 int *ret = arg;
170 *ret = err->error;
171 return NL_SKIP;
172}
173
5b7b85f6
JM		 174
175static int no_seq_check(struct nl_msg *msg, void *arg)
176{
177 return NL_OK;
178}
179
180
6241fcb1
JM		 181static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
182 struct nl_msg *msg,
183 int (*valid_handler)(struct nl_msg *, void *),
184 void *valid_data)
185{
186 struct nl_cb *cb;
187 int err = -ENOMEM;
188
189 cb = nl_cb_clone(drv->nl_cb);
190 if (!cb)
191 goto out;
192
193 err = nl_send_auto_complete(drv->nl_handle, msg);
194 if (err < 0)
195 goto out;
196
197 err = 1;
198
199 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
8e8df255 200 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
6241fcb1
JM		 201 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
202
203 if (valid_handler)
204 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
205 valid_handler, valid_data);
206
207 while (err > 0)
208 nl_recvmsgs(drv->nl_handle, cb);
209 out:
210 nl_cb_put(cb);
211 nlmsg_free(msg);
212 return err;
213}
214
215
97865538
JM		 216struct family_data {
217 const char *group;
218 int id;
219};
220
221
222static int family_handler(struct nl_msg *msg, void *arg)
223{
224 struct family_data *res = arg;
225 struct nlattr *tb[CTRL_ATTR_MAX + 1];
226 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
227 struct nlattr *mcgrp;
228 int i;
229
230 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
231 genlmsg_attrlen(gnlh, 0), NULL);
232 if (!tb[CTRL_ATTR_MCAST_GROUPS])
233 return NL_SKIP;
234
235 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
236 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
237 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
238 nla_len(mcgrp), NULL);
239 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
240 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
241 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
242 res->group,
243 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
244 continue;
245 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
246 break;
247 };
248
249 return NL_SKIP;
250}
251
252
253static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
254 const char *family, const char *group)
255{
256 struct nl_msg *msg;
257 int ret = -1;
258 struct family_data res = { group, -ENOENT };
259
260 msg = nlmsg_alloc();
261 if (!msg)
262 return -ENOMEM;
263 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
264 0, 0, CTRL_CMD_GETFAMILY, 0);
265 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
266
267 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
268 msg = NULL;
269 if (ret == 0)
270 ret = res.id;
271
272nla_put_failure:
273 nlmsg_free(msg);
274 return ret;
275}
276
277
3f5285e8
JM		 278static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
279{
280 struct wpa_driver_nl80211_data *drv = priv;
c2a04078
JM		 281 if (!drv->associated)
282 return -1;
283 os_memcpy(bssid, drv->bssid, ETH_ALEN);
284 return 0;
3f5285e8
JM		 285}
286
287
3f5285e8
JM		 288static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
289{
290 struct wpa_driver_nl80211_data *drv = priv;
fd05d64e
JM		 291 if (!drv->associated)
292 return -1;
293 os_memcpy(ssid, drv->ssid, drv->ssid_len);
294 return drv->ssid_len;
3f5285e8
JM		 295}
296
297
7524cfb1 298static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
08063178 299 char *buf, size_t len, int del)
3f5285e8
JM		 300{
301 union wpa_event_data event;
302
303 os_memset(&event, 0, sizeof(event));
304 if (len > sizeof(event.interface_status.ifname))
305 len = sizeof(event.interface_status.ifname) - 1;
306 os_memcpy(event.interface_status.ifname, buf, len);
307 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
308 EVENT_INTERFACE_ADDED;
309
310 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
311 del ? "DEL" : "NEW",
312 event.interface_status.ifname,
313 del ? "removed" : "added");
314
7524cfb1
JM		 315 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
316 if (del)
317 drv->if_removed = 1;
318 else
319 drv->if_removed = 0;
320 }
321
08063178 322 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
3f5285e8
JM		 323}
324
325
7524cfb1 326static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
62d680c3 327 u8 *buf, size_t len)
7524cfb1 328{
62d680c3 329 int attrlen, rta_len;
7524cfb1
JM		 330 struct rtattr *attr;
331
62d680c3
JM		 332 attrlen = len;
333 attr = (struct rtattr *) buf;
7524cfb1
JM		 334
335 rta_len = RTA_ALIGN(sizeof(struct rtattr));
336 while (RTA_OK(attr, attrlen)) {
337 if (attr->rta_type == IFLA_IFNAME) {
338 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
339 == 0)
340 return 1;
341 else
342 break;
343 }
344 attr = RTA_NEXT(attr, attrlen);
345 }
346
347 return 0;
348}
349
350
351static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
62d680c3 352 int ifindex, u8 *buf, size_t len)
7524cfb1
JM		 353{
354 if (drv->ifindex == ifindex)
355 return 1;
356
62d680c3 357 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
7524cfb1
JM		 358 drv->ifindex = if_nametoindex(drv->ifname);
359 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
360 "interface");
361 wpa_driver_nl80211_finish_drv_init(drv);
362 return 1;
363 }
364
365 return 0;
366}
367
368
62d680c3
JM		 369static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
370 struct ifinfomsg *ifi,
371 u8 *buf, size_t len)
3f5285e8 372{
08063178 373 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 374 int attrlen, rta_len;
375 struct rtattr *attr;
3f5285e8 376
62d680c3 377 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
3f5285e8
JM		 378 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
379 ifi->ifi_index);
380 return;
381 }
382
383 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
384 "(%s%s%s%s)",
385 drv->operstate, ifi->ifi_flags,
386 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
387 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
388 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
389 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
390 /*
391 * Some drivers send the association event before the operup event--in
392 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
393 * fails. This will hit us when wpa_supplicant does not need to do
394 * IEEE 802.1X authentication
395 */
396 if (drv->operstate == 1 &&
397 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
398 !(ifi->ifi_flags & IFF_RUNNING))
08063178 399 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 400 -1, IF_OPER_UP);
3f5285e8 401
62d680c3
JM		 402 attrlen = len;
403 attr = (struct rtattr *) buf;
3f5285e8
JM		 404 rta_len = RTA_ALIGN(sizeof(struct rtattr));
405 while (RTA_OK(attr, attrlen)) {
d8816397 406 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 407 wpa_driver_nl80211_event_link(
08063178 408 drv,
7524cfb1
JM		 409 ((char *) attr) + rta_len,
410 attr->rta_len - rta_len, 0);
3f5285e8
JM		 411 }
412 attr = RTA_NEXT(attr, attrlen);
413 }
414}
415
416
62d680c3
JM		 417static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
418 struct ifinfomsg *ifi,
419 u8 *buf, size_t len)
3f5285e8 420{
08063178 421 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 422 int attrlen, rta_len;
423 struct rtattr *attr;
3f5285e8 424
62d680c3
JM		 425 attrlen = len;
426 attr = (struct rtattr *) buf;
3f5285e8
JM		 427
428 rta_len = RTA_ALIGN(sizeof(struct rtattr));
429 while (RTA_OK(attr, attrlen)) {
430 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 431 wpa_driver_nl80211_event_link(
08063178 432 drv,
7524cfb1
JM		 433 ((char *) attr) + rta_len,
434 attr->rta_len - rta_len, 1);
3f5285e8
JM		 435 }
436 attr = RTA_NEXT(attr, attrlen);
437 }
438}
439
440
c2a04078
JM		 441static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
442 const u8 *frame, size_t len)
443{
444 const struct ieee80211_mgmt *mgmt;
445 union wpa_event_data event;
446
447 mgmt = (const struct ieee80211_mgmt *) frame;
448 if (len < 24 + sizeof(mgmt->u.auth)) {
449 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
450 "frame");
451 return;
452 }
453
e6b8efeb 454 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
c2a04078
JM		 455 os_memset(&event, 0, sizeof(event));
456 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
457 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
458 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
459 if (len > 24 + sizeof(mgmt->u.auth)) {
460 event.auth.ies = mgmt->u.auth.variable;
461 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
462 }
463
464 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
465}
466
467
468static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
469 const u8 *frame, size_t len)
470{
471 const struct ieee80211_mgmt *mgmt;
472 union wpa_event_data event;
473 u16 status;
474
475 mgmt = (const struct ieee80211_mgmt *) frame;
476 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
477 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
478 "frame");
479 return;
480 }
481
482 status = le_to_host16(mgmt->u.assoc_resp.status_code);
483 if (status != WLAN_STATUS_SUCCESS) {
efa46078
JM		 484 os_memset(&event, 0, sizeof(event));
485 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
486 event.assoc_reject.resp_ies =
487 (u8 *) mgmt->u.assoc_resp.variable;
488 event.assoc_reject.resp_ies_len =
489 len - 24 - sizeof(mgmt->u.assoc_resp);
490 }
491 event.assoc_reject.status_code = status;
492
493 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
c2a04078
JM		 494 return;
495 }
496
497 drv->associated = 1;
498 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
499
500 os_memset(&event, 0, sizeof(event));
501 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
502 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
503 event.assoc_info.resp_ies_len =
efa46078 504 len - 24 - sizeof(mgmt->u.assoc_resp);
c2a04078
JM		 505 }
506
4832ecd7
JM		 507 event.assoc_info.freq = drv->assoc_freq;
508
c2a04078
JM		 509 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
510}
511
c1bb3e0a 512
da72a1c1
ZY		 513static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
514 enum nl80211_commands cmd, struct nlattr *status,
515 struct nlattr *addr, struct nlattr *req_ie,
516 struct nlattr *resp_ie)
517{
518 union wpa_event_data event;
519
7da2c527
JM		 520 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
521 /*
522 * Avoid reporting two association events that would confuse
523 * the core code.
524 */
525 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
526 "when using userspace SME", cmd);
527 return;
528 }
529
da72a1c1
ZY		 530 os_memset(&event, 0, sizeof(event));
531 if (cmd == NL80211_CMD_CONNECT &&
532 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
533 if (resp_ie) {
534 event.assoc_reject.resp_ies = nla_data(resp_ie);
535 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
536 }
537 event.assoc_reject.status_code = nla_get_u16(status);
538 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
539 return;
540 }
541
542 drv->associated = 1;
543 if (addr)
544 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
545
546 if (req_ie) {
547 event.assoc_info.req_ies = nla_data(req_ie);
548 event.assoc_info.req_ies_len = nla_len(req_ie);
549 }
550 if (resp_ie) {
551 event.assoc_info.resp_ies = nla_data(resp_ie);
552 event.assoc_info.resp_ies_len = nla_len(resp_ie);
553 }
554
555 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
556}
c2a04078 557
c1bb3e0a 558
da1fb17c
JM		 559static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
560 enum nl80211_commands cmd, struct nlattr *addr)
561{
562 union wpa_event_data event;
563 enum wpa_event_type ev;
564
565 if (nla_len(addr) != ETH_ALEN)
566 return;
567
568 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
569 cmd, MAC2STR((u8 *) nla_data(addr)));
570
571 if (cmd == NL80211_CMD_AUTHENTICATE)
572 ev = EVENT_AUTH_TIMED_OUT;
573 else if (cmd == NL80211_CMD_ASSOCIATE)
574 ev = EVENT_ASSOC_TIMED_OUT;
575 else
576 return;
577
578 os_memset(&event, 0, sizeof(event));
579 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
580 wpa_supplicant_event(drv->ctx, ev, &event);
581}
582
583
c2a04078 584static void mlme_event(struct wpa_driver_nl80211_data *drv,
da1fb17c
JM		 585 enum nl80211_commands cmd, struct nlattr *frame,
586 struct nlattr *addr, struct nlattr *timed_out)
c2a04078 587{
da1fb17c
JM		 588 if (timed_out && addr) {
589 mlme_timeout_event(drv, cmd, addr);
590 return;
591 }
592
c2a04078
JM		 593 if (frame == NULL) {
594 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
595 "data", cmd);
596 return;
597 }
598
599 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
600 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
601 nla_data(frame), nla_len(frame));
602
603 switch (cmd) {
604 case NL80211_CMD_AUTHENTICATE:
605 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
606 break;
607 case NL80211_CMD_ASSOCIATE:
608 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
609 break;
610 case NL80211_CMD_DEAUTHENTICATE:
611 drv->associated = 0;
612 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
613 break;
614 case NL80211_CMD_DISASSOCIATE:
615 drv->associated = 0;
616 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
617 break;
618 default:
619 break;
620 }
621}
622
623
35583f3f
JM		 624static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
625 struct nlattr *tb[])
626{
627 union wpa_event_data data;
628
629 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
630 os_memset(&data, 0, sizeof(data));
631 if (tb[NL80211_ATTR_MAC]) {
632 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
633 nla_data(tb[NL80211_ATTR_MAC]),
634 nla_len(tb[NL80211_ATTR_MAC]));
ad1e68e6 635 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
35583f3f
JM		 636 }
637 if (tb[NL80211_ATTR_KEY_SEQ]) {
638 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
639 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
640 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
641 }
642 if (tb[NL80211_ATTR_KEY_TYPE]) {
643 enum nl80211_key_type key_type =
644 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
645 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
646 if (key_type == NL80211_KEYTYPE_PAIRWISE)
647 data.michael_mic_failure.unicast = 1;
648 } else
649 data.michael_mic_failure.unicast = 1;
650
651 if (tb[NL80211_ATTR_KEY_IDX]) {
652 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
653 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
654 }
655
656 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
657}
658
659
5cc4d64b
JM		 660static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
661 struct nlattr *tb[])
662{
663 if (tb[NL80211_ATTR_MAC] == NULL) {
664 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
665 "event");
666 return;
667 }
668 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
669 drv->associated = 1;
670 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
671 MAC2STR(drv->bssid));
672
673 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
674}
675
676
55777702
JM		 677static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
678 int cancel_event, struct nlattr *tb[])
679{
680 unsigned int freq, chan_type, duration;
681 union wpa_event_data data;
682 u64 cookie;
683
684 if (tb[NL80211_ATTR_WIPHY_FREQ])
685 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
686 else
687 freq = 0;
688
689 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
690 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
691 else
692 chan_type = 0;
693
694 if (tb[NL80211_ATTR_DURATION])
695 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
696 else
697 duration = 0;
698
699 if (tb[NL80211_ATTR_COOKIE])
700 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
701 else
702 cookie = 0;
703
704 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
705 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
706 cancel_event, freq, chan_type, duration,
707 (long long unsigned int) cookie,
708 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
709
710 if (cookie != drv->remain_on_chan_cookie)
711 return; /* not for us */
712
713 drv->pending_remain_on_chan = !cancel_event;
714
715 os_memset(&data, 0, sizeof(data));
716 data.remain_on_channel.freq = freq;
717 data.remain_on_channel.duration = duration;
718 wpa_supplicant_event(drv->ctx, cancel_event ?
719 EVENT_CANCEL_REMAIN_ON_CHANNEL :
720 EVENT_REMAIN_ON_CHANNEL, &data);
721}
722
723
8d923a4a
JM		 724static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
725 struct nlattr *tb[])
726{
727 union wpa_event_data event;
728 struct nlattr *nl;
729 int rem;
730 struct scan_info *info;
731#define MAX_REPORT_FREQS 50
732 int freqs[MAX_REPORT_FREQS];
733 int num_freqs = 0;
734
735 os_memset(&event, 0, sizeof(event));
736 info = &event.scan_info;
737 info->aborted = aborted;
738
739 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
740 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
741 struct wpa_driver_scan_ssid *s =
742 &info->ssids[info->num_ssids];
743 s->ssid = nla_data(nl);
744 s->ssid_len = nla_len(nl);
745 info->num_ssids++;
746 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
747 break;
748 }
749 }
750 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
751 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
752 {
753 freqs[num_freqs] = nla_get_u32(nl);
754 num_freqs++;
755 if (num_freqs == MAX_REPORT_FREQS - 1)
756 break;
757 }
758 info->freqs = freqs;
759 info->num_freqs = num_freqs;
760 }
761 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
762}
763
764
97865538
JM		 765static int process_event(struct nl_msg *msg, void *arg)
766{
767 struct wpa_driver_nl80211_data *drv = arg;
768 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
769 struct nlattr *tb[NL80211_ATTR_MAX + 1];
770
771 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
772 genlmsg_attrlen(gnlh, 0), NULL);
773
774 if (tb[NL80211_ATTR_IFINDEX]) {
775 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
776 if (ifindex != drv->ifindex) {
777 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
778 " for foreign interface (ifindex %d)",
779 gnlh->cmd, ifindex);
780 return NL_SKIP;
781 }
782 }
783
ad1e68e6
JM		 784 if (drv->ap_scan_as_station &&
785 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
786 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
787 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
788 drv->ap_scan_as_station = 0;
789 }
790
97865538 791 switch (gnlh->cmd) {
d942a79e
JM		 792 case NL80211_CMD_TRIGGER_SCAN:
793 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
794 break;
97865538
JM		 795 case NL80211_CMD_NEW_SCAN_RESULTS:
796 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
797 drv->scan_complete_events = 1;
798 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
799 drv->ctx);
8d923a4a 800 send_scan_event(drv, 0, tb);
97865538
JM		 801 break;
802 case NL80211_CMD_SCAN_ABORTED:
803 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
804 /*
805 * Need to indicate that scan results are available in order
806 * not to make wpa_supplicant stop its scanning.
