1 /*
2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009-2010, Atheros Communications
8 *
9 * This software may be distributed under the terms of the BSD license.
10 * See README for more details.
11 */
13 #include "includes.h"
14 #include <sys/ioctl.h>
15 #include <sys/types.h>
16 #include <sys/stat.h>
17 #include <fcntl.h>
18 #include <net/if.h>
19 #include <netlink/genl/genl.h>
20 #include <netlink/genl/family.h>
21 #include <netlink/genl/ctrl.h>
22 #include <linux/rtnetlink.h>
23 #include <netpacket/packet.h>
24 #include <linux/filter.h>
25 #include <linux/errqueue.h>
26 #include "nl80211_copy.h"
28 #include "common.h"
29 #include "eloop.h"
30 #include "utils/list.h"
31 #include "common/ieee802_11_defs.h"
32 #include "common/ieee802_11_common.h"
33 #include "l2_packet/l2_packet.h"
34 #include "netlink.h"
35 #include "linux_ioctl.h"
36 #include "radiotap.h"
37 #include "radiotap_iter.h"
38 #include "rfkill.h"
39 #include "driver.h"
41 #ifndef SO_WIFI_STATUS
42 # if defined(__sparc__)
43 # define SO_WIFI_STATUS 0x0025
44 # elif defined(__parisc__)
45 # define SO_WIFI_STATUS 0x4022
46 # else
47 # define SO_WIFI_STATUS 41
48 # endif
50 # define SCM_WIFI_STATUS SO_WIFI_STATUS
51 #endif
53 #ifndef SO_EE_ORIGIN_TXSTATUS
54 #define SO_EE_ORIGIN_TXSTATUS 4
55 #endif
57 #ifndef PACKET_TX_TIMESTAMP
58 #define PACKET_TX_TIMESTAMP 16
59 #endif
61 #ifdef ANDROID
62 #include "android_drv.h"
63 #endif /* ANDROID */
64 #ifdef CONFIG_LIBNL20
65 /* libnl 2.0 compatibility code */
66 #define nl_handle nl_sock
67 #define nl80211_handle_alloc nl_socket_alloc_cb
68 #define nl80211_handle_destroy nl_socket_free
69 #else
70 /*
71 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
72 * but when you free a socket again it will mess up its bitmap and
73 * and use the wrong number the next time it needs a socket ID.
74 * Therefore, we wrap the handle alloc/destroy and add our own pid
75 * accounting.
76 */
77 static uint32_t port_bitmap[32] = { 0 };
79 static struct nl_handle *nl80211_handle_alloc(void *cb)
80 {
81 struct nl_handle *handle;
82 uint32_t pid = getpid() & 0x3FFFFF;
83 int i;
85 handle = nl_handle_alloc_cb(cb);
87 for (i = 0; i < 1024; i++) {
88 if (port_bitmap[i / 32] & (1 << (i % 32)))
89 continue;
90 port_bitmap[i / 32] |= 1 << (i % 32);
91 pid += i << 22;
92 break;
93 }
95 nl_socket_set_local_port(handle, pid);
97 return handle;
98 }
100 static void nl80211_handle_destroy(struct nl_handle *handle)
101 {
102 uint32_t port = nl_socket_get_local_port(handle);
104 port >>= 22;
105 port_bitmap[port / 32] &= ~(1 << (port % 32));
107 nl_handle_destroy(handle);
108 }
109 #endif /* CONFIG_LIBNL20 */
112 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
113 {
114 struct nl_handle *handle;
116 handle = nl80211_handle_alloc(cb);
117 if (handle == NULL) {
118 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
119 "callbacks (%s)", dbg);
120 return NULL;
121 }
123 if (genl_connect(handle)) {
124 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
125 "netlink (%s)", dbg);
126 nl80211_handle_destroy(handle);
127 return NULL;
128 }
130 return handle;
131 }
134 static void nl_destroy_handles(struct nl_handle **handle)
135 {
136 if (*handle == NULL)
137 return;
138 nl80211_handle_destroy(*handle);
139 *handle = NULL;
140 }
143 #ifndef IFF_LOWER_UP
144 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
145 #endif
146 #ifndef IFF_DORMANT
147 #define IFF_DORMANT 0x20000 /* driver signals dormant */
148 #endif
150 #ifndef IF_OPER_DORMANT
151 #define IF_OPER_DORMANT 5
152 #endif
153 #ifndef IF_OPER_UP
154 #define IF_OPER_UP 6
155 #endif
157 struct nl80211_global {
158 struct dl_list interfaces;
159 int if_add_ifindex;
160 struct netlink_data *netlink;
161 struct nl_cb *nl_cb;
162 struct nl_handle *nl;
163 int nl80211_id;
164 int ioctl_sock; /* socket for ioctl() use */
166 struct nl_handle *nl_event;
167 };
169 struct nl80211_wiphy_data {
170 struct dl_list list;
171 struct dl_list bsss;
172 struct dl_list drvs;
174 struct nl_handle *nl_beacons;
175 struct nl_cb *nl_cb;
177 int wiphy_idx;
178 };
180 static void nl80211_global_deinit(void *priv);
181 static void wpa_driver_nl80211_deinit(void *priv);
183 struct i802_bss {
184 struct wpa_driver_nl80211_data *drv;
185 struct i802_bss *next;
186 int ifindex;
187 char ifname[IFNAMSIZ + 1];
188 char brname[IFNAMSIZ];
189 unsigned int beacon_set:1;
190 unsigned int added_if_into_bridge:1;
191 unsigned int added_bridge:1;
193 u8 addr[ETH_ALEN];
195 int freq;
197 struct nl_handle *nl_preq, *nl_mgmt;
198 struct nl_cb *nl_cb;
200 struct nl80211_wiphy_data *wiphy_data;
201 struct dl_list wiphy_list;
202 };
204 struct wpa_driver_nl80211_data {
205 struct nl80211_global *global;
206 struct dl_list list;
207 struct dl_list wiphy_list;
208 char phyname[32];
209 void *ctx;
210 int ifindex;
211 int if_removed;
212 int if_disabled;
213 int ignore_if_down_event;
214 struct rfkill_data *rfkill;
215 struct wpa_driver_capa capa;
216 int has_capability;
218 int operstate;
220 int scan_complete_events;
222 struct nl_cb *nl_cb;
224 u8 auth_bssid[ETH_ALEN];
225 u8 bssid[ETH_ALEN];
226 int associated;
227 u8 ssid[32];
228 size_t ssid_len;
229 enum nl80211_iftype nlmode;
230 enum nl80211_iftype ap_scan_as_station;
231 unsigned int assoc_freq;
233 int monitor_sock;
234 int monitor_ifidx;
235 int monitor_refcount;
237 unsigned int disabled_11b_rates:1;
238 unsigned int pending_remain_on_chan:1;
239 unsigned int in_interface_list:1;
240 unsigned int device_ap_sme:1;
241 unsigned int poll_command_supported:1;
242 unsigned int data_tx_status:1;
243 unsigned int scan_for_auth:1;
244 unsigned int retry_auth:1;
245 unsigned int use_monitor:1;
247 u64 remain_on_chan_cookie;
248 u64 send_action_cookie;
250 unsigned int last_mgmt_freq;
252 struct wpa_driver_scan_filter *filter_ssids;
253 size_t num_filter_ssids;
255 struct i802_bss first_bss;
257 int eapol_tx_sock;
259 #ifdef HOSTAPD
260 int eapol_sock; /* socket for EAPOL frames */
262 int default_if_indices[16];
263 int *if_indices;
264 int num_if_indices;
266 int last_freq;
267 int last_freq_ht;
268 #endif /* HOSTAPD */
270 /* From failed authentication command */
271 int auth_freq;
272 u8 auth_bssid_[ETH_ALEN];
273 u8 auth_ssid[32];
274 size_t auth_ssid_len;
275 int auth_alg;
276 u8 *auth_ie;
277 size_t auth_ie_len;
278 u8 auth_wep_key[4][16];
279 size_t auth_wep_key_len[4];
280 int auth_wep_tx_keyidx;
281 int auth_local_state_change;
282 int auth_p2p;
283 };
286 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
287 void *timeout_ctx);
288 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
289 enum nl80211_iftype nlmode);
290 static int
291 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
292 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
293 const u8 *addr, int cmd, u16 reason_code,
294 int local_state_change);
295 static void nl80211_remove_monitor_interface(
296 struct wpa_driver_nl80211_data *drv);
297 static int nl80211_send_frame_cmd(struct i802_bss *bss,
298 unsigned int freq, unsigned int wait,
299 const u8 *buf, size_t buf_len, u64 *cookie,
300 int no_cck, int no_ack, int offchanok);
301 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
302 #ifdef ANDROID
303 static int android_pno_start(struct i802_bss *bss,
304 struct wpa_driver_scan_params *params);
305 static int android_pno_stop(struct i802_bss *bss);
306 #endif /* ANDROID */
308 #ifdef HOSTAPD
309 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
310 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
311 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
312 static int wpa_driver_nl80211_if_remove(void *priv,
313 enum wpa_driver_if_type type,
314 const char *ifname);
315 #else /* HOSTAPD */
316 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
317 {
318 }
320 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
321 {
322 }
324 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
325 {
326 return 0;
327 }
328 #endif /* HOSTAPD */
330 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
331 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
332 int ifindex, int disabled);
334 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
335 static int wpa_driver_nl80211_authenticate_retry(
336 struct wpa_driver_nl80211_data *drv);
339 static int is_ap_interface(enum nl80211_iftype nlmode)
340 {
341 return (nlmode == NL80211_IFTYPE_AP ||
342 nlmode == NL80211_IFTYPE_P2P_GO);
343 }
346 static int is_sta_interface(enum nl80211_iftype nlmode)
347 {
348 return (nlmode == NL80211_IFTYPE_STATION ||
349 nlmode == NL80211_IFTYPE_P2P_CLIENT);
350 }
353 static int is_p2p_interface(enum nl80211_iftype nlmode)
354 {
355 return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
356 nlmode == NL80211_IFTYPE_P2P_GO);
357 }
360 struct nl80211_bss_info_arg {
361 struct wpa_driver_nl80211_data *drv;
362 struct wpa_scan_results *res;
363 unsigned int assoc_freq;
364 u8 assoc_bssid[ETH_ALEN];
365 };
367 static int bss_info_handler(struct nl_msg *msg, void *arg);
370 /* nl80211 code */
371 static int ack_handler(struct nl_msg *msg, void *arg)
372 {
373 int *err = arg;
374 *err = 0;
375 return NL_STOP;
376 }
378 static int finish_handler(struct nl_msg *msg, void *arg)
379 {
380 int *ret = arg;
381 *ret = 0;
382 return NL_SKIP;
383 }
385 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
386 void *arg)
387 {
388 int *ret = arg;
389 *ret = err->error;
390 return NL_SKIP;
391 }
394 static int no_seq_check(struct nl_msg *msg, void *arg)
395 {
396 return NL_OK;
397 }
400 static int send_and_recv(struct nl80211_global *global,
401 struct nl_handle *nl_handle, struct nl_msg *msg,
402 int (*valid_handler)(struct nl_msg *, void *),
403 void *valid_data)
404 {
405 struct nl_cb *cb;
406 int err = -ENOMEM;
408 cb = nl_cb_clone(global->nl_cb);
409 if (!cb)
410 goto out;
412 err = nl_send_auto_complete(nl_handle, msg);
413 if (err < 0)
414 goto out;
416 err = 1;
418 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
419 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
420 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
422 if (valid_handler)
423 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
424 valid_handler, valid_data);
426 while (err > 0)
427 nl_recvmsgs(nl_handle, cb);
428 out:
429 nl_cb_put(cb);
430 nlmsg_free(msg);
431 return err;
432 }
435 static int send_and_recv_msgs_global(struct nl80211_global *global,
436 struct nl_msg *msg,
437 int (*valid_handler)(struct nl_msg *, void *),
438 void *valid_data)
439 {
440 return send_and_recv(global, global->nl, msg, valid_handler,
441 valid_data);
442 }
445 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
446 struct nl_msg *msg,
447 int (*valid_handler)(struct nl_msg *, void *),
448 void *valid_data)
449 {
450 return send_and_recv(drv->global, drv->global->nl, msg,
451 valid_handler, valid_data);
452 }
455 struct family_data {
456 const char *group;
457 int id;
458 };
461 static int family_handler(struct nl_msg *msg, void *arg)
462 {
463 struct family_data *res = arg;
464 struct nlattr *tb[CTRL_ATTR_MAX + 1];
465 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
466 struct nlattr *mcgrp;
467 int i;
469 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
470 genlmsg_attrlen(gnlh, 0), NULL);
471 if (!tb[CTRL_ATTR_MCAST_GROUPS])
472 return NL_SKIP;
474 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
475 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
476 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
477 nla_len(mcgrp), NULL);
478 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
479 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
480 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
481 res->group,
482 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
483 continue;
484 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
485 break;
486 };
488 return NL_SKIP;
489 }
492 static int nl_get_multicast_id(struct nl80211_global *global,
493 const char *family, const char *group)
494 {
495 struct nl_msg *msg;
496 int ret = -1;
497 struct family_data res = { group, -ENOENT };
499 msg = nlmsg_alloc();
500 if (!msg)
501 return -ENOMEM;
502 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
503 0, 0, CTRL_CMD_GETFAMILY, 0);
504 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
506 ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
507 msg = NULL;
508 if (ret == 0)
509 ret = res.id;
511 nla_put_failure:
512 nlmsg_free(msg);
513 return ret;
514 }
517 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
518 struct nl_msg *msg, int flags, uint8_t cmd)
519 {
520 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
521 0, flags, cmd, 0);
522 }
525 struct wiphy_idx_data {
526 int wiphy_idx;
527 };
530 static int netdev_info_handler(struct nl_msg *msg, void *arg)
531 {
532 struct nlattr *tb[NL80211_ATTR_MAX + 1];
533 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
534 struct wiphy_idx_data *info = arg;
536 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
537 genlmsg_attrlen(gnlh, 0), NULL);
539 if (tb[NL80211_ATTR_WIPHY])
540 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
542 return NL_SKIP;
543 }
546 static int nl80211_get_wiphy_index(struct i802_bss *bss)
547 {
548 struct nl_msg *msg;
549 struct wiphy_idx_data data = {
550 .wiphy_idx = -1,
551 };
553 msg = nlmsg_alloc();
554 if (!msg)
555 return -1;
557 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
559 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
561 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
562 return data.wiphy_idx;
563 msg = NULL;
564 nla_put_failure:
565 nlmsg_free(msg);
566 return -1;
567 }
570 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
571 struct nl80211_wiphy_data *w)
572 {
573 struct nl_msg *msg;
574 int ret = -1;
576 msg = nlmsg_alloc();
577 if (!msg)
578 return -1;
580 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
582 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
584 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
585 msg = NULL;
586 if (ret) {
587 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
588 "failed: ret=%d (%s)",
589 ret, strerror(-ret));
590 goto nla_put_failure;
591 }
592 ret = 0;
593 nla_put_failure:
594 nlmsg_free(msg);
595 return ret;
596 }
599 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
600 {
601 struct nl80211_wiphy_data *w = eloop_ctx;
603 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
605 nl_recvmsgs(handle, w->nl_cb);
606 }
609 static int process_beacon_event(struct nl_msg *msg, void *arg)
610 {
611 struct nl80211_wiphy_data *w = arg;
612 struct wpa_driver_nl80211_data *drv;
613 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
614 struct nlattr *tb[NL80211_ATTR_MAX + 1];
615 union wpa_event_data event;
617 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
618 genlmsg_attrlen(gnlh, 0), NULL);
620 if (gnlh->cmd != NL80211_CMD_FRAME) {
621 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
622 gnlh->cmd);
623 return NL_SKIP;
624 }
626 if (!tb[NL80211_ATTR_FRAME])
627 return NL_SKIP;
629 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
630 wiphy_list) {
631 os_memset(&event, 0, sizeof(event));
632 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
633 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
634 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
635 }
637 return NL_SKIP;
638 }
641 static struct nl80211_wiphy_data *
642 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
643 {
644 static DEFINE_DL_LIST(nl80211_wiphys);
645 struct nl80211_wiphy_data *w;
646 int wiphy_idx, found = 0;
647 struct i802_bss *tmp_bss;
649 if (bss->wiphy_data != NULL)
650 return bss->wiphy_data;
652 wiphy_idx = nl80211_get_wiphy_index(bss);
654 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
655 if (w->wiphy_idx == wiphy_idx)
656 goto add;
657 }
659 /* alloc new one */
660 w = os_zalloc(sizeof(*w));
661 if (w == NULL)
662 return NULL;
663 w->wiphy_idx = wiphy_idx;
664 dl_list_init(&w->bsss);
665 dl_list_init(&w->drvs);
667 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
668 if (!w->nl_cb) {
669 os_free(w);
670 return NULL;
671 }
672 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
673 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
674 w);
676 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
677 "wiphy beacons");
678 if (w->nl_beacons == NULL) {
679 os_free(w);
680 return NULL;
681 }
683 if (nl80211_register_beacons(bss->drv, w)) {
684 nl_destroy_handles(&w->nl_beacons);
685 os_free(w);
686 return NULL;
687 }
689 eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons),
690 nl80211_recv_beacons, w, w->nl_beacons);
692 dl_list_add(&nl80211_wiphys, &w->list);
694 add:
695 /* drv entry for this bss already there? */
696 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
697 if (tmp_bss->drv == bss->drv) {
698 found = 1;
699 break;
700 }
701 }
702 /* if not add it */
703 if (!found)
704 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
706 dl_list_add(&w->bsss, &bss->wiphy_list);
707 bss->wiphy_data = w;
708 return w;
709 }
712 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
713 {
714 struct nl80211_wiphy_data *w = bss->wiphy_data;
715 struct i802_bss *tmp_bss;
716 int found = 0;
718 if (w == NULL)
719 return;
720 bss->wiphy_data = NULL;
721 dl_list_del(&bss->wiphy_list);
723 /* still any for this drv present? */
724 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
725 if (tmp_bss->drv == bss->drv) {
726 found = 1;
727 break;
728 }
729 }
730 /* if not remove it */
731 if (!found)
732 dl_list_del(&bss->drv->wiphy_list);
734 if (!dl_list_empty(&w->bsss))
735 return;
737 eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons));
739 nl_cb_put(w->nl_cb);
740 nl_destroy_handles(&w->nl_beacons);
741 dl_list_del(&w->list);
742 os_free(w);
743 }
746 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
747 {
748 struct i802_bss *bss = priv;
749 struct wpa_driver_nl80211_data *drv = bss->drv;
750 if (!drv->associated)
751 return -1;
752 os_memcpy(bssid, drv->bssid, ETH_ALEN);
753 return 0;
754 }
757 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
758 {
759 struct i802_bss *bss = priv;
760 struct wpa_driver_nl80211_data *drv = bss->drv;
761 if (!drv->associated)
762 return -1;
763 os_memcpy(ssid, drv->ssid, drv->ssid_len);
764 return drv->ssid_len;
765 }
768 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
769 char *buf, size_t len, int del)
770 {
771 union wpa_event_data event;
773 os_memset(&event, 0, sizeof(event));
774 if (len > sizeof(event.interface_status.ifname))
775 len = sizeof(event.interface_status.ifname) - 1;
776 os_memcpy(event.interface_status.ifname, buf, len);
777 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
778 EVENT_INTERFACE_ADDED;
780 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
781 del ? "DEL" : "NEW",
782 event.interface_status.ifname,
783 del ? "removed" : "added");
785 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
786 if (del) {
787 if (drv->if_removed) {
788 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
789 "already set - ignore event");
790 return;
791 }
792 drv->if_removed = 1;
793 } else {
794 if (if_nametoindex(drv->first_bss.ifname) == 0) {
795 wpa_printf(MSG_DEBUG, "nl80211: Interface %s "
796 "does not exist - ignore "
797 "RTM_NEWLINK",
798 drv->first_bss.ifname);
799 return;
800 }
801 if (!drv->if_removed) {
802 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
803 "already cleared - ignore event");
804 return;
805 }
806 drv->if_removed = 0;
807 }
808 }
810 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
811 }
814 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
815 u8 *buf, size_t len)
816 {
817 int attrlen, rta_len;
818 struct rtattr *attr;
820 attrlen = len;
821 attr = (struct rtattr *) buf;
823 rta_len = RTA_ALIGN(sizeof(struct rtattr));
824 while (RTA_OK(attr, attrlen)) {
825 if (attr->rta_type == IFLA_IFNAME) {
826 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
827 == 0)
828 return 1;
829 else
830 break;
831 }
832 attr = RTA_NEXT(attr, attrlen);
833 }
835 return 0;
836 }
839 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
840 int ifindex, u8 *buf, size_t len)
841 {
842 if (drv->ifindex == ifindex)
843 return 1;
845 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
846 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
847 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
848 "interface");
849 wpa_driver_nl80211_finish_drv_init(drv);
850 return 1;
851 }
853 return 0;
854 }
857 static struct wpa_driver_nl80211_data *
858 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
859 {
860 struct wpa_driver_nl80211_data *drv;
861 dl_list_for_each(drv, &global->interfaces,
