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VLAN: Set dynamic VLAN up to fix STA bind and key setup
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
CommitLineData
3f5285e8 1/*
c5121837 2 * Driver interaction with Linux nl80211/cfg80211
8d923a4a 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
072ad14c
JM		 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
58f6fbe0 7 * Copyright (c) 2009-2010, Atheros Communications
3f5285e8
JM		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * Alternatively, this software may be distributed under the terms of BSD
14 * license.
15 *
16 * See README and COPYING for more details.
17 */
18
19#include "includes.h"
20#include <sys/ioctl.h>
37b7d082 21#include <net/if.h>
3f5285e8
JM		 22#include <netlink/genl/genl.h>
23#include <netlink/genl/family.h>
24#include <netlink/genl/ctrl.h>
1b648c7e
JM		 25#include <netpacket/packet.h>
26#include <linux/filter.h>
7e45830a 27#include "nl80211_copy.h"
625f587b 28
3f5285e8 29#include "common.h"
1b648c7e
JM		 30#include "eloop.h"
31#include "common/ieee802_11_defs.h"
e2d02c29 32#include "netlink.h"
34f2f814 33#include "linux_ioctl.h"
e2d02c29
JM		 34#include "radiotap.h"
35#include "radiotap_iter.h"
1b648c7e 36#include "driver.h"
0915d02c 37
c5121837
JM		 38#ifdef CONFIG_LIBNL20
39/* libnl 2.0 compatibility code */
2e8eac2d 40#define nl_handle nl_sock
c5121837
JM		 41#define nl_handle_alloc_cb nl_socket_alloc_cb
42#define nl_handle_destroy nl_socket_free
43#endif /* CONFIG_LIBNL20 */
44
c5121837 45
3f5285e8
JM		 46#ifndef IFF_LOWER_UP
47#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
48#endif
49#ifndef IFF_DORMANT
50#define IFF_DORMANT 0x20000 /* driver signals dormant */
51#endif
52
53#ifndef IF_OPER_DORMANT
54#define IF_OPER_DORMANT 5
55#endif
56#ifndef IF_OPER_UP
57#define IF_OPER_UP 6
58#endif
59
c5121837 60struct i802_bss {
a2e40bb6 61 struct wpa_driver_nl80211_data *drv;
c5121837 62 struct i802_bss *next;
b4fd6fab 63 int ifindex;
a2e40bb6 64 char ifname[IFNAMSIZ + 1];
c5121837
JM		 65 unsigned int beacon_set:1;
66};
3f5285e8
JM		 67
68struct wpa_driver_nl80211_data {
69 void *ctx;
08063178 70 struct netlink_data *netlink;
c5121837 71 int ioctl_sock; /* socket for ioctl() use */
94627f6c 72 char brname[IFNAMSIZ];
3f5285e8 73 int ifindex;
7524cfb1 74 int if_removed;
c2a04078
JM		 75 struct wpa_driver_capa capa;
76 int has_capability;
c2a04078 77
3f5285e8
JM		 78 int operstate;
79
3f5285e8
JM		 80 int scan_complete_events;
81
82 struct nl_handle *nl_handle;
335ce76b 83 struct nl_handle *nl_handle_event;
3f5285e8 84 struct nl_cache *nl_cache;
335ce76b 85 struct nl_cache *nl_cache_event;
3f5285e8
JM		 86 struct nl_cb *nl_cb;
87 struct genl_family *nl80211;
1c873584 88
e6b8efeb 89 u8 auth_bssid[ETH_ALEN];
c2a04078
JM		 90 u8 bssid[ETH_ALEN];
91 int associated;
fd05d64e
JM		 92 u8 ssid[32];
93 size_t ssid_len;
ad1e68e6
JM		 94 int nlmode;
95 int ap_scan_as_station;
4832ecd7 96 unsigned int assoc_freq;
d2440ba0 97
0915d02c
JM		 98 int monitor_sock;
99 int monitor_ifidx;
504e905c 100 int probe_req_report;
4e5cb1a3 101 int disable_11b_rates;
7da3abe7 102
55777702 103 unsigned int pending_remain_on_chan:1;
58f6fbe0 104 unsigned int pending_send_action:1;
94627f6c
JM		 105 unsigned int added_bridge:1;
106 unsigned int added_if_into_bridge:1;
55777702
JM		 107
108 u64 remain_on_chan_cookie;
58f6fbe0 109 u64 send_action_cookie;
c5121837 110
3812464c
JM		 111 struct wpa_driver_scan_filter *filter_ssids;
112 size_t num_filter_ssids;
113
a2e40bb6
FF		 114 struct i802_bss first_bss;
115
c5121837 116#ifdef HOSTAPD
c5121837 117 int eapol_sock; /* socket for EAPOL frames */
c5121837
JM		 118
119 int default_if_indices[16];
120 int *if_indices;
121 int num_if_indices;
122
c5121837
JM		 123 int last_freq;
124 int last_freq_ht;
c5121837 125#endif /* HOSTAPD */
3f5285e8
JM		 126};
127
128
129static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
130 void *timeout_ctx);
ad1e68e6 131static int wpa_driver_nl80211_set_mode(void *priv, int mode);
362f781e 132static int
7524cfb1 133wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
d72aad94 134static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
77339912
JM		 135 const u8 *addr, int cmd, u16 reason_code,
136 int local_state_change);
460456f8
JM		 137static void nl80211_remove_monitor_interface(
138 struct wpa_driver_nl80211_data *drv);
0915d02c 139
072ad14c 140#ifdef HOSTAPD
2135f224
JM		 141static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
142static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
fbbfcbac
FF		 143static int wpa_driver_nl80211_if_remove(void *priv,
144 enum wpa_driver_if_type type,
145 const char *ifname);
072ad14c
JM		 146#endif /* HOSTAPD */
147
e3802622 148static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
504e905c
JM		 149static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
150 void *timeout_ctx);
4e5cb1a3
JM		 151static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
152 int ifindex, int disabled);
504e905c 153
3f5285e8 154
6241fcb1
JM		 155/* nl80211 code */
156static int ack_handler(struct nl_msg *msg, void *arg)
157{
158 int *err = arg;
159 *err = 0;
160 return NL_STOP;
161}
162
163static int finish_handler(struct nl_msg *msg, void *arg)
164{
8e8df255
JM		 165 int *ret = arg;
166 *ret = 0;
6241fcb1
JM		 167 return NL_SKIP;
168}
169
170static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
171 void *arg)
172{
173 int *ret = arg;
174 *ret = err->error;
175 return NL_SKIP;
176}
177
5b7b85f6
JM		 178
179static int no_seq_check(struct nl_msg *msg, void *arg)
180{
181 return NL_OK;
182}
183
184
58f6fbe0
JM		 185static int send_and_recv(struct wpa_driver_nl80211_data *drv,
186 struct nl_handle *nl_handle, struct nl_msg *msg,
187 int (*valid_handler)(struct nl_msg *, void *),
188 void *valid_data)
6241fcb1
JM		 189{
190 struct nl_cb *cb;
191 int err = -ENOMEM;
192
193 cb = nl_cb_clone(drv->nl_cb);
194 if (!cb)
195 goto out;
196
58f6fbe0 197 err = nl_send_auto_complete(nl_handle, msg);
6241fcb1
JM		 198 if (err < 0)
199 goto out;
200
201 err = 1;
202
203 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
8e8df255 204 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
6241fcb1
JM		 205 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
206
207 if (valid_handler)
208 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
209 valid_handler, valid_data);
210
211 while (err > 0)
58f6fbe0 212 nl_recvmsgs(nl_handle, cb);
6241fcb1
JM		 213 out:
214 nl_cb_put(cb);
215 nlmsg_free(msg);
216 return err;
217}
218
219
58f6fbe0
JM		 220static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
221 struct nl_msg *msg,
222 int (*valid_handler)(struct nl_msg *, void *),
223 void *valid_data)
224{
225 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
226 valid_data);
227}
228
229
97865538
JM		 230struct family_data {
231 const char *group;
232 int id;
233};
234
235
236static int family_handler(struct nl_msg *msg, void *arg)
237{
238 struct family_data *res = arg;
239 struct nlattr *tb[CTRL_ATTR_MAX + 1];
240 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
241 struct nlattr *mcgrp;
242 int i;
243
244 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
245 genlmsg_attrlen(gnlh, 0), NULL);
246 if (!tb[CTRL_ATTR_MCAST_GROUPS])
247 return NL_SKIP;
248
249 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
250 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
251 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
252 nla_len(mcgrp), NULL);
253 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
254 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
255 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
256 res->group,
257 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
258 continue;
259 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
260 break;
261 };
262
263 return NL_SKIP;
264}
265
266
267static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
268 const char *family, const char *group)
269{
270 struct nl_msg *msg;
271 int ret = -1;
272 struct family_data res = { group, -ENOENT };
273
274 msg = nlmsg_alloc();
275 if (!msg)
276 return -ENOMEM;
277 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
278 0, 0, CTRL_CMD_GETFAMILY, 0);
279 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
280
281 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
282 msg = NULL;
283 if (ret == 0)
284 ret = res.id;
285
286nla_put_failure:
287 nlmsg_free(msg);
288 return ret;
289}
290
291
3f5285e8
JM		 292static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
293{
a2e40bb6
FF		 294 struct i802_bss *bss = priv;
295 struct wpa_driver_nl80211_data *drv = bss->drv;
c2a04078
JM		 296 if (!drv->associated)
297 return -1;
298 os_memcpy(bssid, drv->bssid, ETH_ALEN);
299 return 0;
3f5285e8
JM		 300}
301
302
3f5285e8
JM		 303static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
304{
a2e40bb6
FF		 305 struct i802_bss *bss = priv;
306 struct wpa_driver_nl80211_data *drv = bss->drv;
fd05d64e
JM		 307 if (!drv->associated)
308 return -1;
309 os_memcpy(ssid, drv->ssid, drv->ssid_len);
310 return drv->ssid_len;
3f5285e8
JM		 311}
312
313
7524cfb1 314static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
08063178 315 char *buf, size_t len, int del)
3f5285e8
JM		 316{
317 union wpa_event_data event;
318
319 os_memset(&event, 0, sizeof(event));
320 if (len > sizeof(event.interface_status.ifname))
321 len = sizeof(event.interface_status.ifname) - 1;
322 os_memcpy(event.interface_status.ifname, buf, len);
323 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
324 EVENT_INTERFACE_ADDED;
325
326 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
327 del ? "DEL" : "NEW",
328 event.interface_status.ifname,
329 del ? "removed" : "added");
330
a2e40bb6 331 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
7524cfb1
JM		 332 if (del)
333 drv->if_removed = 1;
334 else
335 drv->if_removed = 0;
336 }
337
08063178 338 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
3f5285e8
JM		 339}
340
341
7524cfb1 342static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
62d680c3 343 u8 *buf, size_t len)
7524cfb1 344{
62d680c3 345 int attrlen, rta_len;
7524cfb1
JM		 346 struct rtattr *attr;
347
62d680c3
JM		 348 attrlen = len;
349 attr = (struct rtattr *) buf;
7524cfb1
JM		 350
351 rta_len = RTA_ALIGN(sizeof(struct rtattr));
352 while (RTA_OK(attr, attrlen)) {
353 if (attr->rta_type == IFLA_IFNAME) {
a2e40bb6 354 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
7524cfb1
JM		 355 == 0)
356 return 1;
357 else
358 break;
359 }
360 attr = RTA_NEXT(attr, attrlen);
361 }
362
363 return 0;
364}
365
366
367static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
62d680c3 368 int ifindex, u8 *buf, size_t len)
7524cfb1
JM		 369{
370 if (drv->ifindex == ifindex)
371 return 1;
372
62d680c3 373 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
a2e40bb6 374 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
7524cfb1
JM		 375 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
376 "interface");
377 wpa_driver_nl80211_finish_drv_init(drv);
378 return 1;
379 }
380
381 return 0;
382}
383
384
62d680c3
JM		 385static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
386 struct ifinfomsg *ifi,
387 u8 *buf, size_t len)
3f5285e8 388{
08063178 389 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 390 int attrlen, rta_len;
391 struct rtattr *attr;
3f5285e8 392
62d680c3 393 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
3f5285e8
JM		 394 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
395 ifi->ifi_index);
396 return;
397 }
398
399 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
400 "(%s%s%s%s)",
401 drv->operstate, ifi->ifi_flags,
402 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
403 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
404 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
405 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
406 /*
407 * Some drivers send the association event before the operup event--in
408 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
409 * fails. This will hit us when wpa_supplicant does not need to do
410 * IEEE 802.1X authentication
411 */
412 if (drv->operstate == 1 &&
413 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
414 !(ifi->ifi_flags & IFF_RUNNING))
08063178 415 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 416 -1, IF_OPER_UP);
3f5285e8 417
62d680c3
JM		 418 attrlen = len;
419 attr = (struct rtattr *) buf;
3f5285e8
JM		 420 rta_len = RTA_ALIGN(sizeof(struct rtattr));
421 while (RTA_OK(attr, attrlen)) {
d8816397 422 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 423 wpa_driver_nl80211_event_link(
08063178 424 drv,
7524cfb1
JM		 425 ((char *) attr) + rta_len,
426 attr->rta_len - rta_len, 0);
3f5285e8
JM		 427 }
428 attr = RTA_NEXT(attr, attrlen);
429 }
430}
431
432
62d680c3
JM		 433static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
434 struct ifinfomsg *ifi,
435 u8 *buf, size_t len)
3f5285e8 436{
08063178 437 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 438 int attrlen, rta_len;
439 struct rtattr *attr;
3f5285e8 440
62d680c3
JM		 441 attrlen = len;
442 attr = (struct rtattr *) buf;
3f5285e8
JM		 443
444 rta_len = RTA_ALIGN(sizeof(struct rtattr));
445 while (RTA_OK(attr, attrlen)) {
446 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 447 wpa_driver_nl80211_event_link(
08063178 448 drv,
7524cfb1
JM		 449 ((char *) attr) + rta_len,
450 attr->rta_len - rta_len, 1);
3f5285e8
JM		 451 }
452 attr = RTA_NEXT(attr, attrlen);
453 }
454}
455
456
c2a04078
JM		 457static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
458 const u8 *frame, size_t len)
459{
460 const struct ieee80211_mgmt *mgmt;
461 union wpa_event_data event;
462
463 mgmt = (const struct ieee80211_mgmt *) frame;
464 if (len < 24 + sizeof(mgmt->u.auth)) {
465 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
466 "frame");
467 return;
468 }
469
e6b8efeb 470 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
c2a04078
JM		 471 os_memset(&event, 0, sizeof(event));
472 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
473 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
474 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
475 if (len > 24 + sizeof(mgmt->u.auth)) {
476 event.auth.ies = mgmt->u.auth.variable;
477 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
478 }
479
480 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
481}
482
483
484static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
485 const u8 *frame, size_t len)
486{
487 const struct ieee80211_mgmt *mgmt;
488 union wpa_event_data event;
489 u16 status;
490
491 mgmt = (const struct ieee80211_mgmt *) frame;
492 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
493 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
494 "frame");
495 return;
496 }
497
498 status = le_to_host16(mgmt->u.assoc_resp.status_code);
499 if (status != WLAN_STATUS_SUCCESS) {
efa46078
JM		 500 os_memset(&event, 0, sizeof(event));
501 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
502 event.assoc_reject.resp_ies =
503 (u8 *) mgmt->u.assoc_resp.variable;
504 event.assoc_reject.resp_ies_len =
505 len - 24 - sizeof(mgmt->u.assoc_resp);
506 }
507 event.assoc_reject.status_code = status;
508
509 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
c2a04078
JM		 510 return;
511 }
512
513 drv->associated = 1;
514 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
515
516 os_memset(&event, 0, sizeof(event));
517 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
518 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
519 event.assoc_info.resp_ies_len =
efa46078 520 len - 24 - sizeof(mgmt->u.assoc_resp);
c2a04078
JM		 521 }
522
4832ecd7
JM		 523 event.assoc_info.freq = drv->assoc_freq;
524
c2a04078
JM		 525 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
526}
527
c1bb3e0a 528
da72a1c1
ZY		 529static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
530 enum nl80211_commands cmd, struct nlattr *status,
531 struct nlattr *addr, struct nlattr *req_ie,
532 struct nlattr *resp_ie)
533{
534 union wpa_event_data event;
535
7da2c527
JM		 536 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
537 /*
538 * Avoid reporting two association events that would confuse
539 * the core code.
540 */
541 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
542 "when using userspace SME", cmd);
543 return;
544 }
545
da72a1c1
ZY		 546 os_memset(&event, 0, sizeof(event));
547 if (cmd == NL80211_CMD_CONNECT &&
548 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
549 if (resp_ie) {
550 event.assoc_reject.resp_ies = nla_data(resp_ie);
551 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
552 }
553 event.assoc_reject.status_code = nla_get_u16(status);
554 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
555 return;
556 }
557
558 drv->associated = 1;
559 if (addr)
560 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
561
562 if (req_ie) {
563 event.assoc_info.req_ies = nla_data(req_ie);
564 event.assoc_info.req_ies_len = nla_len(req_ie);
565 }
566 if (resp_ie) {
567 event.assoc_info.resp_ies = nla_data(resp_ie);
568 event.assoc_info.resp_ies_len = nla_len(resp_ie);
569 }
570
571 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
572}
c2a04078 573
c1bb3e0a 574
da1fb17c
JM		 575static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
576 enum nl80211_commands cmd, struct nlattr *addr)
577{
578 union wpa_event_data event;
579 enum wpa_event_type ev;
580
581 if (nla_len(addr) != ETH_ALEN)
582 return;
583
584 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
585 cmd, MAC2STR((u8 *) nla_data(addr)));
586
587 if (cmd == NL80211_CMD_AUTHENTICATE)
588 ev = EVENT_AUTH_TIMED_OUT;
589 else if (cmd == NL80211_CMD_ASSOCIATE)
590 ev = EVENT_ASSOC_TIMED_OUT;
591 else
592 return;
593
594 os_memset(&event, 0, sizeof(event));
595 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
596 wpa_supplicant_event(drv->ctx, ev, &event);
597}
598
599
58f6fbe0
JM		 600static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
601 struct nlattr *freq, const u8 *frame, size_t len)
602{
603 const struct ieee80211_mgmt *mgmt;
604 union wpa_event_data event;
605 u16 fc, stype;
606
607 mgmt = (const struct ieee80211_mgmt *) frame;
608 if (len < 24) {
609 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
610 return;
611 }
612
613 fc = le_to_host16(mgmt->frame_control);
614 stype = WLAN_FC_GET_STYPE(fc);
615
616 os_memset(&event, 0, sizeof(event));
617 event.rx_action.da = mgmt->da;
618 event.rx_action.sa = mgmt->sa;
619 event.rx_action.bssid = mgmt->bssid;
620 event.rx_action.category = mgmt->u.action.category;
621 event.rx_action.data = &mgmt->u.action.category + 1;
622 event.rx_action.len = frame + len - event.rx_action.data;
623 if (freq)
624 event.rx_action.freq = nla_get_u32(freq);
625 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
626}
627
628
629static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
630 struct nlattr *cookie, const u8 *frame,
631 size_t len, struct nlattr *ack)
632{
633 union wpa_event_data event;
634 const struct ieee80211_hdr *hdr;
635 u16 fc;
636 u64 cookie_val;
637
638 if (!cookie)
639 return;
640
641 cookie_val = nla_get_u64(cookie);
642 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s",
643 (long long unsigned int) cookie_val,
644 cookie_val == drv->send_action_cookie ?