807 */
808 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
809 drv->ctx);
8d923a4a 810 send_scan_event(drv, 1, tb);
97865538 811 break;
c2a04078
JM		 812 case NL80211_CMD_AUTHENTICATE:
813 case NL80211_CMD_ASSOCIATE:
814 case NL80211_CMD_DEAUTHENTICATE:
815 case NL80211_CMD_DISASSOCIATE:
da1fb17c
JM		 816 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
817 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
c2a04078 818 break;
da72a1c1
ZY		 819 case NL80211_CMD_CONNECT:
820 case NL80211_CMD_ROAM:
821 mlme_event_connect(drv, gnlh->cmd,
822 tb[NL80211_ATTR_STATUS_CODE],
823 tb[NL80211_ATTR_MAC],
824 tb[NL80211_ATTR_REQ_IE],
825 tb[NL80211_ATTR_RESP_IE]);
826 break;
827 case NL80211_CMD_DISCONNECT:
7da2c527
JM		 828 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
829 /*
830 * Avoid reporting two disassociation events that could
831 * confuse the core code.
832 */
833 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
834 "event when using userspace SME");
835 break;
836 }
da72a1c1
ZY		 837 drv->associated = 0;
838 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
839 break;
35583f3f
JM		 840 case NL80211_CMD_MICHAEL_MIC_FAILURE:
841 mlme_event_michael_mic_failure(drv, tb);
842 break;
5cc4d64b
JM		 843 case NL80211_CMD_JOIN_IBSS:
844 mlme_event_join_ibss(drv, tb);
845 break;
55777702
JM		 846 case NL80211_CMD_REMAIN_ON_CHANNEL:
847 mlme_event_remain_on_channel(drv, 0, tb);
848 break;
849 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
850 mlme_event_remain_on_channel(drv, 1, tb);
851 break;
97865538 852 default:
c2a04078
JM		 853 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
854 "(cmd=%d)", gnlh->cmd);
97865538
JM		 855 break;
856 }
857
858 return NL_SKIP;
859}
860
861
862static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
863 void *sock_ctx)
864{
865 struct nl_cb *cb;
866 struct wpa_driver_nl80211_data *drv = eloop_ctx;
867
868 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
869
870 cb = nl_cb_clone(drv->nl_cb);
871 if (!cb)
872 return;
873 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
874 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
335ce76b 875 nl_recvmsgs(drv->nl_handle_event, cb);
97865538
JM		 876 nl_cb_put(cb);
877}
878
879
6d158490
LR		 880/**
881 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
882 * @priv: driver_nl80211 private data
883 * @alpha2_arg: country to which to switch to
884 * Returns: 0 on success, -1 on failure
885 *
886 * This asks nl80211 to set the regulatory domain for given
887 * country ISO / IEC alpha2.
888 */
889static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
890{
891 struct wpa_driver_nl80211_data *drv = priv;
892 char alpha2[3];
893 struct nl_msg *msg;
894
895 msg = nlmsg_alloc();
896 if (!msg)
e785c2ba 897 return -ENOMEM;
6d158490
LR		 898
899 alpha2[0] = alpha2_arg[0];
900 alpha2[1] = alpha2_arg[1];
901 alpha2[2] = '\0';
902
903 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
904 0, NL80211_CMD_REQ_SET_REG, 0);
905
906 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
907 if (send_and_recv_msgs(drv, msg, NULL, NULL))
908 return -EINVAL;
909 return 0;
910nla_put_failure:
911 return -EINVAL;
912}
913
914
bbaf0837 915#ifndef HOSTAPD
80bc75f1
JM		 916struct wiphy_info_data {
917 int max_scan_ssids;
1581b38b 918 int ap_supported;
93d11400
ZY		 919 int auth_supported;
920 int connect_supported;
80bc75f1
JM		 921};
922
923
924static int wiphy_info_handler(struct nl_msg *msg, void *arg)
925{
926 struct nlattr *tb[NL80211_ATTR_MAX + 1];
927 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
928 struct wiphy_info_data *info = arg;
929
930 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
931 genlmsg_attrlen(gnlh, 0), NULL);
932
933 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
934 info->max_scan_ssids =
935 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
936
1581b38b
JM		 937 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
938 struct nlattr *nl_mode;
939 int i;
940 nla_for_each_nested(nl_mode,
941 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
942 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
943 info->ap_supported = 1;
944 break;
945 }
946 }
947 }
948
93d11400
ZY		 949 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
950 struct nlattr *nl_cmd;
951 int i;
952
953 nla_for_each_nested(nl_cmd,
954 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
955 u32 cmd = nla_get_u32(nl_cmd);
956 if (cmd == NL80211_CMD_AUTHENTICATE)
957 info->auth_supported = 1;
958 else if (cmd == NL80211_CMD_CONNECT)
959 info->connect_supported = 1;
960 }
961 }
962
80bc75f1
JM		 963 return NL_SKIP;
964}
965
966
967static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
968 struct wiphy_info_data *info)
969{
970 struct nl_msg *msg;
971
972 os_memset(info, 0, sizeof(*info));
973 msg = nlmsg_alloc();
974 if (!msg)
975 return -1;
976
977 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
978 0, NL80211_CMD_GET_WIPHY, 0);
979
980 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
981
982 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
983 return 0;
984 msg = NULL;
985nla_put_failure:
986 nlmsg_free(msg);
987 return -1;
988}
989
990
93d11400 991static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
80bc75f1
JM		 992{
993 struct wiphy_info_data info;
994 if (wpa_driver_nl80211_get_info(drv, &info))
93d11400 995 return -1;
80bc75f1 996 drv->has_capability = 1;
1b2a72e8
JM		 997 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
998 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
999 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1000 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1001 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1002 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1003 WPA_DRIVER_CAPA_ENC_WEP104 |
1004 WPA_DRIVER_CAPA_ENC_TKIP |
1005 WPA_DRIVER_CAPA_ENC_CCMP;
291b6068
JM		 1006 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1007 WPA_DRIVER_AUTH_SHARED |
1008 WPA_DRIVER_AUTH_LEAP;
1b2a72e8 1009
80bc75f1 1010 drv->capa.max_scan_ssids = info.max_scan_ssids;
1581b38b
JM		 1011 if (info.ap_supported)
1012 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
93d11400
ZY		 1013
1014 if (info.auth_supported)
1015 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1016 else if (!info.connect_supported) {
1017 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1018 "authentication/association or connect commands");
1019 return -1;
1020 }
1021
0194fedb
JB		 1022 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1023
93d11400 1024 return 0;
80bc75f1 1025}
bbaf0837 1026#endif /* HOSTAPD */
80bc75f1
JM		 1027
1028
9fff9fdc
JM		 1029static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1030 void *ctx)
3f5285e8 1031{
9fff9fdc 1032 int ret;
3f5285e8 1033
9fff9fdc 1034 /* Initialize generic netlink and nl80211 */
3f5285e8
JM		 1035
1036 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1037 if (drv->nl_cb == NULL) {
1038 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1039 "callbacks");
1040 goto err1;
1041 }
1042
1043 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1044 if (drv->nl_handle == NULL) {
1045 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1046 "callbacks");
1047 goto err2;
1048 }
1049
335ce76b
JM		 1050 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1051 if (drv->nl_handle_event == NULL) {
1052 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1053 "callbacks (event)");
1054 goto err2b;
1055 }
1056
3f5285e8
JM		 1057 if (genl_connect(drv->nl_handle)) {
1058 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1059 "netlink");
1060 goto err3;
1061 }
1062
335ce76b
JM		 1063 if (genl_connect(drv->nl_handle_event)) {
1064 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1065 "netlink (event)");
1066 goto err3;
1067 }
1068
9fff9fdc
JM		 1069#ifdef CONFIG_LIBNL20
1070 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1071 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1072 "netlink cache");
1073 goto err3;
1074 }
335ce76b
JM		 1075 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1076 0) {
1077 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1078 "netlink cache (event)");
1079 goto err3b;
1080 }
9fff9fdc 1081#else /* CONFIG_LIBNL20 */
3f5285e8
JM		 1082 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1083 if (drv->nl_cache == NULL) {
1084 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1085 "netlink cache");
1086 goto err3;
1087 }
335ce76b
JM		 1088 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1089 if (drv->nl_cache_event == NULL) {
1090 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1091 "netlink cache (event)");
1092 goto err3b;
1093 }
9fff9fdc
JM		 1094#endif /* CONFIG_LIBNL20 */
1095
3f5285e8
JM		 1096 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1097 if (drv->nl80211 == NULL) {
1098 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1099 "found");
1100 goto err4;
1101 }
1102
97865538
JM		 1103 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1104 if (ret >= 0)
335ce76b 1105 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
97865538
JM		 1106 if (ret < 0) {
1107 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1108 "membership for scan events: %d (%s)",
1109 ret, strerror(-ret));
1110 goto err4;
1111 }
c2a04078
JM		 1112
1113 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1114 if (ret >= 0)
335ce76b 1115 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
c2a04078
JM		 1116 if (ret < 0) {
1117 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1118 "membership for mlme events: %d (%s)",
1119 ret, strerror(-ret));
1120 goto err4;
1121 }
c2a04078 1122
335ce76b 1123 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
97865538
JM		 1124 wpa_driver_nl80211_event_receive, drv, ctx);
1125
9fff9fdc
JM		 1126 return 0;
1127
1128err4:
335ce76b
JM		 1129 nl_cache_free(drv->nl_cache_event);
1130err3b:
9fff9fdc
JM		 1131 nl_cache_free(drv->nl_cache);
1132err3:
335ce76b
JM		 1133 nl_handle_destroy(drv->nl_handle_event);
1134err2b:
9fff9fdc
JM		 1135 nl_handle_destroy(drv->nl_handle);
1136err2:
1137 nl_cb_put(drv->nl_cb);
1138err1:
1139 return -1;
1140}
1141
1142
1143/**
1144 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1145 * @ctx: context to be used when calling wpa_supplicant functions,
1146 * e.g., wpa_supplicant_event()
1147 * @ifname: interface name, e.g., wlan0
1148 * Returns: Pointer to private data, %NULL on failure
1149 */
1150static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1151{
9fff9fdc 1152 struct wpa_driver_nl80211_data *drv;
08063178 1153 struct netlink_config *cfg;
9fff9fdc
JM		 1154
1155 drv = os_zalloc(sizeof(*drv));
1156 if (drv == NULL)
1157 return NULL;
1158 drv->ctx = ctx;
1159 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
9fff9fdc
JM		 1160 drv->monitor_ifidx = -1;
1161 drv->monitor_sock = -1;
bbaf0837 1162 drv->ioctl_sock = -1;
9fff9fdc 1163
bbaf0837
JM		 1164 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1165 os_free(drv);
1166 return NULL;
1167 }
9fff9fdc 1168
3f5285e8
JM		 1169 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1170 if (drv->ioctl_sock < 0) {
1171 perror("socket(PF_INET,SOCK_DGRAM)");
bbaf0837 1172 goto failed;
3f5285e8
JM		 1173 }
1174
08063178
JM		 1175 cfg = os_zalloc(sizeof(*cfg));
1176 if (cfg == NULL)
1177 goto failed;
1178 cfg->ctx = drv;
1179 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1180 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1181 drv->netlink = netlink_init(cfg);
1182 if (drv->netlink == NULL) {
1183 os_free(cfg);
1184 goto failed;
1185 }
1186 if (wpa_driver_nl80211_finish_drv_init(drv))
bbaf0837 1187 goto failed;
7524cfb1
JM		 1188
1189 return drv;
1190
bbaf0837 1191failed:
08063178 1192 netlink_deinit(drv->netlink);
bbaf0837
JM		 1193 if (drv->ioctl_sock >= 0)
1194 close(drv->ioctl_sock);
1195
7524cfb1 1196 genl_family_put(drv->nl80211);
7524cfb1 1197 nl_cache_free(drv->nl_cache);
7524cfb1 1198 nl_handle_destroy(drv->nl_handle);
7524cfb1 1199 nl_cb_put(drv->nl_cb);
bbaf0837 1200
7524cfb1
JM		 1201 os_free(drv);
1202 return NULL;
1203}
1204
1205
362f781e 1206static int
7524cfb1
JM		 1207wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1208{
a87c9d96
JM		 1209 drv->ifindex = if_nametoindex(drv->ifname);
1210
bbaf0837 1211#ifndef HOSTAPD
ad1e68e6 1212 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
a87c9d96
JM		 1213 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1214 "use managed mode");
1215 }
1216
34f2f814
JM		 1217 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1)) {
1218 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
1219 drv->ifname);
362f781e
JM		 1220 return -1;
1221 }
3f5285e8 1222
93d11400
ZY		 1223 if (wpa_driver_nl80211_capa(drv))
1224 return -1;
80bc75f1 1225
08063178 1226 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 1227 1, IF_OPER_DORMANT);
bbaf0837 1228#endif /* HOSTAPD */
362f781e
JM		 1229
1230 return 0;
3f5285e8
JM		 1231}
1232
1233
bbaf0837
JM		 1234#ifdef HOSTAPD
1235static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1236{
1237 struct i802_bss *bss, *prev;
1238 bss = drv->bss.next;
1239 while (bss) {
1240 prev = bss;
1241 bss = bss->next;
1242 os_free(bss);
1243 }
1244}
1245#endif /* HOSTAPD */
1246
1247
8a27af5c
JM		 1248static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1249{
1250 struct nl_msg *msg;
1251
1252 msg = nlmsg_alloc();
1253 if (!msg)
1254 return -ENOMEM;
1255
1256 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1257 0, NL80211_CMD_DEL_BEACON, 0);
1258 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1259
1260 return send_and_recv_msgs(drv, msg, NULL, NULL);
1261 nla_put_failure:
1262 return -ENOBUFS;
1263}
8a27af5c
JM		 1264
1265
3f5285e8 1266/**
7e5ba1b9
JM		 1267 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1268 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3f5285e8
JM		 1269 *
1270 * Shut down driver interface and processing of driver events. Free
1271 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1272 */
7e5ba1b9 1273static void wpa_driver_nl80211_deinit(void *priv)
3f5285e8
JM		 1274{
1275 struct wpa_driver_nl80211_data *drv = priv;
3f5285e8 1276
94627f6c
JM		 1277 if (drv->added_if_into_bridge) {
1278 if (linux_br_del_if(drv->ioctl_sock, drv->brname, drv->ifname)
1279 < 0)
1280 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1281 "interface %s from bridge %s: %s",
1282 drv->ifname, drv->brname, strerror(errno));
1283 }
1284 if (drv->added_bridge) {
1285 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1286 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1287 "bridge %s: %s",
1288 drv->brname, strerror(errno));
1289 }
1290
460456f8 1291 nl80211_remove_monitor_interface(drv);
8a27af5c
JM		 1292
1293 if (drv->nlmode == NL80211_IFTYPE_AP)
1294 wpa_driver_nl80211_del_beacon(drv);
0915d02c 1295
bbaf0837
JM		 1296#ifdef HOSTAPD
1297 if (drv->last_freq_ht) {
1298 /* Clear HT flags from the driver */
1299 struct hostapd_freq_params freq;
1300 os_memset(&freq, 0, sizeof(freq));
1301 freq.freq = drv->last_freq;
1302 i802_set_freq(priv, &freq);
1303 }
1304
bbaf0837
JM		 1305 if (drv->eapol_sock >= 0) {
1306 eloop_unregister_read_sock(drv->eapol_sock);
1307 close(drv->eapol_sock);
1308 }
1309
1310 if (drv->if_indices != drv->default_if_indices)
1311 os_free(drv->if_indices);
1312
1313 wpa_driver_nl80211_free_bss(drv);
1b648c7e 1314#endif /* HOSTAPD */
3f5285e8 1315
4e5cb1a3
JM		 1316 if (drv->disable_11b_rates)
1317 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1318
08063178
JM		 1319 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1320 netlink_deinit(drv->netlink);
3f5285e8 1321
bbaf0837
JM		 1322 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1323
34f2f814 1324 (void) linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0);
ad1e68e6 1325 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
3f5285e8 1326
bbaf0837
JM		 1327 if (drv->ioctl_sock >= 0)
1328 close(drv->ioctl_sock);
3f5285e8 1329
335ce76b 1330 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
3f5285e8
JM		 1331 genl_family_put(drv->nl80211);
1332 nl_cache_free(drv->nl_cache);
335ce76b 1333 nl_cache_free(drv->nl_cache_event);
3f5285e8 1334 nl_handle_destroy(drv->nl_handle);
335ce76b 1335 nl_handle_destroy(drv->nl_handle_event);
3f5285e8
JM		 1336 nl_cb_put(drv->nl_cb);
1337
504e905c
JM		 1338 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1339 drv, NULL);
1340
3f5285e8
JM		 1341 os_free(drv);
1342}
1343
1344
1345/**
1346 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
ad1e68e6 1347 * @eloop_ctx: Driver private data
3f5285e8
JM		 1348 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1349 *
1350 * This function can be used as registered timeout when starting a scan to
1351 * generate a scan completed event if the driver does not report this.