862 struct wpa_driver_nl80211_data, list) {
863 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
864 have_ifidx(drv, idx))
865 return drv;
866 }
867 return NULL;
868 }
871 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
872 struct ifinfomsg *ifi,
873 u8 *buf, size_t len)
874 {
875 struct nl80211_global *global = ctx;
876 struct wpa_driver_nl80211_data *drv;
877 int attrlen, rta_len;
878 struct rtattr *attr;
879 u32 brid = 0;
880 char namebuf[IFNAMSIZ];
882 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
883 if (!drv) {
884 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
885 "ifindex %d", ifi->ifi_index);
886 return;
887 }
889 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
890 "(%s%s%s%s)",
891 drv->operstate, ifi->ifi_flags,
892 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
893 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
894 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
895 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
897 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
898 if (if_indextoname(ifi->ifi_index, namebuf) &&
899 linux_iface_up(drv->global->ioctl_sock,
900 drv->first_bss.ifname) > 0) {
901 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
902 "event since interface %s is up", namebuf);
903 return;
904 }
905 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
906 if (drv->ignore_if_down_event) {
907 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
908 "event generated by mode change");
909 drv->ignore_if_down_event = 0;
910 } else {
911 drv->if_disabled = 1;
912 wpa_supplicant_event(drv->ctx,
913 EVENT_INTERFACE_DISABLED, NULL);
914 }
915 }
917 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
918 if (if_indextoname(ifi->ifi_index, namebuf) &&
919 linux_iface_up(drv->global->ioctl_sock,
920 drv->first_bss.ifname) == 0) {
921 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
922 "event since interface %s is down",
923 namebuf);
924 } else if (if_nametoindex(drv->first_bss.ifname) == 0) {
925 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
926 "event since interface %s does not exist",
927 drv->first_bss.ifname);
928 } else if (drv->if_removed) {
929 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
930 "event since interface %s is marked "
931 "removed", drv->first_bss.ifname);
932 } else {
933 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
934 drv->if_disabled = 0;
935 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
936 NULL);
937 }
938 }
940 /*
941 * Some drivers send the association event before the operup event--in
942 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
943 * fails. This will hit us when wpa_supplicant does not need to do
944 * IEEE 802.1X authentication
945 */
946 if (drv->operstate == 1 &&
947 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
948 !(ifi->ifi_flags & IFF_RUNNING))
949 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
950 -1, IF_OPER_UP);
952 attrlen = len;
953 attr = (struct rtattr *) buf;
954 rta_len = RTA_ALIGN(sizeof(struct rtattr));
955 while (RTA_OK(attr, attrlen)) {
956 if (attr->rta_type == IFLA_IFNAME) {
957 wpa_driver_nl80211_event_link(
958 drv,
959 ((char *) attr) + rta_len,
960 attr->rta_len - rta_len, 0);
961 } else if (attr->rta_type == IFLA_MASTER)
962 brid = nla_get_u32((struct nlattr *) attr);
963 attr = RTA_NEXT(attr, attrlen);
964 }
966 if (ifi->ifi_family == AF_BRIDGE && brid) {
967 /* device has been added to bridge */
968 if_indextoname(brid, namebuf);
969 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
970 brid, namebuf);
971 add_ifidx(drv, brid);
972 }
973 }
976 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
977 struct ifinfomsg *ifi,
978 u8 *buf, size_t len)
979 {
980 struct nl80211_global *global = ctx;
981 struct wpa_driver_nl80211_data *drv;
982 int attrlen, rta_len;
983 struct rtattr *attr;
984 u32 brid = 0;
986 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
987 if (!drv) {
988 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
989 "foreign ifindex %d", ifi->ifi_index);
990 return;
991 }
993 attrlen = len;
994 attr = (struct rtattr *) buf;
996 rta_len = RTA_ALIGN(sizeof(struct rtattr));
997 while (RTA_OK(attr, attrlen)) {
998 if (attr->rta_type == IFLA_IFNAME) {
999 wpa_driver_nl80211_event_link(
1000 drv,
1001 ((char *) attr) + rta_len,
1002 attr->rta_len - rta_len, 1);
1003 } else if (attr->rta_type == IFLA_MASTER)
1004 brid = nla_get_u32((struct nlattr *) attr);
1005 attr = RTA_NEXT(attr, attrlen);
1006 }
1008 if (ifi->ifi_family == AF_BRIDGE && brid) {
1009 /* device has been removed from bridge */
1010 char namebuf[IFNAMSIZ];
1011 if_indextoname(brid, namebuf);
1012 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1013 "%s", brid, namebuf);
1014 del_ifidx(drv, brid);
1015 }
1016 }
1019 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1020 const u8 *frame, size_t len)
1021 {
1022 const struct ieee80211_mgmt *mgmt;
1023 union wpa_event_data event;
1025 mgmt = (const struct ieee80211_mgmt *) frame;
1026 if (len < 24 + sizeof(mgmt->u.auth)) {
1027 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1028 "frame");
1029 return;
1030 }
1032 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1033 os_memset(&event, 0, sizeof(event));
1034 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1035 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1036 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1037 if (len > 24 + sizeof(mgmt->u.auth)) {
1038 event.auth.ies = mgmt->u.auth.variable;
1039 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1040 }
1042 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1043 }
1046 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1047 {
1048 struct nl_msg *msg;
1049 int ret;
1050 struct nl80211_bss_info_arg arg;
1052 os_memset(&arg, 0, sizeof(arg));
1053 msg = nlmsg_alloc();
1054 if (!msg)
1055 goto nla_put_failure;
1057 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1058 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1060 arg.drv = drv;
1061 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1062 msg = NULL;
1063 if (ret == 0) {
1064 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1065 "associated BSS from scan results: %u MHz",
1066 arg.assoc_freq);
1067 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
1068 }
1069 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1070 "(%s)", ret, strerror(-ret));
1071 nla_put_failure:
1072 nlmsg_free(msg);
1073 return drv->assoc_freq;
1074 }
1077 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1078 const u8 *frame, size_t len)
1079 {
1080 const struct ieee80211_mgmt *mgmt;
1081 union wpa_event_data event;
1082 u16 status;
1084 mgmt = (const struct ieee80211_mgmt *) frame;
1085 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1086 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1087 "frame");
1088 return;
1089 }
1091 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1092 if (status != WLAN_STATUS_SUCCESS) {
1093 os_memset(&event, 0, sizeof(event));
1094 event.assoc_reject.bssid = mgmt->bssid;
1095 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1096 event.assoc_reject.resp_ies =
1097 (u8 *) mgmt->u.assoc_resp.variable;
1098 event.assoc_reject.resp_ies_len =
1099 len - 24 - sizeof(mgmt->u.assoc_resp);
1100 }
1101 event.assoc_reject.status_code = status;
1103 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1104 return;
1105 }
1107 drv->associated = 1;
1108 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1110 os_memset(&event, 0, sizeof(event));
1111 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1112 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1113 event.assoc_info.resp_ies_len =
1114 len - 24 - sizeof(mgmt->u.assoc_resp);
1115 }
1117 event.assoc_info.freq = drv->assoc_freq;
1119 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1120 }
1123 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1124 enum nl80211_commands cmd, struct nlattr *status,
1125 struct nlattr *addr, struct nlattr *req_ie,
1126 struct nlattr *resp_ie)
1127 {
1128 union wpa_event_data event;
1130 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1131 /*
1132 * Avoid reporting two association events that would confuse
1133 * the core code.
1134 */
1135 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1136 "when using userspace SME", cmd);
1137 return;
1138 }
1140 os_memset(&event, 0, sizeof(event));
1141 if (cmd == NL80211_CMD_CONNECT &&
1142 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1143 if (addr)
1144 event.assoc_reject.bssid = nla_data(addr);
1145 if (resp_ie) {
1146 event.assoc_reject.resp_ies = nla_data(resp_ie);
1147 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1148 }
1149 event.assoc_reject.status_code = nla_get_u16(status);
1150 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1151 return;
1152 }
1154 drv->associated = 1;
1155 if (addr)
1156 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1158 if (req_ie) {
1159 event.assoc_info.req_ies = nla_data(req_ie);
1160 event.assoc_info.req_ies_len = nla_len(req_ie);
1161 }
1162 if (resp_ie) {
1163 event.assoc_info.resp_ies = nla_data(resp_ie);
1164 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1165 }
1167 event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1169 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1170 }
1173 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1174 struct nlattr *reason, struct nlattr *addr,
1175 struct nlattr *by_ap)
1176 {
1177 union wpa_event_data data;
1179 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1180 /*
1181 * Avoid reporting two disassociation events that could
1182 * confuse the core code.
1183 */
1184 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1185 "event when using userspace SME");
1186 return;
1187 }
1189 drv->associated = 0;
1190 os_memset(&data, 0, sizeof(data));
1191 if (reason)
1192 data.disassoc_info.reason_code = nla_get_u16(reason);
1193 data.disassoc_info.locally_generated = by_ap == NULL;
1194 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
1195 }
1198 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1199 enum nl80211_commands cmd, struct nlattr *addr)
1200 {
1201 union wpa_event_data event;
1202 enum wpa_event_type ev;
1204 if (nla_len(addr) != ETH_ALEN)
1205 return;
1207 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1208 cmd, MAC2STR((u8 *) nla_data(addr)));
1210 if (cmd == NL80211_CMD_AUTHENTICATE)
1211 ev = EVENT_AUTH_TIMED_OUT;
1212 else if (cmd == NL80211_CMD_ASSOCIATE)
1213 ev = EVENT_ASSOC_TIMED_OUT;
1214 else
1215 return;
1217 os_memset(&event, 0, sizeof(event));
1218 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1219 wpa_supplicant_event(drv->ctx, ev, &event);
1220 }
1223 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1224 struct nlattr *freq, const u8 *frame, size_t len)
1225 {
1226 const struct ieee80211_mgmt *mgmt;
1227 union wpa_event_data event;
1228 u16 fc, stype;
1230 mgmt = (const struct ieee80211_mgmt *) frame;
1231 if (len < 24) {
1232 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
1233 return;
1234 }
1236 fc = le_to_host16(mgmt->frame_control);
1237 stype = WLAN_FC_GET_STYPE(fc);
1239 os_memset(&event, 0, sizeof(event));
1240 if (freq) {
1241 event.rx_action.freq = nla_get_u32(freq);
1242 drv->last_mgmt_freq = event.rx_action.freq;
1243 }
1244 if (stype == WLAN_FC_STYPE_ACTION) {
1245 event.rx_action.da = mgmt->da;
1246 event.rx_action.sa = mgmt->sa;
1247 event.rx_action.bssid = mgmt->bssid;
1248 event.rx_action.category = mgmt->u.action.category;
1249 event.rx_action.data = &mgmt->u.action.category + 1;
1250 event.rx_action.len = frame + len - event.rx_action.data;
1251 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
1252 } else {
1253 event.rx_mgmt.frame = frame;
1254 event.rx_mgmt.frame_len = len;
1255 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1256 }
1257 }
1260 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1261 struct nlattr *cookie, const u8 *frame,
1262 size_t len, struct nlattr *ack)
1263 {
1264 union wpa_event_data event;
1265 const struct ieee80211_hdr *hdr;
1266 u16 fc;
1268 if (!is_ap_interface(drv->nlmode)) {
1269 u64 cookie_val;
1271 if (!cookie)
1272 return;
1274 cookie_val = nla_get_u64(cookie);
1275 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1276 " cookie=0%llx%s (ack=%d)",
1277 (long long unsigned int) cookie_val,
1278 cookie_val == drv->send_action_cookie ?
1279 " (match)" : " (unknown)", ack != NULL);
1280 if (cookie_val != drv->send_action_cookie)
1281 return;
1282 }
1284 hdr = (const struct ieee80211_hdr *) frame;
1285 fc = le_to_host16(hdr->frame_control);
1287 os_memset(&event, 0, sizeof(event));
1288 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1289 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1290 event.tx_status.dst = hdr->addr1;
1291 event.tx_status.data = frame;
1292 event.tx_status.data_len = len;
1293 event.tx_status.ack = ack != NULL;
1294 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1295 }
1298 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1299 enum wpa_event_type type,
1300 const u8 *frame, size_t len)
1301 {
1302 const struct ieee80211_mgmt *mgmt;
1303 union wpa_event_data event;
1304 const u8 *bssid = NULL;
1305 u16 reason_code = 0;
1307 mgmt = (const struct ieee80211_mgmt *) frame;
1308 if (len >= 24) {
1309 bssid = mgmt->bssid;
1311 if (drv->associated != 0 &&
1312 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1313 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1314 /*
1315 * We have presumably received this deauth as a
1316 * response to a clear_state_mismatch() outgoing
1317 * deauth. Don't let it take us offline!
1318 */
1319 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1320 "from Unknown BSSID " MACSTR " -- ignoring",
1321 MAC2STR(bssid));
1322 return;
1323 }
1324 }
1326 drv->associated = 0;
1327 os_memset(&event, 0, sizeof(event));
1329 /* Note: Same offset for Reason Code in both frame subtypes */
1330 if (len >= 24 + sizeof(mgmt->u.deauth))
1331 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1333 if (type == EVENT_DISASSOC) {
1334 event.disassoc_info.locally_generated =
1335 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1336 event.disassoc_info.addr = bssid;
1337 event.disassoc_info.reason_code = reason_code;
1338 if (frame + len > mgmt->u.disassoc.variable) {
1339 event.disassoc_info.ie = mgmt->u.disassoc.variable;
1340 event.disassoc_info.ie_len = frame + len -
1341 mgmt->u.disassoc.variable;
1342 }
1343 } else {
1344 event.deauth_info.locally_generated =
1345 !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1346 event.deauth_info.addr = bssid;
1347 event.deauth_info.reason_code = reason_code;
1348 if (frame + len > mgmt->u.deauth.variable) {
1349 event.deauth_info.ie = mgmt->u.deauth.variable;
1350 event.deauth_info.ie_len = frame + len -
1351 mgmt->u.deauth.variable;
1352 }
1353 }
1355 wpa_supplicant_event(drv->ctx, type, &event);
1356 }
1359 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1360 enum wpa_event_type type,
1361 const u8 *frame, size_t len)
1362 {
1363 const struct ieee80211_mgmt *mgmt;
1364 union wpa_event_data event;
1365 u16 reason_code = 0;
1367 if (len < 24)
1368 return;
1370 mgmt = (const struct ieee80211_mgmt *) frame;
1372 os_memset(&event, 0, sizeof(event));
1373 /* Note: Same offset for Reason Code in both frame subtypes */
1374 if (len >= 24 + sizeof(mgmt->u.deauth))
1375 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1377 if (type == EVENT_UNPROT_DISASSOC) {
1378 event.unprot_disassoc.sa = mgmt->sa;
1379 event.unprot_disassoc.da = mgmt->da;
1380 event.unprot_disassoc.reason_code = reason_code;
1381 } else {
1382 event.unprot_deauth.sa = mgmt->sa;
1383 event.unprot_deauth.da = mgmt->da;
1384 event.unprot_deauth.reason_code = reason_code;
1385 }
1387 wpa_supplicant_event(drv->ctx, type, &event);
1388 }
1391 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1392 enum nl80211_commands cmd, struct nlattr *frame,
1393 struct nlattr *addr, struct nlattr *timed_out,
1394 struct nlattr *freq, struct nlattr *ack,
1395 struct nlattr *cookie)
1396 {
1397 if (timed_out && addr) {
1398 mlme_timeout_event(drv, cmd, addr);
1399 return;
1400 }
1402 if (frame == NULL) {
1403 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1404 "data", cmd);
1405 return;
1406 }
1408 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1409 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1410 nla_data(frame), nla_len(frame));
1412 switch (cmd) {
1413 case NL80211_CMD_AUTHENTICATE:
1414 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1415 break;
1416 case NL80211_CMD_ASSOCIATE:
1417 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1418 break;
1419 case NL80211_CMD_DEAUTHENTICATE:
1420 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1421 nla_data(frame), nla_len(frame));
1422 break;
1423 case NL80211_CMD_DISASSOCIATE:
1424 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1425 nla_data(frame), nla_len(frame));
1426 break;
1427 case NL80211_CMD_FRAME:
1428 mlme_event_mgmt(drv, freq, nla_data(frame), nla_len(frame));
1429 break;
1430 case NL80211_CMD_FRAME_TX_STATUS:
1431 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1432 nla_len(frame), ack);
1433 break;
1434 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1435 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1436 nla_data(frame), nla_len(frame));
1437 break;
1438 case NL80211_CMD_UNPROT_DISASSOCIATE:
1439 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1440 nla_data(frame), nla_len(frame));
1441 break;
1442 default:
1443 break;
1444 }
1445 }
1448 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1449 struct nlattr *tb[])
1450 {
1451 union wpa_event_data data;
1453 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1454 os_memset(&data, 0, sizeof(data));
1455 if (tb[NL80211_ATTR_MAC]) {
1456 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1457 nla_data(tb[NL80211_ATTR_MAC]),
1458 nla_len(tb[NL80211_ATTR_MAC]));
1459 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1460 }
1461 if (tb[NL80211_ATTR_KEY_SEQ]) {
1462 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1463 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1464 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1465 }
1466 if (tb[NL80211_ATTR_KEY_TYPE]) {
1467 enum nl80211_key_type key_type =
1468 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1469 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1470 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1471 data.michael_mic_failure.unicast = 1;
1472 } else
1473 data.michael_mic_failure.unicast = 1;
1475 if (tb[NL80211_ATTR_KEY_IDX]) {
1476 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1477 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1478 }
1480 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1481 }
1484 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1485 struct nlattr *tb[])
1486 {
1487 if (tb[NL80211_ATTR_MAC] == NULL) {
1488 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1489 "event");
1490 return;
1491 }
1492 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1493 drv->associated = 1;
1494 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1495 MAC2STR(drv->bssid));
1497 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1498 }
1501 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1502 int cancel_event, struct nlattr *tb[])
1503 {
1504 unsigned int freq, chan_type, duration;
1505 union wpa_event_data data;
1506 u64 cookie;
1508 if (tb[NL80211_ATTR_WIPHY_FREQ])
1509 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1510 else
1511 freq = 0;
1513 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1514 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1515 else
1516 chan_type = 0;
1518 if (tb[NL80211_ATTR_DURATION])
1519 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1520 else
1521 duration = 0;
1523 if (tb[NL80211_ATTR_COOKIE])
1524 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1525 else
1526 cookie = 0;
1528 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1529 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1530 cancel_event, freq, chan_type, duration,
1531 (long long unsigned int) cookie,
1532 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1534 if (cookie != drv->remain_on_chan_cookie)
1535 return; /* not for us */
1537 if (cancel_event)
1538 drv->pending_remain_on_chan = 0;
1540 os_memset(&data, 0, sizeof(data));
1541 data.remain_on_channel.freq = freq;
1542 data.remain_on_channel.duration = duration;
1543 wpa_supplicant_event(drv->ctx, cancel_event ?