645 " (match)" : " (unknown)");
646 if (cookie_val != drv->send_action_cookie)
647 return;
648
649 hdr = (const struct ieee80211_hdr *) frame;
650 fc = le_to_host16(hdr->frame_control);
651
652 os_memset(&event, 0, sizeof(event));
653 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
654 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
655 event.tx_status.dst = hdr->addr1;
656 event.tx_status.data = frame;
657 event.tx_status.data_len = len;
658 event.tx_status.ack = ack != NULL;
659 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
660}
661
662
0544b242
JM		 663static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
664 enum wpa_event_type type,
665 const u8 *frame, size_t len)
666{
667 const struct ieee80211_mgmt *mgmt;
668 union wpa_event_data event;
669 const u8 *bssid = NULL;
670 u16 reason_code = 0;
671
672 drv->associated = 0;
673 os_memset(&event, 0, sizeof(event));
674
675 mgmt = (const struct ieee80211_mgmt *) frame;
676 if (len >= 24)
677 bssid = mgmt->bssid;
678 /* Note: Same offset for Reason Code in both frame subtypes */
679 if (len >= 24 + sizeof(mgmt->u.deauth))
680 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
681
682 if (type == EVENT_DISASSOC) {
683 event.disassoc_info.addr = bssid;
684 event.disassoc_info.reason_code = reason_code;
685 } else {
686 event.deauth_info.addr = bssid;
687 event.deauth_info.reason_code = reason_code;
688 }
689
690 wpa_supplicant_event(drv->ctx, type, &event);
691}
692
693
c2a04078 694static void mlme_event(struct wpa_driver_nl80211_data *drv,
da1fb17c 695 enum nl80211_commands cmd, struct nlattr *frame,
58f6fbe0
JM		 696 struct nlattr *addr, struct nlattr *timed_out,
697 struct nlattr *freq, struct nlattr *ack,
698 struct nlattr *cookie)
c2a04078 699{
da1fb17c
JM		 700 if (timed_out && addr) {
701 mlme_timeout_event(drv, cmd, addr);
702 return;
703 }
704
c2a04078
JM		 705 if (frame == NULL) {
706 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
707 "data", cmd);
708 return;
709 }
710
711 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
712 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
713 nla_data(frame), nla_len(frame));
714
715 switch (cmd) {
716 case NL80211_CMD_AUTHENTICATE:
717 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
718 break;
719 case NL80211_CMD_ASSOCIATE:
720 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
721 break;
722 case NL80211_CMD_DEAUTHENTICATE:
0544b242
JM		 723 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
724 nla_data(frame), nla_len(frame));
c2a04078
JM		 725 break;
726 case NL80211_CMD_DISASSOCIATE:
0544b242
JM		 727 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
728 nla_data(frame), nla_len(frame));
c2a04078 729 break;
58f6fbe0
JM		 730 case NL80211_CMD_ACTION:
731 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
732 break;
733 case NL80211_CMD_ACTION_TX_STATUS:
734 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
735 nla_len(frame), ack);
736 break;
c2a04078
JM		 737 default:
738 break;
739 }
740}
741
742
35583f3f
JM		 743static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
744 struct nlattr *tb[])
745{
746 union wpa_event_data data;
747
748 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
749 os_memset(&data, 0, sizeof(data));
750 if (tb[NL80211_ATTR_MAC]) {
751 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
752 nla_data(tb[NL80211_ATTR_MAC]),
753 nla_len(tb[NL80211_ATTR_MAC]));
ad1e68e6 754 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
35583f3f
JM		 755 }
756 if (tb[NL80211_ATTR_KEY_SEQ]) {
757 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
758 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
759 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
760 }
761 if (tb[NL80211_ATTR_KEY_TYPE]) {
762 enum nl80211_key_type key_type =
763 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
764 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
765 if (key_type == NL80211_KEYTYPE_PAIRWISE)
766 data.michael_mic_failure.unicast = 1;
767 } else
768 data.michael_mic_failure.unicast = 1;
769
770 if (tb[NL80211_ATTR_KEY_IDX]) {
771 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
772 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
773 }
774
775 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
776}
777
778
5cc4d64b
JM		 779static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
780 struct nlattr *tb[])
781{
782 if (tb[NL80211_ATTR_MAC] == NULL) {
783 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
784 "event");
785 return;
786 }
787 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
788 drv->associated = 1;
789 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
790 MAC2STR(drv->bssid));
791
792 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
793}
794
795
55777702
JM		 796static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
797 int cancel_event, struct nlattr *tb[])
798{
799 unsigned int freq, chan_type, duration;
800 union wpa_event_data data;
801 u64 cookie;
802
803 if (tb[NL80211_ATTR_WIPHY_FREQ])
804 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
805 else
806 freq = 0;
807
808 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
809 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
810 else
811 chan_type = 0;
812
813 if (tb[NL80211_ATTR_DURATION])
814 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
815 else
816 duration = 0;
817
818 if (tb[NL80211_ATTR_COOKIE])
819 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
820 else
821 cookie = 0;
822
823 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
824 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
825 cancel_event, freq, chan_type, duration,
826 (long long unsigned int) cookie,
827 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
828
829 if (cookie != drv->remain_on_chan_cookie)
830 return; /* not for us */
831
832 drv->pending_remain_on_chan = !cancel_event;
833
834 os_memset(&data, 0, sizeof(data));
835 data.remain_on_channel.freq = freq;
836 data.remain_on_channel.duration = duration;
837 wpa_supplicant_event(drv->ctx, cancel_event ?
838 EVENT_CANCEL_REMAIN_ON_CHANNEL :
839 EVENT_REMAIN_ON_CHANNEL, &data);
840}
841
842
8d923a4a
JM		 843static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
844 struct nlattr *tb[])
845{
846 union wpa_event_data event;
847 struct nlattr *nl;
848 int rem;
849 struct scan_info *info;
850#define MAX_REPORT_FREQS 50
851 int freqs[MAX_REPORT_FREQS];
852 int num_freqs = 0;
853
854 os_memset(&event, 0, sizeof(event));
855 info = &event.scan_info;
856 info->aborted = aborted;
857
858 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
859 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
860 struct wpa_driver_scan_ssid *s =
861 &info->ssids[info->num_ssids];
862 s->ssid = nla_data(nl);
863 s->ssid_len = nla_len(nl);
864 info->num_ssids++;
865 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
866 break;
867 }
868 }
869 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
870 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
871 {
872 freqs[num_freqs] = nla_get_u32(nl);
873 num_freqs++;
874 if (num_freqs == MAX_REPORT_FREQS - 1)
875 break;
876 }
877 info->freqs = freqs;
878 info->num_freqs = num_freqs;
879 }
880 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
881}
882
883
93910401
JM		 884static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
885 struct nlattr *tb[])
886{
887 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
888 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
889 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
890 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
891 };
892 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
893 enum nl80211_cqm_rssi_threshold_event event;
b625473c 894 union wpa_event_data ed;
93910401
JM		 895
896 if (tb[NL80211_ATTR_CQM] == NULL ||
897 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
898 cqm_policy)) {
899 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
900 return;
901 }
902
903 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
904 return;
905 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
b625473c
JM		 906
907 os_memset(&ed, 0, sizeof(ed));
908
93910401
JM		 909 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
910 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
911 "event: RSSI high");
b625473c 912 ed.signal_change.above_threshold = 1;
93910401
JM		 913 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
914 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
915 "event: RSSI low");
b625473c
JM		 916 ed.signal_change.above_threshold = 0;
917 } else
918 return;
919
920 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
93910401
JM		 921}
922
923
97865538
JM		 924static int process_event(struct nl_msg *msg, void *arg)
925{
926 struct wpa_driver_nl80211_data *drv = arg;
927 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
928 struct nlattr *tb[NL80211_ATTR_MAX + 1];
0544b242 929 union wpa_event_data data;
97865538
JM		 930
931 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
932 genlmsg_attrlen(gnlh, 0), NULL);
933
934 if (tb[NL80211_ATTR_IFINDEX]) {
935 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
936 if (ifindex != drv->ifindex) {
937 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
938 " for foreign interface (ifindex %d)",
939 gnlh->cmd, ifindex);
940 return NL_SKIP;
941 }
942 }
943
ad1e68e6
JM		 944 if (drv->ap_scan_as_station &&
945 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
946 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
a2e40bb6
FF		 947 wpa_driver_nl80211_set_mode(&drv->first_bss,
948 IEEE80211_MODE_AP);
ad1e68e6
JM		 949 drv->ap_scan_as_station = 0;
950 }
951
97865538 952 switch (gnlh->cmd) {
d942a79e
JM		 953 case NL80211_CMD_TRIGGER_SCAN:
954 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
955 break;
97865538
JM		 956 case NL80211_CMD_NEW_SCAN_RESULTS:
957 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
958 drv->scan_complete_events = 1;
959 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
960 drv->ctx);
8d923a4a 961 send_scan_event(drv, 0, tb);
97865538
JM		 962 break;
963 case NL80211_CMD_SCAN_ABORTED:
964 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
965 /*
966 * Need to indicate that scan results are available in order
967 * not to make wpa_supplicant stop its scanning.
968 */
969 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
970 drv->ctx);
8d923a4a 971 send_scan_event(drv, 1, tb);
97865538 972 break;
c2a04078
JM		 973 case NL80211_CMD_AUTHENTICATE:
974 case NL80211_CMD_ASSOCIATE:
975 case NL80211_CMD_DEAUTHENTICATE:
976 case NL80211_CMD_DISASSOCIATE:
58f6fbe0
JM		 977 case NL80211_CMD_ACTION:
978 case NL80211_CMD_ACTION_TX_STATUS:
da1fb17c 979 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
58f6fbe0
JM		 980 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
981 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
982 tb[NL80211_ATTR_COOKIE]);
c2a04078 983 break;
da72a1c1
ZY		 984 case NL80211_CMD_CONNECT:
985 case NL80211_CMD_ROAM:
986 mlme_event_connect(drv, gnlh->cmd,
987 tb[NL80211_ATTR_STATUS_CODE],
988 tb[NL80211_ATTR_MAC],
989 tb[NL80211_ATTR_REQ_IE],
990 tb[NL80211_ATTR_RESP_IE]);
991 break;
992 case NL80211_CMD_DISCONNECT:
7da2c527
JM		 993 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
994 /*
995 * Avoid reporting two disassociation events that could
996 * confuse the core code.
997 */
998 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
999 "event when using userspace SME");
1000 break;
1001 }
da72a1c1 1002 drv->associated = 0;
0544b242
JM		 1003 os_memset(&data, 0, sizeof(data));
1004 if (tb[NL80211_ATTR_REASON_CODE])
1005 data.disassoc_info.reason_code =
1006 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1007 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
da72a1c1 1008 break;
35583f3f
JM		 1009 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1010 mlme_event_michael_mic_failure(drv, tb);
1011 break;
5cc4d64b
JM		 1012 case NL80211_CMD_JOIN_IBSS:
1013 mlme_event_join_ibss(drv, tb);
1014 break;
55777702
JM		 1015 case NL80211_CMD_REMAIN_ON_CHANNEL:
1016 mlme_event_remain_on_channel(drv, 0, tb);
1017 break;
1018 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1019 mlme_event_remain_on_channel(drv, 1, tb);
1020 break;
93910401
JM		 1021 case NL80211_CMD_NOTIFY_CQM:
1022 nl80211_cqm_event(drv, tb);
1023 break;
97865538 1024 default:
c2a04078
JM		 1025 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1026 "(cmd=%d)", gnlh->cmd);
97865538
JM		 1027 break;
1028 }
1029
1030 return NL_SKIP;
1031}
1032
1033
1034static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1035 void *sock_ctx)
1036{
1037 struct nl_cb *cb;
1038 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1039
1040 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1041
1042 cb = nl_cb_clone(drv->nl_cb);
1043 if (!cb)
1044 return;
1045 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1046 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
335ce76b 1047 nl_recvmsgs(drv->nl_handle_event, cb);
97865538
JM		 1048 nl_cb_put(cb);
1049}
1050
1051
6d158490
LR		 1052/**
1053 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1054 * @priv: driver_nl80211 private data
1055 * @alpha2_arg: country to which to switch to
1056 * Returns: 0 on success, -1 on failure
1057 *
1058 * This asks nl80211 to set the regulatory domain for given
1059 * country ISO / IEC alpha2.
1060 */
1061static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1062{
a2e40bb6
FF		 1063 struct i802_bss *bss = priv;
1064 struct wpa_driver_nl80211_data *drv = bss->drv;
6d158490
LR		 1065 char alpha2[3];
1066 struct nl_msg *msg;
1067
1068 msg = nlmsg_alloc();
1069 if (!msg)
e785c2ba 1070 return -ENOMEM;
6d158490
LR		 1071
1072 alpha2[0] = alpha2_arg[0];
1073 alpha2[1] = alpha2_arg[1];
1074 alpha2[2] = '\0';
1075
1076 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1077 0, NL80211_CMD_REQ_SET_REG, 0);
1078
1079 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1080 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1081 return -EINVAL;
1082 return 0;
1083nla_put_failure:
1084 return -EINVAL;
1085}
1086
1087
bbaf0837 1088#ifndef HOSTAPD
80bc75f1
JM		 1089struct wiphy_info_data {
1090 int max_scan_ssids;
1581b38b 1091 int ap_supported;
93d11400
ZY		 1092 int auth_supported;
1093 int connect_supported;
80bc75f1
JM		 1094};
1095
1096
1097static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1098{
1099 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1100 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1101 struct wiphy_info_data *info = arg;
1102
1103 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1104 genlmsg_attrlen(gnlh, 0), NULL);
1105
1106 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1107 info->max_scan_ssids =
1108 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1109
1581b38b
JM		 1110 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1111 struct nlattr *nl_mode;
1112 int i;
1113 nla_for_each_nested(nl_mode,
1114 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1115 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1116 info->ap_supported = 1;
1117 break;
1118 }
1119 }
1120 }
1121
93d11400
ZY		 1122 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1123 struct nlattr *nl_cmd;
1124 int i;
1125
1126 nla_for_each_nested(nl_cmd,
1127 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1128 u32 cmd = nla_get_u32(nl_cmd);
1129 if (cmd == NL80211_CMD_AUTHENTICATE)
1130 info->auth_supported = 1;
1131 else if (cmd == NL80211_CMD_CONNECT)
1132 info->connect_supported = 1;
1133 }
1134 }
1135
80bc75f1
JM		 1136 return NL_SKIP;
1137}
1138
1139
1140static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1141 struct wiphy_info_data *info)
1142{
1143 struct nl_msg *msg;
1144
1145 os_memset(info, 0, sizeof(*info));
1146 msg = nlmsg_alloc();
1147 if (!msg)
1148 return -1;
1149
1150 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1151 0, NL80211_CMD_GET_WIPHY, 0);
1152
a2e40bb6 1153 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
80bc75f1
JM		 1154
1155 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1156 return 0;
1157 msg = NULL;
1158nla_put_failure:
1159 nlmsg_free(msg);
1160 return -1;
1161}
1162
1163
93d11400 1164static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
80bc75f1
JM		 1165{
1166 struct wiphy_info_data info;
1167 if (wpa_driver_nl80211_get_info(drv, &info))
93d11400 1168 return -1;
80bc75f1 1169 drv->has_capability = 1;
1b2a72e8
JM		 1170 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1171 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1172 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1173 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1174 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1175 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1176 WPA_DRIVER_CAPA_ENC_WEP104 |
1177 WPA_DRIVER_CAPA_ENC_TKIP |
1178 WPA_DRIVER_CAPA_ENC_CCMP;
291b6068
JM		 1179 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1180 WPA_DRIVER_AUTH_SHARED |
1181 WPA_DRIVER_AUTH_LEAP;
1b2a72e8 1182
80bc75f1 1183 drv->capa.max_scan_ssids = info.max_scan_ssids;
1581b38b
JM		 1184 if (info.ap_supported)
1185 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
93d11400
ZY		 1186
1187 if (info.auth_supported)
1188 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1189 else if (!info.connect_supported) {
1190 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1191 "authentication/association or connect commands");
1192 return -1;
1193 }
1194
0194fedb 1195 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
814782b9 1196 drv->capa.max_remain_on_chan = 5000;
0194fedb 1197
93d11400 1198 return 0;
80bc75f1 1199}
bbaf0837 1200#endif /* HOSTAPD */
80bc75f1
JM		 1201
1202
9fff9fdc
JM		 1203static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1204 void *ctx)
3f5285e8 1205{
9fff9fdc 1206 int ret;
3f5285e8 1207
9fff9fdc 1208 /* Initialize generic netlink and nl80211 */
3f5285e8
JM		 1209
1210 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1211 if (drv->nl_cb == NULL) {
1212 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1213 "callbacks");
1214 goto err1;
1215 }
1216
1217 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1218 if (drv->nl_handle == NULL) {
1219 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1220 "callbacks");
1221 goto err2;
1222 }
1223
335ce76b
JM		 1224 drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1225 if (drv->nl_handle_event == NULL) {
1226 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1227 "callbacks (event)");
1228 goto err2b;
1229 }
1230
3f5285e8
JM		 1231 if (genl_connect(drv->nl_handle)) {
1232 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1233 "netlink");
1234 goto err3;
1235 }
1236
335ce76b
JM		 1237 if (genl_connect(drv->nl_handle_event)) {
1238 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1239 "netlink (event)");
1240 goto err3;
1241 }
1242
9fff9fdc
JM		 1243#ifdef CONFIG_LIBNL20
1244 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1245 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1246 "netlink cache");
1247 goto err3;
1248 }
335ce76b
JM		 1249 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1250 0) {
1251 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1252 "netlink cache (event)");
1253 goto err3b;
1254 }
9fff9fdc 1255#else /* CONFIG_LIBNL20 */
3f5285e8
JM		 1256 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1257 if (drv->nl_cache == NULL) {
1258 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1259 "netlink cache");
1260 goto err3;
1261 }
335ce76b
JM		 1262 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1263 if (drv->nl_cache_event == NULL) {
1264 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1265 "netlink cache (event)");
1266 goto err3b;
1267 }
9fff9fdc
JM		 1268#endif /* CONFIG_LIBNL20 */
1269
3f5285e8
JM		 1270 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1271 if (drv->nl80211 == NULL) {
1272 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1273 "found");
1274 goto err4;
1275 }
1276
97865538
JM		 1277 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1278 if (ret >= 0)
335ce76b 1279 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
97865538
JM		 1280 if (ret < 0) {
1281 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1282 "membership for scan events: %d (%s)",
1283 ret, strerror(-ret));
1284 goto err4;
1285 }
c2a04078
JM		 1286
1287 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1288 if (ret >= 0)
335ce76b 1289 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
c2a04078
JM		 1290 if (ret < 0) {
1291 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1292 "membership for mlme events: %d (%s)",
1293 ret, strerror(-ret));
1294 goto err4;
1295 }
c2a04078 1296
335ce76b 1297 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
97865538
JM		 1298 wpa_driver_nl80211_event_receive, drv, ctx);
1299
9fff9fdc
JM		 1300 return 0;
1301
1302err4:
335ce76b
JM		 1303 nl_cache_free(drv->nl_cache_event);
1304err3b:
9fff9fdc
JM		 1305 nl_cache_free(drv->nl_cache);
1306err3:
335ce76b
JM		 1307 nl_handle_destroy(drv->nl_handle_event);
1308err2b:
9fff9fdc
JM		 1309 nl_handle_destroy(drv->nl_handle);
1310err2:
1311 nl_cb_put(drv->nl_cb);
1312err1:
1313 return -1;
1314}
1315
1316
1317/**
1318 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1319 * @ctx: context to be used when calling wpa_supplicant functions,
1320 * e.g., wpa_supplicant_event()
1321 * @ifname: interface name, e.g., wlan0
1322 * Returns: Pointer to private data, %NULL on failure
1323 */
1324static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1325{
9fff9fdc 1326 struct wpa_driver_nl80211_data *drv;
08063178 1327 struct netlink_config *cfg;
a2e40bb6 1328 struct i802_bss *bss;
9fff9fdc
JM		 1329
1330 drv = os_zalloc(sizeof(*drv));
1331 if (drv == NULL)
1332 return NULL;
1333 drv->ctx = ctx;
a2e40bb6
FF		 1334 bss = &drv->first_bss;
1335 bss->drv = drv;
1336 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
9fff9fdc
JM		 1337 drv->monitor_ifidx = -1;
1338 drv->monitor_sock = -1;
bbaf0837 1339 drv->ioctl_sock = -1;
9fff9fdc 1340
bbaf0837
JM		 1341 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1342 os_free(drv);
1343 return NULL;
1344 }
9fff9fdc 1345
3f5285e8
JM		 1346 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1347 if (drv->ioctl_sock < 0) {
1348 perror("socket(PF_INET,SOCK_DGRAM)");
bbaf0837 1349 goto failed;
3f5285e8
JM		 1350 }
1351
08063178
JM		 1352 cfg = os_zalloc(sizeof(*cfg));
1353 if (cfg == NULL)
1354 goto failed;
1355 cfg->ctx = drv;
1356 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1357 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1358 drv->netlink = netlink_init(cfg);
1359 if (drv->netlink == NULL) {
1360 os_free(cfg);
1361 goto failed;
1362 }
1363 if (wpa_driver_nl80211_finish_drv_init(drv))
bbaf0837 1364 goto failed;
7524cfb1 1365
a2e40bb6 1366 return bss;
7524cfb1 1367
bbaf0837 1368failed:
08063178 1369 netlink_deinit(drv->netlink);
bbaf0837
JM		 1370 if (drv->ioctl_sock >= 0)
1371 close(drv->ioctl_sock);
1372
7524cfb1 1373 genl_family_put(drv->nl80211);
7524cfb1 1374 nl_cache_free(drv->nl_cache);
7524cfb1 1375 nl_handle_destroy(drv->nl_handle);
7524cfb1 1376 nl_cb_put(drv->nl_cb);
05ba8690 1377 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
bbaf0837 1378
7524cfb1
JM		 1379 os_free(drv);
1380 return NULL;
1381}
1382
1383
58f6fbe0
JM		 1384static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1385 const u8 *match, size_t match_len)
1386{
1387 struct nl_msg *msg;
1388 int ret = -1;
1389
1390 msg = nlmsg_alloc();
1391 if (!msg)
1392 return -1;
1393
1394 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1395 NL80211_CMD_REGISTER_ACTION, 0);
1396
1397 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1398 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1399
1400 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1401 msg = NULL;
1402 if (ret) {
1403 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1404 "failed: ret=%d (%s)", ret, strerror(-ret));
1405 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1406 match, match_len);
1407 goto nla_put_failure;
1408 }
1409 ret = 0;
1410nla_put_failure:
1411 nlmsg_free(msg);
1412 return ret;
1413}
1414
1415
1416static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1417{
7b90c16a
JM		 1418 /* FT Action frames */
1419 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1420 return -1;
1421 else
1422 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1423 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1424
58f6fbe0
JM		 1425 return 0;
1426}
1427
1428
362f781e 1429static int
7524cfb1
JM		 1430wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1431{
a2e40bb6
FF		 1432 struct i802_bss *bss = &drv->first_bss;
1433
1434 drv->ifindex = if_nametoindex(bss->ifname);
1435 drv->first_bss.ifindex = drv->ifindex;
a87c9d96 1436
bbaf0837 1437#ifndef HOSTAPD
a2e40bb6 1438 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
a87c9d96
JM		 1439 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1440 "use managed mode");
1441 }
1442
a2e40bb6 1443 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
34f2f814 1444 wpa_printf(MSG_ERROR, "Could not set interface '%s' UP",
a2e40bb6 1445 bss->ifname);
362f781e
JM		 1446 return -1;
1447 }
3f5285e8 1448
93d11400
ZY		 1449 if (wpa_driver_nl80211_capa(drv))
1450 return -1;
80bc75f1 1451
08063178 1452 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 1453 1, IF_OPER_DORMANT);
bbaf0837 1454#endif /* HOSTAPD */
362f781e 1455
7b90c16a
JM		 1456 if (nl80211_register_action_frames(drv) < 0) {
1457 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1458 "frame processing - ignore for now");
1459 /*
1460 * Older kernel versions did not support this, so ignore the
1461 * error for now. Some functionality may not be available
1462 * because of this.