1352 */
1353static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1354{
ad1e68e6
JM		 1355 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1356 if (drv->ap_scan_as_station) {
1357 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1358 drv->ap_scan_as_station = 0;
1359 }
3f5285e8
JM		 1360 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1361 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1362}
1363
1364
1365/**
1366 * wpa_driver_nl80211_scan - Request the driver to initiate scan
ad1e68e6 1367 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
6a1063e0 1368 * @params: Scan parameters
3f5285e8
JM		 1369 * Returns: 0 on success, -1 on failure
1370 */
6a1063e0
JM		 1371static int wpa_driver_nl80211_scan(void *priv,
1372 struct wpa_driver_scan_params *params)
3f5285e8
JM		 1373{
1374 struct wpa_driver_nl80211_data *drv = priv;
3f5285e8 1375 int ret = 0, timeout;
d3a98225 1376 struct nl_msg *msg, *ssids, *freqs;
6a1063e0 1377 size_t i;
3f5285e8 1378
0e75527f
JM		 1379 msg = nlmsg_alloc();
1380 ssids = nlmsg_alloc();
d3a98225
JM		 1381 freqs = nlmsg_alloc();
1382 if (!msg || !ssids || !freqs) {
0e75527f
JM		 1383 nlmsg_free(msg);
1384 nlmsg_free(ssids);
d3a98225 1385 nlmsg_free(freqs);
3f5285e8
JM		 1386 return -1;
1387 }
1388
0e75527f
JM		 1389 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1390 NL80211_CMD_TRIGGER_SCAN, 0);
1391
1392 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1393
6a1063e0
JM		 1394 for (i = 0; i < params->num_ssids; i++) {
1395 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1396 params->ssids[i].ssid);
3f5285e8 1397 }
6a1063e0
JM		 1398 if (params->num_ssids)
1399 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3f5285e8 1400
d173df52
JM		 1401 if (params->extra_ies) {
1402 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1403 params->extra_ies);
1404 }
1405
d3a98225
JM		 1406 if (params->freqs) {
1407 for (i = 0; params->freqs[i]; i++)
1408 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1409 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1410 }
1411
0e75527f
JM		 1412 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1413 msg = NULL;
1414 if (ret) {
1415 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1416 "(%s)", ret, strerror(-ret));
ad1e68e6
JM		 1417#ifdef HOSTAPD
1418 if (drv->nlmode == NL80211_IFTYPE_AP) {
1419 /*
1420 * mac80211 does not allow scan requests in AP mode, so
1421 * try to do this in station mode.
1422 */
1423 if (wpa_driver_nl80211_set_mode(drv,
1424 IEEE80211_MODE_INFRA))
1425 goto nla_put_failure;
1426
1427 if (wpa_driver_nl80211_scan(drv, params)) {
1428 wpa_driver_nl80211_set_mode(drv,
1429 IEEE80211_MODE_AP);
1430 goto nla_put_failure;
1431 }
1432
1433 /* Restore AP mode when processing scan results */
1434 drv->ap_scan_as_station = 1;
1435 ret = 0;
1436 } else
1437 goto nla_put_failure;
1438#else /* HOSTAPD */
0e75527f 1439 goto nla_put_failure;
ad1e68e6 1440#endif /* HOSTAPD */
3f5285e8
JM		 1441 }
1442
1443 /* Not all drivers generate "scan completed" wireless event, so try to
1444 * read results after a timeout. */
0e75527f 1445 timeout = 10;
3f5285e8
JM		 1446 if (drv->scan_complete_events) {
1447 /*
d173df52
JM		 1448 * The driver seems to deliver events to notify when scan is
1449 * complete, so use longer timeout to avoid race conditions
1450 * with scanning and following association request.
3f5285e8
JM		 1451 */
1452 timeout = 30;
1453 }
1454 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1455 "seconds", ret, timeout);
1456 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
0e75527f
JM		 1457 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1458 drv, drv->ctx);
3f5285e8 1459
0e75527f
JM		 1460nla_put_failure:
1461 nlmsg_free(ssids);
1462 nlmsg_free(msg);
d3a98225 1463 nlmsg_free(freqs);
3f5285e8
JM		 1464 return ret;
1465}
1466
1467
b3db1e1c 1468static int bss_info_handler(struct nl_msg *msg, void *arg)
3f5285e8 1469{
b3db1e1c
JM		 1470 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1471 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1472 struct nlattr *bss[NL80211_BSS_MAX + 1];
1473 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1474 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1475 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1476 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1477 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1478 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1479 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1480 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1481 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
e6b8efeb 1482 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
b3ad11bb 1483 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
8c090654 1484 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
b3db1e1c
JM		 1485 };
1486 struct wpa_scan_results *res = arg;
3f5285e8
JM		 1487 struct wpa_scan_res **tmp;
1488 struct wpa_scan_res *r;
8c090654
JM		 1489 const u8 *ie, *beacon_ie;
1490 size_t ie_len, beacon_ie_len;
1491 u8 *pos;
3f5285e8 1492
b3db1e1c
JM		 1493 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1494 genlmsg_attrlen(gnlh, 0), NULL);
1495 if (!tb[NL80211_ATTR_BSS])
1496 return NL_SKIP;
1497 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1498 bss_policy))
1499 return NL_SKIP;
1500 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1501 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1502 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1503 } else {
1504 ie = NULL;
1505 ie_len = 0;
1506 }
8c090654
JM		 1507 if (bss[NL80211_BSS_BEACON_IES]) {
1508 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1509 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1510 } else {
1511 beacon_ie = NULL;
1512 beacon_ie_len = 0;
1513 }
3f5285e8 1514
8c090654 1515 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3f5285e8 1516 if (r == NULL)
b3db1e1c
JM		 1517 return NL_SKIP;
1518 if (bss[NL80211_BSS_BSSID])
1519 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1520 ETH_ALEN);
1521 if (bss[NL80211_BSS_FREQUENCY])
1522 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1523 if (bss[NL80211_BSS_BEACON_INTERVAL])
1524 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1525 if (bss[NL80211_BSS_CAPABILITY])
1526 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
7c2849d2
JM		 1527 r->flags |= WPA_SCAN_NOISE_INVALID;
1528 if (bss[NL80211_BSS_SIGNAL_MBM]) {
b3db1e1c 1529 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
7c2849d2
JM		 1530 r->level /= 100; /* mBm to dBm */
1531 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1532 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1533 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1534 r->flags |= WPA_SCAN_LEVEL_INVALID;
1535 } else
1536 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
b3db1e1c
JM		 1537 if (bss[NL80211_BSS_TSF])
1538 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
b3ad11bb
JM		 1539 if (bss[NL80211_BSS_SEEN_MS_AGO])
1540 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
b3db1e1c 1541 r->ie_len = ie_len;
8c090654
JM		 1542 pos = (u8 *) (r + 1);
1543 if (ie) {
1544 os_memcpy(pos, ie, ie_len);
1545 pos += ie_len;
1546 }
1547 r->beacon_ie_len = beacon_ie_len;
1548 if (beacon_ie)
1549 os_memcpy(pos, beacon_ie, beacon_ie_len);
3f5285e8 1550
e6b8efeb
JM		 1551 if (bss[NL80211_BSS_STATUS]) {
1552 enum nl80211_bss_status status;
1553 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1554 switch (status) {
1555 case NL80211_BSS_STATUS_AUTHENTICATED:
1556 r->flags |= WPA_SCAN_AUTHENTICATED;
1557 break;
1558 case NL80211_BSS_STATUS_ASSOCIATED:
1559 r->flags |= WPA_SCAN_ASSOCIATED;
1560 break;
1561 default:
1562 break;
1563 }
1564 }
1565
3f5285e8
JM		 1566 tmp = os_realloc(res->res,
1567 (res->num + 1) * sizeof(struct wpa_scan_res *));
1568 if (tmp == NULL) {
1569 os_free(r);
b3db1e1c 1570 return NL_SKIP;
3f5285e8
JM		 1571 }
1572 tmp[res->num++] = r;
1573 res->res = tmp;
b3db1e1c
JM		 1574
1575 return NL_SKIP;
3f5285e8 1576}
b3db1e1c 1577
3f5285e8 1578
d72aad94
JM		 1579static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1580 const u8 *addr)
1581{
1582 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1583 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
582507be 1584 "mismatch (" MACSTR ")", MAC2STR(addr));
d72aad94
JM		 1585 wpa_driver_nl80211_mlme(drv, addr,
1586 NL80211_CMD_DEAUTHENTICATE,
1587 WLAN_REASON_PREV_AUTH_NOT_VALID);
1588 }
1589}
1590
1591
e6b8efeb
JM		 1592static void wpa_driver_nl80211_check_bss_status(
1593 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1594{
1595 size_t i;
1596
1597 for (i = 0; i < res->num; i++) {
1598 struct wpa_scan_res *r = res->res[i];
1599 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1600 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1601 "indicates BSS status with " MACSTR
1602 " as authenticated",
1603 MAC2STR(r->bssid));
1604 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1605 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1606 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1607 0) {
1608 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1609 " in local state (auth=" MACSTR
1610 " assoc=" MACSTR ")",
1611 MAC2STR(drv->auth_bssid),
1612 MAC2STR(drv->bssid));
582507be 1613 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1614 }
1615 }
1616
1617 if (r->flags & WPA_SCAN_ASSOCIATED) {
1618 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1619 "indicate BSS status with " MACSTR
1620 " as associated",
1621 MAC2STR(r->bssid));
1622 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1623 !drv->associated) {
1624 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1625 "(not associated) does not match "
1626 "with BSS state");
d72aad94 1627 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1628 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1629 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1630 0) {
1631 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1632 "(associated with " MACSTR ") does "
1633 "not match with BSS state",
d72aad94
JM		 1634 MAC2STR(drv->bssid));
1635 clear_state_mismatch(drv, r->bssid);
1636 clear_state_mismatch(drv, drv->bssid);
e6b8efeb
JM		 1637 }
1638 }
1639 }
1640}
1641
1642
d1f9c410
JM		 1643static void wpa_scan_results_free(struct wpa_scan_results *res)
1644{
1645 size_t i;
1646
1647 if (res == NULL)
1648 return;
1649
1650 for (i = 0; i < res->num; i++)
1651 os_free(res->res[i]);
1652 os_free(res->res);
1653 os_free(res);
1654}
1655
1656
7e5ba1b9 1657static struct wpa_scan_results *
8856462d 1658nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3f5285e8 1659{
b3db1e1c 1660 struct nl_msg *msg;
3f5285e8 1661 struct wpa_scan_results *res;
b3db1e1c 1662 int ret;
3f5285e8
JM		 1663
1664 res = os_zalloc(sizeof(*res));
b3db1e1c 1665 if (res == NULL)
8e2c104f 1666 return NULL;
b3db1e1c
JM		 1667 msg = nlmsg_alloc();
1668 if (!msg)
1669 goto nla_put_failure;
3f5285e8 1670
b3db1e1c
JM		 1671 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1672 NL80211_CMD_GET_SCAN, 0);
1673 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1674
b3db1e1c
JM		 1675 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1676 msg = NULL;
1677 if (ret == 0) {
1678 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1679 (unsigned long) res->num);
1680 return res;
3f5285e8 1681 }
b3db1e1c
JM		 1682 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1683 "(%s)", ret, strerror(-ret));
1684nla_put_failure:
1685 nlmsg_free(msg);
1686 wpa_scan_results_free(res);
1687 return NULL;
3f5285e8
JM		 1688}
1689
1690
8856462d
JM		 1691/**
1692 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1693 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1694 * Returns: Scan results on success, -1 on failure
1695 */
1696static struct wpa_scan_results *
1697wpa_driver_nl80211_get_scan_results(void *priv)
1698{
1699 struct wpa_driver_nl80211_data *drv = priv;
1700 struct wpa_scan_results *res;
1701
1702 res = nl80211_get_scan_results(drv);
1703 if (res)
1704 wpa_driver_nl80211_check_bss_status(drv, res);
1705 return res;
1706}
1707
1708
1709static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
1710{
1711 struct wpa_scan_results *res;
1712 size_t i;
1713
1714 res = nl80211_get_scan_results(drv);
1715 if (res == NULL) {
1716 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
1717 return;
1718 }
1719
1720 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
1721 for (i = 0; i < res->num; i++) {
1722 struct wpa_scan_res *r = res->res[i];
1723 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
1724 (int) i, (int) res->num, MAC2STR(r->bssid),
1725 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
1726 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
1727 }
1728
1729 wpa_scan_results_free(res);
1730}
1731
1732
642187d6 1733static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
71934751
JM		 1734 enum wpa_alg alg, const u8 *addr,
1735 int key_idx, int set_tx,
642187d6
JM		 1736 const u8 *seq, size_t seq_len,
1737 const u8 *key, size_t key_len)
3f5285e8 1738{
642187d6
JM		 1739 struct wpa_driver_nl80211_data *drv = priv;
1740 int ifindex = if_nametoindex(ifname);
3f5285e8 1741 struct nl_msg *msg;
1ad1cdc2 1742 int ret;
3f5285e8 1743
1ad1cdc2
JM		 1744 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1745 "set_tx=%d seq_len=%lu key_len=%lu",
1746 __func__, ifindex, alg, addr, key_idx, set_tx,
3f5285e8
JM		 1747 (unsigned long) seq_len, (unsigned long) key_len);
1748
1749 msg = nlmsg_alloc();
1ad1cdc2
JM		 1750 if (!msg)
1751 return -ENOMEM;
3f5285e8
JM		 1752
1753 if (alg == WPA_ALG_NONE) {
1ad1cdc2
JM		 1754 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1755 0, NL80211_CMD_DEL_KEY, 0);
3f5285e8 1756 } else {
1ad1cdc2
JM		 1757 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1758 0, NL80211_CMD_NEW_KEY, 0);
3f5285e8 1759 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
d723bab4
JM		 1760 switch (alg) {
1761 case WPA_ALG_WEP:
1762 if (key_len == 5)
1763 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1764 WLAN_CIPHER_SUITE_WEP40);
1765 else
1766 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1767 WLAN_CIPHER_SUITE_WEP104);
1768 break;
1769 case WPA_ALG_TKIP:
1770 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1771 WLAN_CIPHER_SUITE_TKIP);
1772 break;
1773 case WPA_ALG_CCMP:
1774 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1775 WLAN_CIPHER_SUITE_CCMP);
1776 break;
1777 case WPA_ALG_IGTK:
1778 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1779 WLAN_CIPHER_SUITE_AES_CMAC);
1780 break;
1781 default:
1782 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1783 "algorithm %d", __func__, alg);
3f5285e8
JM		 1784 nlmsg_free(msg);
1785 return -1;
1786 }
1787 }
1788
849ef835 1789 if (seq && seq_len)
1ad1cdc2
JM		 1790 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1791
3f5285e8
JM		 1792 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1793 {
1794 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1795 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1796 }
1797 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1ad1cdc2 1798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3f5285e8 1799
1ad1cdc2
JM		 1800 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1801 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1802 ret = 0;
1803 if (ret)
1804 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1805 ret, strerror(-ret));
3f5285e8 1806
1ad1cdc2
JM		 1807 /*
1808 * If we failed or don't need to set the default TX key (below),
1809 * we're done here.