1544 EVENT_CANCEL_REMAIN_ON_CHANNEL :
1545 EVENT_REMAIN_ON_CHANNEL, &data);
1546 }
1549 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1550 struct nlattr *tb[])
1551 {
1552 union wpa_event_data event;
1553 struct nlattr *nl;
1554 int rem;
1555 struct scan_info *info;
1556 #define MAX_REPORT_FREQS 50
1557 int freqs[MAX_REPORT_FREQS];
1558 int num_freqs = 0;
1560 if (drv->scan_for_auth) {
1561 drv->scan_for_auth = 0;
1562 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
1563 "cfg80211 BSS entry");
1564 wpa_driver_nl80211_authenticate_retry(drv);
1565 return;
1566 }
1568 os_memset(&event, 0, sizeof(event));
1569 info = &event.scan_info;
1570 info->aborted = aborted;
1572 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1573 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1574 struct wpa_driver_scan_ssid *s =
1575 &info->ssids[info->num_ssids];
1576 s->ssid = nla_data(nl);
1577 s->ssid_len = nla_len(nl);
1578 info->num_ssids++;
1579 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1580 break;
1581 }
1582 }
1583 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1584 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1585 {
1586 freqs[num_freqs] = nla_get_u32(nl);
1587 num_freqs++;
1588 if (num_freqs == MAX_REPORT_FREQS - 1)
1589 break;
1590 }
1591 info->freqs = freqs;
1592 info->num_freqs = num_freqs;
1593 }
1594 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1595 }
1598 static int get_link_signal(struct nl_msg *msg, void *arg)
1599 {
1600 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1601 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1602 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1603 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1604 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1605 };
1606 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1607 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1608 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1609 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1610 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1611 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1612 };
1613 struct wpa_signal_info *sig_change = arg;
1615 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1616 genlmsg_attrlen(gnlh, 0), NULL);
1617 if (!tb[NL80211_ATTR_STA_INFO] ||
1618 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1619 tb[NL80211_ATTR_STA_INFO], policy))
1620 return NL_SKIP;
1621 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1622 return NL_SKIP;
1624 sig_change->current_signal =
1625 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1627 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1628 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1629 sinfo[NL80211_STA_INFO_TX_BITRATE],
1630 rate_policy)) {
1631 sig_change->current_txrate = 0;
1632 } else {
1633 if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1634 sig_change->current_txrate =
1635 nla_get_u16(rinfo[
1636 NL80211_RATE_INFO_BITRATE]) * 100;
1637 }
1638 }
1639 }
1641 return NL_SKIP;
1642 }
1645 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1646 struct wpa_signal_info *sig)
1647 {
1648 struct nl_msg *msg;
1650 sig->current_signal = -9999;
1651 sig->current_txrate = 0;
1653 msg = nlmsg_alloc();
1654 if (!msg)
1655 return -ENOMEM;
1657 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1659 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1660 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1662 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1663 nla_put_failure:
1664 nlmsg_free(msg);
1665 return -ENOBUFS;
1666 }
1669 static int get_link_noise(struct nl_msg *msg, void *arg)
1670 {
1671 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1672 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1673 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1674 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1675 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1676 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1677 };
1678 struct wpa_signal_info *sig_change = arg;
1680 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1681 genlmsg_attrlen(gnlh, 0), NULL);
1683 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1684 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1685 return NL_SKIP;
1686 }
1688 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1689 tb[NL80211_ATTR_SURVEY_INFO],
1690 survey_policy)) {
1691 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1692 "attributes!");
1693 return NL_SKIP;
1694 }
1696 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1697 return NL_SKIP;
1699 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1700 sig_change->frequency)
1701 return NL_SKIP;
1703 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1704 return NL_SKIP;
1706 sig_change->current_noise =
1707 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1709 return NL_SKIP;
1710 }
1713 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1714 struct wpa_signal_info *sig_change)
1715 {
1716 struct nl_msg *msg;
1718 sig_change->current_noise = 9999;
1719 sig_change->frequency = drv->assoc_freq;
1721 msg = nlmsg_alloc();
1722 if (!msg)
1723 return -ENOMEM;
1725 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1727 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1729 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1730 nla_put_failure:
1731 nlmsg_free(msg);
1732 return -ENOBUFS;
1733 }
1736 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1737 {
1738 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1739 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1740 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1741 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1742 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1743 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1744 };
1745 struct wpa_scan_results *scan_results = arg;
1746 struct wpa_scan_res *scan_res;
1747 size_t i;
1749 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1750 genlmsg_attrlen(gnlh, 0), NULL);
1752 if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1753 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1754 return NL_SKIP;
1755 }
1757 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1758 tb[NL80211_ATTR_SURVEY_INFO],
1759 survey_policy)) {
1760 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1761 "attributes");
1762 return NL_SKIP;
1763 }
1765 if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1766 return NL_SKIP;
1768 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1769 return NL_SKIP;
1771 for (i = 0; i < scan_results->num; ++i) {
1772 scan_res = scan_results->res[i];
1773 if (!scan_res)
1774 continue;
1775 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1776 scan_res->freq)
1777 continue;
1778 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1779 continue;
1780 scan_res->noise = (s8)
1781 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1782 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1783 }
1785 return NL_SKIP;
1786 }
1789 static int nl80211_get_noise_for_scan_results(
1790 struct wpa_driver_nl80211_data *drv,
1791 struct wpa_scan_results *scan_res)
1792 {
1793 struct nl_msg *msg;
1795 msg = nlmsg_alloc();
1796 if (!msg)
1797 return -ENOMEM;
1799 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1801 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1803 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1804 scan_res);
1805 nla_put_failure:
1806 nlmsg_free(msg);
1807 return -ENOBUFS;
1808 }
1811 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1812 struct nlattr *tb[])
1813 {
1814 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1815 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1816 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1817 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1818 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1819 };
1820 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1821 enum nl80211_cqm_rssi_threshold_event event;
1822 union wpa_event_data ed;
1823 struct wpa_signal_info sig;
1824 int res;
1826 if (tb[NL80211_ATTR_CQM] == NULL ||
1827 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1828 cqm_policy)) {
1829 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1830 return;
1831 }
1833 os_memset(&ed, 0, sizeof(ed));
1835 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1836 if (!tb[NL80211_ATTR_MAC])
1837 return;
1838 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1839 ETH_ALEN);
1840 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1841 return;
1842 }
1844 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1845 return;
1846 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1848 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1849 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1850 "event: RSSI high");
1851 ed.signal_change.above_threshold = 1;
1852 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1853 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1854 "event: RSSI low");
1855 ed.signal_change.above_threshold = 0;
1856 } else
1857 return;
1859 res = nl80211_get_link_signal(drv, &sig);
1860 if (res == 0) {
1861 ed.signal_change.current_signal = sig.current_signal;
1862 ed.signal_change.current_txrate = sig.current_txrate;
1863 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d",
1864 sig.current_signal, sig.current_txrate);
1865 }
1867 res = nl80211_get_link_noise(drv, &sig);
1868 if (res == 0) {
1869 ed.signal_change.current_noise = sig.current_noise;
1870 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1871 sig.current_noise);
1872 }
1874 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1875 }
1878 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1879 struct nlattr **tb)
1880 {
1881 u8 *addr;
1882 union wpa_event_data data;
1884 if (tb[NL80211_ATTR_MAC] == NULL)
1885 return;
1886 addr = nla_data(tb[NL80211_ATTR_MAC]);
1887 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1889 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1890 u8 *ies = NULL;
1891 size_t ies_len = 0;
1892 if (tb[NL80211_ATTR_IE]) {
1893 ies = nla_data(tb[NL80211_ATTR_IE]);
1894 ies_len = nla_len(tb[NL80211_ATTR_IE]);
1895 }
1896 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1897 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1898 return;
1899 }
1901 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1902 return;
1904 os_memset(&data, 0, sizeof(data));
1905 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1906 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1907 }
1910 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1911 struct nlattr **tb)
1912 {
1913 u8 *addr;
1914 union wpa_event_data data;
1916 if (tb[NL80211_ATTR_MAC] == NULL)
1917 return;
1918 addr = nla_data(tb[NL80211_ATTR_MAC]);
1919 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1920 MAC2STR(addr));
1922 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1923 drv_event_disassoc(drv->ctx, addr);
1924 return;
1925 }
1927 if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1928 return;
1930 os_memset(&data, 0, sizeof(data));
1931 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1932 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1933 }
1936 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1937 struct nlattr **tb)
1938 {
1939 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1940 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1941 [NL80211_REKEY_DATA_KEK] = {
1942 .minlen = NL80211_KEK_LEN,
1943 .maxlen = NL80211_KEK_LEN,
1944 },
1945 [NL80211_REKEY_DATA_KCK] = {
1946 .minlen = NL80211_KCK_LEN,
1947 .maxlen = NL80211_KCK_LEN,
1948 },
1949 [NL80211_REKEY_DATA_REPLAY_CTR] = {
1950 .minlen = NL80211_REPLAY_CTR_LEN,
1951 .maxlen = NL80211_REPLAY_CTR_LEN,
1952 },
1953 };
1954 union wpa_event_data data;
1956 if (!tb[NL80211_ATTR_MAC])
1957 return;
1958 if (!tb[NL80211_ATTR_REKEY_DATA])
1959 return;
1960 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
1961 tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
1962 return;
1963 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
1964 return;
1966 os_memset(&data, 0, sizeof(data));
1967 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
1968 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
1969 MAC2STR(data.driver_gtk_rekey.bssid));
1970 data.driver_gtk_rekey.replay_ctr =
1971 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
1972 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
1973 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
1974 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
1975 }
1978 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
1979 struct nlattr **tb)
1980 {
1981 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
1982 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
1983 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
1984 [NL80211_PMKSA_CANDIDATE_BSSID] = {
1985 .minlen = ETH_ALEN,
1986 .maxlen = ETH_ALEN,
1987 },
1988 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
1989 };
1990 union wpa_event_data data;
1992 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
1993 return;
1994 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
1995 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
1996 return;
1997 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
1998 !cand[NL80211_PMKSA_CANDIDATE_BSSID])
1999 return;
2001 os_memset(&data, 0, sizeof(data));
2002 os_memcpy(data.pmkid_candidate.bssid,
2003 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
2004 data.pmkid_candidate.index =
2005 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
2006 data.pmkid_candidate.preauth =
2007 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
2008 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
2009 }
2012 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
2013 struct nlattr **tb)
2014 {
2015 union wpa_event_data data;
2017 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
2018 return;
2020 os_memset(&data, 0, sizeof(data));
2021 os_memcpy(data.client_poll.addr,
2022 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2024 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2025 }
2028 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2029 int wds)
2030 {
2031 struct wpa_driver_nl80211_data *drv = bss->drv;
2032 union wpa_event_data event;
2034 if (!tb[NL80211_ATTR_MAC])
2035 return;
2037 os_memset(&event, 0, sizeof(event));
2038 event.rx_from_unknown.bssid = bss->addr;
2039 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2040 event.rx_from_unknown.wds = wds;
2042 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2043 }
2046 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv,
2047 int cmd, struct nlattr **tb)
2048 {
2049 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2050 (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2051 cmd == NL80211_CMD_SCAN_ABORTED)) {
2052 wpa_driver_nl80211_set_mode(&drv->first_bss,
2053 drv->ap_scan_as_station);
2054 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2055 }
2057 switch (cmd) {
2058 case NL80211_CMD_TRIGGER_SCAN:
2059 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
2060 break;
2061 case NL80211_CMD_START_SCHED_SCAN:
2062 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
2063 break;
2064 case NL80211_CMD_SCHED_SCAN_STOPPED:
2065 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
2066 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2067 break;
2068 case NL80211_CMD_NEW_SCAN_RESULTS:
2069 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
2070 drv->scan_complete_events = 1;
2071 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2072 drv->ctx);
2073 send_scan_event(drv, 0, tb);
2074 break;
2075 case NL80211_CMD_SCHED_SCAN_RESULTS:
2076 wpa_printf(MSG_DEBUG,
2077 "nl80211: New sched scan results available");
2078 send_scan_event(drv, 0, tb);
2079 break;
2080 case NL80211_CMD_SCAN_ABORTED:
2081 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
2082 /*
2083 * Need to indicate that scan results are available in order
2084 * not to make wpa_supplicant stop its scanning.
2085 */
2086 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2087 drv->ctx);
2088 send_scan_event(drv, 1, tb);
2089 break;
2090 case NL80211_CMD_AUTHENTICATE:
2091 case NL80211_CMD_ASSOCIATE:
2092 case NL80211_CMD_DEAUTHENTICATE:
2093 case NL80211_CMD_DISASSOCIATE:
2094 case NL80211_CMD_FRAME_TX_STATUS:
2095 case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2096 case NL80211_CMD_UNPROT_DISASSOCIATE:
2097 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME],
2098 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2099 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2100 tb[NL80211_ATTR_COOKIE]);
2101 break;
2102 case NL80211_CMD_CONNECT:
2103 case NL80211_CMD_ROAM:
2104 mlme_event_connect(drv, cmd,
2105 tb[NL80211_ATTR_STATUS_CODE],
2106 tb[NL80211_ATTR_MAC],
2107 tb[NL80211_ATTR_REQ_IE],
2108 tb[NL80211_ATTR_RESP_IE]);
2109 break;
2110 case NL80211_CMD_DISCONNECT:
2111 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2112 tb[NL80211_ATTR_MAC],
2113 tb[NL80211_ATTR_DISCONNECTED_BY_AP]);
2114 break;
2115 case NL80211_CMD_MICHAEL_MIC_FAILURE:
2116 mlme_event_michael_mic_failure(drv, tb);
2117 break;
2118 case NL80211_CMD_JOIN_IBSS:
2119 mlme_event_join_ibss(drv, tb);
2120 break;
2121 case NL80211_CMD_REMAIN_ON_CHANNEL:
2122 mlme_event_remain_on_channel(drv, 0, tb);
2123 break;
2124 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2125 mlme_event_remain_on_channel(drv, 1, tb);
2126 break;
2127 case NL80211_CMD_NOTIFY_CQM:
2128 nl80211_cqm_event(drv, tb);
2129 break;
2130 case NL80211_CMD_REG_CHANGE:
2131 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2132 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2133 NULL);
2134 break;
2135 case NL80211_CMD_REG_BEACON_HINT:
2136 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
2137 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2138 NULL);
2139 break;
2140 case NL80211_CMD_NEW_STATION:
2141 nl80211_new_station_event(drv, tb);
2142 break;
2143 case NL80211_CMD_DEL_STATION:
2144 nl80211_del_station_event(drv, tb);
2145 break;
2146 case NL80211_CMD_SET_REKEY_OFFLOAD:
2147 nl80211_rekey_offload_event(drv, tb);
2148 break;
2149 case NL80211_CMD_PMKSA_CANDIDATE:
2150 nl80211_pmksa_candidate_event(drv, tb);
2151 break;
2152 case NL80211_CMD_PROBE_CLIENT:
2153 nl80211_client_probe_event(drv, tb);
2154 break;
2155 default:
2156 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2157 "(cmd=%d)", cmd);
2158 break;
2159 }
2160 }
2163 static int process_drv_event(struct nl_msg *msg, void *arg)
2164 {
2165 struct wpa_driver_nl80211_data *drv = arg;
2166 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2167 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2169 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2170 genlmsg_attrlen(gnlh, 0), NULL);
2172 if (tb[NL80211_ATTR_IFINDEX]) {
2173 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2174 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
2175 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
2176 " for foreign interface (ifindex %d)",
2177 gnlh->cmd, ifindex);
2178 return NL_SKIP;
2179 }
2180 }
2182 do_process_drv_event(drv, gnlh->cmd, tb);
2183 return NL_SKIP;
2184 }
2187 static int process_global_event(struct nl_msg *msg, void *arg)
2188 {
2189 struct nl80211_global *global = arg;
2190 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2191 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2192 struct wpa_driver_nl80211_data *drv;
2193 int ifidx = -1;
2195 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2196 genlmsg_attrlen(gnlh, 0), NULL);
2198 if (tb[NL80211_ATTR_IFINDEX])
2199 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2201 dl_list_for_each(drv, &global->interfaces,
2202 struct wpa_driver_nl80211_data, list) {
2203 if (ifidx == -1 || ifidx == drv->ifindex ||
2204 have_ifidx(drv, ifidx))
2205 do_process_drv_event(drv, gnlh->cmd, tb);
2206 }
2208 return NL_SKIP;
2209 }
2212 static int process_bss_event(struct nl_msg *msg, void *arg)
2213 {
2214 struct i802_bss *bss = arg;
2215 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2216 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2218 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2219 genlmsg_attrlen(gnlh, 0), NULL);
2221 switch (gnlh->cmd) {
2222 case NL80211_CMD_FRAME:
2223 case NL80211_CMD_FRAME_TX_STATUS:
2224 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
2225 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2226 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2227 tb[NL80211_ATTR_COOKIE]);
2228 break;
2229 case NL80211_CMD_UNEXPECTED_FRAME:
2230 nl80211_spurious_frame(bss, tb, 0);
2231 break;
2232 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
2233 nl80211_spurious_frame(bss, tb, 1);
2234 break;
2235 default:
2236 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2237 "(cmd=%d)", gnlh->cmd);
2238 break;
2239 }
2241 return NL_SKIP;
2242 }
2245 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
2246 void *handle)
2247 {
2248 struct nl_cb *cb = eloop_ctx;
2250 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
2252 nl_recvmsgs(handle, cb);
2253 }
2256 /**
2257 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
2258 * @priv: driver_nl80211 private data
2259 * @alpha2_arg: country to which to switch to
2260 * Returns: 0 on success, -1 on failure
2261 *
2262 * This asks nl80211 to set the regulatory domain for given
2263 * country ISO / IEC alpha2.