1463 */
1464 }
58f6fbe0 1465
362f781e 1466 return 0;
3f5285e8
JM		 1467}
1468
1469
8a27af5c
JM		 1470static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1471{
1472 struct nl_msg *msg;
1473
1474 msg = nlmsg_alloc();
1475 if (!msg)
1476 return -ENOMEM;
1477
1478 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1479 0, NL80211_CMD_DEL_BEACON, 0);
1480 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1481
1482 return send_and_recv_msgs(drv, msg, NULL, NULL);
1483 nla_put_failure:
1484 return -ENOBUFS;
1485}
8a27af5c
JM		 1486
1487
3f5285e8 1488/**
7e5ba1b9
JM		 1489 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1490 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3f5285e8
JM		 1491 *
1492 * Shut down driver interface and processing of driver events. Free
1493 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1494 */
7e5ba1b9 1495static void wpa_driver_nl80211_deinit(void *priv)
3f5285e8 1496{
a2e40bb6
FF		 1497 struct i802_bss *bss = priv;
1498 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8 1499
94627f6c 1500 if (drv->added_if_into_bridge) {
a2e40bb6 1501 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
94627f6c
JM		 1502 < 0)
1503 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1504 "interface %s from bridge %s: %s",
a2e40bb6 1505 bss->ifname, drv->brname, strerror(errno));
94627f6c
JM		 1506 }
1507 if (drv->added_bridge) {
1508 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1509 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1510 "bridge %s: %s",
1511 drv->brname, strerror(errno));
1512 }
1513
460456f8 1514 nl80211_remove_monitor_interface(drv);
8a27af5c
JM		 1515
1516 if (drv->nlmode == NL80211_IFTYPE_AP)
1517 wpa_driver_nl80211_del_beacon(drv);
0915d02c 1518
bbaf0837
JM		 1519#ifdef HOSTAPD
1520 if (drv->last_freq_ht) {
1521 /* Clear HT flags from the driver */
1522 struct hostapd_freq_params freq;
1523 os_memset(&freq, 0, sizeof(freq));
1524 freq.freq = drv->last_freq;
1525 i802_set_freq(priv, &freq);
1526 }
1527
bbaf0837
JM		 1528 if (drv->eapol_sock >= 0) {
1529 eloop_unregister_read_sock(drv->eapol_sock);
1530 close(drv->eapol_sock);
1531 }
1532
1533 if (drv->if_indices != drv->default_if_indices)
1534 os_free(drv->if_indices);
1b648c7e 1535#endif /* HOSTAPD */
3f5285e8 1536
4e5cb1a3
JM		 1537 if (drv->disable_11b_rates)
1538 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1539
08063178
JM		 1540 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1541 netlink_deinit(drv->netlink);
3f5285e8 1542
bbaf0837
JM		 1543 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1544
a2e40bb6
FF		 1545 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1546 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
3f5285e8 1547
bbaf0837
JM		 1548 if (drv->ioctl_sock >= 0)
1549 close(drv->ioctl_sock);
3f5285e8 1550
335ce76b 1551 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
3f5285e8
JM		 1552 genl_family_put(drv->nl80211);
1553 nl_cache_free(drv->nl_cache);
335ce76b 1554 nl_cache_free(drv->nl_cache_event);
3f5285e8 1555 nl_handle_destroy(drv->nl_handle);
335ce76b 1556 nl_handle_destroy(drv->nl_handle_event);
3f5285e8
JM		 1557 nl_cb_put(drv->nl_cb);
1558
504e905c
JM		 1559 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1560 drv, NULL);
1561
3812464c
JM		 1562 os_free(drv->filter_ssids);
1563
3f5285e8
JM		 1564 os_free(drv);
1565}
1566
1567
1568/**
1569 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
ad1e68e6 1570 * @eloop_ctx: Driver private data
3f5285e8
JM		 1571 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1572 *
1573 * This function can be used as registered timeout when starting a scan to
1574 * generate a scan completed event if the driver does not report this.
1575 */
1576static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1577{
ad1e68e6
JM		 1578 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1579 if (drv->ap_scan_as_station) {
a2e40bb6
FF		 1580 wpa_driver_nl80211_set_mode(&drv->first_bss,
1581 IEEE80211_MODE_AP);
ad1e68e6
JM		 1582 drv->ap_scan_as_station = 0;
1583 }
3f5285e8
JM		 1584 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1585 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1586}
1587
1588
1589/**
1590 * wpa_driver_nl80211_scan - Request the driver to initiate scan
ad1e68e6 1591 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
6a1063e0 1592 * @params: Scan parameters
3f5285e8
JM		 1593 * Returns: 0 on success, -1 on failure
1594 */
6a1063e0
JM		 1595static int wpa_driver_nl80211_scan(void *priv,
1596 struct wpa_driver_scan_params *params)
3f5285e8 1597{
a2e40bb6
FF		 1598 struct i802_bss *bss = priv;
1599 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8 1600 int ret = 0, timeout;
d3a98225 1601 struct nl_msg *msg, *ssids, *freqs;
6a1063e0 1602 size_t i;
3f5285e8 1603
0e75527f
JM		 1604 msg = nlmsg_alloc();
1605 ssids = nlmsg_alloc();
d3a98225
JM		 1606 freqs = nlmsg_alloc();
1607 if (!msg || !ssids || !freqs) {
0e75527f
JM		 1608 nlmsg_free(msg);
1609 nlmsg_free(ssids);
d3a98225 1610 nlmsg_free(freqs);
3f5285e8
JM		 1611 return -1;
1612 }
1613
3812464c
JM		 1614 os_free(drv->filter_ssids);
1615 drv->filter_ssids = params->filter_ssids;
1616 params->filter_ssids = NULL;
1617 drv->num_filter_ssids = params->num_filter_ssids;
1618
0e75527f
JM		 1619 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1620 NL80211_CMD_TRIGGER_SCAN, 0);
1621
1622 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1623
6a1063e0 1624 for (i = 0; i < params->num_ssids; i++) {
9fad706c
JM		 1625 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1626 params->ssids[i].ssid,
1627 params->ssids[i].ssid_len);
6a1063e0
JM		 1628 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1629 params->ssids[i].ssid);
3f5285e8 1630 }
6a1063e0
JM		 1631 if (params->num_ssids)
1632 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3f5285e8 1633
d173df52 1634 if (params->extra_ies) {
9fad706c
JM		 1635 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1636 params->extra_ies, params->extra_ies_len);
d173df52
JM		 1637 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1638 params->extra_ies);
1639 }
1640
d3a98225 1641 if (params->freqs) {
9fad706c
JM		 1642 for (i = 0; params->freqs[i]; i++) {
1643 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1644 "MHz", params->freqs[i]);
d3a98225 1645 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
9fad706c 1646 }
d3a98225
JM		 1647 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1648 }
1649
0e75527f
JM		 1650 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1651 msg = NULL;
1652 if (ret) {
1653 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1654 "(%s)", ret, strerror(-ret));
ad1e68e6
JM		 1655#ifdef HOSTAPD
1656 if (drv->nlmode == NL80211_IFTYPE_AP) {
1657 /*
1658 * mac80211 does not allow scan requests in AP mode, so
1659 * try to do this in station mode.
1660 */
a2e40bb6 1661 if (wpa_driver_nl80211_set_mode(bss,
ad1e68e6
JM		 1662 IEEE80211_MODE_INFRA))
1663 goto nla_put_failure;
1664
1665 if (wpa_driver_nl80211_scan(drv, params)) {
a2e40bb6 1666 wpa_driver_nl80211_set_mode(bss,
ad1e68e6
JM		 1667 IEEE80211_MODE_AP);
1668 goto nla_put_failure;
1669 }
1670
1671 /* Restore AP mode when processing scan results */
1672 drv->ap_scan_as_station = 1;
1673 ret = 0;
1674 } else
1675 goto nla_put_failure;
1676#else /* HOSTAPD */
0e75527f 1677 goto nla_put_failure;
ad1e68e6 1678#endif /* HOSTAPD */
3f5285e8
JM		 1679 }
1680
1681 /* Not all drivers generate "scan completed" wireless event, so try to
1682 * read results after a timeout. */
0e75527f 1683 timeout = 10;
3f5285e8
JM		 1684 if (drv->scan_complete_events) {
1685 /*
d173df52
JM		 1686 * The driver seems to deliver events to notify when scan is
1687 * complete, so use longer timeout to avoid race conditions
1688 * with scanning and following association request.
3f5285e8
JM		 1689 */
1690 timeout = 30;
1691 }
1692 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1693 "seconds", ret, timeout);
1694 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
0e75527f
JM		 1695 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1696 drv, drv->ctx);
3f5285e8 1697
0e75527f
JM		 1698nla_put_failure:
1699 nlmsg_free(ssids);
1700 nlmsg_free(msg);
d3a98225 1701 nlmsg_free(freqs);
3f5285e8
JM		 1702 return ret;
1703}
1704
1705
3812464c
JM		 1706static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1707{
1708 const u8 *end, *pos;
1709
1710 if (ies == NULL)
1711 return NULL;
1712
1713 pos = ies;
1714 end = ies + ies_len;
1715
1716 while (pos + 1 < end) {
1717 if (pos + 2 + pos[1] > end)
1718 break;
1719 if (pos[0] == ie)
1720 return pos;
1721 pos += 2 + pos[1];
1722 }
1723
1724 return NULL;
1725}
1726
1727
1728static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1729 const u8 *ie, size_t ie_len)
1730{
1731 const u8 *ssid;
1732 size_t i;
1733
1734 if (drv->filter_ssids == NULL)
1735 return 0;
1736
1737 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
1738 if (ssid == NULL)
1739 return 1;
1740
1741 for (i = 0; i < drv->num_filter_ssids; i++) {
1742 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
1743 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
1744 0)
1745 return 0;
1746 }
1747
1748 return 1;
1749}
1750
1751
1752struct nl80211_bss_info_arg {
1753 struct wpa_driver_nl80211_data *drv;
1754 struct wpa_scan_results *res;
1755};
1756
b3db1e1c 1757static int bss_info_handler(struct nl_msg *msg, void *arg)
3f5285e8 1758{
b3db1e1c
JM		 1759 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1760 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1761 struct nlattr *bss[NL80211_BSS_MAX + 1];
1762 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1763 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1764 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1765 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1766 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1767 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1768 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1769 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1770 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
e6b8efeb 1771 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
b3ad11bb 1772 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
8c090654 1773 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
b3db1e1c 1774 };
3812464c
JM		 1775 struct nl80211_bss_info_arg *_arg = arg;
1776 struct wpa_scan_results *res = _arg->res;
3f5285e8
JM		 1777 struct wpa_scan_res **tmp;
1778 struct wpa_scan_res *r;
8c090654
JM		 1779 const u8 *ie, *beacon_ie;
1780 size_t ie_len, beacon_ie_len;
1781 u8 *pos;
3f5285e8 1782
b3db1e1c
JM		 1783 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1784 genlmsg_attrlen(gnlh, 0), NULL);
1785 if (!tb[NL80211_ATTR_BSS])
1786 return NL_SKIP;
1787 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1788 bss_policy))
1789 return NL_SKIP;
1790 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1791 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1792 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1793 } else {
1794 ie = NULL;
1795 ie_len = 0;
1796 }
8c090654
JM		 1797 if (bss[NL80211_BSS_BEACON_IES]) {
1798 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
1799 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
1800 } else {
1801 beacon_ie = NULL;
1802 beacon_ie_len = 0;
1803 }
3f5285e8 1804
3812464c
JM		 1805 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
1806 ie ? ie_len : beacon_ie_len))
1807 return NL_SKIP;
1808
8c090654 1809 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3f5285e8 1810 if (r == NULL)
b3db1e1c
JM		 1811 return NL_SKIP;
1812 if (bss[NL80211_BSS_BSSID])
1813 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1814 ETH_ALEN);
1815 if (bss[NL80211_BSS_FREQUENCY])
1816 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1817 if (bss[NL80211_BSS_BEACON_INTERVAL])
1818 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1819 if (bss[NL80211_BSS_CAPABILITY])
1820 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
7c2849d2
JM		 1821 r->flags |= WPA_SCAN_NOISE_INVALID;
1822 if (bss[NL80211_BSS_SIGNAL_MBM]) {
b3db1e1c 1823 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
7c2849d2
JM		 1824 r->level /= 100; /* mBm to dBm */
1825 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1826 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1827 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1828 r->flags |= WPA_SCAN_LEVEL_INVALID;
1829 } else
1830 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
b3db1e1c
JM		 1831 if (bss[NL80211_BSS_TSF])
1832 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
b3ad11bb
JM		 1833 if (bss[NL80211_BSS_SEEN_MS_AGO])
1834 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
b3db1e1c 1835 r->ie_len = ie_len;
8c090654
JM		 1836 pos = (u8 *) (r + 1);
1837 if (ie) {
1838 os_memcpy(pos, ie, ie_len);
1839 pos += ie_len;
1840 }
1841 r->beacon_ie_len = beacon_ie_len;
1842 if (beacon_ie)
1843 os_memcpy(pos, beacon_ie, beacon_ie_len);
3f5285e8 1844
e6b8efeb
JM		 1845 if (bss[NL80211_BSS_STATUS]) {
1846 enum nl80211_bss_status status;
1847 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1848 switch (status) {
1849 case NL80211_BSS_STATUS_AUTHENTICATED:
1850 r->flags |= WPA_SCAN_AUTHENTICATED;
1851 break;
1852 case NL80211_BSS_STATUS_ASSOCIATED:
1853 r->flags |= WPA_SCAN_ASSOCIATED;
1854 break;
1855 default:
1856 break;
1857 }
1858 }
1859
3f5285e8
JM		 1860 tmp = os_realloc(res->res,
1861 (res->num + 1) * sizeof(struct wpa_scan_res *));
1862 if (tmp == NULL) {
1863 os_free(r);
b3db1e1c 1864 return NL_SKIP;
3f5285e8
JM		 1865 }
1866 tmp[res->num++] = r;
1867 res->res = tmp;
b3db1e1c
JM		 1868
1869 return NL_SKIP;
3f5285e8 1870}
b3db1e1c 1871
3f5285e8 1872
d72aad94
JM		 1873static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1874 const u8 *addr)
1875{
1876 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1877 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
582507be 1878 "mismatch (" MACSTR ")", MAC2STR(addr));
d72aad94
JM		 1879 wpa_driver_nl80211_mlme(drv, addr,
1880 NL80211_CMD_DEAUTHENTICATE,
77339912 1881 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
d72aad94
JM		 1882 }
1883}
1884
1885
e6b8efeb
JM		 1886static void wpa_driver_nl80211_check_bss_status(
1887 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1888{
1889 size_t i;
1890
1891 for (i = 0; i < res->num; i++) {
1892 struct wpa_scan_res *r = res->res[i];
1893 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1894 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1895 "indicates BSS status with " MACSTR
1896 " as authenticated",
1897 MAC2STR(r->bssid));
1898 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1899 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1900 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1901 0) {
1902 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1903 " in local state (auth=" MACSTR
1904 " assoc=" MACSTR ")",
1905 MAC2STR(drv->auth_bssid),
1906 MAC2STR(drv->bssid));
582507be 1907 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1908 }
1909 }
1910
1911 if (r->flags & WPA_SCAN_ASSOCIATED) {
1912 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1913 "indicate BSS status with " MACSTR
1914 " as associated",
1915 MAC2STR(r->bssid));
1916 if (drv->nlmode == NL80211_IFTYPE_STATION &&
1917 !drv->associated) {
1918 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1919 "(not associated) does not match "
1920 "with BSS state");
d72aad94 1921 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 1922 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1923 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1924 0) {
1925 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1926 "(associated with " MACSTR ") does "
1927 "not match with BSS state",
d72aad94
JM		 1928 MAC2STR(drv->bssid));
1929 clear_state_mismatch(drv, r->bssid);
1930 clear_state_mismatch(drv, drv->bssid);
e6b8efeb
JM		 1931 }
1932 }
1933 }
1934}
1935
1936
d1f9c410
JM		 1937static void wpa_scan_results_free(struct wpa_scan_results *res)
1938{
1939 size_t i;
1940
1941 if (res == NULL)
1942 return;
1943
1944 for (i = 0; i < res->num; i++)
1945 os_free(res->res[i]);
1946 os_free(res->res);
1947 os_free(res);
1948}
1949
1950
7e5ba1b9 1951static struct wpa_scan_results *
8856462d 1952nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3f5285e8 1953{
b3db1e1c 1954 struct nl_msg *msg;
3f5285e8 1955 struct wpa_scan_results *res;
b3db1e1c 1956 int ret;
3812464c 1957 struct nl80211_bss_info_arg arg;
3f5285e8
JM		 1958
1959 res = os_zalloc(sizeof(*res));
b3db1e1c 1960 if (res == NULL)
8e2c104f 1961 return NULL;
b3db1e1c
JM		 1962 msg = nlmsg_alloc();
1963 if (!msg)
1964 goto nla_put_failure;
3f5285e8 1965
b3db1e1c
JM		 1966 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1967 NL80211_CMD_GET_SCAN, 0);
1968 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1969
3812464c
JM		 1970 arg.drv = drv;
1971 arg.res = res;
1972 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
b3db1e1c
JM		 1973 msg = NULL;
1974 if (ret == 0) {
1975 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1976 (unsigned long) res->num);
1977 return res;
3f5285e8 1978 }
b3db1e1c
JM		 1979 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1980 "(%s)", ret, strerror(-ret));
1981nla_put_failure:
1982 nlmsg_free(msg);
1983 wpa_scan_results_free(res);
1984 return NULL;
3f5285e8
JM		 1985}
1986
1987
8856462d
JM		 1988/**
1989 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1990 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1991 * Returns: Scan results on success, -1 on failure
1992 */
1993static struct wpa_scan_results *
1994wpa_driver_nl80211_get_scan_results(void *priv)
1995{
a2e40bb6
FF		 1996 struct i802_bss *bss = priv;
1997 struct wpa_driver_nl80211_data *drv = bss->drv;
8856462d
JM		 1998 struct wpa_scan_results *res;
1999
2000 res = nl80211_get_scan_results(drv);
2001 if (res)
2002 wpa_driver_nl80211_check_bss_status(drv, res);
2003 return res;
2004}
2005
2006
2007static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2008{
2009 struct wpa_scan_results *res;
2010 size_t i;
2011
2012 res = nl80211_get_scan_results(drv);
2013 if (res == NULL) {
2014 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2015 return;
2016 }
2017
2018 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2019 for (i = 0; i < res->num; i++) {
2020 struct wpa_scan_res *r = res->res[i];
2021 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2022 (int) i, (int) res->num, MAC2STR(r->bssid),
2023 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2024 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2025 }
2026
2027 wpa_scan_results_free(res);
2028}
2029
2030
642187d6 2031static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
71934751
JM		 2032 enum wpa_alg alg, const u8 *addr,
2033 int key_idx, int set_tx,
642187d6
JM		 2034 const u8 *seq, size_t seq_len,
2035 const u8 *key, size_t key_len)
3f5285e8 2036{
a2e40bb6
FF		 2037 struct i802_bss *bss = priv;
2038 struct wpa_driver_nl80211_data *drv = bss->drv;
642187d6 2039 int ifindex = if_nametoindex(ifname);
3f5285e8 2040 struct nl_msg *msg;
1ad1cdc2 2041 int ret;
3f5285e8 2042
1ad1cdc2
JM		 2043 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2044 "set_tx=%d seq_len=%lu key_len=%lu",
2045 __func__, ifindex, alg, addr, key_idx, set_tx,
3f5285e8
JM		 2046 (unsigned long) seq_len, (unsigned long) key_len);
2047
2048 msg = nlmsg_alloc();
1ad1cdc2
JM		 2049 if (!msg)
2050 return -ENOMEM;
3f5285e8
JM		 2051
2052 if (alg == WPA_ALG_NONE) {
1ad1cdc2
JM		 2053 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2054 0, NL80211_CMD_DEL_KEY, 0);
3f5285e8 2055 } else {
1ad1cdc2
JM		 2056 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2057 0, NL80211_CMD_NEW_KEY, 0);
3f5285e8 2058 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
d723bab4
JM		 2059 switch (alg) {
2060 case WPA_ALG_WEP:
2061 if (key_len == 5)
2062 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2063 WLAN_CIPHER_SUITE_WEP40);
2064 else
2065 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2066 WLAN_CIPHER_SUITE_WEP104);
2067 break;
2068 case WPA_ALG_TKIP:
2069 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2070 WLAN_CIPHER_SUITE_TKIP);
2071 break;
2072 case WPA_ALG_CCMP:
2073 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2074 WLAN_CIPHER_SUITE_CCMP);
2075 break;
2076 case WPA_ALG_IGTK:
2077 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2078 WLAN_CIPHER_SUITE_AES_CMAC);
2079 break;
2080 default:
2081 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2082 "algorithm %d", __func__, alg);
3f5285e8
JM		 2083 nlmsg_free(msg);
2084 return -1;
2085 }
2086 }
2087
849ef835 2088 if (seq && seq_len)
1ad1cdc2
JM		 2089 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2090
3f5285e8
JM		 2091 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2092 {
2093 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2094 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2095 }
2096 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1ad1cdc2 2097 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3f5285e8 2098
1ad1cdc2 2099 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
15664ad0 2100 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
1ad1cdc2
JM		 2101 ret = 0;
2102 if (ret)
2103 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2104 ret, strerror(-ret));
3f5285e8 2105
1ad1cdc2
JM		 2106 /*
2107 * If we failed or don't need to set the default TX key (below),
2108 * we're done here.