1810 */
1811 if (ret || !set_tx || alg == WPA_ALG_NONE)
1812 return ret;
1813#ifdef HOSTAPD /* FIX: is this needed? */
1814 if (addr)
1815 return ret;
1816#endif /* HOSTAPD */
3f5285e8 1817
1ad1cdc2
JM		 1818 msg = nlmsg_alloc();
1819 if (!msg)
1820 return -ENOMEM;
3f5285e8 1821
1ad1cdc2
JM		 1822 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1823 0, NL80211_CMD_SET_KEY, 0);
1824 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1825 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1826 if (alg == WPA_ALG_IGTK)
1827 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1828 else
1829 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3f5285e8 1830
1ad1cdc2
JM		 1831 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1832 if (ret == -ENOENT)
1833 ret = 0;
1834 if (ret)
1835 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1836 "err=%d %s)", ret, strerror(-ret));
1837 return ret;
3f5285e8
JM		 1838
1839nla_put_failure:
6241fcb1 1840 return -ENOBUFS;
3f5285e8
JM		 1841}
1842
1843
71934751 1844static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
0194fedb
JB		 1845 int key_idx, int defkey,
1846 const u8 *seq, size_t seq_len,
1847 const u8 *key, size_t key_len)
1848{
1849 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1850 if (!key_attr)
1851 return -1;
1852
1853 if (defkey && alg == WPA_ALG_IGTK)
1854 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1855 else if (defkey)
1856 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1857
1858 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1859
d723bab4
JM		 1860 switch (alg) {
1861 case WPA_ALG_WEP:
1862 if (key_len == 5)
2aa5f847
JM		 1863 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1864 WLAN_CIPHER_SUITE_WEP40);
d723bab4 1865 else
2aa5f847
JM		 1866 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1867 WLAN_CIPHER_SUITE_WEP104);
d723bab4
JM		 1868 break;
1869 case WPA_ALG_TKIP:
2aa5f847 1870 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
d723bab4
JM		 1871 break;
1872 case WPA_ALG_CCMP:
2aa5f847 1873 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
d723bab4
JM		 1874 break;
1875 case WPA_ALG_IGTK:
2aa5f847
JM		 1876 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1877 WLAN_CIPHER_SUITE_AES_CMAC);
d723bab4
JM		 1878 break;
1879 default:
1880 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1881 "algorithm %d", __func__, alg);
0194fedb 1882 return -1;
d723bab4 1883 }
0194fedb
JB		 1884
1885 if (seq && seq_len)
1886 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1887
1888 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1889
1890 nla_nest_end(msg, key_attr);
1891
1892 return 0;
1893 nla_put_failure:
1894 return -1;
1895}
1896
c811d5bc 1897
cfaab580
ZY		 1898static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1899 struct nl_msg *msg)
1900{
1901 int i, privacy = 0;
1902 struct nlattr *nl_keys, *nl_key;
1903
1904 for (i = 0; i < 4; i++) {
1905 if (!params->wep_key[i])
1906 continue;
1907 privacy = 1;
1908 break;
1909 }
1910 if (!privacy)
1911 return 0;
1912
1913 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1914
1915 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1916 if (!nl_keys)
1917 goto nla_put_failure;
1918
1919 for (i = 0; i < 4; i++) {
1920 if (!params->wep_key[i])
1921 continue;
1922
1923 nl_key = nla_nest_start(msg, i);
1924 if (!nl_key)
1925 goto nla_put_failure;
1926
1927 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1928 params->wep_key[i]);
1929 if (params->wep_key_len[i] == 5)
1930 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1931 WLAN_CIPHER_SUITE_WEP40);
1932 else
1933 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1934 WLAN_CIPHER_SUITE_WEP104);
1935
1936 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1937
1938 if (i == params->wep_tx_keyidx)
1939 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1940
1941 nla_nest_end(msg, nl_key);
1942 }
1943 nla_nest_end(msg, nl_keys);
1944
1945 return 0;
1946
1947nla_put_failure:
1948 return -ENOBUFS;
1949}
1950
1951
c2a04078
JM		 1952static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1953 const u8 *addr, int cmd, u16 reason_code)
1954{
1955 int ret = -1;
1956 struct nl_msg *msg;
1957
1958 msg = nlmsg_alloc();
1959 if (!msg)
1960 return -1;
1961
1962 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1963
1964 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1965 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1966 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1967
1968 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1969 msg = NULL;
1970 if (ret) {
1971 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1972 "(%s)", ret, strerror(-ret));
1973 goto nla_put_failure;
1974 }
1975 ret = 0;
1976
1977nla_put_failure:
1978 nlmsg_free(msg);
1979 return ret;
1980}
3f5285e8
JM		 1981
1982
cfaab580
ZY		 1983static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1984 const u8 *addr, int reason_code)
1985{
1986 wpa_printf(MSG_DEBUG, "%s", __func__);
1987 drv->associated = 0;
1988 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1989 reason_code);
1990}
1991
1992
3f5285e8 1993static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
c2a04078 1994 int reason_code)
3f5285e8
JM		 1995{
1996 struct wpa_driver_nl80211_data *drv = priv;
cfaab580
ZY		 1997 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1998 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 1999 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2000 drv->associated = 0;
c2a04078
JM		 2001 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
2002 reason_code);
3f5285e8
JM		 2003}
2004
2005
2006static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
c2a04078 2007 int reason_code)
3f5285e8
JM		 2008{
2009 struct wpa_driver_nl80211_data *drv = priv;
cfaab580
ZY		 2010 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2011 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2012 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2013 drv->associated = 0;
c2a04078
JM		 2014 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2015 reason_code);
3f5285e8
JM		 2016}
2017
2018
c2a04078
JM		 2019static int wpa_driver_nl80211_authenticate(
2020 void *priv, struct wpa_driver_auth_params *params)
2021{
2022 struct wpa_driver_nl80211_data *drv = priv;
a0b2f99b 2023 int ret = -1, i;
c2a04078
JM		 2024 struct nl_msg *msg;
2025 enum nl80211_auth_type type;
6d6f4bb8 2026 int count = 0;
c2a04078
JM		 2027
2028 drv->associated = 0;
e6b8efeb 2029 os_memset(drv->auth_bssid, 0, ETH_ALEN);
af473088
JM		 2030 /* FIX: IBSS mode */
2031 if (drv->nlmode != NL80211_IFTYPE_STATION)
2032 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
c2a04078 2033
4a867032
JM		 2034 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2035 return -1;
2036
6d6f4bb8 2037retry:
c2a04078
JM		 2038 msg = nlmsg_alloc();
2039 if (!msg)
2040 return -1;
2041
2042 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2043 drv->ifindex);
a0b2f99b 2044
0194fedb
JB		 2045 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2046 NL80211_CMD_AUTHENTICATE, 0);
2047
a0b2f99b
JM		 2048 for (i = 0; i < 4; i++) {
2049 if (!params->wep_key[i])
2050 continue;
642187d6
JM		 2051 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2052 i,
a0b2f99b
JM		 2053 i == params->wep_tx_keyidx, NULL, 0,
2054 params->wep_key[i],
2055 params->wep_key_len[i]);
0194fedb
JB		 2056 if (params->wep_tx_keyidx != i)
2057 continue;
2058 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2059 params->wep_key[i], params->wep_key_len[i])) {
2060 nlmsg_free(msg);
2061 return -1;
2062 }
a0b2f99b
JM		 2063 }
2064
c2a04078
JM		 2065 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2066 if (params->bssid) {
2067 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2068 MAC2STR(params->bssid));
2069 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2070 }
2071 if (params->freq) {
2072 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2073 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2074 }
2075 if (params->ssid) {
2076 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2077 params->ssid, params->ssid_len);
2078 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2079 params->ssid);
2080 }
2081 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2082 if (params->ie)
2083 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2084 /*
2085 * TODO: if multiple auth_alg options enabled, try them one by one if
2086 * the AP rejects authentication due to unknown auth alg
2087 */
abd9fafa 2088 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
c2a04078 2089 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 2090 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
c2a04078 2091 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 2092 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
c2a04078 2093 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 2094 else if (params->auth_alg & WPA_AUTH_ALG_FT)
c2a04078
JM		 2095 type = NL80211_AUTHTYPE_FT;
2096 else
2097 goto nla_put_failure;
2098 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2099 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2100
2101 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2102 msg = NULL;
2103 if (ret) {
2104 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2105 "(%s)", ret, strerror(-ret));
6d6f4bb8
JM		 2106 count++;
2107 if (ret == -EALREADY && count == 1 && params->bssid) {
2108 /*
2109 * mac80211 does not currently accept new
2110 * authentication if we are already authenticated. As a
2111 * workaround, force deauthentication and try again.
2112 */
2113 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2114 "after forced deauthentication");
2115 wpa_driver_nl80211_deauthenticate(
2116 drv, params->bssid,
2117 WLAN_REASON_PREV_AUTH_NOT_VALID);
2118 nlmsg_free(msg);
2119 goto retry;
2120 }
c2a04078
JM		 2121 goto nla_put_failure;
2122 }
2123 ret = 0;
2124 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2125 "successfully");
2126
2127nla_put_failure:
2128 nlmsg_free(msg);
2129 return ret;
2130}
2131
2132
282d5590
JM		 2133struct phy_info_arg {
2134 u16 *num_modes;
2135 struct hostapd_hw_modes *modes;
2136};
2137
2138static int phy_info_handler(struct nl_msg *msg, void *arg)
2139{
2140 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2141 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2142 struct phy_info_arg *phy_info = arg;
2143
2144 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2145
2146 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2147 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2148 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2149 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2150 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2151 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2152 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2153 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2154 };
2155
2156 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2157 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2158 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2159 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2160 };
2161
2162 struct nlattr *nl_band;
2163 struct nlattr *nl_freq;
2164 struct nlattr *nl_rate;
2165 int rem_band, rem_freq, rem_rate;
2166 struct hostapd_hw_modes *mode;
2167 int idx, mode_is_set;
2168
2169 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2170 genlmsg_attrlen(gnlh, 0), NULL);
2171
2172 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2173 return NL_SKIP;
2174
2175 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
e62fb0a0 2176 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
282d5590
JM		 2177 if (!mode)
2178 return NL_SKIP;
2179 phy_info->modes = mode;
2180
2181 mode_is_set = 0;
2182
2183 mode = &phy_info->modes[*(phy_info->num_modes)];
2184 memset(mode, 0, sizeof(*mode));
2185 *(phy_info->num_modes) += 1;
2186
2187 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2188 nla_len(nl_band), NULL);
2189
2190 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2191 mode->ht_capab = nla_get_u16(
2192 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2193 }
2194
be8eb8ab
JM		 2195 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2196 mode->a_mpdu_params |= nla_get_u8(
2197 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2198 0x03;
2199 }
2200
2201 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2202 mode->a_mpdu_params |= nla_get_u8(
2203 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2204 2;
2205 }
2206
08eb154d
JM		 2207 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2208 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2209 u8 *mcs;
2210 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2211 os_memcpy(mode->mcs_set, mcs, 16);
2212 }
2213
282d5590
JM		 2214 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2215 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2216 nla_len(nl_freq), freq_policy);
2217 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2218 continue;
2219 mode->num_channels++;
2220 }
2221
e62fb0a0 2222 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
282d5590
JM		 2223 if (!mode->channels)
2224 return NL_SKIP;
2225
2226 idx = 0;
2227
2228 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2229 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2230 nla_len(nl_freq), freq_policy);
2231 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2232 continue;
2233
2234 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2235 mode->channels[idx].flag = 0;
2236
2237 if (!mode_is_set) {
2238 /* crude heuristic */
2239 if (mode->channels[idx].freq < 4000)
2240 mode->mode = HOSTAPD_MODE_IEEE80211B;
2241 else
2242 mode->mode = HOSTAPD_MODE_IEEE80211A;
2243 mode_is_set = 1;
2244 }
2245
2246 /* crude heuristic */
2247 if (mode->channels[idx].freq < 4000)
5a0ffb5f 2248 if (mode->channels[idx].freq == 2484)
282d5590
JM		 2249 mode->channels[idx].chan = 14;
2250 else
2251 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2252 else
2253 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2254
2255 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2256 mode->channels[idx].flag |=
2257 HOSTAPD_CHAN_DISABLED;
2258 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2259 mode->channels[idx].flag |=
2260 HOSTAPD_CHAN_PASSIVE_SCAN;
2261 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2262 mode->channels[idx].flag |=
2263 HOSTAPD_CHAN_NO_IBSS;
2264 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2265 mode->channels[idx].flag |=
2266 HOSTAPD_CHAN_RADAR;
2267
2268 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2269 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2270 mode->channels[idx].max_tx_power =
2271 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2272
2273 idx++;
2274 }
2275
2276 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2277 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2278 nla_len(nl_rate), rate_policy);
2279 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2280 continue;
2281 mode->num_rates++;
2282 }
2283
e62fb0a0 2284 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
282d5590
JM		 2285 if (!mode->rates)
2286 return NL_SKIP;
2287
2288 idx = 0;
2289
2290 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2291 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2292 nla_len(nl_rate), rate_policy);
2293 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2294 continue;
fb7842aa 2295 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
282d5590
JM		 2296
2297 /* crude heuristic */
2298 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
fb7842aa 2299 mode->rates[idx] > 200)
282d5590
JM		 2300 mode->mode = HOSTAPD_MODE_IEEE80211G;
2301
282d5590
JM		 2302 idx++;
2303 }
2304 }
2305
2306 return NL_SKIP;
2307}
2308
2309static struct hostapd_hw_modes *
2310wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2311{
2312 u16 m;
2313 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2314 int i, mode11g_idx = -1;
2315
2316 /* If only 802.11g mode is included, use it to construct matching
2317 * 802.11b mode data. */
2318
2319 for (m = 0; m < *num_modes; m++) {
2320 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2321 return modes; /* 802.11b already included */
2322 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2323 mode11g_idx = m;
2324 }
2325
2326 if (mode11g_idx < 0)
2327 return modes; /* 2.4 GHz band not supported at all */
2328
2329 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2330 if (nmodes == NULL)
2331 return modes; /* Could not add 802.11b mode */
2332
2333 mode = &nmodes[*num_modes];
2334 os_memset(mode, 0, sizeof(*mode));
2335 (*num_modes)++;
2336 modes = nmodes;
2337
2338 mode->mode = HOSTAPD_MODE_IEEE80211B;
2339
2340 mode11g = &modes[mode11g_idx];
2341 mode->num_channels = mode11g->num_channels;
2342 mode->channels = os_malloc(mode11g->num_channels *
2343 sizeof(struct hostapd_channel_data));
2344 if (mode->channels == NULL) {
2345 (*num_modes)--;
2346 return modes; /* Could not add 802.11b mode */
2347 }
2348 os_memcpy(mode->channels, mode11g->channels,
2349 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2350
2351 mode->num_rates = 0;
fb7842aa 2352 mode->rates = os_malloc(4 * sizeof(int));
282d5590
JM		 2353 if (mode->rates == NULL) {
2354 os_free(mode->channels);
2355 (*num_modes)--;
2356 return modes; /* Could not add 802.11b mode */
2357 }
2358
2359 for (i = 0; i < mode11g->num_rates; i++) {
fb7842aa
JM		 2360 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2361 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
282d5590
JM		 2362 continue;
2363 mode->rates[mode->num_rates] = mode11g->rates[i];
2364 mode->num_rates++;
2365 if (mode->num_rates == 4)
2366 break;
2367 }
2368
2369 if (mode->num_rates == 0) {
2370 os_free(mode->channels);
2371 os_free(mode->rates);
2372 (*num_modes)--;
2373 return modes; /* No 802.11b rates */
2374 }
2375
2376 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2377 "information");
2378
2379 return modes;
2380}
2381
2382
2383static struct hostapd_hw_modes *
2384wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2385{
2386 struct wpa_driver_nl80211_data *drv = priv;
2387 struct nl_msg *msg;
2388 struct phy_info_arg result = {
2389 .num_modes = num_modes,
2390 .modes = NULL,
2391 };
2392
2393 *num_modes = 0;
2394 *flags = 0;
2395
2396 msg = nlmsg_alloc();
2397 if (!msg)
2398 return NULL;
2399
2400 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2401 0, NL80211_CMD_GET_WIPHY, 0);
2402
2403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2404
2405 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2406 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2407 nla_put_failure:
2408 return NULL;
2409}
2410
2411
2c2010ac
JM		 2412static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2413 const void *data, size_t len,
2414 int encrypt)
2415{
2416 __u8 rtap_hdr[] = {
2417 0x00, 0x00, /* radiotap version */
2418 0x0e, 0x00, /* radiotap length */
2419 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2420 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2421 0x00, /* padding */
2422 0x00, 0x00, /* RX and TX flags to indicate that */
2423 0x00, 0x00, /* this is the injected frame directly */
2424 };
2425 struct iovec iov[2] = {
2426 {
2427 .iov_base = &rtap_hdr,
2428 .iov_len = sizeof(rtap_hdr),
2429 },
2430 {
2431 .iov_base = (void *) data,
2432 .iov_len = len,
2433 }
2434 };
2435 struct msghdr msg = {
2436 .msg_name = NULL,
2437 .msg_namelen = 0,
2438 .msg_iov = iov,
2439 .msg_iovlen = 2,
2440 .msg_control = NULL,
2441 .msg_controllen = 0,
2442 .msg_flags = 0,
2443 };
2444
2445 if (encrypt)
2446 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2447
2448 return sendmsg(drv->monitor_sock, &msg, 0);
2449}
2450
2451
2452static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2453 size_t data_len)
2454{
2455 struct wpa_driver_nl80211_data *drv = priv;
2456 struct ieee80211_mgmt *mgmt;
7a47d567 2457 int encrypt = 1;
2c2010ac
JM		 2458 u16 fc;
2459
2460 mgmt = (struct ieee80211_mgmt *) data;
2461 fc = le_to_host16(mgmt->frame_control);
2462
2463 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2464 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2465 /*
2466 * Only one of the authentication frame types is encrypted.
2467 * In order for static WEP encryption to work properly (i.e.,
2468 * to not encrypt the frame), we need to tell mac80211 about
2469 * the frames that must not be encrypted.