2264 */
2265 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
2266 {
2267 struct i802_bss *bss = priv;
2268 struct wpa_driver_nl80211_data *drv = bss->drv;
2269 char alpha2[3];
2270 struct nl_msg *msg;
2272 msg = nlmsg_alloc();
2273 if (!msg)
2274 return -ENOMEM;
2276 alpha2[0] = alpha2_arg[0];
2277 alpha2[1] = alpha2_arg[1];
2278 alpha2[2] = '\0';
2280 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
2282 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
2283 if (send_and_recv_msgs(drv, msg, NULL, NULL))
2284 return -EINVAL;
2285 return 0;
2286 nla_put_failure:
2287 nlmsg_free(msg);
2288 return -EINVAL;
2289 }
2292 struct wiphy_info_data {
2293 struct wpa_driver_capa *capa;
2295 unsigned int error:1;
2296 unsigned int device_ap_sme:1;
2297 unsigned int poll_command_supported:1;
2298 unsigned int data_tx_status:1;
2299 unsigned int monitor_supported:1;
2300 };
2303 static unsigned int probe_resp_offload_support(int supp_protocols)
2304 {
2305 unsigned int prot = 0;
2307 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
2308 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
2309 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
2310 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
2311 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
2312 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
2313 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
2314 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
2316 return prot;
2317 }
2320 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
2321 {
2322 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2323 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2324 struct wiphy_info_data *info = arg;
2325 int p2p_go_supported = 0, p2p_client_supported = 0;
2326 int p2p_concurrent = 0;
2327 int auth_supported = 0, connect_supported = 0;
2328 struct wpa_driver_capa *capa = info->capa;
2329 static struct nla_policy
2330 iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2331 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2332 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2333 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
2334 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
2335 },
2336 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2337 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2338 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2339 };
2341 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2342 genlmsg_attrlen(gnlh, 0), NULL);
2344 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
2345 capa->max_scan_ssids =
2346 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
2348 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
2349 capa->max_sched_scan_ssids =
2350 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
2352 if (tb[NL80211_ATTR_MAX_MATCH_SETS])
2353 capa->max_match_sets =
2354 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
2356 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
2357 struct nlattr *nl_mode;
2358 int i;
2359 nla_for_each_nested(nl_mode,
2360 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
2361 switch (nla_type(nl_mode)) {
2362 case NL80211_IFTYPE_AP:
2363 capa->flags |= WPA_DRIVER_FLAGS_AP;
2364 break;
2365 case NL80211_IFTYPE_P2P_GO:
2366 p2p_go_supported = 1;
2367 break;
2368 case NL80211_IFTYPE_P2P_CLIENT:
2369 p2p_client_supported = 1;
2370 break;
2371 case NL80211_IFTYPE_MONITOR:
2372 info->monitor_supported = 1;
2373 break;
2374 }
2375 }
2376 }
2378 if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
2379 struct nlattr *nl_combi;
2380 int rem_combi;
2382 nla_for_each_nested(nl_combi,
2383 tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
2384 rem_combi) {
2385 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
2386 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
2387 struct nlattr *nl_limit, *nl_mode;
2388 int err, rem_limit, rem_mode;
2389 int combination_has_p2p = 0, combination_has_mgd = 0;
2391 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
2392 nl_combi,
2393 iface_combination_policy);
2394 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
2395 !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
2396 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
2397 goto broken_combination;
2399 nla_for_each_nested(nl_limit,
2400 tb_comb[NL80211_IFACE_COMB_LIMITS],
2401 rem_limit) {
2402 err = nla_parse_nested(tb_limit,
2403 MAX_NL80211_IFACE_LIMIT,
2404 nl_limit,
2405 iface_limit_policy);
2406 if (err ||
2407 !tb_limit[NL80211_IFACE_LIMIT_TYPES])
2408 goto broken_combination;
2410 nla_for_each_nested(
2411 nl_mode,
2412 tb_limit[NL80211_IFACE_LIMIT_TYPES],
2413 rem_mode) {
2414 int ift = nla_type(nl_mode);
2415 if (ift == NL80211_IFTYPE_P2P_GO ||
2416 ift == NL80211_IFTYPE_P2P_CLIENT)
2417 combination_has_p2p = 1;
2418 if (ift == NL80211_IFTYPE_STATION)
2419 combination_has_mgd = 1;
2420 }
2421 if (combination_has_p2p && combination_has_mgd)
2422 break;
2423 }
2425 if (combination_has_p2p && combination_has_mgd) {
2426 p2p_concurrent = 1;
2427 break;
2428 }
2430 broken_combination:
2431 ;
2432 }
2433 }
2435 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
2436 struct nlattr *nl_cmd;
2437 int i;
2439 nla_for_each_nested(nl_cmd,
2440 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
2441 switch (nla_get_u32(nl_cmd)) {
2442 case NL80211_CMD_AUTHENTICATE:
2443 auth_supported = 1;
2444 break;
2445 case NL80211_CMD_CONNECT:
2446 connect_supported = 1;
2447 break;
2448 case NL80211_CMD_START_SCHED_SCAN:
2449 capa->sched_scan_supported = 1;
2450 break;
2451 case NL80211_CMD_PROBE_CLIENT:
2452 info->poll_command_supported = 1;
2453 break;
2454 }
2455 }
2456 }
2458 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
2459 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
2460 "off-channel TX");
2461 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2462 }
2464 if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2465 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2466 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2467 }
2469 /* default to 5000 since early versions of mac80211 don't set it */
2470 capa->max_remain_on_chan = 5000;
2472 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
2473 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
2475 if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2476 capa->max_remain_on_chan =
2477 nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2479 if (auth_supported)
2480 capa->flags |= WPA_DRIVER_FLAGS_SME;
2481 else if (!connect_supported) {
2482 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2483 "authentication/association or connect commands");
2484 info->error = 1;
2485 }
2487 if (p2p_go_supported && p2p_client_supported)
2488 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2489 if (p2p_concurrent) {
2490 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2491 "interface (driver advertised support)");
2492 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2493 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2494 }
2496 if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2497 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2498 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2500 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2501 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2502 capa->flags |=
2503 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2504 }
2505 }
2507 if (tb[NL80211_ATTR_DEVICE_AP_SME])
2508 info->device_ap_sme = 1;
2510 if (tb[NL80211_ATTR_FEATURE_FLAGS]) {
2511 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]);
2513 if (flags & NL80211_FEATURE_SK_TX_STATUS)
2514 info->data_tx_status = 1;
2515 }
2517 if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) {
2518 int protocols =
2519 nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
2520 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response "
2521 "offload in AP mode");
2522 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
2523 capa->probe_resp_offloads =
2524 probe_resp_offload_support(protocols);
2525 }
2527 return NL_SKIP;
2528 }
2531 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2532 struct wiphy_info_data *info)
2533 {
2534 struct nl_msg *msg;
2536 os_memset(info, 0, sizeof(*info));
2537 info->capa = &drv->capa;
2539 msg = nlmsg_alloc();
2540 if (!msg)
2541 return -1;
2543 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2545 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2547 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2548 return 0;
2549 msg = NULL;
2550 nla_put_failure:
2551 nlmsg_free(msg);
2552 return -1;
2553 }
2556 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2557 {
2558 struct wiphy_info_data info;
2559 if (wpa_driver_nl80211_get_info(drv, &info))
2560 return -1;
2562 if (info.error)
2563 return -1;
2565 drv->has_capability = 1;
2566 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2567 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2568 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2569 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2570 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2571 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2572 WPA_DRIVER_CAPA_ENC_WEP104 |
2573 WPA_DRIVER_CAPA_ENC_TKIP |
2574 WPA_DRIVER_CAPA_ENC_CCMP;
2575 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2576 WPA_DRIVER_AUTH_SHARED |
2577 WPA_DRIVER_AUTH_LEAP;
2579 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2580 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2581 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2582 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2584 drv->device_ap_sme = info.device_ap_sme;
2585 drv->poll_command_supported = info.poll_command_supported;
2586 drv->data_tx_status = info.data_tx_status;
2588 /*
2589 * If poll command is supported mac80211 is new enough to
2590 * have everything we need to not need monitor interfaces.
2591 */
2592 drv->use_monitor = !info.poll_command_supported;
2594 if (drv->device_ap_sme && drv->use_monitor) {
2595 /*
2596 * Non-mac80211 drivers may not support monitor interface.
2597 * Make sure we do not get stuck with incorrect capability here
2598 * by explicitly testing this.
2599 */
2600 if (!info.monitor_supported) {
2601 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
2602 "with device_ap_sme since no monitor mode "
2603 "support detected");
2604 drv->use_monitor = 0;
2605 }
2606 }
2608 /*
2609 * If we aren't going to use monitor interfaces, but the
2610 * driver doesn't support data TX status, we won't get TX
2611 * status for EAPOL frames.
2612 */
2613 if (!drv->use_monitor && !info.data_tx_status)
2614 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2616 return 0;
2617 }
2620 #ifdef ANDROID
2621 static int android_genl_ctrl_resolve(struct nl_handle *handle,
2622 const char *name)
2623 {
2624 /*
2625 * Android ICS has very minimal genl_ctrl_resolve() implementation, so
2626 * need to work around that.
2627 */
2628 struct nl_cache *cache = NULL;
2629 struct genl_family *nl80211 = NULL;
2630 int id = -1;
2632 if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
2633 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
2634 "netlink cache");
2635 goto fail;
2636 }
2638 nl80211 = genl_ctrl_search_by_name(cache, name);
2639 if (nl80211 == NULL)
2640 goto fail;
2642 id = genl_family_get_id(nl80211);
2644 fail:
2645 if (nl80211)
2646 genl_family_put(nl80211);
2647 if (cache)
2648 nl_cache_free(cache);
2650 return id;
2651 }
2652 #define genl_ctrl_resolve android_genl_ctrl_resolve
2653 #endif /* ANDROID */
2656 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2657 {
2658 int ret;
2660 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2661 if (global->nl_cb == NULL) {
2662 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2663 "callbacks");
2664 return -1;
2665 }
2667 global->nl = nl_create_handle(global->nl_cb, "nl");
2668 if (global->nl == NULL)
2669 goto err;
2671 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
2672 if (global->nl80211_id < 0) {
2673 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2674 "found");
2675 goto err;
2676 }
2678 global->nl_event = nl_create_handle(global->nl_cb, "event");
2679 if (global->nl_event == NULL)
2680 goto err;
2682 ret = nl_get_multicast_id(global, "nl80211", "scan");
2683 if (ret >= 0)
2684 ret = nl_socket_add_membership(global->nl_event, ret);
2685 if (ret < 0) {
2686 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2687 "membership for scan events: %d (%s)",
2688 ret, strerror(-ret));
2689 goto err;
2690 }
2692 ret = nl_get_multicast_id(global, "nl80211", "mlme");
2693 if (ret >= 0)
2694 ret = nl_socket_add_membership(global->nl_event, ret);
2695 if (ret < 0) {
2696 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2697 "membership for mlme events: %d (%s)",
2698 ret, strerror(-ret));
2699 goto err;
2700 }
2702 ret = nl_get_multicast_id(global, "nl80211", "regulatory");
2703 if (ret >= 0)
2704 ret = nl_socket_add_membership(global->nl_event, ret);
2705 if (ret < 0) {
2706 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2707 "membership for regulatory events: %d (%s)",
2708 ret, strerror(-ret));
2709 /* Continue without regulatory events */
2710 }
2712 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2713 no_seq_check, NULL);
2714 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2715 process_global_event, global);
2717 eloop_register_read_sock(nl_socket_get_fd(global->nl_event),
2718 wpa_driver_nl80211_event_receive,
2719 global->nl_cb, global->nl_event);
2721 return 0;
2723 err:
2724 nl_destroy_handles(&global->nl_event);
2725 nl_destroy_handles(&global->nl);
2726 nl_cb_put(global->nl_cb);
2727 global->nl_cb = NULL;
2728 return -1;
2729 }
2732 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2733 {
2734 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2735 if (!drv->nl_cb) {
2736 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
2737 return -1;
2738 }
2740 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2741 no_seq_check, NULL);
2742 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2743 process_drv_event, drv);
2745 return 0;
2746 }
2749 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2750 {
2751 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2752 /*
2753 * This may be for any interface; use ifdown event to disable
2754 * interface.