2109 */
2110 if (ret || !set_tx || alg == WPA_ALG_NONE)
2111 return ret;
de12717a 2112#ifdef HOSTAPD
1ad1cdc2
JM		 2113 if (addr)
2114 return ret;
de12717a
JM		 2115#else /* HOSTAPD */
2116 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2117 return ret;
1ad1cdc2 2118#endif /* HOSTAPD */
3f5285e8 2119
1ad1cdc2
JM		 2120 msg = nlmsg_alloc();
2121 if (!msg)
2122 return -ENOMEM;
3f5285e8 2123
1ad1cdc2
JM		 2124 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2125 0, NL80211_CMD_SET_KEY, 0);
2126 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2127 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2128 if (alg == WPA_ALG_IGTK)
2129 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2130 else
2131 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3f5285e8 2132
1ad1cdc2
JM		 2133 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2134 if (ret == -ENOENT)
2135 ret = 0;
2136 if (ret)
2137 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2138 "err=%d %s)", ret, strerror(-ret));
2139 return ret;
3f5285e8
JM		 2140
2141nla_put_failure:
6241fcb1 2142 return -ENOBUFS;
3f5285e8
JM		 2143}
2144
2145
71934751 2146static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
0194fedb
JB		 2147 int key_idx, int defkey,
2148 const u8 *seq, size_t seq_len,
2149 const u8 *key, size_t key_len)
2150{
2151 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2152 if (!key_attr)
2153 return -1;
2154
2155 if (defkey && alg == WPA_ALG_IGTK)
2156 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2157 else if (defkey)
2158 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2159
2160 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2161
d723bab4
JM		 2162 switch (alg) {
2163 case WPA_ALG_WEP:
2164 if (key_len == 5)
2aa5f847
JM		 2165 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2166 WLAN_CIPHER_SUITE_WEP40);
d723bab4 2167 else
2aa5f847
JM		 2168 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2169 WLAN_CIPHER_SUITE_WEP104);
d723bab4
JM		 2170 break;
2171 case WPA_ALG_TKIP:
2aa5f847 2172 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
d723bab4
JM		 2173 break;
2174 case WPA_ALG_CCMP:
2aa5f847 2175 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
d723bab4
JM		 2176 break;
2177 case WPA_ALG_IGTK:
2aa5f847
JM		 2178 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2179 WLAN_CIPHER_SUITE_AES_CMAC);
d723bab4
JM		 2180 break;
2181 default:
2182 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2183 "algorithm %d", __func__, alg);
0194fedb 2184 return -1;
d723bab4 2185 }
0194fedb
JB		 2186
2187 if (seq && seq_len)
2188 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2189
2190 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2191
2192 nla_nest_end(msg, key_attr);
2193
2194 return 0;
2195 nla_put_failure:
2196 return -1;
2197}
2198
c811d5bc 2199
cfaab580
ZY		 2200static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2201 struct nl_msg *msg)
2202{
2203 int i, privacy = 0;
2204 struct nlattr *nl_keys, *nl_key;
2205
2206 for (i = 0; i < 4; i++) {
2207 if (!params->wep_key[i])
2208 continue;
2209 privacy = 1;
2210 break;
2211 }
2212 if (!privacy)
2213 return 0;
2214
2215 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2216
2217 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2218 if (!nl_keys)
2219 goto nla_put_failure;
2220
2221 for (i = 0; i < 4; i++) {
2222 if (!params->wep_key[i])
2223 continue;
2224
2225 nl_key = nla_nest_start(msg, i);
2226 if (!nl_key)
2227 goto nla_put_failure;
2228
2229 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2230 params->wep_key[i]);
2231 if (params->wep_key_len[i] == 5)
2232 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2233 WLAN_CIPHER_SUITE_WEP40);
2234 else
2235 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2236 WLAN_CIPHER_SUITE_WEP104);
2237
2238 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2239
2240 if (i == params->wep_tx_keyidx)
2241 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2242
2243 nla_nest_end(msg, nl_key);
2244 }
2245 nla_nest_end(msg, nl_keys);
2246
2247 return 0;
2248
2249nla_put_failure:
2250 return -ENOBUFS;
2251}
2252
2253
c2a04078 2254static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
77339912
JM		 2255 const u8 *addr, int cmd, u16 reason_code,
2256 int local_state_change)
c2a04078
JM		 2257{
2258 int ret = -1;
2259 struct nl_msg *msg;
2260
2261 msg = nlmsg_alloc();
2262 if (!msg)
2263 return -1;
2264
2265 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2266
2267 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2268 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2269 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
77339912
JM		 2270 if (local_state_change)
2271 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
c2a04078
JM		 2272
2273 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2274 msg = NULL;
2275 if (ret) {
2276 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2277 "(%s)", ret, strerror(-ret));
2278 goto nla_put_failure;
2279 }
2280 ret = 0;
2281
2282nla_put_failure:
2283 nlmsg_free(msg);
2284 return ret;
2285}
3f5285e8
JM		 2286
2287
cfaab580
ZY		 2288static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2289 const u8 *addr, int reason_code)
2290{
2291 wpa_printf(MSG_DEBUG, "%s", __func__);
2292 drv->associated = 0;
2293 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
77339912 2294 reason_code, 0);
cfaab580
ZY		 2295}
2296
2297
3f5285e8 2298static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
c2a04078 2299 int reason_code)
3f5285e8 2300{
a2e40bb6
FF		 2301 struct i802_bss *bss = priv;
2302 struct wpa_driver_nl80211_data *drv = bss->drv;
cfaab580
ZY		 2303 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2304 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2305 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2306 drv->associated = 0;
c2a04078 2307 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
77339912 2308 reason_code, 0);
3f5285e8
JM		 2309}
2310
2311
2312static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
c2a04078 2313 int reason_code)
3f5285e8 2314{
a2e40bb6
FF		 2315 struct i802_bss *bss = priv;
2316 struct wpa_driver_nl80211_data *drv = bss->drv;
cfaab580
ZY		 2317 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2318 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2319 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2320 drv->associated = 0;
c2a04078 2321 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
77339912 2322 reason_code, 0);
3f5285e8
JM		 2323}
2324
2325
c2a04078
JM		 2326static int wpa_driver_nl80211_authenticate(
2327 void *priv, struct wpa_driver_auth_params *params)
2328{
a2e40bb6
FF		 2329 struct i802_bss *bss = priv;
2330 struct wpa_driver_nl80211_data *drv = bss->drv;
a0b2f99b 2331 int ret = -1, i;
c2a04078
JM		 2332 struct nl_msg *msg;
2333 enum nl80211_auth_type type;
6d6f4bb8 2334 int count = 0;
c2a04078
JM		 2335
2336 drv->associated = 0;
e6b8efeb 2337 os_memset(drv->auth_bssid, 0, ETH_ALEN);
af473088
JM		 2338 /* FIX: IBSS mode */
2339 if (drv->nlmode != NL80211_IFTYPE_STATION)
2340 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
c2a04078 2341
a2e40bb6 2342 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
4a867032
JM		 2343 return -1;
2344
6d6f4bb8 2345retry:
c2a04078
JM		 2346 msg = nlmsg_alloc();
2347 if (!msg)
2348 return -1;
2349
2350 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2351 drv->ifindex);
a0b2f99b 2352
0194fedb
JB		 2353 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2354 NL80211_CMD_AUTHENTICATE, 0);
2355
a0b2f99b
JM		 2356 for (i = 0; i < 4; i++) {
2357 if (!params->wep_key[i])
2358 continue;
2ea2fcc7
HS		 2359 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2360 NULL, i,
a0b2f99b
JM		 2361 i == params->wep_tx_keyidx, NULL, 0,
2362 params->wep_key[i],
2363 params->wep_key_len[i]);
0194fedb
JB		 2364 if (params->wep_tx_keyidx != i)
2365 continue;
2366 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2367 params->wep_key[i], params->wep_key_len[i])) {
2368 nlmsg_free(msg);
2369 return -1;
2370 }
a0b2f99b
JM		 2371 }
2372
c2a04078
JM		 2373 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2374 if (params->bssid) {
2375 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2376 MAC2STR(params->bssid));
2377 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2378 }
2379 if (params->freq) {
2380 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2381 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2382 }
2383 if (params->ssid) {
2384 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2385 params->ssid, params->ssid_len);
2386 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2387 params->ssid);
2388 }
2389 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2390 if (params->ie)
2391 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2392 /*
2393 * TODO: if multiple auth_alg options enabled, try them one by one if
2394 * the AP rejects authentication due to unknown auth alg
2395 */
abd9fafa 2396 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
c2a04078 2397 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 2398 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
c2a04078 2399 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 2400 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
c2a04078 2401 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 2402 else if (params->auth_alg & WPA_AUTH_ALG_FT)
c2a04078
JM		 2403 type = NL80211_AUTHTYPE_FT;
2404 else
2405 goto nla_put_failure;
2406 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2407 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
77339912
JM		 2408 if (params->local_state_change) {
2409 wpa_printf(MSG_DEBUG, " * Local state change only");
2410 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2411 }
c2a04078
JM		 2412
2413 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2414 msg = NULL;
2415 if (ret) {
2416 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2417 "(%s)", ret, strerror(-ret));
6d6f4bb8 2418 count++;
77339912
JM		 2419 if (ret == -EALREADY && count == 1 && params->bssid &&
2420 !params->local_state_change) {
6d6f4bb8
JM		 2421 /*
2422 * mac80211 does not currently accept new
2423 * authentication if we are already authenticated. As a
2424 * workaround, force deauthentication and try again.
2425 */
2426 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2427 "after forced deauthentication");
2428 wpa_driver_nl80211_deauthenticate(
5205c4f9 2429 bss, params->bssid,
6d6f4bb8
JM		 2430 WLAN_REASON_PREV_AUTH_NOT_VALID);
2431 nlmsg_free(msg);
2432 goto retry;
2433 }
c2a04078
JM		 2434 goto nla_put_failure;
2435 }
2436 ret = 0;
2437 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2438 "successfully");
2439
2440nla_put_failure:
2441 nlmsg_free(msg);
2442 return ret;
2443}
2444
2445
282d5590
JM		 2446struct phy_info_arg {
2447 u16 *num_modes;
2448 struct hostapd_hw_modes *modes;
2449};
2450
2451static int phy_info_handler(struct nl_msg *msg, void *arg)
2452{
2453 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2454 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2455 struct phy_info_arg *phy_info = arg;
2456
2457 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2458
2459 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2460 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2461 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2462 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2463 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2464 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2465 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2466 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2467 };
2468
2469 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2470 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2471 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2472 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2473 };
2474
2475 struct nlattr *nl_band;
2476 struct nlattr *nl_freq;
2477 struct nlattr *nl_rate;
2478 int rem_band, rem_freq, rem_rate;
2479 struct hostapd_hw_modes *mode;
2480 int idx, mode_is_set;
2481
2482 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2483 genlmsg_attrlen(gnlh, 0), NULL);
2484
2485 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2486 return NL_SKIP;
2487
2488 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
e62fb0a0 2489 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
282d5590
JM		 2490 if (!mode)
2491 return NL_SKIP;
2492 phy_info->modes = mode;
2493
2494 mode_is_set = 0;
2495
2496 mode = &phy_info->modes[*(phy_info->num_modes)];
2497 memset(mode, 0, sizeof(*mode));
2498 *(phy_info->num_modes) += 1;
2499
2500 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2501 nla_len(nl_band), NULL);
2502
2503 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2504 mode->ht_capab = nla_get_u16(
2505 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2506 }
2507
be8eb8ab
JM		 2508 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2509 mode->a_mpdu_params |= nla_get_u8(
2510 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2511 0x03;
2512 }
2513
2514 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2515 mode->a_mpdu_params |= nla_get_u8(
2516 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2517 2;
2518 }
2519
08eb154d
JM		 2520 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2521 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2522 u8 *mcs;
2523 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2524 os_memcpy(mode->mcs_set, mcs, 16);
2525 }
2526
282d5590
JM		 2527 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2528 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2529 nla_len(nl_freq), freq_policy);
2530 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2531 continue;
2532 mode->num_channels++;
2533 }
2534
e62fb0a0 2535 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
282d5590
JM		 2536 if (!mode->channels)
2537 return NL_SKIP;
2538
2539 idx = 0;
2540
2541 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2542 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2543 nla_len(nl_freq), freq_policy);
2544 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2545 continue;
2546
2547 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2548 mode->channels[idx].flag = 0;
2549
2550 if (!mode_is_set) {
2551 /* crude heuristic */
2552 if (mode->channels[idx].freq < 4000)
2553 mode->mode = HOSTAPD_MODE_IEEE80211B;
2554 else
2555 mode->mode = HOSTAPD_MODE_IEEE80211A;
2556 mode_is_set = 1;
2557 }
2558
2559 /* crude heuristic */
2560 if (mode->channels[idx].freq < 4000)
5a0ffb5f 2561 if (mode->channels[idx].freq == 2484)
282d5590
JM		 2562 mode->channels[idx].chan = 14;
2563 else
2564 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2565 else
2566 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2567
2568 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2569 mode->channels[idx].flag |=
2570 HOSTAPD_CHAN_DISABLED;
2571 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2572 mode->channels[idx].flag |=
2573 HOSTAPD_CHAN_PASSIVE_SCAN;
2574 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2575 mode->channels[idx].flag |=
2576 HOSTAPD_CHAN_NO_IBSS;
2577 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2578 mode->channels[idx].flag |=
2579 HOSTAPD_CHAN_RADAR;
2580
2581 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2582 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2583 mode->channels[idx].max_tx_power =
2584 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2585
2586 idx++;
2587 }
2588
2589 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2590 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2591 nla_len(nl_rate), rate_policy);
2592 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2593 continue;
2594 mode->num_rates++;
2595 }
2596
e62fb0a0 2597 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
282d5590
JM		 2598 if (!mode->rates)
2599 return NL_SKIP;
2600
2601 idx = 0;
2602
2603 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2604 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2605 nla_len(nl_rate), rate_policy);
2606 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2607 continue;
fb7842aa 2608 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
282d5590
JM		 2609
2610 /* crude heuristic */
2611 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
fb7842aa 2612 mode->rates[idx] > 200)
282d5590
JM		 2613 mode->mode = HOSTAPD_MODE_IEEE80211G;
2614
282d5590
JM		 2615 idx++;
2616 }
2617 }
2618
2619 return NL_SKIP;
2620}
2621
2622static struct hostapd_hw_modes *
2623wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2624{
2625 u16 m;
2626 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2627 int i, mode11g_idx = -1;
2628
2629 /* If only 802.11g mode is included, use it to construct matching
2630 * 802.11b mode data. */
2631
2632 for (m = 0; m < *num_modes; m++) {
2633 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2634 return modes; /* 802.11b already included */
2635 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2636 mode11g_idx = m;
2637 }
2638
2639 if (mode11g_idx < 0)
2640 return modes; /* 2.4 GHz band not supported at all */
2641
2642 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2643 if (nmodes == NULL)
2644 return modes; /* Could not add 802.11b mode */
2645
2646 mode = &nmodes[*num_modes];
2647 os_memset(mode, 0, sizeof(*mode));
2648 (*num_modes)++;
2649 modes = nmodes;
2650
2651 mode->mode = HOSTAPD_MODE_IEEE80211B;
2652
2653 mode11g = &modes[mode11g_idx];
2654 mode->num_channels = mode11g->num_channels;
2655 mode->channels = os_malloc(mode11g->num_channels *
2656 sizeof(struct hostapd_channel_data));
2657 if (mode->channels == NULL) {
2658 (*num_modes)--;
2659 return modes; /* Could not add 802.11b mode */
2660 }
2661 os_memcpy(mode->channels, mode11g->channels,
2662 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2663
2664 mode->num_rates = 0;
fb7842aa 2665 mode->rates = os_malloc(4 * sizeof(int));
282d5590
JM		 2666 if (mode->rates == NULL) {
2667 os_free(mode->channels);
2668 (*num_modes)--;
2669 return modes; /* Could not add 802.11b mode */
2670 }
2671
2672 for (i = 0; i < mode11g->num_rates; i++) {
fb7842aa
JM		 2673 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2674 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
282d5590
JM		 2675 continue;
2676 mode->rates[mode->num_rates] = mode11g->rates[i];
2677 mode->num_rates++;
2678 if (mode->num_rates == 4)
2679 break;
2680 }
2681
2682 if (mode->num_rates == 0) {
2683 os_free(mode->channels);
2684 os_free(mode->rates);
2685 (*num_modes)--;
2686 return modes; /* No 802.11b rates */
2687 }
2688
2689 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2690 "information");
2691
2692 return modes;
2693}
2694
2695
2696static struct hostapd_hw_modes *
2697wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2698{
a2e40bb6
FF		 2699 struct i802_bss *bss = priv;
2700 struct wpa_driver_nl80211_data *drv = bss->drv;
282d5590
JM		 2701 struct nl_msg *msg;
2702 struct phy_info_arg result = {
2703 .num_modes = num_modes,
2704 .modes = NULL,
2705 };
2706
2707 *num_modes = 0;
2708 *flags = 0;
2709
2710 msg = nlmsg_alloc();
2711 if (!msg)
2712 return NULL;
2713
2714 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2715 0, NL80211_CMD_GET_WIPHY, 0);
2716
2717 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2718
2719 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2720 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2721 nla_put_failure:
2722 return NULL;
2723}
2724
2725
2c2010ac
JM		 2726static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2727 const void *data, size_t len,
2728 int encrypt)
2729{
2730 __u8 rtap_hdr[] = {
2731 0x00, 0x00, /* radiotap version */
2732 0x0e, 0x00, /* radiotap length */
2733 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2734 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2735 0x00, /* padding */
2736 0x00, 0x00, /* RX and TX flags to indicate that */
2737 0x00, 0x00, /* this is the injected frame directly */
2738 };
2739 struct iovec iov[2] = {
2740 {
2741 .iov_base = &rtap_hdr,
2742 .iov_len = sizeof(rtap_hdr),
2743 },
2744 {
2745 .iov_base = (void *) data,
2746 .iov_len = len,
2747 }
2748 };
2749 struct msghdr msg = {
2750 .msg_name = NULL,
2751 .msg_namelen = 0,
2752 .msg_iov = iov,
2753 .msg_iovlen = 2,
2754 .msg_control = NULL,
2755 .msg_controllen = 0,
2756 .msg_flags = 0,
2757 };
2758
2759 if (encrypt)
2760 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2761
2762 return sendmsg(drv->monitor_sock, &msg, 0);
2763}
2764
2765
2766static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2767 size_t data_len)
2768{
a2e40bb6
FF		 2769 struct i802_bss *bss = priv;
2770 struct wpa_driver_nl80211_data *drv = bss->drv;
2c2010ac 2771 struct ieee80211_mgmt *mgmt;
7a47d567 2772 int encrypt = 1;
2c2010ac
JM		 2773 u16 fc;
2774
2775 mgmt = (struct ieee80211_mgmt *) data;
2776 fc = le_to_host16(mgmt->frame_control);
2777
2778 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2779 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2780 /*
2781 * Only one of the authentication frame types is encrypted.