2470 */
2471 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2472 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
7a47d567
JB		 2473 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2474 encrypt = 0;
2c2010ac
JM		 2475 }
2476
7a47d567 2477 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2c2010ac
JM		 2478}
2479
2480
5d674872
JM		 2481static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2482 const u8 *head, size_t head_len,
2483 const u8 *tail, size_t tail_len,
2484 int dtim_period, int beacon_int)
d2440ba0
JM		 2485{
2486 struct wpa_driver_nl80211_data *drv = priv;
2487 struct nl_msg *msg;
2488 u8 cmd = NL80211_CMD_NEW_BEACON;
2489 int ret;
b4fd6fab 2490 int beacon_set;
5d674872 2491 int ifindex = if_nametoindex(ifname);
b4fd6fab
JM		 2492#ifdef HOSTAPD
2493 struct i802_bss *bss;
2494
2495 bss = get_bss(drv, ifindex);
2496 if (bss == NULL)
2497 return -ENOENT;
2498 beacon_set = bss->beacon_set;
2499#else /* HOSTAPD */
2500 beacon_set = drv->beacon_set;
2501#endif /* HOSTAPD */
d2440ba0
JM		 2502
2503 msg = nlmsg_alloc();
2504 if (!msg)
2505 return -ENOMEM;
2506
2507 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
b4fd6fab
JM		 2508 beacon_set);
2509 if (beacon_set)
d2440ba0
JM		 2510 cmd = NL80211_CMD_SET_BEACON;
2511
2512 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2513 0, cmd, 0);
2514 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2515 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
b4fd6fab 2516 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5d674872 2517 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
d2440ba0
JM		 2518 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2519
2520 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2521 if (ret) {
2522 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2523 ret, strerror(-ret));
b4fd6fab
JM		 2524 } else {
2525#ifdef HOSTAPD
2526 bss->beacon_set = 1;
2527#else /* HOSTAPD */
d2440ba0 2528 drv->beacon_set = 1;
b4fd6fab
JM		 2529#endif /* HOSTAPD */
2530 }
d2440ba0
JM		 2531 return ret;
2532 nla_put_failure:
2533 return -ENOBUFS;
2534}
2535
2536
f019981a
JM		 2537static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2538 int freq, int ht_enabled,
2539 int sec_channel_offset)
1581b38b
JM		 2540{
2541 struct nl_msg *msg;
d2440ba0 2542 int ret;
1581b38b
JM		 2543
2544 msg = nlmsg_alloc();
2545 if (!msg)
2546 return -1;
2547
2548 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2549 NL80211_CMD_SET_WIPHY, 0);
2550
2551 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
f019981a
JM		 2552 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2553 if (ht_enabled) {
2554 switch (sec_channel_offset) {
2555 case -1:
2556 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2557 NL80211_CHAN_HT40MINUS);
2558 break;
2559 case 1:
2560 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2561 NL80211_CHAN_HT40PLUS);
2562 break;
2563 default:
2564 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2565 NL80211_CHAN_HT20);
2566 break;
2567 }
2568 }
1581b38b 2569
d2440ba0
JM		 2570 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2571 if (ret == 0)
1581b38b 2572 return 0;
f019981a
JM		 2573 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2574 "%d (%s)", freq, ret, strerror(-ret));
1581b38b
JM		 2575nla_put_failure:
2576 return -1;
2577}
2578
0f4e8b4f
JM		 2579
2580static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2581 struct hostapd_sta_add_params *params)
2582{
2583 struct wpa_driver_nl80211_data *drv = priv;
2584 struct nl_msg *msg;
2585 int ret = -ENOBUFS;
2586
2587 msg = nlmsg_alloc();
2588 if (!msg)
2589 return -ENOMEM;
2590
2591 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2592 0, NL80211_CMD_NEW_STATION, 0);
2593
2594 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2595 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2596 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2597 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2598 params->supp_rates);
2599 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2600 params->listen_interval);
0f4e8b4f
JM		 2601 if (params->ht_capabilities) {
2602 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
fc4e2d95
JM		 2603 sizeof(*params->ht_capabilities),
2604 params->ht_capabilities);
0f4e8b4f 2605 }
0f4e8b4f
JM		 2606
2607 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2608 if (ret)
2609 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2610 "result: %d (%s)", ret, strerror(-ret));
2611 if (ret == -EEXIST)
2612 ret = 0;
2613 nla_put_failure:
2614 return ret;
2615}
2616
2617
2618static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2619{
2620 struct wpa_driver_nl80211_data *drv = priv;
2621 struct nl_msg *msg;
2622 int ret;
2623
2624 msg = nlmsg_alloc();
2625 if (!msg)
2626 return -ENOMEM;
2627
2628 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2629 0, NL80211_CMD_DEL_STATION, 0);
2630
2631 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2632 if_nametoindex(drv->ifname));
2633 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2634
2635 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2636 if (ret == -ENOENT)
2637 return 0;
2638 return ret;
2639 nla_put_failure:
2640 return -ENOBUFS;
2641}
2642
1581b38b 2643
0915d02c
JM		 2644static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2645 int ifidx)
2646{
2647 struct nl_msg *msg;
2648
c6e8e8e4
JM		 2649 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2650
2135f224
JM		 2651#ifdef HOSTAPD
2652 /* stop listening for EAPOL on this interface */
2653 del_ifidx(drv, ifidx);
2654#endif /* HOSTAPD */
2655
0915d02c
JM		 2656 msg = nlmsg_alloc();
2657 if (!msg)
2658 goto nla_put_failure;
2659
2660 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2661 0, NL80211_CMD_DEL_INTERFACE, 0);
2662 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2663
2664 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2665 return;
2666 nla_put_failure:
e748062b 2667 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
0915d02c
JM		 2668}
2669
2670
a35187e7
KH		 2671static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2672 const char *ifname,
2673 enum nl80211_iftype iftype,
fbbfcbac 2674 const u8 *addr, int wds)
0915d02c
JM		 2675{
2676 struct nl_msg *msg, *flags = NULL;
2677 int ifidx;
2678 int ret = -ENOBUFS;
2679
2680 msg = nlmsg_alloc();
2681 if (!msg)
2682 return -1;
2683
2684 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2685 0, NL80211_CMD_NEW_INTERFACE, 0);
2686 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2687 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2688 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2689
2690 if (iftype == NL80211_IFTYPE_MONITOR) {
2691 int err;
2692
2693 flags = nlmsg_alloc();
2694 if (!flags)
2695 goto nla_put_failure;
2696
2697 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2698
2699 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2700
2701 nlmsg_free(flags);
2702
2703 if (err)
2704 goto nla_put_failure;
fbbfcbac
FF		 2705 } else if (wds) {
2706 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
0915d02c
JM		 2707 }
2708
2709 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2710 if (ret) {
2711 nla_put_failure:
a35187e7
KH		 2712 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2713 ifname, ret, strerror(-ret));
0915d02c
JM		 2714 return ret;
2715 }
2716
2717 ifidx = if_nametoindex(ifname);
c6e8e8e4
JM		 2718 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2719 ifname, ifidx);
0915d02c
JM		 2720
2721 if (ifidx <= 0)
2722 return -1;
2723
2135f224
JM		 2724#ifdef HOSTAPD
2725 /* start listening for EAPOL on this interface */
2726 add_ifidx(drv, ifidx);
7bfc47c3 2727#endif /* HOSTAPD */
2135f224 2728
7bfc47c3 2729 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2ac9688e 2730 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
41d931ee
JM		 2731 nl80211_remove_iface(drv, ifidx);
2732 return -1;
2135f224 2733 }
2135f224 2734
0915d02c
JM		 2735 return ifidx;
2736}
22a7c9d7
JM		 2737
2738
a35187e7
KH		 2739static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2740 const char *ifname, enum nl80211_iftype iftype,
fbbfcbac 2741 const u8 *addr, int wds)
a35187e7
KH		 2742{
2743 int ret;
2744
fbbfcbac 2745 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
a35187e7
KH		 2746
2747 /* if error occured and interface exists already */
2748 if (ret == -ENFILE && if_nametoindex(ifname)) {
2749 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2750
2751 /* Try to remove the interface that was already there. */
2752 nl80211_remove_iface(drv, if_nametoindex(ifname));
2753
2754 /* Try to create the interface again */
fbbfcbac
FF		 2755 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2756 wds);
a35187e7
KH		 2757 }
2758
4e5cb1a3
JM		 2759 if (ret >= 0 && drv->disable_11b_rates)
2760 nl80211_disable_11b_rates(drv, ret, 1);
2761
a35187e7
KH		 2762 return ret;
2763}
0915d02c 2764
2135f224 2765
0915d02c
JM		 2766static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2767{
2768 struct ieee80211_hdr *hdr;
f8b1f695
JM		 2769 u16 fc;
2770 union wpa_event_data event;
0915d02c
JM		 2771
2772 hdr = (struct ieee80211_hdr *) buf;
2773 fc = le_to_host16(hdr->frame_control);
2774
f8b1f695
JM		 2775 os_memset(&event, 0, sizeof(event));
2776 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2777 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2778 event.tx_status.dst = hdr->addr1;
2779 event.tx_status.data = buf;
2780 event.tx_status.data_len = len;
2781 event.tx_status.ack = ok;
2782 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
0915d02c
JM		 2783}
2784
2785
4b9841d3 2786static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
0d9fc3d8 2787 u8 *buf, size_t len)
0915d02c 2788{
f8b1f695
JM		 2789 union wpa_event_data event;
2790 os_memset(&event, 0, sizeof(event));
0d9fc3d8 2791 event.rx_from_unknown.frame = buf;
f8b1f695
JM		 2792 event.rx_from_unknown.len = len;
2793 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4b9841d3 2794}
0915d02c 2795
4b9841d3
JM		 2796
2797static void handle_frame(struct wpa_driver_nl80211_data *drv,
2a8b7416 2798 u8 *buf, size_t len, int datarate, int ssi_signal)
4b9841d3
JM		 2799{
2800 struct ieee80211_hdr *hdr;
f8b1f695
JM		 2801 u16 fc;
2802 union wpa_event_data event;
0915d02c
JM		 2803
2804 hdr = (struct ieee80211_hdr *) buf;
2805 fc = le_to_host16(hdr->frame_control);
0915d02c 2806
4b9841d3 2807 switch (WLAN_FC_GET_TYPE(fc)) {
0915d02c 2808 case WLAN_FC_TYPE_MGMT:
f8b1f695
JM		 2809 os_memset(&event, 0, sizeof(event));
2810 event.rx_mgmt.frame = buf;
2811 event.rx_mgmt.frame_len = len;
2a8b7416
JM		 2812 event.rx_mgmt.datarate = datarate;
2813 event.rx_mgmt.ssi_signal = ssi_signal;
f8b1f695 2814 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
0915d02c
JM		 2815 break;
2816 case WLAN_FC_TYPE_CTRL:
2817 /* can only get here with PS-Poll frames */
2818 wpa_printf(MSG_DEBUG, "CTRL");
0d9fc3d8 2819 from_unknown_sta(drv, buf, len);
0915d02c
JM		 2820 break;
2821 case WLAN_FC_TYPE_DATA:
0d9fc3d8 2822 from_unknown_sta(drv, buf, len);
0915d02c
JM		 2823 break;
2824 }
2825}
2826
2827
2828static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2829{
2830 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2831 int len;
2832 unsigned char buf[3000];
2833 struct ieee80211_radiotap_iterator iter;
2834 int ret;
2a8b7416 2835 int datarate = 0, ssi_signal = 0;
4b9841d3 2836 int injected = 0, failed = 0, rxflags = 0;
0915d02c
JM		 2837
2838 len = recv(sock, buf, sizeof(buf), 0);
2839 if (len < 0) {
2840 perror("recv");
2841 return;
2842 }
2843
504e905c
JM		 2844 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
2845 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
2846 "frame since Probe Request reporting is disabled");
2847 return;
2848 }
2849
0915d02c
JM		 2850 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2851 printf("received invalid radiotap frame\n");
2852 return;
2853 }
2854
0915d02c
JM		 2855 while (1) {
2856 ret = ieee80211_radiotap_iterator_next(&iter);
2857 if (ret == -ENOENT)
2858 break;
2859 if (ret) {
2860 printf("received invalid radiotap frame (%d)\n", ret);
2861 return;
2862 }
2863 switch (iter.this_arg_index) {
2864 case IEEE80211_RADIOTAP_FLAGS:
2865 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2866 len -= 4;
2867 break;
2868 case IEEE80211_RADIOTAP_RX_FLAGS:
2869 rxflags = 1;
2870 break;
2871 case IEEE80211_RADIOTAP_TX_FLAGS:
2872 injected = 1;
2873 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2874 IEEE80211_RADIOTAP_F_TX_FAIL;
2875 break;
2876 case IEEE80211_RADIOTAP_DATA_RETRIES:
2877 break;
2878 case IEEE80211_RADIOTAP_CHANNEL:
2a8b7416 2879 /* TODO: convert from freq/flags to channel number */
0915d02c
JM		 2880 break;
2881 case IEEE80211_RADIOTAP_RATE:
2a8b7416 2882 datarate = *iter.this_arg * 5;
0915d02c
JM		 2883 break;
2884 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2a8b7416 2885 ssi_signal = *iter.this_arg;
0915d02c
JM		 2886 break;
2887 }
2888 }
2889
2890 if (rxflags && injected)
2891 return;
2892
2893 if (!injected)
4b9841d3 2894 handle_frame(drv, buf + iter.max_length,
2a8b7416 2895 len - iter.max_length, datarate, ssi_signal);
0915d02c 2896 else
4b9841d3
JM		 2897 handle_tx_callback(drv->ctx, buf + iter.max_length,
2898 len - iter.max_length, !failed);
0915d02c
JM		 2899}
2900
2901
2902/*
2903 * we post-process the filter code later and rewrite
2904 * this to the offset to the last instruction
2905 */
2906#define PASS 0xFF
2907#define FAIL 0xFE
2908
2909static struct sock_filter msock_filter_insns[] = {
2910 /*
2911 * do a little-endian load of the radiotap length field
2912 */
2913 /* load lower byte into A */
2914 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2915 /* put it into X (== index register) */
2916 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2917 /* load upper byte into A */
2918 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2919 /* left-shift it by 8 */
2920 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2921 /* or with X */
2922 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2923 /* put result into X */
2924 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2925
2926 /*
2927 * Allow management frames through, this also gives us those
2928 * management frames that we sent ourselves with status
2929 */
2930 /* load the lower byte of the IEEE 802.11 frame control field */
2931 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2932 /* mask off frame type and version */
2933 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2934 /* accept frame if it's both 0, fall through otherwise */
2935 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2936
2937 /*
2938 * TODO: add a bit to radiotap RX flags that indicates
2939 * that the sending station is not associated, then
2940 * add a filter here that filters on our DA and that flag
2941 * to allow us to deauth frames to that bad station.
2942 *
2943 * Not a regression -- we didn't do it before either.
2944 */
2945
2946#if 0
2947 /*
fbbfcbac 2948 * drop non-data frames
0915d02c
JM		 2949 */
2950 /* load the lower byte of the frame control field */
2951 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2952 /* mask off QoS bit */
2953 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2954 /* drop non-data frames */
2955 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
fbbfcbac 2956#endif
0915d02c 2957 /* load the upper byte of the frame control field */
fbbfcbac 2958 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
0915d02c
JM		 2959 /* mask off toDS/fromDS */
2960 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
fbbfcbac
FF		 2961 /* accept WDS frames */
2962 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
0915d02c
JM		 2963
2964 /*
2965 * add header length to index
2966 */
2967 /* load the lower byte of the frame control field */
2968 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2969 /* mask off QoS bit */
2970 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2971 /* right shift it by 6 to give 0 or 2 */
2972 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2973 /* add data frame header length */
2974 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2975 /* add index, was start of 802.11 header */
2976 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2977 /* move to index, now start of LL header */
2978 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2979
2980 /*
2981 * Accept empty data frames, we use those for
2982 * polling activity.