2755 */
2756 }
2759 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2760 {
2761 struct wpa_driver_nl80211_data *drv = ctx;
2762 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2763 if (linux_set_iface_flags(drv->global->ioctl_sock,
2764 drv->first_bss.ifname, 1)) {
2765 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2766 "after rfkill unblock");
2767 return;
2768 }
2769 /* rtnetlink ifup handler will report interface as enabled */
2770 }
2773 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2774 {
2775 /* Find phy (radio) to which this interface belongs */
2776 char buf[90], *pos;
2777 int f, rv;
2779 drv->phyname[0] = '\0';
2780 snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2781 drv->first_bss.ifname);
2782 f = open(buf, O_RDONLY);
2783 if (f < 0) {
2784 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2785 buf, strerror(errno));
2786 return;
2787 }
2789 rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2790 close(f);
2791 if (rv < 0) {
2792 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2793 buf, strerror(errno));
2794 return;
2795 }
2797 drv->phyname[rv] = '\0';
2798 pos = os_strchr(drv->phyname, '\n');
2799 if (pos)
2800 *pos = '\0';
2801 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2802 drv->first_bss.ifname, drv->phyname);
2803 }
2806 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
2807 void *eloop_ctx,
2808 void *handle)
2809 {
2810 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2811 u8 data[2048];
2812 struct msghdr msg;
2813 struct iovec entry;
2814 struct {
2815 struct cmsghdr cm;
2816 char control[512];
2817 } control;
2818 struct cmsghdr *cmsg;
2819 int res, found_ee = 0, found_wifi = 0, acked = 0;
2820 union wpa_event_data event;
2822 memset(&msg, 0, sizeof(msg));
2823 msg.msg_iov = &entry;
2824 msg.msg_iovlen = 1;
2825 entry.iov_base = data;
2826 entry.iov_len = sizeof(data);
2827 msg.msg_control = &control;
2828 msg.msg_controllen = sizeof(control);
2830 res = recvmsg(sock, &msg, MSG_ERRQUEUE);
2831 /* if error or not fitting 802.3 header, return */
2832 if (res < 14)
2833 return;
2835 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
2836 {
2837 if (cmsg->cmsg_level == SOL_SOCKET &&
2838 cmsg->cmsg_type == SCM_WIFI_STATUS) {
2839 int *ack;
2841 found_wifi = 1;
2842 ack = (void *)CMSG_DATA(cmsg);
2843 acked = *ack;
2844 }
2846 if (cmsg->cmsg_level == SOL_PACKET &&
2847 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
2848 struct sock_extended_err *err =
2849 (struct sock_extended_err *)CMSG_DATA(cmsg);
2851 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
2852 found_ee = 1;
2853 }
2854 }
2856 if (!found_ee || !found_wifi)
2857 return;
2859 memset(&event, 0, sizeof(event));
2860 event.eapol_tx_status.dst = data;
2861 event.eapol_tx_status.data = data + 14;
2862 event.eapol_tx_status.data_len = res - 14;
2863 event.eapol_tx_status.ack = acked;
2864 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
2865 }
2868 static int nl80211_init_bss(struct i802_bss *bss)
2869 {
2870 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2871 if (!bss->nl_cb)
2872 return -1;
2874 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2875 no_seq_check, NULL);
2876 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2877 process_bss_event, bss);
2879 return 0;
2880 }
2883 static void nl80211_destroy_bss(struct i802_bss *bss)
2884 {
2885 nl_cb_put(bss->nl_cb);
2886 bss->nl_cb = NULL;
2887 }
2890 /**
2891 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2892 * @ctx: context to be used when calling wpa_supplicant functions,
2893 * e.g., wpa_supplicant_event()
2894 * @ifname: interface name, e.g., wlan0
2895 * @global_priv: private driver global data from global_init()
2896 * Returns: Pointer to private data, %NULL on failure
2897 */
2898 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2899 void *global_priv)
2900 {
2901 struct wpa_driver_nl80211_data *drv;
2902 struct rfkill_config *rcfg;
2903 struct i802_bss *bss;
2905 if (global_priv == NULL)
2906 return NULL;
2907 drv = os_zalloc(sizeof(*drv));
2908 if (drv == NULL)
2909 return NULL;
2910 drv->global = global_priv;
2911 drv->ctx = ctx;
2912 bss = &drv->first_bss;
2913 bss->drv = drv;
2914 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2915 drv->monitor_ifidx = -1;
2916 drv->monitor_sock = -1;
2917 drv->eapol_tx_sock = -1;
2918 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2920 if (wpa_driver_nl80211_init_nl(drv)) {
2921 os_free(drv);
2922 return NULL;
2923 }
2925 if (nl80211_init_bss(bss))
2926 goto failed;
2928 nl80211_get_phy_name(drv);
2930 rcfg = os_zalloc(sizeof(*rcfg));
2931 if (rcfg == NULL)
2932 goto failed;
2933 rcfg->ctx = drv;
2934 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
2935 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
2936 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
2937 drv->rfkill = rfkill_init(rcfg);
2938 if (drv->rfkill == NULL) {
2939 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
2940 os_free(rcfg);
2941 }
2943 if (wpa_driver_nl80211_finish_drv_init(drv))
2944 goto failed;
2946 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
2947 if (drv->eapol_tx_sock < 0)
2948 goto failed;
2950 if (drv->data_tx_status) {
2951 int enabled = 1;
2953 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
2954 &enabled, sizeof(enabled)) < 0) {
2955 wpa_printf(MSG_DEBUG,
2956 "nl80211: wifi status sockopt failed\n");
2957 drv->data_tx_status = 0;
2958 if (!drv->use_monitor)
2959 drv->capa.flags &=
2960 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2961 } else {
2962 eloop_register_read_sock(drv->eapol_tx_sock,
2963 wpa_driver_nl80211_handle_eapol_tx_status,
2964 drv, NULL);
2965 }
2966 }
2968 if (drv->global) {
2969 dl_list_add(&drv->global->interfaces, &drv->list);
2970 drv->in_interface_list = 1;
2971 }
2973 return bss;
2975 failed:
2976 wpa_driver_nl80211_deinit(bss);
2977 return NULL;
2978 }
2981 static int nl80211_register_frame(struct i802_bss *bss,
2982 struct nl_handle *nl_handle,
2983 u16 type, const u8 *match, size_t match_len)
2984 {
2985 struct wpa_driver_nl80211_data *drv = bss->drv;
2986 struct nl_msg *msg;
2987 int ret = -1;
2989 msg = nlmsg_alloc();
2990 if (!msg)
2991 return -1;
2993 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p",
2994 type, nl_handle);
2995 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
2996 match, match_len);
2998 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
3000 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3001 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
3002 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
3004 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
3005 msg = NULL;
3006 if (ret) {
3007 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
3008 "failed (type=%u): ret=%d (%s)",
3009 type, ret, strerror(-ret));
3010 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3011 match, match_len);
3012 goto nla_put_failure;
3013 }
3014 ret = 0;
3015 nla_put_failure:
3016 nlmsg_free(msg);
3017 return ret;
3018 }
3021 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
3022 {
3023 struct wpa_driver_nl80211_data *drv = bss->drv;
3025 if (bss->nl_mgmt) {
3026 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
3027 "already on! (nl_mgmt=%p)", bss->nl_mgmt);
3028 return -1;
3029 }
3031 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
3032 if (bss->nl_mgmt == NULL)
3033 return -1;
3035 eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt),
3036 wpa_driver_nl80211_event_receive, bss->nl_cb,
3037 bss->nl_mgmt);
3039 return 0;
3040 }
3043 static int nl80211_register_action_frame(struct i802_bss *bss,
3044 const u8 *match, size_t match_len)
3045 {
3046 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
3047 return nl80211_register_frame(bss, bss->nl_mgmt,
3048 type, match, match_len);
3049 }
3052 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
3053 {
3054 struct wpa_driver_nl80211_data *drv = bss->drv;
3056 if (nl80211_alloc_mgmt_handle(bss))
3057 return -1;
3058 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
3059 "handle %p", bss->nl_mgmt);
3061 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
3062 /* GAS Initial Request */
3063 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
3064 return -1;
3065 /* GAS Initial Response */
3066 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
3067 return -1;
3068 /* GAS Comeback Request */
3069 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
3070 return -1;
3071 /* GAS Comeback Response */
3072 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
3073 return -1;
3074 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
3075 #ifdef CONFIG_P2P
3076 /* P2P Public Action */
3077 if (nl80211_register_action_frame(bss,
3078 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
3079 6) < 0)
3080 return -1;
3081 /* P2P Action */
3082 if (nl80211_register_action_frame(bss,
3083 (u8 *) "\x7f\x50\x6f\x9a\x09",
3084 5) < 0)
3085 return -1;
3086 #endif /* CONFIG_P2P */
3087 #ifdef CONFIG_IEEE80211W
3088 /* SA Query Response */
3089 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
3090 return -1;
3091 #endif /* CONFIG_IEEE80211W */
3092 #ifdef CONFIG_TDLS
3093 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
3094 /* TDLS Discovery Response */
3095 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
3096 0)
3097 return -1;
3098 }
3099 #endif /* CONFIG_TDLS */
3101 /* FT Action frames */
3102 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
3103 return -1;
3104 else
3105 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
3106 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
3108 /* WNM - BSS Transition Management Request */
3109 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
3110 return -1;
3112 return 0;
3113 }
3116 static int nl80211_register_spurious_class3(struct i802_bss *bss)
3117 {
3118 struct wpa_driver_nl80211_data *drv = bss->drv;
3119 struct nl_msg *msg;
3120 int ret = -1;
3122 msg = nlmsg_alloc();
3123 if (!msg)
3124 return -1;
3126 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
3128 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3130 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
3131 msg = NULL;
3132 if (ret) {
3133 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
3134 "failed: ret=%d (%s)",
3135 ret, strerror(-ret));
3136 goto nla_put_failure;
3137 }
3138 ret = 0;
3139 nla_put_failure:
3140 nlmsg_free(msg);
3141 return ret;
3142 }
3145 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
3146 {
3147 static const int stypes[] = {
3148 WLAN_FC_STYPE_AUTH,
3149 WLAN_FC_STYPE_ASSOC_REQ,
3150 WLAN_FC_STYPE_REASSOC_REQ,
3151 WLAN_FC_STYPE_DISASSOC,
3152 WLAN_FC_STYPE_DEAUTH,
3153 WLAN_FC_STYPE_ACTION,
3154 WLAN_FC_STYPE_PROBE_REQ,
3155 /* Beacon doesn't work as mac80211 doesn't currently allow
3156 * it, but it wouldn't really be the right thing anyway as
3157 * it isn't per interface ... maybe just dump the scan
3158 * results periodically for OLBC?
3159 */
3160 // WLAN_FC_STYPE_BEACON,
3161 };
3162 unsigned int i;
3164 if (nl80211_alloc_mgmt_handle(bss))
3165 return -1;
3166 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3167 "handle %p", bss->nl_mgmt);
3169 for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) {
3170 if (nl80211_register_frame(bss, bss->nl_mgmt,
3171 (WLAN_FC_TYPE_MGMT << 2) |
3172 (stypes[i] << 4),
3173 NULL, 0) < 0) {
3174 goto out_err;
3175 }
3176 }
3178 if (nl80211_register_spurious_class3(bss))
3179 goto out_err;
3181 if (nl80211_get_wiphy_data_ap(bss) == NULL)
3182 goto out_err;
3184 return 0;
3186 out_err:
3187 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3188 nl_destroy_handles(&bss->nl_mgmt);
3189 return -1;
3190 }
3193 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
3194 {
3195 if (nl80211_alloc_mgmt_handle(bss))
3196 return -1;
3197 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3198 "handle %p (device SME)", bss->nl_mgmt);
3200 if (nl80211_register_frame(bss, bss->nl_mgmt,
3201 (WLAN_FC_TYPE_MGMT << 2) |
3202 (WLAN_FC_STYPE_ACTION << 4),
3203 NULL, 0) < 0)
3204 goto out_err;
3206 return 0;
3208 out_err:
3209 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3210 nl_destroy_handles(&bss->nl_mgmt);
3211 return -1;
3212 }
3215 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
3216 {
3217 if (bss->nl_mgmt == NULL)
3218 return;
3219 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
3220 "(%s)", bss->nl_mgmt, reason);
3221 eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3222 nl_destroy_handles(&bss->nl_mgmt);
3224 nl80211_put_wiphy_data_ap(bss);
3225 }
3228 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
3229 {
3230 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
3231 }
3234 static int
3235 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
3236 {
3237 struct i802_bss *bss = &drv->first_bss;
3238 int send_rfkill_event = 0;
3240 drv->ifindex = if_nametoindex(bss->ifname);
3241 drv->first_bss.ifindex = drv->ifindex;
3243 #ifndef HOSTAPD
3244 /*
3245 * Make sure the interface starts up in station mode unless this is a
3246 * dynamically added interface (e.g., P2P) that was already configured
3247 * with proper iftype.
3248 */
3249 if (drv->ifindex != drv->global->if_add_ifindex &&
3250 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
3251 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
3252 "use managed mode");
3253 return -1;
3254 }
3256 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
3257 if (rfkill_is_blocked(drv->rfkill)) {
3258 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
3259 "interface '%s' due to rfkill",
3260 bss->ifname);
3261 drv->if_disabled = 1;
3262 send_rfkill_event = 1;
3263 } else {
3264 wpa_printf(MSG_ERROR, "nl80211: Could not set "
3265 "interface '%s' UP", bss->ifname);
3266 return -1;
3267 }
3268 }
3270 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
3271 1, IF_OPER_DORMANT);
3272 #endif /* HOSTAPD */
3274 if (wpa_driver_nl80211_capa(drv))
3275 return -1;
3277 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
3278 bss->addr))
3279 return -1;
3281 if (send_rfkill_event) {
3282 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
3283 drv, drv->ctx);
3284 }
3286 return 0;
3287 }
3290 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
3291 {
3292 struct nl_msg *msg;
3294 msg = nlmsg_alloc();
3295 if (!msg)
3296 return -ENOMEM;
3298 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
3299 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3301 return send_and_recv_msgs(drv, msg, NULL, NULL);
3302 nla_put_failure:
3303 nlmsg_free(msg);
3304 return -ENOBUFS;
3305 }
3308 /**
3309 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
3310 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3311 *
3312 * Shut down driver interface and processing of driver events. Free
3313 * private data buffer if one was allocated in wpa_driver_nl80211_init().
3314 */
3315 static void wpa_driver_nl80211_deinit(void *priv)
3316 {
3317 struct i802_bss *bss = priv;
3318 struct wpa_driver_nl80211_data *drv = bss->drv;
3320 if (drv->data_tx_status)
3321 eloop_unregister_read_sock(drv->eapol_tx_sock);
3322 if (drv->eapol_tx_sock >= 0)
3323 close(drv->eapol_tx_sock);
3325 if (bss->nl_preq)
3326 wpa_driver_nl80211_probe_req_report(bss, 0);
3327 if (bss->added_if_into_bridge) {
3328 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
3329 bss->ifname) < 0)
3330 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3331 "interface %s from bridge %s: %s",
3332 bss->ifname, bss->brname, strerror(errno));
3333 }
3334 if (bss->added_bridge) {
3335 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
3336 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3337 "bridge %s: %s",
3338 bss->brname, strerror(errno));
3339 }
3341 nl80211_remove_monitor_interface(drv);
3343 if (is_ap_interface(drv->nlmode))
3344 wpa_driver_nl80211_del_beacon(drv);
3346 #ifdef HOSTAPD
3347 if (drv->last_freq_ht) {
3348 /* Clear HT flags from the driver */
3349 struct hostapd_freq_params freq;
3350 os_memset(&freq, 0, sizeof(freq));
3351 freq.freq = drv->last_freq;
3352 i802_set_freq(priv, &freq);
3353 }
3355 if (drv->eapol_sock >= 0) {
3356 eloop_unregister_read_sock(drv->eapol_sock);
3357 close(drv->eapol_sock);
3358 }
3360 if (drv->if_indices != drv->default_if_indices)
3361 os_free(drv->if_indices);
3362 #endif /* HOSTAPD */
3364 if (drv->disabled_11b_rates)
3365 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3367 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
3368 IF_OPER_UP);
3369 rfkill_deinit(drv->rfkill);
3371 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3373 (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
3374 wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
3375 nl80211_mgmt_unsubscribe(bss, "deinit");
3377 nl_cb_put(drv->nl_cb);
3379 nl80211_destroy_bss(&drv->first_bss);
3381 os_free(drv->filter_ssids);
3383 os_free(drv->auth_ie);
3385 if (drv->in_interface_list)
3386 dl_list_del(&drv->list);
3388 os_free(drv);
3389 }
3392 /**
3393 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
3394 * @eloop_ctx: Driver private data
3395 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
3396 *
3397 * This function can be used as registered timeout when starting a scan to
3398 * generate a scan completed event if the driver does not report this.
3399 */
3400 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
3401 {
3402 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3403 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
3404 wpa_driver_nl80211_set_mode(&drv->first_bss,
3405 drv->ap_scan_as_station);
3406 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
3407 }
3408 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
3409 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
3410 }
3413 /**
3414 * wpa_driver_nl80211_scan - Request the driver to initiate scan
3415 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3416 * @params: Scan parameters
3417 * Returns: 0 on success, -1 on failure
3418 */
3419 static int wpa_driver_nl80211_scan(void *priv,
3420 struct wpa_driver_scan_params *params)
3421 {
3422 struct i802_bss *bss = priv;
3423 struct wpa_driver_nl80211_data *drv = bss->drv;
3424 int ret = 0, timeout;
3425 struct nl_msg *msg, *ssids, *freqs, *rates;
3426 size_t i;
3428 drv->scan_for_auth = 0;
3430 msg = nlmsg_alloc();
3431 ssids = nlmsg_alloc();
3432 freqs = nlmsg_alloc();
3433 rates = nlmsg_alloc();
3434 if (!msg || !ssids || !freqs || !rates) {
3435 nlmsg_free(msg);
3436 nlmsg_free(ssids);
3437 nlmsg_free(freqs);
3438 nlmsg_free(rates);
3439 return -1;
3440 }
3442 os_free(drv->filter_ssids);
3443 drv->filter_ssids = params->filter_ssids;
3444 params->filter_ssids = NULL;
3445 drv->num_filter_ssids = params->num_filter_ssids;
3447 nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN);
3449 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3451 for (i = 0; i < params->num_ssids; i++) {
3452 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
3453 params->ssids[i].ssid,
3454 params->ssids[i].ssid_len);
3455 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
3456 params->ssids[i].ssid);
3457 }
3458 if (params->num_ssids)
3459 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3461 if (params->extra_ies) {
3462 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
3463 params->extra_ies, params->extra_ies_len);
3464 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
3465 params->extra_ies);
3466 }
3468 if (params->freqs) {
3469 for (i = 0; params->freqs[i]; i++) {
3470 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3471 "MHz", params->freqs[i]);
3472 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
3473 }
3474 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
3475 }
3477 if (params->p2p_probe) {
3478 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
3480 /*
3481 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
3482 * by masking out everything else apart from the OFDM rates 6,
3483 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
3484 * rates are left enabled.
3485 */
3486 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
3487 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
3488 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates);
3490 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
3491 }
3493 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3494 msg = NULL;
3495 if (ret) {
3496 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
3497 "(%s)", ret, strerror(-ret));
3498 #ifdef HOSTAPD
3499 if (is_ap_interface(drv->nlmode)) {
3500 /*
3501 * mac80211 does not allow scan requests in AP mode, so
3502 * try to do this in station mode.
3503 */
3504 if (wpa_driver_nl80211_set_mode(
3505 bss, NL80211_IFTYPE_STATION))
3506 goto nla_put_failure;
3508 if (wpa_driver_nl80211_scan(drv, params)) {
3509 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
3510 goto nla_put_failure;
3511 }
3513 /* Restore AP mode when processing scan results */
3514 drv->ap_scan_as_station = drv->nlmode;
3515 ret = 0;
3516 } else
3517 goto nla_put_failure;
3518 #else /* HOSTAPD */
3519 goto nla_put_failure;
3520 #endif /* HOSTAPD */
3521 }
3523 /* Not all drivers generate "scan completed" wireless event, so try to
3524 * read results after a timeout. */
3525 timeout = 10;
3526 if (drv->scan_complete_events) {
3527 /*
3528 * The driver seems to deliver events to notify when scan is
3529 * complete, so use longer timeout to avoid race conditions
3530 * with scanning and following association request.