2782 * In order for static WEP encryption to work properly (i.e.,
2783 * to not encrypt the frame), we need to tell mac80211 about
2784 * the frames that must not be encrypted.
2785 */
2786 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2787 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
7a47d567
JB		 2788 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2789 encrypt = 0;
2c2010ac
JM		 2790 }
2791
7a47d567 2792 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2c2010ac
JM		 2793}
2794
2795
8b897f5a 2796static int wpa_driver_nl80211_set_beacon(void *priv,
5d674872
JM		 2797 const u8 *head, size_t head_len,
2798 const u8 *tail, size_t tail_len,
2799 int dtim_period, int beacon_int)
d2440ba0 2800{
a2e40bb6
FF		 2801 struct i802_bss *bss = priv;
2802 struct wpa_driver_nl80211_data *drv = bss->drv;
d2440ba0
JM		 2803 struct nl_msg *msg;
2804 u8 cmd = NL80211_CMD_NEW_BEACON;
2805 int ret;
b4fd6fab 2806 int beacon_set;
8b897f5a 2807 int ifindex = if_nametoindex(bss->ifname);
b4fd6fab 2808
b4fd6fab 2809 beacon_set = bss->beacon_set;
d2440ba0
JM		 2810
2811 msg = nlmsg_alloc();
2812 if (!msg)
2813 return -ENOMEM;
2814
2815 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
b4fd6fab
JM		 2816 beacon_set);
2817 if (beacon_set)
d2440ba0
JM		 2818 cmd = NL80211_CMD_SET_BEACON;
2819
2820 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2821 0, cmd, 0);
2822 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2823 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
b4fd6fab 2824 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5d674872 2825 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
d2440ba0
JM		 2826 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2827
2828 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2829 if (ret) {
2830 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2831 ret, strerror(-ret));
b4fd6fab 2832 } else {
b4fd6fab 2833 bss->beacon_set = 1;
b4fd6fab 2834 }
d2440ba0
JM		 2835 return ret;
2836 nla_put_failure:
2837 return -ENOBUFS;
2838}
2839
2840
f019981a
JM		 2841static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2842 int freq, int ht_enabled,
2843 int sec_channel_offset)
1581b38b
JM		 2844{
2845 struct nl_msg *msg;
d2440ba0 2846 int ret;
1581b38b
JM		 2847
2848 msg = nlmsg_alloc();
2849 if (!msg)
2850 return -1;
2851
2852 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2853 NL80211_CMD_SET_WIPHY, 0);
2854
2855 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
f019981a
JM		 2856 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2857 if (ht_enabled) {
2858 switch (sec_channel_offset) {
2859 case -1:
2860 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2861 NL80211_CHAN_HT40MINUS);
2862 break;
2863 case 1:
2864 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2865 NL80211_CHAN_HT40PLUS);
2866 break;
2867 default:
2868 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2869 NL80211_CHAN_HT20);
2870 break;
2871 }
2872 }
1581b38b 2873
d2440ba0
JM		 2874 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2875 if (ret == 0)
1581b38b 2876 return 0;
f019981a
JM		 2877 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2878 "%d (%s)", freq, ret, strerror(-ret));
1581b38b
JM		 2879nla_put_failure:
2880 return -1;
2881}
2882
0f4e8b4f 2883
62847751 2884static int wpa_driver_nl80211_sta_add(void *priv,
0f4e8b4f
JM		 2885 struct hostapd_sta_add_params *params)
2886{
a2e40bb6
FF		 2887 struct i802_bss *bss = priv;
2888 struct wpa_driver_nl80211_data *drv = bss->drv;
0f4e8b4f
JM		 2889 struct nl_msg *msg;
2890 int ret = -ENOBUFS;
2891
2892 msg = nlmsg_alloc();
2893 if (!msg)
2894 return -ENOMEM;
2895
2896 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2897 0, NL80211_CMD_NEW_STATION, 0);
2898
62847751 2899 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
0f4e8b4f
JM		 2900 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2901 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2902 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2903 params->supp_rates);
2904 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2905 params->listen_interval);
0f4e8b4f
JM		 2906 if (params->ht_capabilities) {
2907 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
fc4e2d95
JM		 2908 sizeof(*params->ht_capabilities),
2909 params->ht_capabilities);
0f4e8b4f 2910 }
0f4e8b4f
JM		 2911
2912 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2913 if (ret)
2914 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2915 "result: %d (%s)", ret, strerror(-ret));
2916 if (ret == -EEXIST)
2917 ret = 0;
2918 nla_put_failure:
2919 return ret;
2920}
2921
2922
2923static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2924{
a2e40bb6
FF		 2925 struct i802_bss *bss = priv;
2926 struct wpa_driver_nl80211_data *drv = bss->drv;
0f4e8b4f
JM		 2927 struct nl_msg *msg;
2928 int ret;
2929
2930 msg = nlmsg_alloc();
2931 if (!msg)
2932 return -ENOMEM;
2933
2934 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2935 0, NL80211_CMD_DEL_STATION, 0);
2936
2937 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 2938 if_nametoindex(bss->ifname));
0f4e8b4f
JM		 2939 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2940
2941 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2942 if (ret == -ENOENT)
2943 return 0;
2944 return ret;
2945 nla_put_failure:
2946 return -ENOBUFS;
2947}
2948
1581b38b 2949
0915d02c
JM		 2950static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2951 int ifidx)
2952{
2953 struct nl_msg *msg;
2954
c6e8e8e4
JM		 2955 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2956
2135f224
JM		 2957#ifdef HOSTAPD
2958 /* stop listening for EAPOL on this interface */
2959 del_ifidx(drv, ifidx);
2960#endif /* HOSTAPD */
2961
0915d02c
JM		 2962 msg = nlmsg_alloc();
2963 if (!msg)
2964 goto nla_put_failure;
2965
2966 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2967 0, NL80211_CMD_DEL_INTERFACE, 0);
2968 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2969
2970 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2971 return;
2972 nla_put_failure:
e748062b 2973 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
0915d02c
JM		 2974}
2975
2976
a35187e7
KH		 2977static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2978 const char *ifname,
2979 enum nl80211_iftype iftype,
fbbfcbac 2980 const u8 *addr, int wds)
0915d02c
JM		 2981{
2982 struct nl_msg *msg, *flags = NULL;
2983 int ifidx;
2984 int ret = -ENOBUFS;
2985
2986 msg = nlmsg_alloc();
2987 if (!msg)
2988 return -1;
2989
2990 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2991 0, NL80211_CMD_NEW_INTERFACE, 0);
2992 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2993 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2994 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2995
2996 if (iftype == NL80211_IFTYPE_MONITOR) {
2997 int err;
2998
2999 flags = nlmsg_alloc();
3000 if (!flags)
3001 goto nla_put_failure;
3002
3003 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3004
3005 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3006
3007 nlmsg_free(flags);
3008
3009 if (err)
3010 goto nla_put_failure;
fbbfcbac
FF		 3011 } else if (wds) {
3012 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
0915d02c
JM		 3013 }
3014
3015 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3016 if (ret) {
3017 nla_put_failure:
a35187e7
KH		 3018 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3019 ifname, ret, strerror(-ret));
0915d02c
JM		 3020 return ret;
3021 }
3022
3023 ifidx = if_nametoindex(ifname);
c6e8e8e4
JM		 3024 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3025 ifname, ifidx);
0915d02c
JM		 3026
3027 if (ifidx <= 0)
3028 return -1;
3029
2135f224
JM		 3030#ifdef HOSTAPD
3031 /* start listening for EAPOL on this interface */
3032 add_ifidx(drv, ifidx);
7bfc47c3 3033#endif /* HOSTAPD */
2135f224 3034
7bfc47c3 3035 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2ac9688e 3036 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
41d931ee
JM		 3037 nl80211_remove_iface(drv, ifidx);
3038 return -1;
2135f224 3039 }
2135f224 3040
0915d02c
JM		 3041 return ifidx;
3042}
22a7c9d7
JM		 3043
3044
a35187e7
KH		 3045static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3046 const char *ifname, enum nl80211_iftype iftype,
fbbfcbac 3047 const u8 *addr, int wds)
a35187e7
KH		 3048{
3049 int ret;
3050
fbbfcbac 3051 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
a35187e7
KH		 3052
3053 /* if error occured and interface exists already */
3054 if (ret == -ENFILE && if_nametoindex(ifname)) {
3055 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3056
3057 /* Try to remove the interface that was already there. */
3058 nl80211_remove_iface(drv, if_nametoindex(ifname));
3059
3060 /* Try to create the interface again */
fbbfcbac
FF		 3061 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3062 wds);
a35187e7
KH		 3063 }
3064
4e5cb1a3
JM		 3065 if (ret >= 0 && drv->disable_11b_rates)
3066 nl80211_disable_11b_rates(drv, ret, 1);
3067
a35187e7
KH		 3068 return ret;
3069}
0915d02c 3070
2135f224 3071
0915d02c
JM		 3072static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3073{
3074 struct ieee80211_hdr *hdr;
f8b1f695
JM		 3075 u16 fc;
3076 union wpa_event_data event;
0915d02c
JM		 3077
3078 hdr = (struct ieee80211_hdr *) buf;
3079 fc = le_to_host16(hdr->frame_control);
3080
f8b1f695
JM		 3081 os_memset(&event, 0, sizeof(event));
3082 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3083 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3084 event.tx_status.dst = hdr->addr1;
3085 event.tx_status.data = buf;
3086 event.tx_status.data_len = len;
3087 event.tx_status.ack = ok;
3088 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
0915d02c
JM		 3089}
3090
3091
4b9841d3 3092static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
0d9fc3d8 3093 u8 *buf, size_t len)
0915d02c 3094{
f8b1f695
JM		 3095 union wpa_event_data event;
3096 os_memset(&event, 0, sizeof(event));
0d9fc3d8 3097 event.rx_from_unknown.frame = buf;
f8b1f695
JM		 3098 event.rx_from_unknown.len = len;
3099 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4b9841d3 3100}
0915d02c 3101
4b9841d3
JM		 3102
3103static void handle_frame(struct wpa_driver_nl80211_data *drv,
2a8b7416 3104 u8 *buf, size_t len, int datarate, int ssi_signal)
4b9841d3
JM		 3105{
3106 struct ieee80211_hdr *hdr;
f8b1f695
JM		 3107 u16 fc;
3108 union wpa_event_data event;
0915d02c
JM		 3109
3110 hdr = (struct ieee80211_hdr *) buf;
3111 fc = le_to_host16(hdr->frame_control);
0915d02c 3112
4b9841d3 3113 switch (WLAN_FC_GET_TYPE(fc)) {
0915d02c 3114 case WLAN_FC_TYPE_MGMT:
f8b1f695
JM		 3115 os_memset(&event, 0, sizeof(event));
3116 event.rx_mgmt.frame = buf;
3117 event.rx_mgmt.frame_len = len;
2a8b7416
JM		 3118 event.rx_mgmt.datarate = datarate;
3119 event.rx_mgmt.ssi_signal = ssi_signal;
f8b1f695 3120 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
0915d02c
JM		 3121 break;
3122 case WLAN_FC_TYPE_CTRL:
3123 /* can only get here with PS-Poll frames */
3124 wpa_printf(MSG_DEBUG, "CTRL");
0d9fc3d8 3125 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3126 break;
3127 case WLAN_FC_TYPE_DATA:
0d9fc3d8 3128 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3129 break;
3130 }
3131}
3132
3133
3134static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3135{
3136 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3137 int len;
3138 unsigned char buf[3000];
3139 struct ieee80211_radiotap_iterator iter;
3140 int ret;
2a8b7416 3141 int datarate = 0, ssi_signal = 0;
4b9841d3 3142 int injected = 0, failed = 0, rxflags = 0;
0915d02c
JM		 3143
3144 len = recv(sock, buf, sizeof(buf), 0);
3145 if (len < 0) {
3146 perror("recv");
3147 return;
3148 }
3149
504e905c
JM		 3150 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3151 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3152 "frame since Probe Request reporting is disabled");
3153 return;
3154 }
3155
0915d02c
JM		 3156 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3157 printf("received invalid radiotap frame\n");
3158 return;
3159 }
3160
0915d02c
JM		 3161 while (1) {
3162 ret = ieee80211_radiotap_iterator_next(&iter);
3163 if (ret == -ENOENT)
3164 break;
3165 if (ret) {
3166 printf("received invalid radiotap frame (%d)\n", ret);
3167 return;
3168 }
3169 switch (iter.this_arg_index) {
3170 case IEEE80211_RADIOTAP_FLAGS:
3171 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3172 len -= 4;
3173 break;
3174 case IEEE80211_RADIOTAP_RX_FLAGS:
3175 rxflags = 1;
3176 break;
3177 case IEEE80211_RADIOTAP_TX_FLAGS:
3178 injected = 1;
3179 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3180 IEEE80211_RADIOTAP_F_TX_FAIL;
3181 break;
3182 case IEEE80211_RADIOTAP_DATA_RETRIES:
3183 break;
3184 case IEEE80211_RADIOTAP_CHANNEL:
2a8b7416 3185 /* TODO: convert from freq/flags to channel number */
0915d02c
JM		 3186 break;
3187 case IEEE80211_RADIOTAP_RATE:
2a8b7416 3188 datarate = *iter.this_arg * 5;
0915d02c
JM		 3189 break;
3190 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2a8b7416 3191 ssi_signal = *iter.this_arg;
0915d02c
JM		 3192 break;
3193 }
3194 }
3195
3196 if (rxflags && injected)
3197 return;
3198
3199 if (!injected)
4b9841d3 3200 handle_frame(drv, buf + iter.max_length,
2a8b7416 3201 len - iter.max_length, datarate, ssi_signal);
0915d02c 3202 else
4b9841d3
JM		 3203 handle_tx_callback(drv->ctx, buf + iter.max_length,
3204 len - iter.max_length, !failed);
0915d02c
JM		 3205}
3206
3207
3208/*
3209 * we post-process the filter code later and rewrite
3210 * this to the offset to the last instruction
3211 */
3212#define PASS 0xFF
3213#define FAIL 0xFE
3214
3215static struct sock_filter msock_filter_insns[] = {
3216 /*
3217 * do a little-endian load of the radiotap length field
3218 */
3219 /* load lower byte into A */
3220 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3221 /* put it into X (== index register) */
3222 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3223 /* load upper byte into A */
3224 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3225 /* left-shift it by 8 */
3226 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3227 /* or with X */
3228 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3229 /* put result into X */
3230 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3231
3232 /*
3233 * Allow management frames through, this also gives us those
3234 * management frames that we sent ourselves with status
3235 */
3236 /* load the lower byte of the IEEE 802.11 frame control field */
3237 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3238 /* mask off frame type and version */
3239 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3240 /* accept frame if it's both 0, fall through otherwise */
3241 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3242
3243 /*
3244 * TODO: add a bit to radiotap RX flags that indicates
3245 * that the sending station is not associated, then
3246 * add a filter here that filters on our DA and that flag
3247 * to allow us to deauth frames to that bad station.
3248 *
3249 * Not a regression -- we didn't do it before either.
3250 */
3251
3252#if 0
3253 /*
fbbfcbac 3254 * drop non-data frames
0915d02c
JM		 3255 */
3256 /* load the lower byte of the frame control field */
3257 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3258 /* mask off QoS bit */
3259 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3260 /* drop non-data frames */
3261 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
fbbfcbac 3262#endif
0915d02c 3263 /* load the upper byte of the frame control field */
fbbfcbac 3264 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
0915d02c
JM		 3265 /* mask off toDS/fromDS */
3266 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
fbbfcbac
FF		 3267 /* accept WDS frames */
3268 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
0915d02c
JM		 3269
3270 /*
3271 * add header length to index
3272 */
3273 /* load the lower byte of the frame control field */
3274 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3275 /* mask off QoS bit */
3276 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3277 /* right shift it by 6 to give 0 or 2 */
3278 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3279 /* add data frame header length */
3280 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3281 /* add index, was start of 802.11 header */
3282 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3283 /* move to index, now start of LL header */
3284 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3285
3286 /*
3287 * Accept empty data frames, we use those for
3288 * polling activity.