2983 */
2984 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2985 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2986
2987 /*
2988 * Accept EAPOL frames
2989 */
2990 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2991 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2992 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2993 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2994
2995 /* keep these last two statements or change the code below */
2996 /* return 0 == "DROP" */
2997 BPF_STMT(BPF_RET | BPF_K, 0),
2998 /* return ~0 == "keep all" */
2999 BPF_STMT(BPF_RET | BPF_K, ~0),
3000};
3001
3002static struct sock_fprog msock_filter = {
3003 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3004 .filter = msock_filter_insns,
3005};
3006
3007
3008static int add_monitor_filter(int s)
3009{
3010 int idx;
3011
3012 /* rewrite all PASS/FAIL jump offsets */
3013 for (idx = 0; idx < msock_filter.len; idx++) {
3014 struct sock_filter *insn = &msock_filter_insns[idx];
3015
3016 if (BPF_CLASS(insn->code) == BPF_JMP) {
3017 if (insn->code == (BPF_JMP|BPF_JA)) {
3018 if (insn->k == PASS)
3019 insn->k = msock_filter.len - idx - 2;
3020 else if (insn->k == FAIL)
3021 insn->k = msock_filter.len - idx - 3;
3022 }
3023
3024 if (insn->jt == PASS)
3025 insn->jt = msock_filter.len - idx - 2;
3026 else if (insn->jt == FAIL)
3027 insn->jt = msock_filter.len - idx - 3;
3028
3029 if (insn->jf == PASS)
3030 insn->jf = msock_filter.len - idx - 2;
3031 else if (insn->jf == FAIL)
3032 insn->jf = msock_filter.len - idx - 3;
3033 }
3034 }
3035
3036 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3037 &msock_filter, sizeof(msock_filter))) {
3038 perror("SO_ATTACH_FILTER");
3039 return -1;
3040 }
3041
3042 return 0;
3043}
3044
3045
460456f8
JM		 3046static void nl80211_remove_monitor_interface(
3047 struct wpa_driver_nl80211_data *drv)
3048{
3049 if (drv->monitor_ifidx >= 0) {
3050 nl80211_remove_iface(drv, drv->monitor_ifidx);
3051 drv->monitor_ifidx = -1;
3052 }
504e905c
JM		 3053 if (drv->monitor_sock >= 0) {
3054 eloop_unregister_read_sock(drv->monitor_sock);
3055 close(drv->monitor_sock);
3056 drv->monitor_sock = -1;
3057 }
460456f8
JM		 3058}
3059
3060
0915d02c
JM		 3061static int
3062nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3063{
3064 char buf[IFNAMSIZ];
3065 struct sockaddr_ll ll;
3066 int optval;
3067 socklen_t optlen;
0915d02c
JM		 3068
3069 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3070 buf[IFNAMSIZ - 1] = '\0';
3071
3072 drv->monitor_ifidx =
fbbfcbac
FF		 3073 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3074 0);
0915d02c
JM		 3075
3076 if (drv->monitor_ifidx < 0)
3077 return -1;
3078
34f2f814 3079 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
0915d02c 3080 goto error;
0915d02c
JM		 3081
3082 memset(&ll, 0, sizeof(ll));
3083 ll.sll_family = AF_PACKET;
3084 ll.sll_ifindex = drv->monitor_ifidx;
3085 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3086 if (drv->monitor_sock < 0) {
3087 perror("socket[PF_PACKET,SOCK_RAW]");
3088 goto error;
3089 }
3090
3091 if (add_monitor_filter(drv->monitor_sock)) {
3092 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3093 "interface; do filtering in user space");
3094 /* This works, but will cost in performance. */
3095 }
3096
2135f224 3097 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
0915d02c
JM		 3098 perror("monitor socket bind");
3099 goto error;
3100 }
3101
3102 optlen = sizeof(optval);
3103 optval = 20;
3104 if (setsockopt
3105 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3106 perror("Failed to set socket priority");
3107 goto error;
3108 }
3109
3110 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3111 drv, NULL)) {
3112 printf("Could not register monitor read socket\n");
3113 goto error;
3114 }
3115
3116 return 0;
3117 error:
460456f8 3118 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 3119 return -1;
3120}
3121
db149ac9
JM		 3122
3123static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3124
3125static int wpa_driver_nl80211_hapd_send_eapol(
3126 void *priv, const u8 *addr, const u8 *data,
3127 size_t data_len, int encrypt, const u8 *own_addr)
3128{
3129 struct wpa_driver_nl80211_data *drv = priv;
3130 struct ieee80211_hdr *hdr;
3131 size_t len;
3132 u8 *pos;
3133 int res;
3134#if 0 /* FIX */
0de39516 3135 int qos = sta->flags & WPA_STA_WMM;
db149ac9
JM		 3136#else
3137 int qos = 0;
3138#endif
3139
3140 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3141 data_len;
3142 hdr = os_zalloc(len);
3143 if (hdr == NULL) {
3144 printf("malloc() failed for i802_send_data(len=%lu)\n",
3145 (unsigned long) len);
3146 return -1;
3147 }
3148
3149 hdr->frame_control =
3150 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3151 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3152 if (encrypt)
3153 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3154#if 0 /* To be enabled if qos determination is added above */
3155 if (qos) {
3156 hdr->frame_control |=
3157 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3158 }
3159#endif
3160
3161 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3162 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3163 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3164 pos = (u8 *) (hdr + 1);
3165
3166#if 0 /* To be enabled if qos determination is added above */
3167 if (qos) {
3168 /* add an empty QoS header if needed */
3169 pos[0] = 0;
3170 pos[1] = 0;
3171 pos += 2;
3172 }
3173#endif
3174
3175 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3176 pos += sizeof(rfc1042_header);
3177 WPA_PUT_BE16(pos, ETH_P_PAE);
3178 pos += 2;
3179 memcpy(pos, data, data_len);
3180
3181 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3182 if (res < 0) {
3183 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3184 "failed: %d (%s)",
3185 (unsigned long) len, errno, strerror(errno));
3186 }
7bf12757 3187 os_free(hdr);
db149ac9
JM		 3188
3189 return res;
3190}
3191
a8d6ffa4 3192
7e76ee9c
JM		 3193static u32 sta_flags_nl80211(int flags)
3194{
3195 u32 f = 0;
3196
0de39516 3197 if (flags & WPA_STA_AUTHORIZED)
7e76ee9c 3198 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
0de39516 3199 if (flags & WPA_STA_WMM)
7e76ee9c 3200 f |= BIT(NL80211_STA_FLAG_WME);
0de39516 3201 if (flags & WPA_STA_SHORT_PREAMBLE)
7e76ee9c 3202 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
0de39516 3203 if (flags & WPA_STA_MFP)
7e76ee9c
JM		 3204 f |= BIT(NL80211_STA_FLAG_MFP);
3205
3206 return f;
3207}
3208
3209
a8d6ffa4
JM		 3210static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3211 int total_flags, int flags_or,
3212 int flags_and)
3213{
3214 struct wpa_driver_nl80211_data *drv = priv;
3215 struct nl_msg *msg, *flags = NULL;
7e76ee9c 3216 struct nl80211_sta_flag_update upd;
a8d6ffa4
JM		 3217
3218 msg = nlmsg_alloc();
3219 if (!msg)
3220 return -ENOMEM;
3221
3222 flags = nlmsg_alloc();
3223 if (!flags) {
3224 nlmsg_free(msg);
3225 return -ENOMEM;
3226 }
3227
3228 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3229 0, NL80211_CMD_SET_STATION, 0);
3230
3231 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3232 if_nametoindex(drv->ifname));
3233 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3234
7e76ee9c
JM		 3235 /*
3236 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3237 * can be removed eventually.
3238 */
0de39516 3239 if (total_flags & WPA_STA_AUTHORIZED)
a8d6ffa4
JM		 3240 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3241
0de39516 3242 if (total_flags & WPA_STA_WMM)
a8d6ffa4
JM		 3243 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3244
0de39516 3245 if (total_flags & WPA_STA_SHORT_PREAMBLE)
a8d6ffa4
JM		 3246 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3247
0de39516 3248 if (total_flags & WPA_STA_MFP)
a8d6ffa4
JM		 3249 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3250
3251 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3252 goto nla_put_failure;
3253
7e76ee9c
JM		 3254 os_memset(&upd, 0, sizeof(upd));
3255 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3256 upd.set = sta_flags_nl80211(flags_or);
3257 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3258
a8d6ffa4
JM		 3259 nlmsg_free(flags);
3260
3261 return send_and_recv_msgs(drv, msg, NULL, NULL);
3262 nla_put_failure:
3263 nlmsg_free(flags);
3264 return -ENOBUFS;
3265}
3266
0915d02c 3267
1581b38b
JM		 3268static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3269 struct wpa_driver_associate_params *params)
3270{
3271 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
f019981a 3272 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
460456f8 3273 nl80211_remove_monitor_interface(drv);
1581b38b 3274 return -1;
0915d02c 3275 }
1581b38b
JM		 3276
3277 /* TODO: setup monitor interface (and add code somewhere to remove this
3278 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
1581b38b
JM		 3279
3280 return 0;
3281}
1581b38b
JM		 3282
3283
5cc4d64b
JM		 3284static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3285{
3286 struct nl_msg *msg;
3287 int ret = -1;
3288
3289 msg = nlmsg_alloc();
3290 if (!msg)
3291 return -1;
3292
3293 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3294 NL80211_CMD_LEAVE_IBSS, 0);
3295 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3296 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3297 msg = NULL;
3298 if (ret) {
3299 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3300 "(%s)", ret, strerror(-ret));
3301 goto nla_put_failure;
3302 }
3303
3304 ret = 0;
3305 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3306
3307nla_put_failure:
3308 nlmsg_free(msg);
3309 return ret;
3310}
3311
3312
3313static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3314 struct wpa_driver_associate_params *params)
3315{
3316 struct nl_msg *msg;
3317 int ret = -1;
3318 int count = 0;
3319
3320 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3321
3322 if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3323 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3324 "IBSS mode");
3325 return -1;
3326 }
3327
3328retry:
3329 msg = nlmsg_alloc();
3330 if (!msg)
3331 return -1;
3332
3333 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3334 NL80211_CMD_JOIN_IBSS, 0);
3335 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3336
3337 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3338 goto nla_put_failure;
3339
3340 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3341 params->ssid, params->ssid_len);
3342 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3343 params->ssid);
3344 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3345 drv->ssid_len = params->ssid_len;
3346
3347 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3348 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3349
3350 ret = nl80211_set_conn_keys(params, msg);
3351 if (ret)
3352 goto nla_put_failure;
3353
a95795ad
JM		 3354 if (params->wpa_ie) {
3355 wpa_hexdump(MSG_DEBUG,
3356 " * Extra IEs for Beacon/Probe Response frames",
3357 params->wpa_ie, params->wpa_ie_len);
3358 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3359 params->wpa_ie);
3360 }
3361
5cc4d64b
JM		 3362 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3363 msg = NULL;
3364 if (ret) {
3365 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3366 ret, strerror(-ret));
3367 count++;
3368 if (ret == -EALREADY && count == 1) {
3369 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3370 "forced leave");
3371 nl80211_leave_ibss(drv);
3372 nlmsg_free(msg);
3373 goto retry;
3374 }
3375
3376 goto nla_put_failure;
3377 }
3378 ret = 0;
3379 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3380
3381nla_put_failure:
3382 nlmsg_free(msg);
3383 return ret;
3384}
3385
3386
cfaab580
ZY		 3387static int wpa_driver_nl80211_connect(
3388 struct wpa_driver_nl80211_data *drv,
3389 struct wpa_driver_associate_params *params)
3390{
3391 struct nl_msg *msg;
3392 enum nl80211_auth_type type;
3393 int ret = 0;
3394
3395 msg = nlmsg_alloc();
3396 if (!msg)
3397 return -1;
3398
3399 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3400 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3401 NL80211_CMD_CONNECT, 0);
3402
3403 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3404 if (params->bssid) {
3405 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3406 MAC2STR(params->bssid));
3407 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3408 }
3409 if (params->freq) {
3410 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3411 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3412 }
3413 if (params->ssid) {
3414 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3415 params->ssid, params->ssid_len);
3416 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3417 params->ssid);
3418 if (params->ssid_len > sizeof(drv->ssid))
3419 goto nla_put_failure;
3420 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3421 drv->ssid_len = params->ssid_len;
3422 }
3423 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3424 if (params->wpa_ie)
3425 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3426 params->wpa_ie);
3427
abd9fafa 3428 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
cfaab580 3429 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 3430 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
cfaab580 3431 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 3432 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
cfaab580 3433 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 3434 else if (params->auth_alg & WPA_AUTH_ALG_FT)
cfaab580
ZY		 3435 type = NL80211_AUTHTYPE_FT;
3436 else
3437 goto nla_put_failure;
3438
3439 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3440 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3441
3442 if (params->wpa_ie && params->wpa_ie_len) {
3443 enum nl80211_wpa_versions ver;
3444
3445 if (params->wpa_ie[0] == WLAN_EID_RSN)
3446 ver = NL80211_WPA_VERSION_2;
3447 else
3448 ver = NL80211_WPA_VERSION_1;
3449
3450 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3451 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3452 }
3453
3454 if (params->pairwise_suite != CIPHER_NONE) {
c1bb3e0a 3455 int cipher;
cfaab580
ZY		 3456
3457 switch (params->pairwise_suite) {
3458 case CIPHER_WEP40:
3459 cipher = WLAN_CIPHER_SUITE_WEP40;
3460 break;
3461 case CIPHER_WEP104:
3462 cipher = WLAN_CIPHER_SUITE_WEP104;
3463 break;
3464 case CIPHER_CCMP:
3465 cipher = WLAN_CIPHER_SUITE_CCMP;
3466 break;
3467 case CIPHER_TKIP:
3468 default:
3469 cipher = WLAN_CIPHER_SUITE_TKIP;
3470 break;
3471 }
3472 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3473 }
3474
3475 if (params->group_suite != CIPHER_NONE) {
c1bb3e0a 3476 int cipher;
cfaab580
ZY		 3477
3478 switch (params->group_suite) {
3479 case CIPHER_WEP40:
3480 cipher = WLAN_CIPHER_SUITE_WEP40;
3481 break;
3482 case CIPHER_WEP104:
3483 cipher = WLAN_CIPHER_SUITE_WEP104;
3484 break;
3485 case CIPHER_CCMP:
3486 cipher = WLAN_CIPHER_SUITE_CCMP;
3487 break;
3488 case CIPHER_TKIP:
3489 default:
3490 cipher = WLAN_CIPHER_SUITE_TKIP;
3491 break;
3492 }
3493 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3494 }
3495
3496 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3497 params->key_mgmt_suite == KEY_MGMT_PSK) {
3498 int mgmt = WLAN_AKM_SUITE_PSK;
3499
3500 switch (params->key_mgmt_suite) {
3501 case KEY_MGMT_802_1X:
3502 mgmt = WLAN_AKM_SUITE_8021X;
3503 break;
3504 case KEY_MGMT_PSK:
3505 default:
3506 mgmt = WLAN_AKM_SUITE_PSK;
3507 break;
3508 }
3509 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3510 }
3511
3512 ret = nl80211_set_conn_keys(params, msg);
3513 if (ret)
3514 goto nla_put_failure;
3515
3516 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3517 msg = NULL;
3518 if (ret) {
3519 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3520 "(%s)", ret, strerror(-ret));
3521 goto nla_put_failure;
3522 }
3523 ret = 0;
3524 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3525
3526nla_put_failure:
3527 nlmsg_free(msg);
3528 return ret;
3529
3530}
3531
3532
c2a04078
JM		 3533static int wpa_driver_nl80211_associate(
3534 void *priv, struct wpa_driver_associate_params *params)
3535{
3536 struct wpa_driver_nl80211_data *drv = priv;
3537 int ret = -1;
3538 struct nl_msg *msg;
3539
5cc4d64b 3540 if (params->mode == IEEE80211_MODE_AP)
1581b38b 3541 return wpa_driver_nl80211_ap(drv, params);
1581b38b 3542
5cc4d64b
JM		 3543 if (params->mode == IEEE80211_MODE_IBSS)
3544 return wpa_driver_nl80211_ibss(drv, params);
3545
4a867032
JM		 3546 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3547 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3548 return -1;
cfaab580 3549 return wpa_driver_nl80211_connect(drv, params);
4a867032 3550 }
cfaab580 3551
c2a04078
JM		 3552 drv->associated = 0;
3553
3554 msg = nlmsg_alloc();
3555 if (!msg)
3556 return -1;
3557
3558 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3559 drv->ifindex);
3560 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3561 NL80211_CMD_ASSOCIATE, 0);
3562
3563 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3564 if (params->bssid) {
3565 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3566 MAC2STR(params->bssid));
3567 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3568 }
3569 if (params->freq) {
3570 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3571 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4832ecd7
JM		 3572 drv->assoc_freq = params->freq;
3573 } else
3574 drv->assoc_freq = 0;
c2a04078
JM		 3575 if (params->ssid) {
3576 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3577 params->ssid, params->ssid_len);
3578 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3579 params->ssid);
fd05d64e
JM		 3580 if (params->ssid_len > sizeof(drv->ssid))
3581 goto nla_put_failure;
3582 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3583 drv->ssid_len = params->ssid_len;
c2a04078
JM		 3584 }
3585 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3586 if (params->wpa_ie)
3587 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3588 params->wpa_ie);
3589
e572fa33
JM		 3590#ifdef CONFIG_IEEE80211W
3591 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3592 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3593#endif /* CONFIG_IEEE80211W */
3594
01652550
JM		 3595 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3596
62fa124c
JM		 3597 if (params->prev_bssid) {
3598 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3599 MAC2STR(params->prev_bssid));
3600 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3601 params->prev_bssid);
3602 }
3603
c2a04078
JM		 3604 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3605 msg = NULL;
3606 if (ret) {
3607 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3608 "(%s)", ret, strerror(-ret));
8856462d 3609 nl80211_dump_scan(drv);
c2a04078
JM		 3610 goto nla_put_failure;
3611 }
3612 ret = 0;
3613 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3614 "successfully");
3615
3616nla_put_failure:
3617 nlmsg_free(msg);
3618 return ret;
3619}
3f5285e8
JM		 3620
3621
ad1e68e6
JM		 3622static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3623 int ifindex, int mode)
3f5285e8 3624{
3f5285e8 3625 struct nl_msg *msg;
ad1e68e6
JM		 3626 int ret = -ENOBUFS;
3627
3628 msg = nlmsg_alloc();
3629 if (!msg)
3630 return -ENOMEM;
3631
3632 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3633 0, NL80211_CMD_SET_INTERFACE, 0);
3634 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3635 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3636
3637 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3638 if (!ret)
3639 return 0;
3640nla_put_failure:
3641 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3642 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3643 return ret;
3644}
3645
3646
3647static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3648{
3649 struct wpa_driver_nl80211_data *drv = priv;
3650 int ret = -1;
1581b38b
JM		 3651 int nlmode;
3652
3653 switch (mode) {
3654 case 0:
3655 nlmode = NL80211_IFTYPE_STATION;
3656 break;
3657 case 1:
3658 nlmode = NL80211_IFTYPE_ADHOC;
3659 break;
3660 case 2:
3661 nlmode = NL80211_IFTYPE_AP;
3662 break;
3663 default:
3664 return -1;
3665 }
3f5285e8 3666
ad1e68e6
JM		 3667 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3668 drv->nlmode = nlmode;
460456f8
JM		 3669 ret = 0;
3670 goto done;
ad1e68e6 3671 }
3f5285e8 3672
460456f8 3673 if (nlmode == drv->nlmode) {
c6e8e8e4
JM		 3674 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3675 "requested mode - ignore error");
460456f8
JM		 3676 ret = 0;
3677 goto done; /* Already in the requested mode */
3678 }
3f5285e8 3679
3f5285e8
JM		 3680 /* mac80211 doesn't allow mode changes while the device is up, so
3681 * take the device down, try to set the mode again, and bring the
3682 * device back up.