3531 */
3532 timeout = 30;
3533 }
3534 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
3535 "seconds", ret, timeout);
3536 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3537 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
3538 drv, drv->ctx);
3540 nla_put_failure:
3541 nlmsg_free(ssids);
3542 nlmsg_free(msg);
3543 nlmsg_free(freqs);
3544 nlmsg_free(rates);
3545 return ret;
3546 }
3549 /**
3550 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
3551 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3552 * @params: Scan parameters
3553 * @interval: Interval between scan cycles in milliseconds
3554 * Returns: 0 on success, -1 on failure or if not supported
3555 */
3556 static int wpa_driver_nl80211_sched_scan(void *priv,
3557 struct wpa_driver_scan_params *params,
3558 u32 interval)
3559 {
3560 struct i802_bss *bss = priv;
3561 struct wpa_driver_nl80211_data *drv = bss->drv;
3562 int ret = 0;
3563 struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets;
3564 size_t i;
3566 #ifdef ANDROID
3567 if (!drv->capa.sched_scan_supported)
3568 return android_pno_start(bss, params);
3569 #endif /* ANDROID */
3571 msg = nlmsg_alloc();
3572 ssids = nlmsg_alloc();
3573 freqs = nlmsg_alloc();
3574 if (!msg || !ssids || !freqs) {
3575 nlmsg_free(msg);
3576 nlmsg_free(ssids);
3577 nlmsg_free(freqs);
3578 return -1;
3579 }
3581 os_free(drv->filter_ssids);
3582 drv->filter_ssids = params->filter_ssids;
3583 params->filter_ssids = NULL;
3584 drv->num_filter_ssids = params->num_filter_ssids;
3586 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN);
3588 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3590 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
3592 if (drv->num_filter_ssids &&
3593 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) {
3594 match_sets = nlmsg_alloc();
3596 for (i = 0; i < drv->num_filter_ssids; i++) {
3597 wpa_hexdump_ascii(MSG_MSGDUMP,
3598 "nl80211: Sched scan filter SSID",
3599 drv->filter_ssids[i].ssid,
3600 drv->filter_ssids[i].ssid_len);
3602 match_set_ssid = nlmsg_alloc();
3603 nla_put(match_set_ssid,
3604 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
3605 drv->filter_ssids[i].ssid_len,
3606 drv->filter_ssids[i].ssid);
3608 nla_put_nested(match_sets, i + 1, match_set_ssid);
3610 nlmsg_free(match_set_ssid);
3611 }
3613 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
3614 match_sets);
3615 nlmsg_free(match_sets);
3616 }
3618 for (i = 0; i < params->num_ssids; i++) {
3619 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID",
3620 params->ssids[i].ssid,
3621 params->ssids[i].ssid_len);
3622 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
3623 params->ssids[i].ssid);
3624 }
3625 if (params->num_ssids)
3626 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3628 if (params->extra_ies) {
3629 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs",
3630 params->extra_ies, params->extra_ies_len);
3631 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
3632 params->extra_ies);
3633 }
3635 if (params->freqs) {
3636 for (i = 0; params->freqs[i]; i++) {
3637 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3638 "MHz", params->freqs[i]);
3639 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
3640 }
3641 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
3642 }
3644 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3646 /* TODO: if we get an error here, we should fall back to normal scan */
3648 msg = NULL;
3649 if (ret) {
3650 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
3651 "ret=%d (%s)", ret, strerror(-ret));
3652 goto nla_put_failure;
3653 }
3655 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
3656 "scan interval %d msec", ret, interval);
3658 nla_put_failure:
3659 nlmsg_free(ssids);
3660 nlmsg_free(msg);
3661 nlmsg_free(freqs);
3662 return ret;
3663 }
3666 /**
3667 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
3668 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3669 * Returns: 0 on success, -1 on failure or if not supported
3670 */
3671 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
3672 {
3673 struct i802_bss *bss = priv;
3674 struct wpa_driver_nl80211_data *drv = bss->drv;
3675 int ret = 0;
3676 struct nl_msg *msg;
3678 #ifdef ANDROID
3679 if (!drv->capa.sched_scan_supported)
3680 return android_pno_stop(bss);
3681 #endif /* ANDROID */
3683 msg = nlmsg_alloc();
3684 if (!msg)
3685 return -1;
3687 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
3689 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3691 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3692 msg = NULL;
3693 if (ret) {
3694 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
3695 "ret=%d (%s)", ret, strerror(-ret));
3696 goto nla_put_failure;
3697 }
3699 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
3701 nla_put_failure:
3702 nlmsg_free(msg);
3703 return ret;
3704 }
3707 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
3708 {
3709 const u8 *end, *pos;
3711 if (ies == NULL)
3712 return NULL;
3714 pos = ies;
3715 end = ies + ies_len;
3717 while (pos + 1 < end) {
3718 if (pos + 2 + pos[1] > end)
3719 break;
3720 if (pos[0] == ie)
3721 return pos;
3722 pos += 2 + pos[1];
3723 }
3725 return NULL;
3726 }
3729 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
3730 const u8 *ie, size_t ie_len)
3731 {
3732 const u8 *ssid;
3733 size_t i;
3735 if (drv->filter_ssids == NULL)
3736 return 0;
3738 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
3739 if (ssid == NULL)
3740 return 1;
3742 for (i = 0; i < drv->num_filter_ssids; i++) {
3743 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
3744 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
3745 0)
3746 return 0;
3747 }
3749 return 1;
3750 }
3753 static int bss_info_handler(struct nl_msg *msg, void *arg)
3754 {
3755 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3756 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3757 struct nlattr *bss[NL80211_BSS_MAX + 1];
3758 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
3759 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
3760 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
3761 [NL80211_BSS_TSF] = { .type = NLA_U64 },
3762 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
3763 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
3764 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
3765 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
3766 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
3767 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
3768 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
3769 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
3770 };
3771 struct nl80211_bss_info_arg *_arg = arg;
3772 struct wpa_scan_results *res = _arg->res;
3773 struct wpa_scan_res **tmp;
3774 struct wpa_scan_res *r;
3775 const u8 *ie, *beacon_ie;
3776 size_t ie_len, beacon_ie_len;
3777 u8 *pos;
3778 size_t i;
3780 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3781 genlmsg_attrlen(gnlh, 0), NULL);
3782 if (!tb[NL80211_ATTR_BSS])
3783 return NL_SKIP;
3784 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
3785 bss_policy))
3786 return NL_SKIP;
3787 if (bss[NL80211_BSS_STATUS]) {
3788 enum nl80211_bss_status status;
3789 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3790 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3791 bss[NL80211_BSS_FREQUENCY]) {
3792 _arg->assoc_freq =
3793 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3794 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
3795 _arg->assoc_freq);
3796 }
3797 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3798 bss[NL80211_BSS_BSSID]) {
3799 os_memcpy(_arg->assoc_bssid,
3800 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
3801 wpa_printf(MSG_DEBUG, "nl80211: Associated with "
3802 MACSTR, MAC2STR(_arg->assoc_bssid));
3803 }
3804 }
3805 if (!res)
3806 return NL_SKIP;
3807 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
3808 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3809 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3810 } else {
3811 ie = NULL;
3812 ie_len = 0;
3813 }
3814 if (bss[NL80211_BSS_BEACON_IES]) {
3815 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
3816 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
3817 } else {
3818 beacon_ie = NULL;
3819 beacon_ie_len = 0;
3820 }
3822 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3823 ie ? ie_len : beacon_ie_len))
3824 return NL_SKIP;
3826 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3827 if (r == NULL)
3828 return NL_SKIP;
3829 if (bss[NL80211_BSS_BSSID])
3830 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3831 ETH_ALEN);
3832 if (bss[NL80211_BSS_FREQUENCY])
3833 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3834 if (bss[NL80211_BSS_BEACON_INTERVAL])
3835 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3836 if (bss[NL80211_BSS_CAPABILITY])
3837 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3838 r->flags |= WPA_SCAN_NOISE_INVALID;
3839 if (bss[NL80211_BSS_SIGNAL_MBM]) {
3840 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3841 r->level /= 100; /* mBm to dBm */
3842 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3843 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3844 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3845 r->flags |= WPA_SCAN_QUAL_INVALID;
3846 } else
3847 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3848 if (bss[NL80211_BSS_TSF])
3849 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3850 if (bss[NL80211_BSS_SEEN_MS_AGO])
3851 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3852 r->ie_len = ie_len;
3853 pos = (u8 *) (r + 1);
3854 if (ie) {
3855 os_memcpy(pos, ie, ie_len);
3856 pos += ie_len;
3857 }
3858 r->beacon_ie_len = beacon_ie_len;
3859 if (beacon_ie)
3860 os_memcpy(pos, beacon_ie, beacon_ie_len);
3862 if (bss[NL80211_BSS_STATUS]) {
3863 enum nl80211_bss_status status;
3864 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3865 switch (status) {
3866 case NL80211_BSS_STATUS_AUTHENTICATED:
3867 r->flags |= WPA_SCAN_AUTHENTICATED;
3868 break;
3869 case NL80211_BSS_STATUS_ASSOCIATED:
3870 r->flags |= WPA_SCAN_ASSOCIATED;
3871 break;
3872 default:
3873 break;
3874 }
3875 }
3877 /*
3878 * cfg80211 maintains separate BSS table entries for APs if the same
3879 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3880 * not use frequency as a separate key in the BSS table, so filter out
3881 * duplicated entries. Prefer associated BSS entry in such a case in
3882 * order to get the correct frequency into the BSS table.
3883 */
3884 for (i = 0; i < res->num; i++) {
3885 const u8 *s1, *s2;
3886 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3887 continue;
3889 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3890 res->res[i]->ie_len, WLAN_EID_SSID);
3891 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3892 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3893 os_memcmp(s1, s2, 2 + s1[1]) != 0)
3894 continue;
3896 /* Same BSSID,SSID was already included in scan results */
3897 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3898 "for " MACSTR, MAC2STR(r->bssid));
3900 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3901 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3902 os_free(res->res[i]);
3903 res->res[i] = r;
3904 } else
3905 os_free(r);
3906 return NL_SKIP;
3907 }
3909 tmp = os_realloc(res->res,
3910 (res->num + 1) * sizeof(struct wpa_scan_res *));
3911 if (tmp == NULL) {
3912 os_free(r);
3913 return NL_SKIP;
3914 }
3915 tmp[res->num++] = r;
3916 res->res = tmp;
3918 return NL_SKIP;
3919 }
3922 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
3923 const u8 *addr)
3924 {
3925 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
3926 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
3927 "mismatch (" MACSTR ")", MAC2STR(addr));
3928 wpa_driver_nl80211_mlme(drv, addr,
3929 NL80211_CMD_DEAUTHENTICATE,
3930 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
3931 }
3932 }
3935 static void wpa_driver_nl80211_check_bss_status(
3936 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
3937 {
3938 size_t i;
3940 for (i = 0; i < res->num; i++) {
3941 struct wpa_scan_res *r = res->res[i];
3942 if (r->flags & WPA_SCAN_AUTHENTICATED) {
3943 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3944 "indicates BSS status with " MACSTR
3945 " as authenticated",
3946 MAC2STR(r->bssid));
3947 if (is_sta_interface(drv->nlmode) &&
3948 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
3949 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
3950 0) {
3951 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
3952 " in local state (auth=" MACSTR
3953 " assoc=" MACSTR ")",
3954 MAC2STR(drv->auth_bssid),
3955 MAC2STR(drv->bssid));
3956 clear_state_mismatch(drv, r->bssid);
3957 }
3958 }
3960 if (r->flags & WPA_SCAN_ASSOCIATED) {
3961 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
3962 "indicate BSS status with " MACSTR
3963 " as associated",
3964 MAC2STR(r->bssid));
3965 if (is_sta_interface(drv->nlmode) &&
3966 !drv->associated) {
3967 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3968 "(not associated) does not match "
3969 "with BSS state");
3970 clear_state_mismatch(drv, r->bssid);
3971 } else if (is_sta_interface(drv->nlmode) &&
3972 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
3973 0) {
3974 wpa_printf(MSG_DEBUG, "nl80211: Local state "
3975 "(associated with " MACSTR ") does "
3976 "not match with BSS state",
3977 MAC2STR(drv->bssid));
3978 clear_state_mismatch(drv, r->bssid);
3979 clear_state_mismatch(drv, drv->bssid);
3980 }
3981 }
3982 }
3983 }
3986 static struct wpa_scan_results *
3987 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3988 {
3989 struct nl_msg *msg;
3990 struct wpa_scan_results *res;
3991 int ret;
3992 struct nl80211_bss_info_arg arg;
3994 res = os_zalloc(sizeof(*res));
3995 if (res == NULL)
3996 return NULL;
3997 msg = nlmsg_alloc();
3998 if (!msg)
3999 goto nla_put_failure;
4001 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
4002 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4004 arg.drv = drv;
4005 arg.res = res;
4006 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
4007 msg = NULL;
4008 if (ret == 0) {
4009 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
4010 "BSSes)", (unsigned long) res->num);
4011 nl80211_get_noise_for_scan_results(drv, res);
4012 return res;
4013 }
4014 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
4015 "(%s)", ret, strerror(-ret));
4016 nla_put_failure:
4017 nlmsg_free(msg);
4018 wpa_scan_results_free(res);
4019 return NULL;
4020 }
4023 /**
4024 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
4025 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
4026 * Returns: Scan results on success, -1 on failure
4027 */
4028 static struct wpa_scan_results *
4029 wpa_driver_nl80211_get_scan_results(void *priv)
4030 {
4031 struct i802_bss *bss = priv;
4032 struct wpa_driver_nl80211_data *drv = bss->drv;
4033 struct wpa_scan_results *res;
4035 res = nl80211_get_scan_results(drv);
4036 if (res)
4037 wpa_driver_nl80211_check_bss_status(drv, res);
4038 return res;
4039 }
4042 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
4043 {
4044 struct wpa_scan_results *res;
4045 size_t i;
4047 res = nl80211_get_scan_results(drv);
4048 if (res == NULL) {
4049 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
4050 return;
4051 }
4053 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
4054 for (i = 0; i < res->num; i++) {
4055 struct wpa_scan_res *r = res->res[i];
4056 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
4057 (int) i, (int) res->num, MAC2STR(r->bssid),
4058 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
4059 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
4060 }
4062 wpa_scan_results_free(res);
4063 }
4066 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
4067 enum wpa_alg alg, const u8 *addr,
4068 int key_idx, int set_tx,
4069 const u8 *seq, size_t seq_len,
4070 const u8 *key, size_t key_len)
4071 {
4072 struct i802_bss *bss = priv;
4073 struct wpa_driver_nl80211_data *drv = bss->drv;
4074 int ifindex = if_nametoindex(ifname);
4075 struct nl_msg *msg;
4076 int ret;
4078 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
4079 "set_tx=%d seq_len=%lu key_len=%lu",
4080 __func__, ifindex, alg, addr, key_idx, set_tx,
4081 (unsigned long) seq_len, (unsigned long) key_len);
4082 #ifdef CONFIG_TDLS
4083 if (key_idx == -1)
4084 key_idx = 0;
4085 #endif /* CONFIG_TDLS */
4087 msg = nlmsg_alloc();
4088 if (!msg)
4089 return -ENOMEM;
4091 if (alg == WPA_ALG_NONE) {
4092 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
4093 } else {
4094 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
4095 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
4096 switch (alg) {
4097 case WPA_ALG_WEP:
4098 if (key_len == 5)
4099 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4100 WLAN_CIPHER_SUITE_WEP40);
4101 else
4102 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4103 WLAN_CIPHER_SUITE_WEP104);
4104 break;
4105 case WPA_ALG_TKIP:
4106 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4107 WLAN_CIPHER_SUITE_TKIP);
4108 break;
4109 case WPA_ALG_CCMP:
4110 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4111 WLAN_CIPHER_SUITE_CCMP);
4112 break;
4113 case WPA_ALG_IGTK:
4114 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4115 WLAN_CIPHER_SUITE_AES_CMAC);
4116 break;
4117 default:
4118 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4119 "algorithm %d", __func__, alg);
4120 nlmsg_free(msg);
4121 return -1;
4122 }
4123 }
4125 if (seq && seq_len)
4126 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
4128 if (addr && !is_broadcast_ether_addr(addr)) {
4129 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
4130 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4132 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
4133 wpa_printf(MSG_DEBUG, " RSN IBSS RX GTK");
4134 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
4135 NL80211_KEYTYPE_GROUP);
4136 }
4137 } else if (addr && is_broadcast_ether_addr(addr)) {
4138 struct nl_msg *types;
4139 int err;
4140 wpa_printf(MSG_DEBUG, " broadcast key");
4141 types = nlmsg_alloc();
4142 if (!types)
4143 goto nla_put_failure;
4144 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4145 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4146 types);
4147 nlmsg_free(types);
4148 if (err)
4149 goto nla_put_failure;
4150 }
4151 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4152 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4154 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4155 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
4156 ret = 0;
4157 if (ret)
4158 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
4159 ret, strerror(-ret));
4161 /*
4162 * If we failed or don't need to set the default TX key (below),
4163 * we're done here.
4164 */
4165 if (ret || !set_tx || alg == WPA_ALG_NONE)
4166 return ret;
4167 if (is_ap_interface(drv->nlmode) && addr &&
4168 !is_broadcast_ether_addr(addr))
4169 return ret;
4171 msg = nlmsg_alloc();
4172 if (!msg)
4173 return -ENOMEM;
4175 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
4176 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4177 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4178 if (alg == WPA_ALG_IGTK)
4179 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
4180 else
4181 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
4182 if (addr && is_broadcast_ether_addr(addr)) {
4183 struct nl_msg *types;
4184 int err;
4185 types = nlmsg_alloc();
4186 if (!types)
4187 goto nla_put_failure;
4188 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4189 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4190 types);
4191 nlmsg_free(types);
4192 if (err)
4193 goto nla_put_failure;
4194 } else if (addr) {
4195 struct nl_msg *types;
4196 int err;
4197 types = nlmsg_alloc();
4198 if (!types)
4199 goto nla_put_failure;
4200 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
4201 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4202 types);
4203 nlmsg_free(types);
4204 if (err)
4205 goto nla_put_failure;
4206 }
4208 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4209 if (ret == -ENOENT)
4210 ret = 0;
4211 if (ret)
4212 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
4213 "err=%d %s)", ret, strerror(-ret));
4214 return ret;
4216 nla_put_failure:
4217 nlmsg_free(msg);
4218 return -ENOBUFS;
4219 }
4222 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
4223 int key_idx, int defkey,
4224 const u8 *seq, size_t seq_len,
4225 const u8 *key, size_t key_len)
4226 {
4227 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
4228 if (!key_attr)
4229 return -1;
4231 if (defkey && alg == WPA_ALG_IGTK)
4232 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
4233 else if (defkey)
4234 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4236 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
4238 switch (alg) {
4239 case WPA_ALG_WEP:
4240 if (key_len == 5)
4241 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4242 WLAN_CIPHER_SUITE_WEP40);
4243 else
4244 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4245 WLAN_CIPHER_SUITE_WEP104);
4246 break;
4247 case WPA_ALG_TKIP:
4248 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
4249 break;
4250 case WPA_ALG_CCMP:
4251 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
4252 break;
4253 case WPA_ALG_IGTK:
4254 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4255 WLAN_CIPHER_SUITE_AES_CMAC);
4256 break;
4257 default:
4258 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4259 "algorithm %d", __func__, alg);
4260 return -1;
4261 }
4263 if (seq && seq_len)
4264 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
4266 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
4268 nla_nest_end(msg, key_attr);
4270 return 0;
4271 nla_put_failure:
4272 return -1;
4273 }
4276 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
4277 struct nl_msg *msg)
4278 {
4279 int i, privacy = 0;
4280 struct nlattr *nl_keys, *nl_key;
4282 for (i = 0; i < 4; i++) {
4283 if (!params->wep_key[i])
4284 continue;
4285 privacy = 1;
4286 break;
4287 }
4288 if (params->wps == WPS_MODE_PRIVACY)
4289 privacy = 1;
4290 if (params->pairwise_suite &&
4291 params->pairwise_suite != WPA_CIPHER_NONE)
4292 privacy = 1;
4294 if (!privacy)
4295 return 0;
4297 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4299 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
4300 if (!nl_keys)
4301 goto nla_put_failure;
4303 for (i = 0; i < 4; i++) {
4304 if (!params->wep_key[i])
4305 continue;
4307 nl_key = nla_nest_start(msg, i);
4308 if (!nl_key)
4309 goto nla_put_failure;
4311 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
4312 params->wep_key[i]);
4313 if (params->wep_key_len[i] == 5)
4314 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4315 WLAN_CIPHER_SUITE_WEP40);
4316 else
4317 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4318 WLAN_CIPHER_SUITE_WEP104);
4320 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
4322 if (i == params->wep_tx_keyidx)
4323 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4325 nla_nest_end(msg, nl_key);
4326 }
4327 nla_nest_end(msg, nl_keys);
4329 return 0;
4331 nla_put_failure:
4332 return -ENOBUFS;
4333 }
4336 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
4337 const u8 *addr, int cmd, u16 reason_code,
4338 int local_state_change)
4339 {
4340 int ret = -1;
4341 struct nl_msg *msg;
4343 msg = nlmsg_alloc();
4344 if (!msg)
4345 return -1;
4347 nl80211_cmd(drv, msg, 0, cmd);
4349 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4350 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4351 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4352 if (local_state_change)
4353 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4355 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4356 msg = NULL;
4357 if (ret) {
4358 wpa_dbg(drv->ctx, MSG_DEBUG,
4359 "nl80211: MLME command failed: reason=%u ret=%d (%s)",
4360 reason_code, ret, strerror(-ret));
4361 goto nla_put_failure;
4362 }
4363 ret = 0;
4365 nla_put_failure:
4366 nlmsg_free(msg);
4367 return ret;
4368 }
4371 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
4372 const u8 *addr, int reason_code)
4373 {
4374 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4375 __func__, MAC2STR(addr), reason_code);
4376 drv->associated = 0;
4377 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
4378 reason_code, 0);
4379 }
4382 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
4383 int reason_code)
4384 {
4385 struct i802_bss *bss = priv;
4386 struct wpa_driver_nl80211_data *drv = bss->drv;
4387 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4388 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4389 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4390 __func__, MAC2STR(addr), reason_code);
4391 drv->associated = 0;
4392 if (drv->nlmode == NL80211_IFTYPE_ADHOC)
4393 return nl80211_leave_ibss(drv);
4394 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
4395 reason_code, 0);
4396 }
4399 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
4400 int reason_code)
4401 {
4402 struct i802_bss *bss = priv;
4403 struct wpa_driver_nl80211_data *drv = bss->drv;
4404 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4405 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4406 wpa_printf(MSG_DEBUG, "%s", __func__);
4407 drv->associated = 0;
4408 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
4409 reason_code, 0);
4410 }
4413 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
4414 struct wpa_driver_auth_params *params)
4415 {
4416 int i;
4418 drv->auth_freq = params->freq;
4419 drv->auth_alg = params->auth_alg;
4420 drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
4421 drv->auth_local_state_change = params->local_state_change;
4422 drv->auth_p2p = params->p2p;
4424 if (params->bssid)
4425 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
4426 else
4427 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
4429 if (params->ssid) {
4430 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
4431 drv->auth_ssid_len = params->ssid_len;
4432 } else
4433 drv->auth_ssid_len = 0;
4436 os_free(drv->auth_ie);
4437 drv->auth_ie = NULL;
4438 drv->auth_ie_len = 0;
4439 if (params->ie) {
4440 drv->auth_ie = os_malloc(params->ie_len);
4441 if (drv->auth_ie) {
4442 os_memcpy(drv->auth_ie, params->ie, params->ie_len);
4443 drv->auth_ie_len = params->ie_len;
4444 }
4445 }
4447 for (i = 0; i < 4; i++) {
4448 if (params->wep_key[i] && params->wep_key_len[i] &&
4449 params->wep_key_len[i] <= 16) {
4450 os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
4451 params->wep_key_len[i]);
4452 drv->auth_wep_key_len[i] = params->wep_key_len[i];
4453 } else
4454 drv->auth_wep_key_len[i] = 0;
4455 }
4456 }
4459 static int wpa_driver_nl80211_authenticate(
4460 void *priv, struct wpa_driver_auth_params *params)
4461 {
4462 struct i802_bss *bss = priv;
4463 struct wpa_driver_nl80211_data *drv = bss->drv;
4464 int ret = -1, i;
4465 struct nl_msg *msg;
4466 enum nl80211_auth_type type;
4467 enum nl80211_iftype nlmode;
4468 int count = 0;
4469 int is_retry;
4471 is_retry = drv->retry_auth;
4472 drv->retry_auth = 0;
4474 drv->associated = 0;
4475 os_memset(drv->auth_bssid, 0, ETH_ALEN);
4476 /* FIX: IBSS mode */
4477 nlmode = params->p2p ?