3289 */
3290 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3291 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3292
3293 /*
3294 * Accept EAPOL frames
3295 */
3296 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3297 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3298 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3299 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3300
3301 /* keep these last two statements or change the code below */
3302 /* return 0 == "DROP" */
3303 BPF_STMT(BPF_RET | BPF_K, 0),
3304 /* return ~0 == "keep all" */
3305 BPF_STMT(BPF_RET | BPF_K, ~0),
3306};
3307
3308static struct sock_fprog msock_filter = {
3309 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3310 .filter = msock_filter_insns,
3311};
3312
3313
3314static int add_monitor_filter(int s)
3315{
3316 int idx;
3317
3318 /* rewrite all PASS/FAIL jump offsets */
3319 for (idx = 0; idx < msock_filter.len; idx++) {
3320 struct sock_filter *insn = &msock_filter_insns[idx];
3321
3322 if (BPF_CLASS(insn->code) == BPF_JMP) {
3323 if (insn->code == (BPF_JMP|BPF_JA)) {
3324 if (insn->k == PASS)
3325 insn->k = msock_filter.len - idx - 2;
3326 else if (insn->k == FAIL)
3327 insn->k = msock_filter.len - idx - 3;
3328 }
3329
3330 if (insn->jt == PASS)
3331 insn->jt = msock_filter.len - idx - 2;
3332 else if (insn->jt == FAIL)
3333 insn->jt = msock_filter.len - idx - 3;
3334
3335 if (insn->jf == PASS)
3336 insn->jf = msock_filter.len - idx - 2;
3337 else if (insn->jf == FAIL)
3338 insn->jf = msock_filter.len - idx - 3;
3339 }
3340 }
3341
3342 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3343 &msock_filter, sizeof(msock_filter))) {
3344 perror("SO_ATTACH_FILTER");
3345 return -1;
3346 }
3347
3348 return 0;
3349}
3350
3351
460456f8
JM		 3352static void nl80211_remove_monitor_interface(
3353 struct wpa_driver_nl80211_data *drv)
3354{
3355 if (drv->monitor_ifidx >= 0) {
3356 nl80211_remove_iface(drv, drv->monitor_ifidx);
3357 drv->monitor_ifidx = -1;
3358 }
504e905c
JM		 3359 if (drv->monitor_sock >= 0) {
3360 eloop_unregister_read_sock(drv->monitor_sock);
3361 close(drv->monitor_sock);
3362 drv->monitor_sock = -1;
3363 }
460456f8
JM		 3364}
3365
3366
0915d02c
JM		 3367static int
3368nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3369{
3370 char buf[IFNAMSIZ];
3371 struct sockaddr_ll ll;
3372 int optval;
3373 socklen_t optlen;
0915d02c 3374
a2e40bb6 3375 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
0915d02c
JM		 3376 buf[IFNAMSIZ - 1] = '\0';
3377
3378 drv->monitor_ifidx =
fbbfcbac
FF		 3379 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3380 0);
0915d02c
JM		 3381
3382 if (drv->monitor_ifidx < 0)
3383 return -1;
3384
34f2f814 3385 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
0915d02c 3386 goto error;
0915d02c
JM		 3387
3388 memset(&ll, 0, sizeof(ll));
3389 ll.sll_family = AF_PACKET;
3390 ll.sll_ifindex = drv->monitor_ifidx;
3391 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3392 if (drv->monitor_sock < 0) {
3393 perror("socket[PF_PACKET,SOCK_RAW]");
3394 goto error;
3395 }
3396
3397 if (add_monitor_filter(drv->monitor_sock)) {
3398 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3399 "interface; do filtering in user space");
3400 /* This works, but will cost in performance. */
3401 }
3402
2135f224 3403 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
0915d02c
JM		 3404 perror("monitor socket bind");
3405 goto error;
3406 }
3407
3408 optlen = sizeof(optval);
3409 optval = 20;
3410 if (setsockopt
3411 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3412 perror("Failed to set socket priority");
3413 goto error;
3414 }
3415
3416 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3417 drv, NULL)) {
3418 printf("Could not register monitor read socket\n");
3419 goto error;
3420 }
3421
3422 return 0;
3423 error:
460456f8 3424 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 3425 return -1;
3426}
3427
db149ac9
JM		 3428
3429static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3430
3431static int wpa_driver_nl80211_hapd_send_eapol(
3432 void *priv, const u8 *addr, const u8 *data,
3433 size_t data_len, int encrypt, const u8 *own_addr)
3434{
a2e40bb6
FF		 3435 struct i802_bss *bss = priv;
3436 struct wpa_driver_nl80211_data *drv = bss->drv;
db149ac9
JM		 3437 struct ieee80211_hdr *hdr;
3438 size_t len;
3439 u8 *pos;
3440 int res;
3441#if 0 /* FIX */
0de39516 3442 int qos = sta->flags & WPA_STA_WMM;
db149ac9
JM		 3443#else
3444 int qos = 0;
3445#endif
3446
3447 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3448 data_len;
3449 hdr = os_zalloc(len);
3450 if (hdr == NULL) {
3451 printf("malloc() failed for i802_send_data(len=%lu)\n",
3452 (unsigned long) len);
3453 return -1;
3454 }
3455
3456 hdr->frame_control =
3457 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3458 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3459 if (encrypt)
3460 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3461#if 0 /* To be enabled if qos determination is added above */
3462 if (qos) {
3463 hdr->frame_control |=
3464 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3465 }
3466#endif
3467
3468 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3469 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3470 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3471 pos = (u8 *) (hdr + 1);
3472
3473#if 0 /* To be enabled if qos determination is added above */
3474 if (qos) {
3475 /* add an empty QoS header if needed */
3476 pos[0] = 0;
3477 pos[1] = 0;
3478 pos += 2;
3479 }
3480#endif
3481
3482 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3483 pos += sizeof(rfc1042_header);
3484 WPA_PUT_BE16(pos, ETH_P_PAE);
3485 pos += 2;
3486 memcpy(pos, data, data_len);
3487
3488 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3489 if (res < 0) {
3490 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3491 "failed: %d (%s)",
3492 (unsigned long) len, errno, strerror(errno));
3493 }
7bf12757 3494 os_free(hdr);
db149ac9
JM		 3495
3496 return res;
3497}
3498
a8d6ffa4 3499
7e76ee9c
JM		 3500static u32 sta_flags_nl80211(int flags)
3501{
3502 u32 f = 0;
3503
0de39516 3504 if (flags & WPA_STA_AUTHORIZED)
7e76ee9c 3505 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
0de39516 3506 if (flags & WPA_STA_WMM)
7e76ee9c 3507 f |= BIT(NL80211_STA_FLAG_WME);
0de39516 3508 if (flags & WPA_STA_SHORT_PREAMBLE)
7e76ee9c 3509 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
0de39516 3510 if (flags & WPA_STA_MFP)
7e76ee9c
JM		 3511 f |= BIT(NL80211_STA_FLAG_MFP);
3512
3513 return f;
3514}
3515
3516
3234cba4
JM		 3517static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3518 int total_flags,
4c32757d 3519 int flags_or, int flags_and)
a8d6ffa4 3520{
a2e40bb6
FF		 3521 struct i802_bss *bss = priv;
3522 struct wpa_driver_nl80211_data *drv = bss->drv;
a8d6ffa4 3523 struct nl_msg *msg, *flags = NULL;
7e76ee9c 3524 struct nl80211_sta_flag_update upd;
a8d6ffa4
JM		 3525
3526 msg = nlmsg_alloc();
3527 if (!msg)
3528 return -ENOMEM;
3529
3530 flags = nlmsg_alloc();
3531 if (!flags) {
3532 nlmsg_free(msg);
3533 return -ENOMEM;
3534 }
3535
3536 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3537 0, NL80211_CMD_SET_STATION, 0);
3538
3539 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3234cba4 3540 if_nametoindex(bss->ifname));
a8d6ffa4
JM		 3541 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3542
7e76ee9c
JM		 3543 /*
3544 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3545 * can be removed eventually.
3546 */
0de39516 3547 if (total_flags & WPA_STA_AUTHORIZED)
a8d6ffa4
JM		 3548 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3549
0de39516 3550 if (total_flags & WPA_STA_WMM)
a8d6ffa4
JM		 3551 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3552
0de39516 3553 if (total_flags & WPA_STA_SHORT_PREAMBLE)
a8d6ffa4
JM		 3554 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3555
0de39516 3556 if (total_flags & WPA_STA_MFP)
a8d6ffa4
JM		 3557 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3558
3559 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3560 goto nla_put_failure;
3561
7e76ee9c
JM		 3562 os_memset(&upd, 0, sizeof(upd));
3563 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3564 upd.set = sta_flags_nl80211(flags_or);
3565 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3566
a8d6ffa4
JM		 3567 nlmsg_free(flags);
3568
3569 return send_and_recv_msgs(drv, msg, NULL, NULL);
3570 nla_put_failure:
3571 nlmsg_free(flags);
3572 return -ENOBUFS;
3573}
3574
0915d02c 3575
1581b38b
JM		 3576static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3577 struct wpa_driver_associate_params *params)
3578{
a2e40bb6 3579 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
f019981a 3580 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
460456f8 3581 nl80211_remove_monitor_interface(drv);
1581b38b 3582 return -1;
0915d02c 3583 }
1581b38b
JM		 3584
3585 /* TODO: setup monitor interface (and add code somewhere to remove this
3586 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
1581b38b
JM		 3587
3588 return 0;
3589}
1581b38b
JM		 3590
3591
5cc4d64b
JM		 3592static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3593{
3594 struct nl_msg *msg;
3595 int ret = -1;
3596
3597 msg = nlmsg_alloc();
3598 if (!msg)
3599 return -1;
3600
3601 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3602 NL80211_CMD_LEAVE_IBSS, 0);
3603 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3604 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3605 msg = NULL;
3606 if (ret) {
3607 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3608 "(%s)", ret, strerror(-ret));
3609 goto nla_put_failure;
3610 }
3611
3612 ret = 0;
3613 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3614
3615nla_put_failure:
3616 nlmsg_free(msg);
3617 return ret;
3618}
3619
3620
3621static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3622 struct wpa_driver_associate_params *params)
3623{
3624 struct nl_msg *msg;
3625 int ret = -1;
3626 int count = 0;
3627
3628 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3629
a2e40bb6 3630 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
5cc4d64b
JM		 3631 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3632 "IBSS mode");
3633 return -1;
3634 }
3635
3636retry:
3637 msg = nlmsg_alloc();
3638 if (!msg)
3639 return -1;
3640
3641 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3642 NL80211_CMD_JOIN_IBSS, 0);
3643 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3644
3645 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3646 goto nla_put_failure;
3647
3648 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3649 params->ssid, params->ssid_len);
3650 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3651 params->ssid);
3652 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3653 drv->ssid_len = params->ssid_len;
3654
3655 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3656 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3657
3658 ret = nl80211_set_conn_keys(params, msg);
3659 if (ret)
3660 goto nla_put_failure;
3661
a95795ad
JM		 3662 if (params->wpa_ie) {
3663 wpa_hexdump(MSG_DEBUG,
3664 " * Extra IEs for Beacon/Probe Response frames",
3665 params->wpa_ie, params->wpa_ie_len);
3666 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3667 params->wpa_ie);
3668 }
3669
5cc4d64b
JM		 3670 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3671 msg = NULL;
3672 if (ret) {
3673 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3674 ret, strerror(-ret));
3675 count++;
3676 if (ret == -EALREADY && count == 1) {
3677 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3678 "forced leave");
3679 nl80211_leave_ibss(drv);
3680 nlmsg_free(msg);
3681 goto retry;
3682 }
3683
3684 goto nla_put_failure;
3685 }
3686 ret = 0;
3687 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3688
3689nla_put_failure:
3690 nlmsg_free(msg);
3691 return ret;
3692}
3693
3694
cfaab580
ZY		 3695static int wpa_driver_nl80211_connect(
3696 struct wpa_driver_nl80211_data *drv,
3697 struct wpa_driver_associate_params *params)
3698{
3699 struct nl_msg *msg;
3700 enum nl80211_auth_type type;
3701 int ret = 0;
3702
3703 msg = nlmsg_alloc();
3704 if (!msg)
3705 return -1;
3706
3707 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3708 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3709 NL80211_CMD_CONNECT, 0);
3710
3711 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3712 if (params->bssid) {
3713 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3714 MAC2STR(params->bssid));
3715 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3716 }
3717 if (params->freq) {
3718 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3719 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3720 }
3721 if (params->ssid) {
3722 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3723 params->ssid, params->ssid_len);
3724 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3725 params->ssid);
3726 if (params->ssid_len > sizeof(drv->ssid))
3727 goto nla_put_failure;
3728 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3729 drv->ssid_len = params->ssid_len;
3730 }
3731 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3732 if (params->wpa_ie)
3733 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3734 params->wpa_ie);
3735
abd9fafa 3736 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
cfaab580 3737 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 3738 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
cfaab580 3739 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 3740 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
cfaab580 3741 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 3742 else if (params->auth_alg & WPA_AUTH_ALG_FT)
cfaab580
ZY		 3743 type = NL80211_AUTHTYPE_FT;
3744 else
3745 goto nla_put_failure;
3746
3747 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
3748 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3749
3750 if (params->wpa_ie && params->wpa_ie_len) {
3751 enum nl80211_wpa_versions ver;
3752
3753 if (params->wpa_ie[0] == WLAN_EID_RSN)
3754 ver = NL80211_WPA_VERSION_2;
3755 else
3756 ver = NL80211_WPA_VERSION_1;
3757
3758 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
3759 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3760 }
3761
3762 if (params->pairwise_suite != CIPHER_NONE) {
c1bb3e0a 3763 int cipher;
cfaab580
ZY		 3764
3765 switch (params->pairwise_suite) {
3766 case CIPHER_WEP40:
3767 cipher = WLAN_CIPHER_SUITE_WEP40;
3768 break;
3769 case CIPHER_WEP104:
3770 cipher = WLAN_CIPHER_SUITE_WEP104;
3771 break;
3772 case CIPHER_CCMP:
3773 cipher = WLAN_CIPHER_SUITE_CCMP;
3774 break;
3775 case CIPHER_TKIP:
3776 default:
3777 cipher = WLAN_CIPHER_SUITE_TKIP;
3778 break;
3779 }
3780 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3781 }
3782
3783 if (params->group_suite != CIPHER_NONE) {
c1bb3e0a 3784 int cipher;
cfaab580
ZY		 3785
3786 switch (params->group_suite) {
3787 case CIPHER_WEP40:
3788 cipher = WLAN_CIPHER_SUITE_WEP40;
3789 break;
3790 case CIPHER_WEP104:
3791 cipher = WLAN_CIPHER_SUITE_WEP104;
3792 break;
3793 case CIPHER_CCMP:
3794 cipher = WLAN_CIPHER_SUITE_CCMP;
3795 break;
3796 case CIPHER_TKIP:
3797 default:
3798 cipher = WLAN_CIPHER_SUITE_TKIP;
3799 break;
3800 }
3801 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3802 }
3803
3804 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3805 params->key_mgmt_suite == KEY_MGMT_PSK) {
3806 int mgmt = WLAN_AKM_SUITE_PSK;
3807
3808 switch (params->key_mgmt_suite) {
3809 case KEY_MGMT_802_1X:
3810 mgmt = WLAN_AKM_SUITE_8021X;
3811 break;
3812 case KEY_MGMT_PSK:
3813 default:
3814 mgmt = WLAN_AKM_SUITE_PSK;
3815 break;
3816 }
3817 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3818 }
3819
3820 ret = nl80211_set_conn_keys(params, msg);
3821 if (ret)
3822 goto nla_put_failure;
3823
3824 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3825 msg = NULL;
3826 if (ret) {
3827 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3828 "(%s)", ret, strerror(-ret));
3829 goto nla_put_failure;
3830 }
3831 ret = 0;
3832 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3833
3834nla_put_failure:
3835 nlmsg_free(msg);
3836 return ret;
3837
3838}
3839
3840
c2a04078
JM		 3841static int wpa_driver_nl80211_associate(
3842 void *priv, struct wpa_driver_associate_params *params)
3843{
a2e40bb6
FF		 3844 struct i802_bss *bss = priv;
3845 struct wpa_driver_nl80211_data *drv = bss->drv;
c2a04078
JM		 3846 int ret = -1;
3847 struct nl_msg *msg;
3848
5cc4d64b 3849 if (params->mode == IEEE80211_MODE_AP)
1581b38b 3850 return wpa_driver_nl80211_ap(drv, params);
1581b38b 3851
5cc4d64b
JM		 3852 if (params->mode == IEEE80211_MODE_IBSS)
3853 return wpa_driver_nl80211_ibss(drv, params);
3854
4a867032 3855 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
a2e40bb6 3856 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4a867032 3857 return -1;
cfaab580 3858 return wpa_driver_nl80211_connect(drv, params);
4a867032 3859 }
cfaab580 3860
c2a04078
JM		 3861 drv->associated = 0;
3862
3863 msg = nlmsg_alloc();
3864 if (!msg)
3865 return -1;
3866
3867 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3868 drv->ifindex);
3869 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3870 NL80211_CMD_ASSOCIATE, 0);
3871
3872 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3873 if (params->bssid) {
3874 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3875 MAC2STR(params->bssid));
3876 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3877 }
3878 if (params->freq) {
3879 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3880 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4832ecd7
JM		 3881 drv->assoc_freq = params->freq;
3882 } else
3883 drv->assoc_freq = 0;
c2a04078
JM		 3884 if (params->ssid) {
3885 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3886 params->ssid, params->ssid_len);
3887 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3888 params->ssid);
fd05d64e
JM		 3889 if (params->ssid_len > sizeof(drv->ssid))
3890 goto nla_put_failure;
3891 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3892 drv->ssid_len = params->ssid_len;
c2a04078
JM		 3893 }
3894 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3895 if (params->wpa_ie)
3896 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3897 params->wpa_ie);
3898
e572fa33
JM		 3899#ifdef CONFIG_IEEE80211W
3900 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3901 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3902#endif /* CONFIG_IEEE80211W */
3903
01652550
JM		 3904 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3905
62fa124c
JM		 3906 if (params->prev_bssid) {
3907 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
3908 MAC2STR(params->prev_bssid));
3909 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3910 params->prev_bssid);
3911 }
3912
c2a04078
JM		 3913 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3914 msg = NULL;
3915 if (ret) {
3916 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3917 "(%s)", ret, strerror(-ret));
8856462d 3918 nl80211_dump_scan(drv);
c2a04078
JM		 3919 goto nla_put_failure;
3920 }
3921 ret = 0;
3922 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3923 "successfully");
3924
3925nla_put_failure:
3926 nlmsg_free(msg);
3927 return ret;
3928}
3f5285e8
JM		 3929
3930
ad1e68e6
JM		 3931static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3932 int ifindex, int mode)
3f5285e8 3933{
3f5285e8 3934 struct nl_msg *msg;
ad1e68e6
JM		 3935 int ret = -ENOBUFS;
3936
3937 msg = nlmsg_alloc();
3938 if (!msg)
3939 return -ENOMEM;
3940
3941 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3942 0, NL80211_CMD_SET_INTERFACE, 0);
3943 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3944 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3945
3946 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3947 if (!ret)
3948 return 0;
3949nla_put_failure:
3950 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3951 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3952 return ret;
3953}
3954
3955
3956static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3957{
a2e40bb6
FF		 3958 struct i802_bss *bss = priv;
3959 struct wpa_driver_nl80211_data *drv = bss->drv;
ad1e68e6 3960 int ret = -1;
1581b38b
JM		 3961 int nlmode;
3962
3963 switch (mode) {
3964 case 0:
3965 nlmode = NL80211_IFTYPE_STATION;
3966 break;
3967 case 1:
3968 nlmode = NL80211_IFTYPE_ADHOC;
3969 break;
3970 case 2:
3971 nlmode = NL80211_IFTYPE_AP;
3972 break;
3973 default:
3974 return -1;
3975 }
3f5285e8 3976
ad1e68e6
JM		 3977 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3978 drv->nlmode = nlmode;
460456f8
JM		 3979 ret = 0;
3980 goto done;
ad1e68e6 3981 }
3f5285e8 3982
460456f8 3983 if (nlmode == drv->nlmode) {
c6e8e8e4
JM		 3984 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3985 "requested mode - ignore error");
460456f8
JM		 3986 ret = 0;
3987 goto done; /* Already in the requested mode */
3988 }
3f5285e8 3989
3f5285e8
JM		 3990 /* mac80211 doesn't allow mode changes while the device is up, so
3991 * take the device down, try to set the mode again, and bring the
3992 * device back up.