3683 */
34f2f814 3684 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0) == 0) {
3f5285e8 3685 /* Try to set the mode again while the interface is down */
ad1e68e6 3686 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
34f2f814 3687 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1))
2135f224 3688 ret = -1;
3f5285e8
JM		 3689 }
3690
c6e8e8e4
JM		 3691 if (!ret) {
3692 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3693 "interface is down");
ad1e68e6 3694 drv->nlmode = nlmode;
c6e8e8e4 3695 }
ad1e68e6 3696
460456f8 3697done:
460456f8
JM		 3698 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3699 /* Setup additional AP mode functionality if needed */
3700 if (drv->monitor_ifidx < 0 &&
3701 nl80211_create_monitor_interface(drv))
3702 return -1;
3703 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3704 /* Remove additional AP mode functionality */
3705 nl80211_remove_monitor_interface(drv);
af473088
JM		 3706#ifndef HOSTAPD
3707 drv->beacon_set = 0;
3708#endif /* HOSTAPD */
460456f8 3709 }
460456f8 3710
c6e8e8e4
JM		 3711 if (ret)
3712 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3713 "from %d failed", nlmode, drv->nlmode);
3714
3f5285e8
JM		 3715 return ret;
3716}
3717
3718
3f5285e8
JM		 3719static int wpa_driver_nl80211_get_capa(void *priv,
3720 struct wpa_driver_capa *capa)
3721{
3722 struct wpa_driver_nl80211_data *drv = priv;
3723 if (!drv->has_capability)
3724 return -1;
3725 os_memcpy(capa, &drv->capa, sizeof(*capa));
3726 return 0;
3727}
3728
3729
3730static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3731{
3732 struct wpa_driver_nl80211_data *drv = priv;
3733
3734 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3735 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3736 drv->operstate = state;
08063178 3737 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
e2d02c29 3738 state ? IF_OPER_UP : IF_OPER_DORMANT);
3f5285e8
JM		 3739}
3740
01652550
JM		 3741
3742static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3743{
3744 struct wpa_driver_nl80211_data *drv = priv;
3745 struct nl_msg *msg;
3746 struct nl80211_sta_flag_update upd;
3747
3748 msg = nlmsg_alloc();
3749 if (!msg)
3750 return -ENOMEM;
3751
3752 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3753 0, NL80211_CMD_SET_STATION, 0);
3754
3755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3756 if_nametoindex(drv->ifname));
3757 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3758
3759 os_memset(&upd, 0, sizeof(upd));
3760 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3761 if (authorized)
3762 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3763 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3764
3765 return send_and_recv_msgs(drv, msg, NULL, NULL);
3766 nla_put_failure:
3767 return -ENOBUFS;
3768}
3769
3f5285e8 3770
c5121837
JM		 3771#ifdef HOSTAPD
3772
c5121837 3773static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
b4fd6fab 3774 int ifindex)
c5121837
JM		 3775{
3776 struct i802_bss *bss = &drv->bss;
3777 while (bss) {
b4fd6fab 3778 if (ifindex == bss->ifindex)
c5121837
JM		 3779 return bss;
3780 bss = bss->next;
3781 }
b4fd6fab 3782 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
c5121837
JM		 3783 return NULL;
3784}
3785
3786
3787static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3788{
3789 int i;
3790 int *old;
3791
3792 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3793 ifidx);
3794 for (i = 0; i < drv->num_if_indices; i++) {
3795 if (drv->if_indices[i] == 0) {
3796 drv->if_indices[i] = ifidx;
3797 return;
3798 }
3799 }
3800
3801 if (drv->if_indices != drv->default_if_indices)
3802 old = drv->if_indices;
3803 else
3804 old = NULL;
3805
7bf12757
JM		 3806 drv->if_indices = os_realloc(old,
3807 sizeof(int) * (drv->num_if_indices + 1));
c5121837
JM		 3808 if (!drv->if_indices) {
3809 if (!old)
3810 drv->if_indices = drv->default_if_indices;
3811 else
3812 drv->if_indices = old;
3813 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3814 "interfaces");
3815 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3816 return;
3817 }
3818 drv->if_indices[drv->num_if_indices] = ifidx;
3819 drv->num_if_indices++;
3820}
3821
3822
3823static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3824{
3825 int i;
3826
3827 for (i = 0; i < drv->num_if_indices; i++) {
3828 if (drv->if_indices[i] == ifidx) {
3829 drv->if_indices[i] = 0;
3830 break;
3831 }
3832 }
3833}
3834
3835
3836static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3837{
3838 int i;
3839
3840 for (i = 0; i < drv->num_if_indices; i++)
3841 if (drv->if_indices[i] == ifidx)
3842 return 1;
3843
3844 return 0;
3845}
3846
3847
c5121837
JM		 3848static inline int min_int(int a, int b)
3849{
3850 if (a < b)
3851 return a;
3852 return b;
3853}
3854
3855
3856static int get_key_handler(struct nl_msg *msg, void *arg)
3857{
3858 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3859 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3860
3861 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3862 genlmsg_attrlen(gnlh, 0), NULL);
3863
3864 /*
3865 * TODO: validate the key index and mac address!
3866 * Otherwise, there's a race condition as soon as
3867 * the kernel starts sending key notifications.
3868 */
3869
3870 if (tb[NL80211_ATTR_KEY_SEQ])
3871 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3872 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3873 return NL_SKIP;
3874}
3875
3876
3877static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3878 int idx, u8 *seq)
3879{
3880 struct wpa_driver_nl80211_data *drv = priv;
3881 struct nl_msg *msg;
3882
3883 msg = nlmsg_alloc();
3884 if (!msg)
3885 return -ENOMEM;
3886
3887 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3888 0, NL80211_CMD_GET_KEY, 0);
3889
3890 if (addr)
3891 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3892 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3893 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3894
3895 memset(seq, 0, 6);
3896
3897 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3898 nla_put_failure:
3899 return -ENOBUFS;
3900}
3901
3902
3903static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3904 int mode)
3905{
3906 struct wpa_driver_nl80211_data *drv = priv;
3907 struct nl_msg *msg;
3908 u8 rates[NL80211_MAX_SUPP_RATES];
3909 u8 rates_len = 0;
3910 int i;
3911
3912 msg = nlmsg_alloc();
3913 if (!msg)
3914 return -ENOMEM;
3915
3916 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3917 NL80211_CMD_SET_BSS, 0);
3918
3919 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3920 rates[rates_len++] = basic_rates[i] / 5;
3921
3922 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3923
3924 /* TODO: multi-BSS support */
3925 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3926
3927 return send_and_recv_msgs(drv, msg, NULL, NULL);
3928 nla_put_failure:
3929 return -ENOBUFS;
3930}
3931
3932
c5121837
JM		 3933/* Set kernel driver on given frequency (MHz) */
3934static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3935{
3936 struct wpa_driver_nl80211_data *drv = priv;
f019981a
JM		 3937 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3938 freq->sec_channel_offset);
c5121837
JM		 3939}
3940
3941
3942static int i802_set_rts(void *priv, int rts)
3943{
3944 struct wpa_driver_nl80211_data *drv = priv;
ad649451
JM		 3945 struct nl_msg *msg;
3946 int ret = -ENOBUFS;
3947 u32 val;
c5121837 3948
ad649451
JM		 3949 msg = nlmsg_alloc();
3950 if (!msg)
3951 return -ENOMEM;
c5121837 3952
ad649451
JM		 3953 if (rts >= 2347)
3954 val = (u32) -1;
3955 else
3956 val = rts;
c5121837 3957
ad649451
JM		 3958 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3959 0, NL80211_CMD_SET_WIPHY, 0);
3960 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3961 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3962
3963 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3964 if (!ret)
3965 return 0;
3966nla_put_failure:
3967 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3968 "%d (%s)", rts, ret, strerror(-ret));
3969 return ret;
c5121837
JM		 3970}
3971
3972
3973static int i802_set_frag(void *priv, int frag)
3974{
3975 struct wpa_driver_nl80211_data *drv = priv;
ad649451
JM		 3976 struct nl_msg *msg;
3977 int ret = -ENOBUFS;
3978 u32 val;
c5121837 3979
ad649451
JM		 3980 msg = nlmsg_alloc();
3981 if (!msg)
3982 return -ENOMEM;
c5121837 3983
ad649451
JM		 3984 if (frag >= 2346)
3985 val = (u32) -1;
3986 else
3987 val = frag;
c5121837 3988
ad649451
JM		 3989 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3990 0, NL80211_CMD_SET_WIPHY, 0);
3991 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3992 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3993
3994 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3995 if (!ret)
3996 return 0;
3997nla_put_failure:
3998 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3999 "%d: %d (%s)", frag, ret, strerror(-ret));
4000 return ret;
c5121837
JM		 4001}
4002
4003
c5121837
JM		 4004static int i802_flush(void *priv)
4005{
4006 struct wpa_driver_nl80211_data *drv = priv;
4007 struct nl_msg *msg;
4008
4009 msg = nlmsg_alloc();
4010 if (!msg)
4011 return -1;
4012
4013 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4014 0, NL80211_CMD_DEL_STATION, 0);
4015
4016 /*
4017 * XXX: FIX! this needs to flush all VLANs too
4018 */
4019 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4020 if_nametoindex(drv->ifname));
4021
4022 return send_and_recv_msgs(drv, msg, NULL, NULL);
4023 nla_put_failure:
4024 return -ENOBUFS;
4025}
4026
4027
4028static int get_sta_handler(struct nl_msg *msg, void *arg)
4029{
4030 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4031 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4032 struct hostap_sta_driver_data *data = arg;
4033 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4034 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4035 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4036 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4037 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4038 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4039 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4040 };
4041
4042 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4043 genlmsg_attrlen(gnlh, 0), NULL);
4044
4045 /*
4046 * TODO: validate the interface and mac address!
4047 * Otherwise, there's a race condition as soon as
4048 * the kernel starts sending station notifications.
4049 */
4050
4051 if (!tb[NL80211_ATTR_STA_INFO]) {
4052 wpa_printf(MSG_DEBUG, "sta stats missing!");
4053 return NL_SKIP;
4054 }
4055 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4056 tb[NL80211_ATTR_STA_INFO],
4057 stats_policy)) {
4058 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4059 return NL_SKIP;
4060 }
4061
4062 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4063 data->inactive_msec =
4064 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4065 if (stats[NL80211_STA_INFO_RX_BYTES])
4066 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4067 if (stats[NL80211_STA_INFO_TX_BYTES])
4068 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4069 if (stats[NL80211_STA_INFO_RX_PACKETS])
4070 data->rx_packets =
4071 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4072 if (stats[NL80211_STA_INFO_TX_PACKETS])
4073 data->tx_packets =
4074 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4075
4076 return NL_SKIP;
4077}
4078
4079static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4080 const u8 *addr)
4081{
4082 struct wpa_driver_nl80211_data *drv = priv;
4083 struct nl_msg *msg;
4084
4085 os_memset(data, 0, sizeof(*data));
4086 msg = nlmsg_alloc();
4087 if (!msg)
4088 return -ENOMEM;
4089
4090 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4091 0, NL80211_CMD_GET_STATION, 0);
4092
4093 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4094 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4095
4096 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4097 nla_put_failure:
4098 return -ENOBUFS;
4099}
4100
4101
c5121837
JM		 4102static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4103 int cw_min, int cw_max, int burst_time)
4104{
4105 struct wpa_driver_nl80211_data *drv = priv;
4106 struct nl_msg *msg;
4107 struct nlattr *txq, *params;
4108
4109 msg = nlmsg_alloc();
4110 if (!msg)
4111 return -1;
4112
4113 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4114 0, NL80211_CMD_SET_WIPHY, 0);
4115
4116 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4117
4118 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4119 if (!txq)
4120 goto nla_put_failure;
4121
4122 /* We are only sending parameters for a single TXQ at a time */
4123 params = nla_nest_start(msg, 1);
4124 if (!params)
4125 goto nla_put_failure;
4126
4127 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4128 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4129 * 32 usec, so need to convert the value here. */
4130 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4131 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4132 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4133 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4134
4135 nla_nest_end(msg, params);
4136
4137 nla_nest_end(msg, txq);
4138
4139 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4140 return 0;
4141 nla_put_failure:
4142 return -1;
4143}
4144
4145
c5121837
JM		 4146static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4147{
4148 struct wpa_driver_nl80211_data *drv = priv;
4149 struct nl_msg *msg;
4150
4151 msg = nlmsg_alloc();
4152 if (!msg)
4153 return -ENOMEM;
4154
4155 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4156 NL80211_CMD_SET_BSS, 0);
4157
4158 if (cts >= 0)
4159 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4160 if (preamble >= 0)
4161 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4162 if (slot >= 0)
4163 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4164
4165 /* TODO: multi-BSS support */
4166 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4167
4168 return send_and_recv_msgs(drv, msg, NULL, NULL);
4169 nla_put_failure:
4170 return -ENOBUFS;
4171}
4172
4173
4174static int i802_set_cts_protect(void *priv, int value)
4175{
4176 return i802_set_bss(priv, value, -1, -1);
4177}
4178
4179
4180static int i802_set_preamble(void *priv, int value)
4181{
4182 return i802_set_bss(priv, -1, value, -1);
4183}
4184
4185
4186static int i802_set_short_slot_time(void *priv, int value)
4187{
4188 return i802_set_bss(priv, -1, -1, value);
4189}
4190
4191
c5121837
JM		 4192static int i802_set_sta_vlan(void *priv, const u8 *addr,
4193 const char *ifname, int vlan_id)
4194{
4195 struct wpa_driver_nl80211_data *drv = priv;
4196 struct nl_msg *msg;
4197
4198 msg = nlmsg_alloc();
4199 if (!msg)
4200 return -ENOMEM;
4201
4202 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4203 0, NL80211_CMD_SET_STATION, 0);
4204
4205 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4206 if_nametoindex(drv->ifname));
4207 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1c766b09 4208 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
c5121837
JM		 4209 if_nametoindex(ifname));
4210
4211 return send_and_recv_msgs(drv, msg, NULL, NULL);
4212 nla_put_failure:
4213 return -ENOBUFS;
4214}
4215
4216
fbbfcbac
FF		 4217static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4218{
4219 struct wpa_driver_nl80211_data *drv = priv;
e748062b 4220 char name[IFNAMSIZ + 1];
fbbfcbac
FF		 4221
4222 os_snprintf(name, sizeof(name), "%s.sta%d", drv->ifname, aid);
e748062b
JM		 4223 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4224 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
fbbfcbac
FF		 4225 if (val) {
4226 if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN,
4227 NULL, 1) < 0)
4228 return -1;
34f2f814 4229 linux_set_iface_flags(drv->ioctl_sock, name, 1);
fbbfcbac
FF		 4230 return i802_set_sta_vlan(priv, addr, name, 0);
4231 } else {
4232 i802_set_sta_vlan(priv, addr, drv->ifname, 0);
4233 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4234 name);
4235 }
4236}
4237
4238
c5121837
JM		 4239static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4240{
4241 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4242 struct sockaddr_ll lladdr;
4243 unsigned char buf[3000];
4244 int len;
4245 socklen_t fromlen = sizeof(lladdr);
4246
4247 len = recvfrom(sock, buf, sizeof(buf), 0,
4248 (struct sockaddr *)&lladdr, &fromlen);
4249 if (len < 0) {
4250 perror("recv");
4251 return;
4252 }
4253
baac6490
JM		 4254 if (have_ifidx(drv, lladdr.sll_ifindex))
4255 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
c5121837
JM		 4256}
4257
4258
c5121837
JM		 4259static int i802_get_inact_sec(void *priv, const u8 *addr)
4260{
4261 struct hostap_sta_driver_data data;
4262 int ret;
4263
4264 data.inactive_msec = (unsigned long) -1;
4265 ret = i802_read_sta_data(priv, &data, addr);
4266 if (ret || data.inactive_msec == (unsigned long) -1)
4267 return -1;
4268 return data.inactive_msec / 1000;
4269}
4270
4271
4272static int i802_sta_clear_stats(void *priv, const u8 *addr)
4273{
4274#if 0
4275 /* TODO */
4276#endif
4277 return 0;
4278}
4279
4280
731723a5
JM		 4281static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4282 int reason)
c5121837
JM		 4283{
4284 struct wpa_driver_nl80211_data *drv = priv;
4285 struct ieee80211_mgmt mgmt;
4286
4287 memset(&mgmt, 0, sizeof(mgmt));
4288 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4289 WLAN_FC_STYPE_DEAUTH);
4290 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4291 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4292 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4293 mgmt.u.deauth.reason_code = host_to_le16(reason);
9f324b61
JM		 4294 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4295 IEEE80211_HDRLEN +
4296 sizeof(mgmt.u.deauth));
c5121837
JM		 4297}
4298
4299
731723a5
JM		 4300static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4301 int reason)
c5121837
JM		 4302{
4303 struct wpa_driver_nl80211_data *drv = priv;
4304 struct ieee80211_mgmt mgmt;
4305
4306 memset(&mgmt, 0, sizeof(mgmt));
4307 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4308 WLAN_FC_STYPE_DISASSOC);
4309 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4310 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4311 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4312 mgmt.u.disassoc.reason_code = host_to_le16(reason);
9f324b61
JM		 4313 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4314 IEEE80211_HDRLEN +
4315 sizeof(mgmt.u.disassoc));
c5121837
JM		 4316}
4317
4318
94627f6c
JM		 4319static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4320 const char *brname, const char *ifname)
4321{
4322 int ifindex;
4323 char in_br[IFNAMSIZ];
4324
4325 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4326 ifindex = if_nametoindex(brname);
4327 if (ifindex == 0) {
4328 /*
4329 * Bridge was configured, but the bridge device does
4330 * not exist. Try to add it now.