4478 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4479 if (drv->nlmode != nlmode &&
4480 wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4481 return -1;
4483 retry:
4484 msg = nlmsg_alloc();
4485 if (!msg)
4486 return -1;
4488 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
4489 drv->ifindex);
4491 nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
4493 for (i = 0; i < 4; i++) {
4494 if (!params->wep_key[i])
4495 continue;
4496 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
4497 NULL, i,
4498 i == params->wep_tx_keyidx, NULL, 0,
4499 params->wep_key[i],
4500 params->wep_key_len[i]);
4501 if (params->wep_tx_keyidx != i)
4502 continue;
4503 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
4504 params->wep_key[i], params->wep_key_len[i])) {
4505 nlmsg_free(msg);
4506 return -1;
4507 }
4508 }
4510 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4511 if (params->bssid) {
4512 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4513 MAC2STR(params->bssid));
4514 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4515 }
4516 if (params->freq) {
4517 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4518 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4519 }
4520 if (params->ssid) {
4521 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4522 params->ssid, params->ssid_len);
4523 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4524 params->ssid);
4525 }
4526 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
4527 if (params->ie)
4528 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
4529 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4530 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4531 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4532 type = NL80211_AUTHTYPE_SHARED_KEY;
4533 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4534 type = NL80211_AUTHTYPE_NETWORK_EAP;
4535 else if (params->auth_alg & WPA_AUTH_ALG_FT)
4536 type = NL80211_AUTHTYPE_FT;
4537 else
4538 goto nla_put_failure;
4539 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4540 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4541 if (params->local_state_change) {
4542 wpa_printf(MSG_DEBUG, " * Local state change only");
4543 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4544 }
4546 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4547 msg = NULL;
4548 if (ret) {
4549 wpa_dbg(drv->ctx, MSG_DEBUG,
4550 "nl80211: MLME command failed (auth): ret=%d (%s)",
4551 ret, strerror(-ret));
4552 count++;
4553 if (ret == -EALREADY && count == 1 && params->bssid &&
4554 !params->local_state_change) {
4555 /*
4556 * mac80211 does not currently accept new
4557 * authentication if we are already authenticated. As a
4558 * workaround, force deauthentication and try again.
4559 */
4560 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
4561 "after forced deauthentication");
4562 wpa_driver_nl80211_deauthenticate(
4563 bss, params->bssid,
4564 WLAN_REASON_PREV_AUTH_NOT_VALID);
4565 nlmsg_free(msg);
4566 goto retry;
4567 }
4569 if (ret == -ENOENT && params->freq && !is_retry) {
4570 /*
4571 * cfg80211 has likely expired the BSS entry even
4572 * though it was previously available in our internal
4573 * BSS table. To recover quickly, start a single
4574 * channel scan on the specified channel.
4575 */
4576 struct wpa_driver_scan_params scan;
4577 int freqs[2];
4579 os_memset(&scan, 0, sizeof(scan));
4580 scan.num_ssids = 1;
4581 if (params->ssid) {
4582 scan.ssids[0].ssid = params->ssid;
4583 scan.ssids[0].ssid_len = params->ssid_len;
4584 }
4585 freqs[0] = params->freq;
4586 freqs[1] = 0;
4587 scan.freqs = freqs;
4588 wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
4589 "channel scan to refresh cfg80211 BSS "
4590 "entry");
4591 ret = wpa_driver_nl80211_scan(bss, &scan);
4592 if (ret == 0) {
4593 nl80211_copy_auth_params(drv, params);
4594 drv->scan_for_auth = 1;
4595 }
4596 } else if (is_retry) {
4597 /*
4598 * Need to indicate this with an event since the return
4599 * value from the retry is not delivered to core code.
4600 */
4601 union wpa_event_data event;
4602 wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
4603 "failed");
4604 os_memset(&event, 0, sizeof(event));
4605 os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
4606 ETH_ALEN);
4607 wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
4608 &event);
4609 }
4611 goto nla_put_failure;
4612 }
4613 ret = 0;
4614 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
4615 "successfully");
4617 nla_put_failure:
4618 nlmsg_free(msg);
4619 return ret;
4620 }
4623 static int wpa_driver_nl80211_authenticate_retry(
4624 struct wpa_driver_nl80211_data *drv)
4625 {
4626 struct wpa_driver_auth_params params;
4627 struct i802_bss *bss = &drv->first_bss;
4628 int i;
4630 wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
4632 os_memset(¶ms, 0, sizeof(params));
4633 params.freq = drv->auth_freq;
4634 params.auth_alg = drv->auth_alg;
4635 params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
4636 params.local_state_change = drv->auth_local_state_change;
4637 params.p2p = drv->auth_p2p;
4639 if (!is_zero_ether_addr(drv->auth_bssid_))
4640 params.bssid = drv->auth_bssid_;
4642 if (drv->auth_ssid_len) {
4643 params.ssid = drv->auth_ssid;
4644 params.ssid_len = drv->auth_ssid_len;
4645 }
4647 params.ie = drv->auth_ie;
4648 params.ie_len = drv->auth_ie_len;
4650 for (i = 0; i < 4; i++) {
4651 if (drv->auth_wep_key_len[i]) {
4652 params.wep_key[i] = drv->auth_wep_key[i];
4653 params.wep_key_len[i] = drv->auth_wep_key_len[i];
4654 }
4655 }
4657 drv->retry_auth = 1;
4658 return wpa_driver_nl80211_authenticate(bss, ¶ms);
4659 }
4662 struct phy_info_arg {
4663 u16 *num_modes;
4664 struct hostapd_hw_modes *modes;
4665 };
4667 static int phy_info_handler(struct nl_msg *msg, void *arg)
4668 {
4669 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4670 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4671 struct phy_info_arg *phy_info = arg;
4673 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
4675 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
4676 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4677 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
4678 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
4679 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
4680 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
4681 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
4682 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
4683 };
4685 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
4686 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
4687 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
4688 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
4689 };
4691 struct nlattr *nl_band;
4692 struct nlattr *nl_freq;
4693 struct nlattr *nl_rate;
4694 int rem_band, rem_freq, rem_rate;
4695 struct hostapd_hw_modes *mode;
4696 int idx, mode_is_set;
4698 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4699 genlmsg_attrlen(gnlh, 0), NULL);
4701 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
4702 return NL_SKIP;
4704 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
4705 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
4706 if (!mode)
4707 return NL_SKIP;
4708 phy_info->modes = mode;
4710 mode_is_set = 0;
4712 mode = &phy_info->modes[*(phy_info->num_modes)];
4713 memset(mode, 0, sizeof(*mode));
4714 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
4715 *(phy_info->num_modes) += 1;
4717 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
4718 nla_len(nl_band), NULL);
4720 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
4721 mode->ht_capab = nla_get_u16(
4722 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
4723 }
4725 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
4726 mode->a_mpdu_params |= nla_get_u8(
4727 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
4728 0x03;
4729 }
4731 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
4732 mode->a_mpdu_params |= nla_get_u8(
4733 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
4734 2;
4735 }
4737 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
4738 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
4739 u8 *mcs;
4740 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
4741 os_memcpy(mode->mcs_set, mcs, 16);
4742 }
4744 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4745 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4746 nla_len(nl_freq), freq_policy);
4747 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4748 continue;
4749 mode->num_channels++;
4750 }
4752 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
4753 if (!mode->channels)
4754 return NL_SKIP;
4756 idx = 0;
4758 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4759 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4760 nla_len(nl_freq), freq_policy);
4761 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4762 continue;
4764 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
4765 mode->channels[idx].flag = 0;
4767 if (!mode_is_set) {
4768 /* crude heuristic */
4769 if (mode->channels[idx].freq < 4000)
4770 mode->mode = HOSTAPD_MODE_IEEE80211B;
4771 else
4772 mode->mode = HOSTAPD_MODE_IEEE80211A;
4773 mode_is_set = 1;
4774 }
4776 /* crude heuristic */
4777 if (mode->channels[idx].freq < 4000)
4778 if (mode->channels[idx].freq == 2484)
4779 mode->channels[idx].chan = 14;
4780 else
4781 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
4782 else
4783 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
4785 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4786 mode->channels[idx].flag |=
4787 HOSTAPD_CHAN_DISABLED;
4788 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
4789 mode->channels[idx].flag |=
4790 HOSTAPD_CHAN_PASSIVE_SCAN;
4791 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
4792 mode->channels[idx].flag |=
4793 HOSTAPD_CHAN_NO_IBSS;
4794 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
4795 mode->channels[idx].flag |=
4796 HOSTAPD_CHAN_RADAR;
4798 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
4799 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4800 mode->channels[idx].max_tx_power =
4801 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
4803 idx++;
4804 }
4806 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4807 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4808 nla_len(nl_rate), rate_policy);
4809 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4810 continue;
4811 mode->num_rates++;
4812 }
4814 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
4815 if (!mode->rates)
4816 return NL_SKIP;
4818 idx = 0;
4820 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4821 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4822 nla_len(nl_rate), rate_policy);
4823 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4824 continue;
4825 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
4827 /* crude heuristic */
4828 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
4829 mode->rates[idx] > 200)
4830 mode->mode = HOSTAPD_MODE_IEEE80211G;
4832 idx++;
4833 }
4834 }
4836 return NL_SKIP;
4837 }
4839 static struct hostapd_hw_modes *
4840 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
4841 {
4842 u16 m;
4843 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
4844 int i, mode11g_idx = -1;
4846 /* If only 802.11g mode is included, use it to construct matching
4847 * 802.11b mode data. */
4849 for (m = 0; m < *num_modes; m++) {
4850 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
4851 return modes; /* 802.11b already included */
4852 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
4853 mode11g_idx = m;
4854 }
4856 if (mode11g_idx < 0)
4857 return modes; /* 2.4 GHz band not supported at all */
4859 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
4860 if (nmodes == NULL)
4861 return modes; /* Could not add 802.11b mode */
4863 mode = &nmodes[*num_modes];
4864 os_memset(mode, 0, sizeof(*mode));
4865 (*num_modes)++;
4866 modes = nmodes;
4868 mode->mode = HOSTAPD_MODE_IEEE80211B;
4870 mode11g = &modes[mode11g_idx];
4871 mode->num_channels = mode11g->num_channels;
4872 mode->channels = os_malloc(mode11g->num_channels *
4873 sizeof(struct hostapd_channel_data));
4874 if (mode->channels == NULL) {
4875 (*num_modes)--;
4876 return modes; /* Could not add 802.11b mode */
4877 }
4878 os_memcpy(mode->channels, mode11g->channels,
4879 mode11g->num_channels * sizeof(struct hostapd_channel_data));
4881 mode->num_rates = 0;
4882 mode->rates = os_malloc(4 * sizeof(int));
4883 if (mode->rates == NULL) {
4884 os_free(mode->channels);
4885 (*num_modes)--;
4886 return modes; /* Could not add 802.11b mode */
4887 }
4889 for (i = 0; i < mode11g->num_rates; i++) {
4890 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
4891 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
4892 continue;
4893 mode->rates[mode->num_rates] = mode11g->rates[i];
4894 mode->num_rates++;
4895 if (mode->num_rates == 4)
4896 break;
4897 }
4899 if (mode->num_rates == 0) {
4900 os_free(mode->channels);
4901 os_free(mode->rates);
4902 (*num_modes)--;
4903 return modes; /* No 802.11b rates */
4904 }
4906 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
4907 "information");
4909 return modes;
4910 }
4913 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
4914 int end)
4915 {
4916 int c;
4918 for (c = 0; c < mode->num_channels; c++) {
4919 struct hostapd_channel_data *chan = &mode->channels[c];
4920 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
4921 chan->flag |= HOSTAPD_CHAN_HT40;
4922 }
4923 }
4926 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
4927 int end)
4928 {
4929 int c;
4931 for (c = 0; c < mode->num_channels; c++) {
4932 struct hostapd_channel_data *chan = &mode->channels[c];
4933 if (!(chan->flag & HOSTAPD_CHAN_HT40))
4934 continue;
4935 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
4936 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
4937 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
4938 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
4939 }
4940 }
4943 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
4944 struct phy_info_arg *results)
4945 {
4946 u32 start, end, max_bw;
4947 u16 m;
4949 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4950 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4951 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4952 return;
4954 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4955 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4956 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4958 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
4959 start, end, max_bw);
4960 if (max_bw < 40)
4961 return;
4963 for (m = 0; m < *results->num_modes; m++) {
4964 if (!(results->modes[m].ht_capab &
4965 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4966 continue;
4967 nl80211_set_ht40_mode(&results->modes[m], start, end);
4968 }
4969 }
4972 static void nl80211_reg_rule_sec(struct nlattr *tb[],
4973 struct phy_info_arg *results)
4974 {
4975 u32 start, end, max_bw;
4976 u16 m;
4978 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
4979 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
4980 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
4981 return;
4983 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
4984 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
4985 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
4987 if (max_bw < 20)
4988 return;
4990 for (m = 0; m < *results->num_modes; m++) {
4991 if (!(results->modes[m].ht_capab &
4992 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
4993 continue;
4994 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
4995 }
4996 }
4999 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
5000 {
5001 struct phy_info_arg *results = arg;
5002 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
5003 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5004 struct nlattr *nl_rule;
5005 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
5006 int rem_rule;
5007 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
5008 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5009 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5010 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5011 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5012 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5013 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5014 };
5016 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5017 genlmsg_attrlen(gnlh, 0), NULL);
5018 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
5019 !tb_msg[NL80211_ATTR_REG_RULES]) {
5020 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
5021 "available");
5022 return NL_SKIP;
5023 }
5025 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
5026 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
5028 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5029 {
5030 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5031 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5032 nl80211_reg_rule_ht40(tb_rule, results);
5033 }
5035 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5036 {
5037 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5038 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5039 nl80211_reg_rule_sec(tb_rule, results);
5040 }
5042 return NL_SKIP;
5043 }
5046 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
5047 struct phy_info_arg *results)
5048 {
5049 struct nl_msg *msg;
5051 msg = nlmsg_alloc();
5052 if (!msg)
5053 return -ENOMEM;
5055 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
5056 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
5057 }
5060 static struct hostapd_hw_modes *
5061 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
5062 {
5063 struct i802_bss *bss = priv;
5064 struct wpa_driver_nl80211_data *drv = bss->drv;
5065 struct nl_msg *msg;
5066 struct phy_info_arg result = {
5067 .num_modes = num_modes,
5068 .modes = NULL,
5069 };
5071 *num_modes = 0;
5072 *flags = 0;
5074 msg = nlmsg_alloc();
5075 if (!msg)
5076 return NULL;
5078 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
5080 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5082 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
5083 nl80211_set_ht40_flags(drv, &result);
5084 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
5085 }
5086 msg = NULL;
5087 nla_put_failure:
5088 nlmsg_free(msg);
5089 return NULL;
5090 }
5093 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
5094 const void *data, size_t len,
5095 int encrypt, int noack)
5096 {
5097 __u8 rtap_hdr[] = {
5098 0x00, 0x00, /* radiotap version */
5099 0x0e, 0x00, /* radiotap length */
5100 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
5101 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
5102 0x00, /* padding */
5103 0x00, 0x00, /* RX and TX flags to indicate that */
5104 0x00, 0x00, /* this is the injected frame directly */
5105 };
5106 struct iovec iov[2] = {
5107 {
5108 .iov_base = &rtap_hdr,
5109 .iov_len = sizeof(rtap_hdr),
5110 },
5111 {
5112 .iov_base = (void *) data,
5113 .iov_len = len,
5114 }
5115 };
5116 struct msghdr msg = {
5117 .msg_name = NULL,
5118 .msg_namelen = 0,
5119 .msg_iov = iov,
5120 .msg_iovlen = 2,
5121 .msg_control = NULL,
5122 .msg_controllen = 0,
5123 .msg_flags = 0,
5124 };
5125 int res;
5126 u16 txflags = 0;
5128 if (encrypt)
5129 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
5131 if (drv->monitor_sock < 0) {
5132 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
5133 "for %s", __func__);
5134 return -1;
5135 }
5137 if (noack)
5138 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
5139 *(le16 *) &rtap_hdr[12] = host_to_le16(txflags);
5141 res = sendmsg(drv->monitor_sock, &msg, 0);
5142 if (res < 0) {
5143 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
5144 return -1;
5145 }
5146 return 0;
5147 }
5150 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
5151 const void *data, size_t len,
5152 int encrypt, int noack,
5153 unsigned int freq, int no_cck,
5154 int offchanok, unsigned int wait_time)
5155 {
5156 struct wpa_driver_nl80211_data *drv = bss->drv;
5157 u64 cookie;
5159 if (freq == 0)
5160 freq = bss->freq;
5162 if (drv->use_monitor)
5163 return wpa_driver_nl80211_send_mntr(drv, data, len,
5164 encrypt, noack);
5166 return nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
5167 &cookie, no_cck, noack, offchanok);
5168 }
5171 static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss,
5172 const u8 *data,
5173 size_t data_len, int noack,
5174 unsigned int freq, int no_cck,
5175 int offchanok,
5176 unsigned int wait_time)
5177 {
5178 struct wpa_driver_nl80211_data *drv = bss->drv;
5179 struct ieee80211_mgmt *mgmt;
5180 int encrypt = 1;
5181 u16 fc;
5183 mgmt = (struct ieee80211_mgmt *) data;
5184 fc = le_to_host16(mgmt->frame_control);
5186 if (is_sta_interface(drv->nlmode) &&
5187 WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5188 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
5189 /*
5190 * The use of last_mgmt_freq is a bit of a hack,
5191 * but it works due to the single-threaded nature
5192 * of wpa_supplicant.