3993 */
a2e40bb6 3994 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) == 0) {
3f5285e8 3995 /* Try to set the mode again while the interface is down */
ad1e68e6 3996 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
a2e40bb6 3997 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
2135f224 3998 ret = -1;
3f5285e8
JM		 3999 }
4000
c6e8e8e4
JM		 4001 if (!ret) {
4002 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4003 "interface is down");
ad1e68e6 4004 drv->nlmode = nlmode;
c6e8e8e4 4005 }
ad1e68e6 4006
460456f8 4007done:
460456f8
JM		 4008 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4009 /* Setup additional AP mode functionality if needed */
4010 if (drv->monitor_ifidx < 0 &&
4011 nl80211_create_monitor_interface(drv))
4012 return -1;
4013 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4014 /* Remove additional AP mode functionality */
4015 nl80211_remove_monitor_interface(drv);
a2e40bb6 4016 bss->beacon_set = 0;
460456f8 4017 }
460456f8 4018
c6e8e8e4
JM		 4019 if (ret)
4020 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4021 "from %d failed", nlmode, drv->nlmode);
4022
3f5285e8
JM		 4023 return ret;
4024}
4025
4026
3f5285e8
JM		 4027static int wpa_driver_nl80211_get_capa(void *priv,
4028 struct wpa_driver_capa *capa)
4029{
a2e40bb6
FF		 4030 struct i802_bss *bss = priv;
4031 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8
JM		 4032 if (!drv->has_capability)
4033 return -1;
4034 os_memcpy(capa, &drv->capa, sizeof(*capa));
4035 return 0;
4036}
4037
4038
4039static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4040{
a2e40bb6
FF		 4041 struct i802_bss *bss = priv;
4042 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8
JM		 4043
4044 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4045 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4046 drv->operstate = state;
08063178 4047 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
e2d02c29 4048 state ? IF_OPER_UP : IF_OPER_DORMANT);
3f5285e8
JM		 4049}
4050
01652550
JM		 4051
4052static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4053{
a2e40bb6
FF		 4054 struct i802_bss *bss = priv;
4055 struct wpa_driver_nl80211_data *drv = bss->drv;
01652550
JM		 4056 struct nl_msg *msg;
4057 struct nl80211_sta_flag_update upd;
4058
4059 msg = nlmsg_alloc();
4060 if (!msg)
4061 return -ENOMEM;
4062
4063 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4064 0, NL80211_CMD_SET_STATION, 0);
4065
4066 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4067 if_nametoindex(bss->ifname));
01652550
JM		 4068 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4069
4070 os_memset(&upd, 0, sizeof(upd));
4071 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4072 if (authorized)
4073 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4074 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4075
4076 return send_and_recv_msgs(drv, msg, NULL, NULL);
4077 nla_put_failure:
4078 return -ENOBUFS;
4079}
4080
3f5285e8 4081
c5121837
JM		 4082#ifdef HOSTAPD
4083
c5121837
JM		 4084static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4085{
4086 int i;
4087 int *old;
4088
4089 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4090 ifidx);
4091 for (i = 0; i < drv->num_if_indices; i++) {
4092 if (drv->if_indices[i] == 0) {
4093 drv->if_indices[i] = ifidx;
4094 return;
4095 }
4096 }
4097
4098 if (drv->if_indices != drv->default_if_indices)
4099 old = drv->if_indices;
4100 else
4101 old = NULL;
4102
7bf12757
JM		 4103 drv->if_indices = os_realloc(old,
4104 sizeof(int) * (drv->num_if_indices + 1));
c5121837
JM		 4105 if (!drv->if_indices) {
4106 if (!old)
4107 drv->if_indices = drv->default_if_indices;
4108 else
4109 drv->if_indices = old;
4110 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4111 "interfaces");
4112 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4113 return;
4114 }
4115 drv->if_indices[drv->num_if_indices] = ifidx;
4116 drv->num_if_indices++;
4117}
4118
4119
4120static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4121{
4122 int i;
4123
4124 for (i = 0; i < drv->num_if_indices; i++) {
4125 if (drv->if_indices[i] == ifidx) {
4126 drv->if_indices[i] = 0;
4127 break;
4128 }
4129 }
4130}
4131
4132
4133static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4134{
4135 int i;
4136
4137 for (i = 0; i < drv->num_if_indices; i++)
4138 if (drv->if_indices[i] == ifidx)
4139 return 1;
4140
4141 return 0;
4142}
4143
4144
c5121837
JM		 4145static inline int min_int(int a, int b)
4146{
4147 if (a < b)
4148 return a;
4149 return b;
4150}
4151
4152
4153static int get_key_handler(struct nl_msg *msg, void *arg)
4154{
4155 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4156 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4157
4158 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4159 genlmsg_attrlen(gnlh, 0), NULL);
4160
4161 /*
4162 * TODO: validate the key index and mac address!
4163 * Otherwise, there's a race condition as soon as
4164 * the kernel starts sending key notifications.
4165 */
4166
4167 if (tb[NL80211_ATTR_KEY_SEQ])
4168 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4169 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4170 return NL_SKIP;
4171}
4172
4173
4174static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4175 int idx, u8 *seq)
4176{
a2e40bb6
FF		 4177 struct i802_bss *bss = priv;
4178 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4179 struct nl_msg *msg;
4180
4181 msg = nlmsg_alloc();
4182 if (!msg)
4183 return -ENOMEM;
4184
4185 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4186 0, NL80211_CMD_GET_KEY, 0);
4187
4188 if (addr)
4189 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4190 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4191 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4192
4193 memset(seq, 0, 6);
4194
4195 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4196 nla_put_failure:
4197 return -ENOBUFS;
4198}
4199
4200
4201static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4202 int mode)
4203{
a2e40bb6
FF		 4204 struct i802_bss *bss = priv;
4205 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4206 struct nl_msg *msg;
4207 u8 rates[NL80211_MAX_SUPP_RATES];
4208 u8 rates_len = 0;
4209 int i;
4210
4211 msg = nlmsg_alloc();
4212 if (!msg)
4213 return -ENOMEM;
4214
4215 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4216 NL80211_CMD_SET_BSS, 0);
4217
4218 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4219 rates[rates_len++] = basic_rates[i] / 5;
4220
4221 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4222
a2e40bb6 4223 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4224
4225 return send_and_recv_msgs(drv, msg, NULL, NULL);
4226 nla_put_failure:
4227 return -ENOBUFS;
4228}
4229
e3802622
JM		 4230#endif /* HOSTAPD */
4231
c5121837 4232
c5121837
JM		 4233/* Set kernel driver on given frequency (MHz) */
4234static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4235{
a2e40bb6
FF		 4236 struct i802_bss *bss = priv;
4237 struct wpa_driver_nl80211_data *drv = bss->drv;
f019981a
JM		 4238 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4239 freq->sec_channel_offset);
c5121837
JM		 4240}
4241
4242
e3802622
JM		 4243#ifdef HOSTAPD
4244
c5121837
JM		 4245static int i802_set_rts(void *priv, int rts)
4246{
a2e40bb6
FF		 4247 struct i802_bss *bss = priv;
4248 struct wpa_driver_nl80211_data *drv = bss->drv;
ad649451
JM		 4249 struct nl_msg *msg;
4250 int ret = -ENOBUFS;
4251 u32 val;
c5121837 4252
ad649451
JM		 4253 msg = nlmsg_alloc();
4254 if (!msg)
4255 return -ENOMEM;
c5121837 4256
ad649451
JM		 4257 if (rts >= 2347)
4258 val = (u32) -1;
4259 else
4260 val = rts;
c5121837 4261
ad649451
JM		 4262 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4263 0, NL80211_CMD_SET_WIPHY, 0);
4264 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4265 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4266
4267 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4268 if (!ret)
4269 return 0;
4270nla_put_failure:
4271 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4272 "%d (%s)", rts, ret, strerror(-ret));
4273 return ret;
c5121837
JM		 4274}
4275
4276
4277static int i802_set_frag(void *priv, int frag)
4278{
a2e40bb6
FF		 4279 struct i802_bss *bss = priv;
4280 struct wpa_driver_nl80211_data *drv = bss->drv;
ad649451
JM		 4281 struct nl_msg *msg;
4282 int ret = -ENOBUFS;
4283 u32 val;
c5121837 4284
ad649451
JM		 4285 msg = nlmsg_alloc();
4286 if (!msg)
4287 return -ENOMEM;
c5121837 4288
ad649451
JM		 4289 if (frag >= 2346)
4290 val = (u32) -1;
4291 else
4292 val = frag;
c5121837 4293
ad649451
JM		 4294 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4295 0, NL80211_CMD_SET_WIPHY, 0);
4296 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4297 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4298
4299 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4300 if (!ret)
4301 return 0;
4302nla_put_failure:
4303 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4304 "%d: %d (%s)", frag, ret, strerror(-ret));
4305 return ret;
c5121837
JM		 4306}
4307
4308
c5121837
JM		 4309static int i802_flush(void *priv)
4310{
a2e40bb6
FF		 4311 struct i802_bss *bss = priv;
4312 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4313 struct nl_msg *msg;
4314
4315 msg = nlmsg_alloc();
4316 if (!msg)
4317 return -1;
4318
4319 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4320 0, NL80211_CMD_DEL_STATION, 0);
4321
4322 /*
4323 * XXX: FIX! this needs to flush all VLANs too
4324 */
4325 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4326 if_nametoindex(bss->ifname));
c5121837
JM		 4327
4328 return send_and_recv_msgs(drv, msg, NULL, NULL);
4329 nla_put_failure:
4330 return -ENOBUFS;
4331}
4332
4333
4334static int get_sta_handler(struct nl_msg *msg, void *arg)
4335{
4336 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4337 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4338 struct hostap_sta_driver_data *data = arg;
4339 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4340 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4341 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4342 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4343 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4344 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4345 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4346 };
4347
4348 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4349 genlmsg_attrlen(gnlh, 0), NULL);
4350
4351 /*
4352 * TODO: validate the interface and mac address!
4353 * Otherwise, there's a race condition as soon as
4354 * the kernel starts sending station notifications.
4355 */
4356
4357 if (!tb[NL80211_ATTR_STA_INFO]) {
4358 wpa_printf(MSG_DEBUG, "sta stats missing!");
4359 return NL_SKIP;
4360 }
4361 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4362 tb[NL80211_ATTR_STA_INFO],
4363 stats_policy)) {
4364 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4365 return NL_SKIP;
4366 }
4367
4368 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4369 data->inactive_msec =
4370 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4371 if (stats[NL80211_STA_INFO_RX_BYTES])
4372 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4373 if (stats[NL80211_STA_INFO_TX_BYTES])
4374 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4375 if (stats[NL80211_STA_INFO_RX_PACKETS])
4376 data->rx_packets =
4377 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4378 if (stats[NL80211_STA_INFO_TX_PACKETS])
4379 data->tx_packets =
4380 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4381
4382 return NL_SKIP;
4383}
4384
4385static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4386 const u8 *addr)
4387{
a2e40bb6
FF		 4388 struct i802_bss *bss = priv;
4389 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4390 struct nl_msg *msg;
4391
4392 os_memset(data, 0, sizeof(*data));
4393 msg = nlmsg_alloc();
4394 if (!msg)
4395 return -ENOMEM;
4396
4397 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4398 0, NL80211_CMD_GET_STATION, 0);
4399
4400 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
a2e40bb6 4401 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4402
4403 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4404 nla_put_failure:
4405 return -ENOBUFS;
4406}
4407
4408
c5121837
JM		 4409static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4410 int cw_min, int cw_max, int burst_time)
4411{
a2e40bb6
FF		 4412 struct i802_bss *bss = priv;
4413 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4414 struct nl_msg *msg;
4415 struct nlattr *txq, *params;
4416
4417 msg = nlmsg_alloc();
4418 if (!msg)
4419 return -1;
4420
4421 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4422 0, NL80211_CMD_SET_WIPHY, 0);
4423
a2e40bb6 4424 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4425
4426 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4427 if (!txq)
4428 goto nla_put_failure;
4429
4430 /* We are only sending parameters for a single TXQ at a time */
4431 params = nla_nest_start(msg, 1);
4432 if (!params)
4433 goto nla_put_failure;
4434
4435 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4436 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4437 * 32 usec, so need to convert the value here. */
4438 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4439 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4440 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4441 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4442
4443 nla_nest_end(msg, params);
4444
4445 nla_nest_end(msg, txq);
4446
4447 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4448 return 0;
4449 nla_put_failure:
4450 return -1;
4451}
4452
4453
c5121837
JM		 4454static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4455{
a2e40bb6
FF		 4456 struct i802_bss *bss = priv;
4457 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4458 struct nl_msg *msg;
4459
4460 msg = nlmsg_alloc();
4461 if (!msg)
4462 return -ENOMEM;
4463
4464 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4465 NL80211_CMD_SET_BSS, 0);
4466
4467 if (cts >= 0)
4468 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4469 if (preamble >= 0)
4470 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4471 if (slot >= 0)
4472 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4473
a2e40bb6 4474 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4475
4476 return send_and_recv_msgs(drv, msg, NULL, NULL);
4477 nla_put_failure:
4478 return -ENOBUFS;
4479}
4480
4481
4482static int i802_set_cts_protect(void *priv, int value)
4483{
4484 return i802_set_bss(priv, value, -1, -1);
4485}
4486
4487
4488static int i802_set_preamble(void *priv, int value)
4489{
4490 return i802_set_bss(priv, -1, value, -1);
4491}
4492
4493
4494static int i802_set_short_slot_time(void *priv, int value)
4495{
4496 return i802_set_bss(priv, -1, -1, value);
4497}
4498
4499
c5121837
JM		 4500static int i802_set_sta_vlan(void *priv, const u8 *addr,
4501 const char *ifname, int vlan_id)
4502{
a2e40bb6
FF		 4503 struct i802_bss *bss = priv;
4504 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837 4505 struct nl_msg *msg;
cd1d72c1 4506 int ret = -ENOBUFS;
c5121837
JM		 4507
4508 msg = nlmsg_alloc();
4509 if (!msg)
4510 return -ENOMEM;
4511
4512 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4513 0, NL80211_CMD_SET_STATION, 0);
4514
4515 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4516 if_nametoindex(bss->ifname));
c5121837 4517 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1c766b09 4518 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
c5121837
JM		 4519 if_nametoindex(ifname));
4520
cd1d72c1
JM		 4521 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4522 if (ret < 0) {
4523 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4524 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4525 MAC2STR(addr), ifname, vlan_id, ret,
4526 strerror(-ret));
4527 }
c5121837 4528 nla_put_failure:
cd1d72c1 4529 return ret;
c5121837
JM		 4530}
4531
4532
fbbfcbac
FF		 4533static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4534{
a2e40bb6
FF		 4535 struct i802_bss *bss = priv;
4536 struct wpa_driver_nl80211_data *drv = bss->drv;
e748062b 4537 char name[IFNAMSIZ + 1];
fbbfcbac 4538
a2e40bb6 4539 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
e748062b
JM		 4540 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4541 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
fbbfcbac 4542 if (val) {
a2e40bb6 4543 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
fbbfcbac
FF		 4544 NULL, 1) < 0)
4545 return -1;
34f2f814 4546 linux_set_iface_flags(drv->ioctl_sock, name, 1);
fbbfcbac
FF		 4547 return i802_set_sta_vlan(priv, addr, name, 0);
4548 } else {
a2e40bb6 4549 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
fbbfcbac
FF		 4550 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4551 name);
4552 }
4553}
4554
4555
c5121837
JM		 4556static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4557{
4558 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4559 struct sockaddr_ll lladdr;
4560 unsigned char buf[3000];
4561 int len;
4562 socklen_t fromlen = sizeof(lladdr);
4563
4564 len = recvfrom(sock, buf, sizeof(buf), 0,
4565 (struct sockaddr *)&lladdr, &fromlen);
4566 if (len < 0) {
4567 perror("recv");
4568 return;
4569 }
4570
baac6490
JM		 4571 if (have_ifidx(drv, lladdr.sll_ifindex))
4572 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
c5121837
JM		 4573}
4574
4575
c5121837
JM		 4576static int i802_get_inact_sec(void *priv, const u8 *addr)
4577{
4578 struct hostap_sta_driver_data data;
4579 int ret;
4580
4581 data.inactive_msec = (unsigned long) -1;
4582 ret = i802_read_sta_data(priv, &data, addr);
4583 if (ret || data.inactive_msec == (unsigned long) -1)
4584 return -1;
4585 return data.inactive_msec / 1000;
4586}
4587
4588
4589static int i802_sta_clear_stats(void *priv, const u8 *addr)
4590{
4591#if 0
4592 /* TODO */
4593#endif
4594 return 0;
4595}
4596
4597
731723a5
JM		 4598static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4599 int reason)
c5121837 4600{
a2e40bb6 4601 struct i802_bss *bss = priv;
c5121837
JM		 4602 struct ieee80211_mgmt mgmt;
4603
4604 memset(&mgmt, 0, sizeof(mgmt));
4605 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4606 WLAN_FC_STYPE_DEAUTH);
4607 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4608 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4609 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4610 mgmt.u.deauth.reason_code = host_to_le16(reason);
a2e40bb6 4611 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9f324b61
JM		 4612 IEEE80211_HDRLEN +
4613 sizeof(mgmt.u.deauth));
c5121837
JM		 4614}
4615
4616
731723a5
JM		 4617static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4618 int reason)
c5121837 4619{
a2e40bb6 4620 struct i802_bss *bss = priv;
c5121837
JM		 4621 struct ieee80211_mgmt mgmt;
4622
4623 memset(&mgmt, 0, sizeof(mgmt));
4624 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4625 WLAN_FC_STYPE_DISASSOC);
4626 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4627 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4628 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4629 mgmt.u.disassoc.reason_code = host_to_le16(reason);
a2e40bb6 4630 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9f324b61
JM		 4631 IEEE80211_HDRLEN +
4632 sizeof(mgmt.u.disassoc));
c5121837
JM		 4633}
4634
4635
94627f6c
JM		 4636static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4637 const char *brname, const char *ifname)
4638{
4639 int ifindex;
4640 char in_br[IFNAMSIZ];
4641
4642 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4643 ifindex = if_nametoindex(brname);
4644 if (ifindex == 0) {
4645 /*
4646 * Bridge was configured, but the bridge device does
4647 * not exist. Try to add it now.