4331 */
4332 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4333 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4334 "bridge interface %s: %s",
4335 brname, strerror(errno));
4336 return -1;
4337 }
4338 drv->added_bridge = 1;
4339 add_ifidx(drv, if_nametoindex(brname));
4340 }
4341
4342 if (linux_br_get(in_br, ifname) == 0) {
4343 if (os_strcmp(in_br, brname) == 0)
4344 return 0; /* already in the bridge */
4345
4346 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4347 "bridge %s", ifname, in_br);
4348 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4349 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4350 "remove interface %s from bridge "
4351 "%s: %s",
4352 ifname, brname, strerror(errno));
4353 return -1;
4354 }
4355 }
4356
4357 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4358 ifname, brname);
4359 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4360 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4361 "into bridge %s: %s",
4362 ifname, brname, strerror(errno));
4363 return -1;
4364 }
4365 drv->added_if_into_bridge = 1;
4366
4367 return 0;
4368}
4369
4370
92f475b4
JM		 4371static void *i802_init(struct hostapd_data *hapd,
4372 struct wpa_init_params *params)
c5121837
JM		 4373{
4374 struct wpa_driver_nl80211_data *drv;
4375 size_t i;
94627f6c
JM		 4376 char brname[IFNAMSIZ];
4377 int ifindex, br_ifindex;
4378 int br_added = 0;
c5121837 4379
bbaf0837
JM		 4380 drv = wpa_driver_nl80211_init(hapd, params->ifname);
4381 if (drv == NULL)
c5121837 4382 return NULL;
c5121837 4383
b4fd6fab 4384 drv->bss.ifindex = drv->ifindex;
c5121837 4385
94627f6c
JM		 4386 if (linux_br_get(brname, params->ifname) == 0) {
4387 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4388 params->ifname, brname);
4389 br_ifindex = if_nametoindex(brname);
4390 } else {
4391 brname[0] = '\0';
4392 br_ifindex = 0;
4393 }
4394
c5121837
JM		 4395 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4396 drv->if_indices = drv->default_if_indices;
92f475b4 4397 for (i = 0; i < params->num_bridge; i++) {
94627f6c
JM		 4398 if (params->bridge[i]) {
4399 ifindex = if_nametoindex(params->bridge[i]);
4400 if (ifindex)
4401 add_ifidx(drv, ifindex);
4402 if (ifindex == br_ifindex)
4403 br_added = 1;
4404 }
c5121837 4405 }
94627f6c
JM		 4406 if (!br_added && br_ifindex &&
4407 (params->num_bridge == 0 || !params->bridge[0]))
4408 add_ifidx(drv, br_ifindex);
c5121837 4409
ad1e68e6
JM		 4410 /* start listening for EAPOL on the default AP interface */
4411 add_ifidx(drv, drv->ifindex);
4412
34f2f814 4413 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 0))
6980c191 4414 goto failed;
ad1e68e6 4415
6980c191 4416 if (params->bssid) {
3adca61c 4417 if (linux_set_ifhwaddr(drv->ioctl_sock, drv->ifname,
2ac9688e 4418 params->bssid))
460456f8
JM		 4419 goto failed;
4420 }
ad1e68e6 4421
4a867032 4422 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
ad1e68e6
JM		 4423 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4424 "into AP mode", drv->ifname);
bbaf0837 4425 goto failed;
ad1e68e6
JM		 4426 }
4427
94627f6c
JM		 4428 if (params->num_bridge && params->bridge[0] &&
4429 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4430 goto failed;
4431
34f2f814 4432 if (linux_set_iface_flags(drv->ioctl_sock, drv->ifname, 1))
bbaf0837 4433 goto failed;
ad1e68e6
JM		 4434
4435 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4436 if (drv->eapol_sock < 0) {
4437 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
bbaf0837 4438 goto failed;
ad1e68e6
JM		 4439 }
4440
4441 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4442 {
4443 printf("Could not register read socket for eapol\n");
c5121837 4444 goto failed;
ad1e68e6
JM		 4445 }
4446
2ac9688e 4447 if (linux_get_ifhwaddr(drv->ioctl_sock, drv->ifname, params->own_addr))
bbaf0837 4448 goto failed;
c5121837 4449
c5121837
JM		 4450 return drv;
4451
4452failed:
460456f8 4453 nl80211_remove_monitor_interface(drv);
c5121837
JM		 4454 if (drv->ioctl_sock >= 0)
4455 close(drv->ioctl_sock);
c5121837
JM		 4456
4457 genl_family_put(drv->nl80211);
4458 nl_cache_free(drv->nl_cache);
4459 nl_handle_destroy(drv->nl_handle);
4460 nl_cb_put(drv->nl_cb);
4461
bbaf0837
JM		 4462 os_free(drv);
4463 return NULL;
4464}
c5121837 4465
c5121837 4466
bbaf0837
JM		 4467static void i802_deinit(void *priv)
4468{
4469 wpa_driver_nl80211_deinit(priv);
c5121837
JM		 4470}
4471
4472#endif /* HOSTAPD */
4473
4474
22a7c9d7
JM		 4475static enum nl80211_iftype wpa_driver_nl80211_if_type(
4476 enum wpa_driver_if_type type)
4477{
4478 switch (type) {
4479 case WPA_IF_STATION:
4480 return NL80211_IFTYPE_STATION;
4481 case WPA_IF_AP_VLAN:
4482 return NL80211_IFTYPE_AP_VLAN;
4483 case WPA_IF_AP_BSS:
4484 return NL80211_IFTYPE_AP;
4485 }
4486 return -1;
4487}
4488
4489
4490static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4491 enum wpa_driver_if_type type,
8043e725
JM		 4492 const char *ifname, const u8 *addr,
4493 void *bss_ctx)
22a7c9d7
JM		 4494{
4495 struct wpa_driver_nl80211_data *drv = priv;
4496 int ifidx;
4497#ifdef HOSTAPD
4498 struct i802_bss *bss = NULL;
4499
4500 if (type == WPA_IF_AP_BSS) {
4501 bss = os_zalloc(sizeof(*bss));
4502 if (bss == NULL)
4503 return -1;
4504 }
4505#endif /* HOSTAPD */
4506
4507 ifidx = nl80211_create_iface(drv, ifname,
fbbfcbac
FF		 4508 wpa_driver_nl80211_if_type(type), addr,
4509 0);
22a7c9d7
JM		 4510 if (ifidx < 0) {
4511#ifdef HOSTAPD
4512 os_free(bss);
4513#endif /* HOSTAPD */
4514 return -1;
4515 }
4516
4517#ifdef HOSTAPD
4518 if (type == WPA_IF_AP_BSS) {
34f2f814
JM		 4519 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4520 nl80211_remove_iface(drv, ifidx);
22a7c9d7
JM		 4521 os_free(bss);
4522 return -1;
4523 }
4524 bss->ifindex = ifidx;
4525 bss->next = drv->bss.next;
4526 drv->bss.next = bss;
4527 }
4528#endif /* HOSTAPD */
4529
4530 return 0;
4531}
4532
4533
4534static int wpa_driver_nl80211_if_remove(void *priv,
4535 enum wpa_driver_if_type type,
4536 const char *ifname)
4537{
4538 struct wpa_driver_nl80211_data *drv = priv;
4539 int ifindex = if_nametoindex(ifname);
4540
e748062b
JM		 4541 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4542 __func__, type, ifname, ifindex);
4543 if (ifindex <= 0)
4544 return -1;
22a7c9d7
JM		 4545 nl80211_remove_iface(drv, ifindex);
4546
4547#ifdef HOSTAPD
4548 if (type == WPA_IF_AP_BSS) {
4549 struct i802_bss *bss, *prev;
4550 prev = &drv->bss;
4551 bss = drv->bss.next;
4552 while (bss) {
4553 if (ifindex == bss->ifindex) {
4554 prev->next = bss->next;
4555 os_free(bss);
4556 break;
4557 }
4558 prev = bss;
4559 bss = bss->next;
4560 }
4561 }
4562#endif /* HOSTAPD */
4563
4564 return 0;
4565}
4566
4567
55777702
JM		 4568static int cookie_handler(struct nl_msg *msg, void *arg)
4569{
4570 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4571 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4572 u64 *cookie = arg;
4573 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4574 genlmsg_attrlen(gnlh, 0), NULL);
4575 if (tb[NL80211_ATTR_COOKIE])
4576 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4577 return NL_SKIP;
4578}
4579
4580
4581static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4582 unsigned int duration)
4583{
4584 struct wpa_driver_nl80211_data *drv = priv;
4585 struct nl_msg *msg;
4586 int ret;
4587 u64 cookie;
4588
4589 msg = nlmsg_alloc();
4590 if (!msg)
4591 return -1;
4592
4593 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4594 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4595
4596 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4597 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4598 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4599
4600 cookie = 0;
4601 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4602 if (ret == 0) {
4603 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4604 "0x%llx for freq=%u MHz duration=%u",
4605 (long long unsigned int) cookie, freq, duration);
4606 drv->remain_on_chan_cookie = cookie;
4607 return 0;
4608 }
4609 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4610 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4611nla_put_failure:
4612 return -1;
4613}
4614
4615
4616static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4617{
4618 struct wpa_driver_nl80211_data *drv = priv;
4619 struct nl_msg *msg;
4620 int ret;
4621
4622 if (!drv->pending_remain_on_chan) {
4623 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4624 "to cancel");
4625 return -1;
4626 }
4627
4628 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4629 "0x%llx",
4630 (long long unsigned int) drv->remain_on_chan_cookie);
4631
4632 msg = nlmsg_alloc();
4633 if (!msg)
4634 return -1;
4635
4636 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4637 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4638
4639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4640 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4641
4642 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4643 if (ret == 0)
4644 return 0;
4645 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4646 "%d (%s)", ret, strerror(-ret));
4647nla_put_failure:
4648 return -1;
4649}
4650
4651
504e905c
JM		 4652static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4653 void *timeout_ctx)
4654{
4655 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4656 if (drv->monitor_ifidx < 0)
4657 return; /* monitor interface already removed */
4658
4659 if (drv->nlmode != NL80211_IFTYPE_STATION)
4660 return; /* not in station mode anymore */
4661
4662 if (drv->probe_req_report)
4663 return; /* reporting enabled */
4664
4665 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4666 "Probe Request reporting needed anymore");
4667 nl80211_remove_monitor_interface(drv);
4668}
4669
4670
4671static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4672{
4673 struct wpa_driver_nl80211_data *drv = priv;
4674
4675 if (drv->nlmode != NL80211_IFTYPE_STATION) {
4676 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4677 "allowed in station mode (iftype=%d)",
4678 drv->nlmode);
4679 return -1;
4680 }
4681 drv->probe_req_report = report;
4682
4683 if (report) {
4684 eloop_cancel_timeout(
4685 wpa_driver_nl80211_probe_req_report_timeout,
4686 drv, NULL);
4687 if (drv->monitor_ifidx < 0 &&
4688 nl80211_create_monitor_interface(drv))
4689 return -1;
4690 } else {
4691 /*
4692 * It takes a while to remove the monitor interface, so try to
4693 * avoid doing this if it is needed again shortly. Instead,
4694 * schedule the interface to be removed later if no need for it
4695 * is seen.
4696 */
4697 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4698 "to be removed after 10 seconds of no use");
4699 eloop_register_timeout(
4700 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4701 drv, NULL);
4702 }
4703
4704 return 0;
4705}
4706
4707
7bfc47c3
JM		 4708static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr)
4709{
4710 struct wpa_driver_nl80211_data *drv = priv;
4711
2ac9688e 4712 if (linux_get_ifhwaddr(drv->ioctl_sock, drv->ifname, addr) < 0)
7bfc47c3
JM		 4713 return -1;
4714
4715 if (addr[0] & 0x02) {
4716 /* TODO: add support for generating multiple addresses */
4717 addr[0] ^= 0x80;
4718 } else
4719 addr[0] = 0x02; /* locally administered */
4720
4721 return 0;
4722}
4723
4724
4725static void wpa_driver_nl80211_release_interface_addr(void *priv,
4726 const u8 *addr)
4727{
4728 /* TODO: keep list of allocated address and release them here */
4729}
4730
4731
4e5cb1a3
JM		 4732static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
4733 int ifindex, int disabled)
4734{
4735 struct nl_msg *msg;
4736 struct nlattr *bands, *band;
4737 int ret;
4738
4739 msg = nlmsg_alloc();
4740 if (!msg)
4741 return -1;
4742
4743 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4744 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
4745 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4746
4747 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
4748 if (!bands)
4749 goto nla_put_failure;
4750
4751 /*
4752 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
4753 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
4754 * rates. All 5 GHz rates are left enabled.
4755 */
4756 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
4757 if (!band)
4758 goto nla_put_failure;
4759 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
4760 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
4761 nla_nest_end(msg, band);
4762
4763 nla_nest_end(msg, bands);
4764
4765 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4766 msg = NULL;
4767 if (ret) {
4768 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
4769 "(%s)", ret, strerror(-ret));
4770 }
4771
4772 return ret;
4773
4774nla_put_failure:
4775 nlmsg_free(msg);
4776 return -1;
4777}
4778
4779
4780static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
4781{
4782 struct wpa_driver_nl80211_data *drv = priv;
4783 drv->disable_11b_rates = disabled;
4784 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
4785}
4786
4787
af473088
JM		 4788static int wpa_driver_nl80211_deinit_ap(void *priv)
4789{
4790 struct wpa_driver_nl80211_data *drv = priv;
4791 if (drv->nlmode != NL80211_IFTYPE_AP)
4792 return -1;
4793 wpa_driver_nl80211_del_beacon(drv);
4794 return wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
4795}
4796
4797
3f5285e8
JM		 4798const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4799 .name = "nl80211",
4800 .desc = "Linux nl80211/cfg80211",
4801 .get_bssid = wpa_driver_nl80211_get_bssid,
4802 .get_ssid = wpa_driver_nl80211_get_ssid,
3f5285e8 4803 .set_key = wpa_driver_nl80211_set_key,
6a1063e0 4804 .scan2 = wpa_driver_nl80211_scan,
3f5285e8
JM		 4805 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4806 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4807 .disassociate = wpa_driver_nl80211_disassociate,
c2a04078 4808 .authenticate = wpa_driver_nl80211_authenticate,
3f5285e8 4809 .associate = wpa_driver_nl80211_associate,
3f5285e8
JM		 4810 .init = wpa_driver_nl80211_init,
4811 .deinit = wpa_driver_nl80211_deinit,
3f5285e8
JM		 4812 .get_capa = wpa_driver_nl80211_get_capa,
4813 .set_operstate = wpa_driver_nl80211_set_operstate,
01652550 4814 .set_supp_port = wpa_driver_nl80211_set_supp_port,
6d158490 4815 .set_country = wpa_driver_nl80211_set_country,
d2440ba0 4816 .set_beacon = wpa_driver_nl80211_set_beacon,
22a7c9d7
JM		 4817 .if_add = wpa_driver_nl80211_if_add,
4818 .if_remove = wpa_driver_nl80211_if_remove,
071f8ac4 4819 .send_mlme = wpa_driver_nl80211_send_mlme,
c3965310 4820 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
0f4e8b4f
JM		 4821 .sta_add = wpa_driver_nl80211_sta_add,
4822 .sta_remove = wpa_driver_nl80211_sta_remove,
db149ac9 4823 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
a8d6ffa4 4824 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
c5121837
JM		 4825#ifdef HOSTAPD
4826 .hapd_init = i802_init,
c5121837 4827 .hapd_deinit = i802_deinit,
c5121837
JM		 4828 .get_seqnum = i802_get_seqnum,
4829 .flush = i802_flush,
4830 .read_sta_data = i802_read_sta_data,
c5121837
JM		 4831 .sta_deauth = i802_sta_deauth,
4832 .sta_disassoc = i802_sta_disassoc,
c5121837
JM		 4833 .get_inact_sec = i802_get_inact_sec,
4834 .sta_clear_stats = i802_sta_clear_stats,
4835 .set_freq = i802_set_freq,
4836 .set_rts = i802_set_rts,
4837 .set_frag = i802_set_frag,
c5121837 4838 .set_rate_sets = i802_set_rate_sets,
c5121837
JM		 4839 .set_cts_protect = i802_set_cts_protect,
4840 .set_preamble = i802_set_preamble,
4841 .set_short_slot_time = i802_set_short_slot_time,
4842 .set_tx_queue_params = i802_set_tx_queue_params,
c5121837 4843 .set_sta_vlan = i802_set_sta_vlan,
fbbfcbac 4844 .set_wds_sta = i802_set_wds_sta,
c5121837 4845#endif /* HOSTAPD */
55777702
JM		 4846 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
4847 .cancel_remain_on_channel =
4848 wpa_driver_nl80211_cancel_remain_on_channel,
504e905c 4849 .probe_req_report = wpa_driver_nl80211_probe_req_report,
7bfc47c3
JM		 4850 .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
4851 .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
4e5cb1a3 4852 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
af473088 4853 .deinit_ap = wpa_driver_nl80211_deinit_ap,
3f5285e8 4854};
Unnamed repository; edit this file 'description' to name the repository.