4648 */
4649 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4650 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4651 "bridge interface %s: %s",
4652 brname, strerror(errno));
4653 return -1;
4654 }
4655 drv->added_bridge = 1;
4656 add_ifidx(drv, if_nametoindex(brname));
4657 }
4658
4659 if (linux_br_get(in_br, ifname) == 0) {
4660 if (os_strcmp(in_br, brname) == 0)
4661 return 0; /* already in the bridge */
4662
4663 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4664 "bridge %s", ifname, in_br);
4665 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4666 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4667 "remove interface %s from bridge "
4668 "%s: %s",
4669 ifname, brname, strerror(errno));
4670 return -1;
4671 }
4672 }
4673
4674 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4675 ifname, brname);
4676 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4677 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4678 "into bridge %s: %s",
4679 ifname, brname, strerror(errno));
4680 return -1;
4681 }
4682 drv->added_if_into_bridge = 1;
4683
4684 return 0;
4685}
4686
4687
92f475b4
JM		 4688static void *i802_init(struct hostapd_data *hapd,
4689 struct wpa_init_params *params)
c5121837
JM		 4690{
4691 struct wpa_driver_nl80211_data *drv;
a2e40bb6 4692 struct i802_bss *bss;
c5121837 4693 size_t i;
94627f6c
JM		 4694 char brname[IFNAMSIZ];
4695 int ifindex, br_ifindex;
4696 int br_added = 0;
c5121837 4697
a2e40bb6
FF		 4698 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4699 if (bss == NULL)
c5121837 4700 return NULL;
c5121837 4701
a2e40bb6 4702 drv = bss->drv;
94627f6c
JM		 4703 if (linux_br_get(brname, params->ifname) == 0) {
4704 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4705 params->ifname, brname);
4706 br_ifindex = if_nametoindex(brname);
4707 } else {
4708 brname[0] = '\0';
4709 br_ifindex = 0;
4710 }
4711
c5121837
JM		 4712 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4713 drv->if_indices = drv->default_if_indices;
92f475b4 4714 for (i = 0; i < params->num_bridge; i++) {
94627f6c
JM		 4715 if (params->bridge[i]) {
4716 ifindex = if_nametoindex(params->bridge[i]);
4717 if (ifindex)
4718 add_ifidx(drv, ifindex);
4719 if (ifindex == br_ifindex)
4720 br_added = 1;
4721 }
c5121837 4722 }
94627f6c
JM		 4723 if (!br_added && br_ifindex &&
4724 (params->num_bridge == 0 || !params->bridge[0]))
4725 add_ifidx(drv, br_ifindex);
c5121837 4726
ad1e68e6
JM		 4727 /* start listening for EAPOL on the default AP interface */
4728 add_ifidx(drv, drv->ifindex);
4729
a2e40bb6 4730 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
6980c191 4731 goto failed;
ad1e68e6 4732
6980c191 4733 if (params->bssid) {
a2e40bb6 4734 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
2ac9688e 4735 params->bssid))
460456f8
JM		 4736 goto failed;
4737 }
ad1e68e6 4738
a2e40bb6 4739 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
ad1e68e6 4740 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
a2e40bb6 4741 "into AP mode", bss->ifname);
bbaf0837 4742 goto failed;
ad1e68e6
JM		 4743 }
4744
94627f6c
JM		 4745 if (params->num_bridge && params->bridge[0] &&
4746 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
4747 goto failed;
4748
a2e40bb6 4749 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
bbaf0837 4750 goto failed;
ad1e68e6
JM		 4751
4752 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4753 if (drv->eapol_sock < 0) {
4754 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
bbaf0837 4755 goto failed;
ad1e68e6
JM		 4756 }
4757
4758 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4759 {
4760 printf("Could not register read socket for eapol\n");
c5121837 4761 goto failed;
ad1e68e6
JM		 4762 }
4763
a2e40bb6 4764 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
bbaf0837 4765 goto failed;
c5121837 4766
a2e40bb6 4767 return bss;
c5121837
JM		 4768
4769failed:
460456f8 4770 nl80211_remove_monitor_interface(drv);
c5121837
JM		 4771 if (drv->ioctl_sock >= 0)
4772 close(drv->ioctl_sock);
c5121837
JM		 4773
4774 genl_family_put(drv->nl80211);
4775 nl_cache_free(drv->nl_cache);
4776 nl_handle_destroy(drv->nl_handle);
4777 nl_cb_put(drv->nl_cb);
4778
bbaf0837
JM		 4779 os_free(drv);
4780 return NULL;
4781}
c5121837 4782
c5121837 4783
bbaf0837
JM		 4784static void i802_deinit(void *priv)
4785{
4786 wpa_driver_nl80211_deinit(priv);
c5121837
JM		 4787}
4788
4789#endif /* HOSTAPD */
4790
4791
22a7c9d7
JM		 4792static enum nl80211_iftype wpa_driver_nl80211_if_type(
4793 enum wpa_driver_if_type type)
4794{
4795 switch (type) {
4796 case WPA_IF_STATION:
4797 return NL80211_IFTYPE_STATION;
4798 case WPA_IF_AP_VLAN:
4799 return NL80211_IFTYPE_AP_VLAN;
4800 case WPA_IF_AP_BSS:
4801 return NL80211_IFTYPE_AP;
4802 }
4803 return -1;
4804}
4805
4806
7ab68865 4807static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
8043e725 4808 const char *ifname, const u8 *addr,
f3585c8a
JM		 4809 void *bss_ctx, void **drv_priv,
4810 char *force_ifname, u8 *if_addr)
22a7c9d7 4811{
a2e40bb6
FF		 4812 struct i802_bss *bss = priv;
4813 struct wpa_driver_nl80211_data *drv = bss->drv;
22a7c9d7
JM		 4814 int ifidx;
4815#ifdef HOSTAPD
a2e40bb6 4816 struct i802_bss *new_bss = NULL;
22a7c9d7
JM		 4817
4818 if (type == WPA_IF_AP_BSS) {
a2e40bb6
FF		 4819 new_bss = os_zalloc(sizeof(*new_bss));
4820 if (new_bss == NULL)
22a7c9d7
JM		 4821 return -1;
4822 }
4823#endif /* HOSTAPD */
4824
f3585c8a
JM		 4825 if (addr)
4826 os_memcpy(if_addr, addr, ETH_ALEN);
22a7c9d7 4827 ifidx = nl80211_create_iface(drv, ifname,
fbbfcbac
FF		 4828 wpa_driver_nl80211_if_type(type), addr,
4829 0);
22a7c9d7
JM		 4830 if (ifidx < 0) {
4831#ifdef HOSTAPD
a2e40bb6 4832 os_free(new_bss);
22a7c9d7
JM		 4833#endif /* HOSTAPD */
4834 return -1;
4835 }
4836
f3585c8a
JM		 4837 if (!addr &&
4838 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
4839 return -1;
4840
22a7c9d7
JM		 4841#ifdef HOSTAPD
4842 if (type == WPA_IF_AP_BSS) {
34f2f814
JM		 4843 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
4844 nl80211_remove_iface(drv, ifidx);
07179987 4845 os_free(new_bss);
22a7c9d7
JM		 4846 return -1;
4847 }
a2e40bb6
FF		 4848 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
4849 new_bss->ifindex = ifidx;
4850 new_bss->drv = drv;
4851 new_bss->next = drv->first_bss.next;
4852 drv->first_bss.next = new_bss;
4853 if (drv_priv)
4854 *drv_priv = new_bss;
22a7c9d7
JM		 4855 }
4856#endif /* HOSTAPD */
4857
4858 return 0;
4859}
4860
4861
4862static int wpa_driver_nl80211_if_remove(void *priv,
4863 enum wpa_driver_if_type type,
4864 const char *ifname)
4865{
a2e40bb6
FF		 4866 struct i802_bss *bss = priv;
4867 struct wpa_driver_nl80211_data *drv = bss->drv;
22a7c9d7
JM		 4868 int ifindex = if_nametoindex(ifname);
4869
e748062b
JM		 4870 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
4871 __func__, type, ifname, ifindex);
4872 if (ifindex <= 0)
4873 return -1;
22a7c9d7
JM		 4874 nl80211_remove_iface(drv, ifindex);
4875
4876#ifdef HOSTAPD
a2e40bb6
FF		 4877 if (type != WPA_IF_AP_BSS)
4878 return 0;
4879
4880 if (bss != &drv->first_bss) {
4881 struct i802_bss *tbss = &drv->first_bss;
4882
4883 while (tbss) {
4884 if (tbss->next != bss)
4885 continue;
4886
4887 tbss->next = bss->next;
4888 os_free(bss);
4889 break;
22a7c9d7
JM		 4890 }
4891 }
4892#endif /* HOSTAPD */
4893
4894 return 0;
4895}
4896
4897
55777702
JM		 4898static int cookie_handler(struct nl_msg *msg, void *arg)
4899{
4900 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4901 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4902 u64 *cookie = arg;
4903 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4904 genlmsg_attrlen(gnlh, 0), NULL);
4905 if (tb[NL80211_ATTR_COOKIE])
4906 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4907 return NL_SKIP;
4908}
4909
4910
58f6fbe0
JM		 4911static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
4912 const u8 *dst, const u8 *src,
4913 const u8 *bssid,
4914 const u8 *data, size_t data_len)
4915{
a2e40bb6
FF		 4916 struct i802_bss *bss = priv;
4917 struct wpa_driver_nl80211_data *drv = bss->drv;
58f6fbe0
JM		 4918 int ret = -1;
4919 struct nl_msg *msg;
4920 u8 *buf;
4921 struct ieee80211_hdr *hdr;
4922 u64 cookie;
4923
4924 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
4925 drv->ifindex);
4926
4927 buf = os_zalloc(24 + data_len);
4928 if (buf == NULL)
4929 return ret;
4930 os_memcpy(buf + 24, data, data_len);
4931 hdr = (struct ieee80211_hdr *) buf;
4932 hdr->frame_control =
4933 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
4934 os_memcpy(hdr->addr1, dst, ETH_ALEN);
4935 os_memcpy(hdr->addr2, src, ETH_ALEN);
4936 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
4937
4938 if (drv->nlmode == NL80211_IFTYPE_AP) {
4939 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
4940 os_free(buf);
4941 return ret;
4942 }
4943
4944 msg = nlmsg_alloc();
f8bf1421
JM		 4945 if (!msg) {
4946 os_free(buf);
58f6fbe0 4947 return -1;
f8bf1421 4948 }
58f6fbe0
JM		 4949
4950 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4951 NL80211_CMD_ACTION, 0);
4952
4953 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4954 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4955 NLA_PUT(msg, NL80211_ATTR_FRAME, 24 + data_len, buf);
4956 os_free(buf);
f8bf1421 4957 buf = NULL;
58f6fbe0
JM		 4958
4959 cookie = 0;
4960 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4961 msg = NULL;
4962 if (ret) {
4963 wpa_printf(MSG_DEBUG, "nl80211: Action command failed: ret=%d "
4964 "(%s)", ret, strerror(-ret));
4965 goto nla_put_failure;
4966 }
4967 wpa_printf(MSG_DEBUG, "nl80211: Action TX command accepted; "
4968 "cookie 0x%llx", (long long unsigned int) cookie);
4969 drv->send_action_cookie = cookie;
4970 drv->pending_send_action = 1;
4971 ret = 0;
4972
4973nla_put_failure:
f8bf1421 4974 os_free(buf);
58f6fbe0
JM		 4975 nlmsg_free(msg);
4976 return ret;
4977}
4978
4979
55777702
JM		 4980static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4981 unsigned int duration)
4982{
a2e40bb6
FF		 4983 struct i802_bss *bss = priv;
4984 struct wpa_driver_nl80211_data *drv = bss->drv;
55777702
JM		 4985 struct nl_msg *msg;
4986 int ret;
4987 u64 cookie;
4988
4989 msg = nlmsg_alloc();
4990 if (!msg)
4991 return -1;
4992
4993 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4994 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4995
4996 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4997 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4998 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4999
5000 cookie = 0;
5001 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5002 if (ret == 0) {
5003 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5004 "0x%llx for freq=%u MHz duration=%u",
5005 (long long unsigned int) cookie, freq, duration);
5006 drv->remain_on_chan_cookie = cookie;
5007 return 0;
5008 }
5009 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
5010 "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
5011nla_put_failure:
5012 return -1;
5013}
5014
5015
5016static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5017{
a2e40bb6
FF		 5018 struct i802_bss *bss = priv;
5019 struct wpa_driver_nl80211_data *drv = bss->drv;
55777702
JM		 5020 struct nl_msg *msg;
5021 int ret;
5022
5023 if (!drv->pending_remain_on_chan) {
5024 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5025 "to cancel");
5026 return -1;
5027 }
5028
5029 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5030 "0x%llx",
5031 (long long unsigned int) drv->remain_on_chan_cookie);
5032
5033 msg = nlmsg_alloc();
5034 if (!msg)
5035 return -1;
5036
5037 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5038 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5039
5040 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5041 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5042
5043 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5044 if (ret == 0)
5045 return 0;
5046 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5047 "%d (%s)", ret, strerror(-ret));
5048nla_put_failure:
5049 return -1;
5050}
5051
5052
504e905c
JM		 5053static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5054 void *timeout_ctx)
5055{
5056 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5057 if (drv->monitor_ifidx < 0)
5058 return; /* monitor interface already removed */
5059
5060 if (drv->nlmode != NL80211_IFTYPE_STATION)
5061 return; /* not in station mode anymore */
5062
5063 if (drv->probe_req_report)
5064 return; /* reporting enabled */
5065
5066 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5067 "Probe Request reporting needed anymore");
5068 nl80211_remove_monitor_interface(drv);
5069}
5070
5071
5072static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5073{
a2e40bb6
FF		 5074 struct i802_bss *bss = priv;
5075 struct wpa_driver_nl80211_data *drv = bss->drv;
504e905c
JM		 5076
5077 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5078 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5079 "allowed in station mode (iftype=%d)",
5080 drv->nlmode);
5081 return -1;
5082 }
5083 drv->probe_req_report = report;
5084
5085 if (report) {
5086 eloop_cancel_timeout(
5087 wpa_driver_nl80211_probe_req_report_timeout,
5088 drv, NULL);
5089 if (drv->monitor_ifidx < 0 &&
5090 nl80211_create_monitor_interface(drv))
5091 return -1;
5092 } else {
5093 /*
5094 * It takes a while to remove the monitor interface, so try to
5095 * avoid doing this if it is needed again shortly. Instead,
5096 * schedule the interface to be removed later if no need for it
5097 * is seen.
5098 */
5099 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5100 "to be removed after 10 seconds of no use");
5101 eloop_register_timeout(
5102 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5103 drv, NULL);
5104 }
5105
5106 return 0;
5107}
5108
5109
4e5cb1a3
JM		 5110static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5111 int ifindex, int disabled)
5112{
5113 struct nl_msg *msg;
5114 struct nlattr *bands, *band;
5115 int ret;
5116
5117 msg = nlmsg_alloc();
5118 if (!msg)
5119 return -1;
5120
5121 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5122 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5123 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5124
5125 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5126 if (!bands)
5127 goto nla_put_failure;
5128
5129 /*
5130 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5131 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5132 * rates. All 5 GHz rates are left enabled.
5133 */
5134 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5135 if (!band)
5136 goto nla_put_failure;
5137 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5138 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5139 nla_nest_end(msg, band);
5140
5141 nla_nest_end(msg, bands);
5142
5143 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5144 msg = NULL;
5145 if (ret) {
5146 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5147 "(%s)", ret, strerror(-ret));
5148 }
5149
5150 return ret;
5151
5152nla_put_failure:
5153 nlmsg_free(msg);
5154 return -1;
5155}
5156
5157
5158static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5159{
a2e40bb6
FF		 5160 struct i802_bss *bss = priv;
5161 struct wpa_driver_nl80211_data *drv = bss->drv;
4e5cb1a3
JM		 5162 drv->disable_11b_rates = disabled;
5163 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5164}
5165
5166
af473088
JM		 5167static int wpa_driver_nl80211_deinit_ap(void *priv)
5168{
a2e40bb6
FF		 5169 struct i802_bss *bss = priv;
5170 struct wpa_driver_nl80211_data *drv = bss->drv;
af473088
JM		 5171 if (drv->nlmode != NL80211_IFTYPE_AP)
5172 return -1;
5173 wpa_driver_nl80211_del_beacon(drv);
a2e40bb6 5174 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
af473088
JM		 5175}
5176
5177
207ef3fb
JM		 5178static void wpa_driver_nl80211_resume(void *priv)
5179{
a2e40bb6
FF		 5180 struct i802_bss *bss = priv;
5181 struct wpa_driver_nl80211_data *drv = bss->drv;
5182 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
207ef3fb
JM		 5183 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5184 "resume event");
5185 }
5186}
5187
5188
7b90c16a
JM		 5189static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5190 const u8 *ies, size_t ies_len)
5191{
5192 struct i802_bss *bss = priv;
5193 struct wpa_driver_nl80211_data *drv = bss->drv;
5194 int ret;
5195 u8 *data, *pos;
5196 size_t data_len;
5197 u8 own_addr[ETH_ALEN];
5198
5199 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5200 return -1;
5201
5202 if (action != 1) {
5203 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5204 "action %d", action);
5205 return -1;
5206 }
5207
5208 /*
5209 * Action frame payload:
5210 * Category[1] = 6 (Fast BSS Transition)
5211 * Action[1] = 1 (Fast BSS Transition Request)
5212 * STA Address
5213 * Target AP Address
5214 * FT IEs
5215 */
5216
73fc617d
JM		 5217 data_len = 2 + 2 * ETH_ALEN + ies_len;
5218 data = os_malloc(data_len);
7b90c16a
JM		 5219 if (data == NULL)
5220 return -1;
5221 pos = data;
5222 *pos++ = 0x06; /* FT Action category */
5223 *pos++ = action;
5224 os_memcpy(pos, own_addr, ETH_ALEN);
5225 pos += ETH_ALEN;
5226 os_memcpy(pos, target_ap, ETH_ALEN);
5227 pos += ETH_ALEN;
5228 os_memcpy(pos, ies, ies_len);
5229
5230 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5231 own_addr, drv->bssid,
5232 data, data_len);
5233 os_free(data);
5234
5235 return ret;
5236}
5237
5238
b625473c
JM		 5239static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5240{
5241 struct i802_bss *bss = priv;
5242 struct wpa_driver_nl80211_data *drv = bss->drv;
5243 struct nl_msg *msg, *cqm = NULL;
5244
5245 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5246 "hysteresis=%d", threshold, hysteresis);
5247
5248 msg = nlmsg_alloc();
5249 if (!msg)
5250 return -1;
5251
5252 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5253 0, NL80211_CMD_SET_CQM, 0);
5254
5255 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5256
5257 cqm = nlmsg_alloc();
5258 if (cqm == NULL)
5259 return -1;
5260
5261 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5262 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5263 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5264
5265 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5266 return 0;
5267 msg = NULL;
5268
5269nla_put_failure:
5270 if (cqm)
5271 nlmsg_free(cqm);
5272 nlmsg_free(msg);
5273 return -1;
5274}
5275
5276
b91ab76e
JM		 5277static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5278 int encrypt)
5279{
5280 struct i802_bss *bss = priv;
5281 struct wpa_driver_nl80211_data *drv = bss->drv;
5282 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5283}
5284
5285
3f5285e8
JM		 5286const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5287 .name = "nl80211",
5288 .desc = "Linux nl80211/cfg80211",
5289 .get_bssid = wpa_driver_nl80211_get_bssid,
5290 .get_ssid = wpa_driver_nl80211_get_ssid,
3f5285e8 5291 .set_key = wpa_driver_nl80211_set_key,
6a1063e0 5292 .scan2 = wpa_driver_nl80211_scan,
3f5285e8
JM		 5293 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5294 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5295 .disassociate = wpa_driver_nl80211_disassociate,
c2a04078 5296 .authenticate = wpa_driver_nl80211_authenticate,
3f5285e8 5297 .associate = wpa_driver_nl80211_associate,
3f5285e8
JM		 5298 .init = wpa_driver_nl80211_init,
5299 .deinit = wpa_driver_nl80211_deinit,
3f5285e8
JM		 5300 .get_capa = wpa_driver_nl80211_get_capa,
5301 .set_operstate = wpa_driver_nl80211_set_operstate,
01652550 5302 .set_supp_port = wpa_driver_nl80211_set_supp_port,
6d158490 5303 .set_country = wpa_driver_nl80211_set_country,
d2440ba0 5304 .set_beacon = wpa_driver_nl80211_set_beacon,
22a7c9d7
JM		 5305 .if_add = wpa_driver_nl80211_if_add,
5306 .if_remove = wpa_driver_nl80211_if_remove,
071f8ac4 5307 .send_mlme = wpa_driver_nl80211_send_mlme,
c3965310 5308 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
0f4e8b4f
JM		 5309 .sta_add = wpa_driver_nl80211_sta_add,
5310 .sta_remove = wpa_driver_nl80211_sta_remove,
db149ac9 5311 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
a8d6ffa4 5312 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
c5121837
JM		 5313#ifdef HOSTAPD
5314 .hapd_init = i802_init,
c5121837 5315 .hapd_deinit = i802_deinit,
c5121837
JM		 5316 .get_seqnum = i802_get_seqnum,
5317 .flush = i802_flush,
5318 .read_sta_data = i802_read_sta_data,
c5121837
JM		 5319 .sta_deauth = i802_sta_deauth,
5320 .sta_disassoc = i802_sta_disassoc,
c5121837
JM		 5321 .get_inact_sec = i802_get_inact_sec,
5322 .sta_clear_stats = i802_sta_clear_stats,
c5121837
JM		 5323 .set_rts = i802_set_rts,
5324 .set_frag = i802_set_frag,
c5121837 5325 .set_rate_sets = i802_set_rate_sets,
c5121837
JM		 5326 .set_cts_protect = i802_set_cts_protect,
5327 .set_preamble = i802_set_preamble,
5328 .set_short_slot_time = i802_set_short_slot_time,
5329 .set_tx_queue_params = i802_set_tx_queue_params,
c5121837 5330 .set_sta_vlan = i802_set_sta_vlan,
fbbfcbac 5331 .set_wds_sta = i802_set_wds_sta,
c5121837 5332#endif /* HOSTAPD */
e3802622 5333 .set_freq = i802_set_freq,
58f6fbe0 5334 .send_action = wpa_driver_nl80211_send_action,
55777702
JM		 5335 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5336 .cancel_remain_on_channel =
5337 wpa_driver_nl80211_cancel_remain_on_channel,
504e905c 5338 .probe_req_report = wpa_driver_nl80211_probe_req_report,
4e5cb1a3 5339 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
af473088 5340 .deinit_ap = wpa_driver_nl80211_deinit_ap,
207ef3fb 5341 .resume = wpa_driver_nl80211_resume,
7b90c16a 5342 .send_ft_action = nl80211_send_ft_action,
b625473c 5343 .signal_monitor = nl80211_signal_monitor,
b91ab76e 5344 .send_frame = nl80211_send_frame,
3f5285e8 5345};
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