5193 */
5194 if (freq == 0)
5195 freq = drv->last_mgmt_freq;
5196 return nl80211_send_frame_cmd(bss, freq, 0,
5197 data, data_len, NULL, 1, noack,
5198 1);
5199 }
5201 if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
5202 if (freq == 0)
5203 freq = bss->freq;
5204 return nl80211_send_frame_cmd(bss, freq, 0,
5205 data, data_len,
5206 &drv->send_action_cookie,
5207 no_cck, noack, offchanok);
5208 }
5210 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5211 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
5212 /*
5213 * Only one of the authentication frame types is encrypted.
5214 * In order for static WEP encryption to work properly (i.e.,
5215 * to not encrypt the frame), we need to tell mac80211 about
5216 * the frames that must not be encrypted.
5217 */
5218 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
5219 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
5220 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
5221 encrypt = 0;
5222 }
5224 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
5225 noack, freq, no_cck, offchanok,
5226 wait_time);
5227 }
5230 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
5231 size_t data_len, int noack)
5232 {
5233 struct i802_bss *bss = priv;
5234 return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack,
5235 0, 0, 0, 0);
5236 }
5239 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
5240 int slot, int ht_opmode, int ap_isolate,
5241 int *basic_rates)
5242 {
5243 struct wpa_driver_nl80211_data *drv = bss->drv;
5244 struct nl_msg *msg;
5246 msg = nlmsg_alloc();
5247 if (!msg)
5248 return -ENOMEM;
5250 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5252 if (cts >= 0)
5253 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5254 if (preamble >= 0)
5255 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5256 if (slot >= 0)
5257 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5258 if (ht_opmode >= 0)
5259 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5260 if (ap_isolate >= 0)
5261 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
5263 if (basic_rates) {
5264 u8 rates[NL80211_MAX_SUPP_RATES];
5265 u8 rates_len = 0;
5266 int i;
5268 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
5269 i++)
5270 rates[rates_len++] = basic_rates[i] / 5;
5272 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5273 }
5275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5277 return send_and_recv_msgs(drv, msg, NULL, NULL);
5278 nla_put_failure:
5279 nlmsg_free(msg);
5280 return -ENOBUFS;
5281 }
5284 static int wpa_driver_nl80211_set_ap(void *priv,
5285 struct wpa_driver_ap_params *params)
5286 {
5287 struct i802_bss *bss = priv;
5288 struct wpa_driver_nl80211_data *drv = bss->drv;
5289 struct nl_msg *msg;
5290 u8 cmd = NL80211_CMD_NEW_BEACON;
5291 int ret;
5292 int beacon_set;
5293 int ifindex = if_nametoindex(bss->ifname);
5294 int num_suites;
5295 u32 suites[10];
5296 u32 ver;
5298 beacon_set = bss->beacon_set;
5300 msg = nlmsg_alloc();
5301 if (!msg)
5302 return -ENOMEM;
5304 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
5305 beacon_set);
5306 if (beacon_set)
5307 cmd = NL80211_CMD_SET_BEACON;
5309 nl80211_cmd(drv, msg, 0, cmd);
5310 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
5311 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
5312 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5313 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
5314 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
5315 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5316 params->ssid);
5317 if (params->proberesp && params->proberesp_len)
5318 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
5319 params->proberesp);
5320 switch (params->hide_ssid) {
5321 case NO_SSID_HIDING:
5322 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5323 NL80211_HIDDEN_SSID_NOT_IN_USE);
5324 break;
5325 case HIDDEN_SSID_ZERO_LEN:
5326 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5327 NL80211_HIDDEN_SSID_ZERO_LEN);
5328 break;
5329 case HIDDEN_SSID_ZERO_CONTENTS:
5330 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5331 NL80211_HIDDEN_SSID_ZERO_CONTENTS);
5332 break;
5333 }
5334 if (params->privacy)
5335 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5336 if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
5337 (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
5338 /* Leave out the attribute */
5339 } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
5340 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5341 NL80211_AUTHTYPE_SHARED_KEY);
5342 else
5343 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5344 NL80211_AUTHTYPE_OPEN_SYSTEM);
5346 ver = 0;
5347 if (params->wpa_version & WPA_PROTO_WPA)
5348 ver |= NL80211_WPA_VERSION_1;
5349 if (params->wpa_version & WPA_PROTO_RSN)
5350 ver |= NL80211_WPA_VERSION_2;
5351 if (ver)
5352 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5354 num_suites = 0;
5355 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
5356 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
5357 if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
5358 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
5359 if (num_suites) {
5360 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
5361 num_suites * sizeof(u32), suites);
5362 }
5364 if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
5365 params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
5366 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
5368 num_suites = 0;
5369 if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
5370 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5371 if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
5372 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5373 if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
5374 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5375 if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
5376 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5377 if (num_suites) {
5378 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5379 num_suites * sizeof(u32), suites);
5380 }
5382 switch (params->group_cipher) {
5383 case WPA_CIPHER_CCMP:
5384 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5385 WLAN_CIPHER_SUITE_CCMP);
5386 break;
5387 case WPA_CIPHER_TKIP:
5388 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5389 WLAN_CIPHER_SUITE_TKIP);
5390 break;
5391 case WPA_CIPHER_WEP104:
5392 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5393 WLAN_CIPHER_SUITE_WEP104);
5394 break;
5395 case WPA_CIPHER_WEP40:
5396 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5397 WLAN_CIPHER_SUITE_WEP40);
5398 break;
5399 }
5401 if (params->beacon_ies) {
5402 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
5403 wpabuf_head(params->beacon_ies));
5404 }
5405 if (params->proberesp_ies) {
5406 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
5407 wpabuf_len(params->proberesp_ies),
5408 wpabuf_head(params->proberesp_ies));
5409 }
5410 if (params->assocresp_ies) {
5411 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
5412 wpabuf_len(params->assocresp_ies),
5413 wpabuf_head(params->assocresp_ies));
5414 }
5416 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5417 if (ret) {
5418 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
5419 ret, strerror(-ret));
5420 } else {
5421 bss->beacon_set = 1;
5422 nl80211_set_bss(bss, params->cts_protect, params->preamble,
5423 params->short_slot_time, params->ht_opmode,
5424 params->isolate, params->basic_rates);
5425 }
5426 return ret;
5427 nla_put_failure:
5428 nlmsg_free(msg);
5429 return -ENOBUFS;
5430 }
5433 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
5434 int freq, int ht_enabled,
5435 int sec_channel_offset)
5436 {
5437 struct wpa_driver_nl80211_data *drv = bss->drv;
5438 struct nl_msg *msg;
5439 int ret;
5441 wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
5442 "sec_channel_offset=%d)",
5443 freq, ht_enabled, sec_channel_offset);
5444 msg = nlmsg_alloc();
5445 if (!msg)
5446 return -1;
5448 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5450 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5451 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5452 if (ht_enabled) {
5453 switch (sec_channel_offset) {
5454 case -1:
5455 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5456 NL80211_CHAN_HT40MINUS);
5457 break;
5458 case 1:
5459 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5460 NL80211_CHAN_HT40PLUS);
5461 break;
5462 default:
5463 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5464 NL80211_CHAN_HT20);
5465 break;
5466 }
5467 }
5469 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5470 msg = NULL;
5471 if (ret == 0) {
5472 bss->freq = freq;
5473 return 0;
5474 }
5475 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
5476 "%d (%s)", freq, ret, strerror(-ret));
5477 nla_put_failure:
5478 nlmsg_free(msg);
5479 return -1;
5480 }
5483 static u32 sta_flags_nl80211(int flags)
5484 {
5485 u32 f = 0;
5487 if (flags & WPA_STA_AUTHORIZED)
5488 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
5489 if (flags & WPA_STA_WMM)
5490 f |= BIT(NL80211_STA_FLAG_WME);
5491 if (flags & WPA_STA_SHORT_PREAMBLE)
5492 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
5493 if (flags & WPA_STA_MFP)
5494 f |= BIT(NL80211_STA_FLAG_MFP);
5495 if (flags & WPA_STA_TDLS_PEER)
5496 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
5498 return f;
5499 }
5502 static int wpa_driver_nl80211_sta_add(void *priv,
5503 struct hostapd_sta_add_params *params)
5504 {
5505 struct i802_bss *bss = priv;
5506 struct wpa_driver_nl80211_data *drv = bss->drv;
5507 struct nl_msg *msg, *wme = NULL;
5508 struct nl80211_sta_flag_update upd;
5509 int ret = -ENOBUFS;
5511 if ((params->flags & WPA_STA_TDLS_PEER) &&
5512 !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
5513 return -EOPNOTSUPP;
5515 msg = nlmsg_alloc();
5516 if (!msg)
5517 return -ENOMEM;
5519 nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
5520 NL80211_CMD_NEW_STATION);
5522 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5523 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
5524 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
5525 params->supp_rates);
5526 if (!params->set) {
5527 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
5528 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
5529 params->listen_interval);
5530 }
5531 if (params->ht_capabilities) {
5532 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
5533 sizeof(*params->ht_capabilities),
5534 params->ht_capabilities);
5535 }
5537 os_memset(&upd, 0, sizeof(upd));
5538 upd.mask = sta_flags_nl80211(params->flags);
5539 upd.set = upd.mask;
5540 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5542 if (params->flags & WPA_STA_WMM) {
5543 wme = nlmsg_alloc();
5544 if (!wme)
5545 goto nla_put_failure;
5547 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES,
5548 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
5549 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP,
5550 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) &
5551 WMM_QOSINFO_STA_SP_MASK);
5552 nla_put_nested(msg, NL80211_ATTR_STA_WME, wme);
5553 }
5555 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5556 msg = NULL;
5557 if (ret)
5558 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
5559 "result: %d (%s)", params->set ? "SET" : "NEW", ret,
5560 strerror(-ret));
5561 if (ret == -EEXIST)
5562 ret = 0;
5563 nla_put_failure:
5564 nlmsg_free(wme);
5565 nlmsg_free(msg);
5566 return ret;
5567 }
5570 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
5571 {
5572 struct i802_bss *bss = priv;
5573 struct wpa_driver_nl80211_data *drv = bss->drv;
5574 struct nl_msg *msg;
5575 int ret;
5577 msg = nlmsg_alloc();
5578 if (!msg)
5579 return -ENOMEM;
5581 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5583 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5584 if_nametoindex(bss->ifname));
5585 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5587 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5588 if (ret == -ENOENT)
5589 return 0;
5590 return ret;
5591 nla_put_failure:
5592 nlmsg_free(msg);
5593 return -ENOBUFS;
5594 }
5597 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
5598 int ifidx)
5599 {
5600 struct nl_msg *msg;
5602 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
5604 /* stop listening for EAPOL on this interface */
5605 del_ifidx(drv, ifidx);
5607 msg = nlmsg_alloc();
5608 if (!msg)
5609 goto nla_put_failure;
5611 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
5612 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
5614 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5615 return;
5616 msg = NULL;
5617 nla_put_failure:
5618 nlmsg_free(msg);
5619 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
5620 }
5623 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
5624 {
5625 switch (mode) {
5626 case NL80211_IFTYPE_ADHOC:
5627 return "ADHOC";
5628 case NL80211_IFTYPE_STATION:
5629 return "STATION";
5630 case NL80211_IFTYPE_AP:
5631 return "AP";
5632 case NL80211_IFTYPE_MONITOR:
5633 return "MONITOR";
5634 case NL80211_IFTYPE_P2P_CLIENT:
5635 return "P2P_CLIENT";
5636 case NL80211_IFTYPE_P2P_GO:
5637 return "P2P_GO";
5638 default:
5639 return "unknown";
5640 }
5641 }
5644 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
5645 const char *ifname,
5646 enum nl80211_iftype iftype,
5647 const u8 *addr, int wds)
5648 {
5649 struct nl_msg *msg, *flags = NULL;
5650 int ifidx;
5651 int ret = -ENOBUFS;
5653 wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
5654 iftype, nl80211_iftype_str(iftype));
5656 msg = nlmsg_alloc();
5657 if (!msg)
5658 return -1;
5660 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
5661 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5662 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
5663 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
5665 if (iftype == NL80211_IFTYPE_MONITOR) {
5666 int err;
5668 flags = nlmsg_alloc();
5669 if (!flags)
5670 goto nla_put_failure;
5672 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
5674 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
5676 nlmsg_free(flags);
5678 if (err)
5679 goto nla_put_failure;
5680 } else if (wds) {
5681 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
5682 }
5684 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5685 msg = NULL;
5686 if (ret) {
5687 nla_put_failure:
5688 nlmsg_free(msg);
5689 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
5690 ifname, ret, strerror(-ret));
5691 return ret;
5692 }
5694 ifidx = if_nametoindex(ifname);
5695 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
5696 ifname, ifidx);
5698 if (ifidx <= 0)
5699 return -1;
5701 /* start listening for EAPOL on this interface */
5702 add_ifidx(drv, ifidx);
5704 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
5705 linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
5706 nl80211_remove_iface(drv, ifidx);
5707 return -1;
5708 }
5710 return ifidx;
5711 }
5714 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
5715 const char *ifname, enum nl80211_iftype iftype,
5716 const u8 *addr, int wds)
5717 {
5718 int ret;
5720 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
5722 /* if error occurred and interface exists already */
5723 if (ret == -ENFILE && if_nametoindex(ifname)) {
5724 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
5726 /* Try to remove the interface that was already there. */
5727 nl80211_remove_iface(drv, if_nametoindex(ifname));
5729 /* Try to create the interface again */
5730 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
5731 wds);
5732 }
5734 if (ret >= 0 && is_p2p_interface(iftype))
5735 nl80211_disable_11b_rates(drv, ret, 1);
5737 return ret;
5738 }
5741 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
5742 {
5743 struct ieee80211_hdr *hdr;
5744 u16 fc;
5745 union wpa_event_data event;
5747 hdr = (struct ieee80211_hdr *) buf;
5748 fc = le_to_host16(hdr->frame_control);
5750 os_memset(&event, 0, sizeof(event));
5751 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
5752 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
5753 event.tx_status.dst = hdr->addr1;
5754 event.tx_status.data = buf;
5755 event.tx_status.data_len = len;
5756 event.tx_status.ack = ok;
5757 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
5758 }
5761 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
5762 u8 *buf, size_t len)
5763 {
5764 struct ieee80211_hdr *hdr = (void *)buf;
5765 u16 fc;
5766 union wpa_event_data event;
5768 if (len < sizeof(*hdr))
5769 return;
5771 fc = le_to_host16(hdr->frame_control);
5773 os_memset(&event, 0, sizeof(event));
5774 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
5775 event.rx_from_unknown.addr = hdr->addr2;
5776 event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
5777 (WLAN_FC_FROMDS | WLAN_FC_TODS);
5778 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
5779 }
5782 static void handle_frame(struct wpa_driver_nl80211_data *drv,
5783 u8 *buf, size_t len, int datarate, int ssi_signal)
5784 {
5785 struct ieee80211_hdr *hdr;
5786 u16 fc;
5787 union wpa_event_data event;
5789 hdr = (struct ieee80211_hdr *) buf;
5790 fc = le_to_host16(hdr->frame_control);
5792 switch (WLAN_FC_GET_TYPE(fc)) {
5793 case WLAN_FC_TYPE_MGMT:
5794 os_memset(&event, 0, sizeof(event));
5795 event.rx_mgmt.frame = buf;
5796 event.rx_mgmt.frame_len = len;
5797 event.rx_mgmt.datarate = datarate;
5798 event.rx_mgmt.ssi_signal = ssi_signal;
5799 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
5800 break;
5801 case WLAN_FC_TYPE_CTRL:
5802 /* can only get here with PS-Poll frames */
5803 wpa_printf(MSG_DEBUG, "CTRL");
5804 from_unknown_sta(drv, buf, len);
5805 break;
5806 case WLAN_FC_TYPE_DATA:
5807 from_unknown_sta(drv, buf, len);
5808 break;
5809 }
5810 }
5813 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
5814 {
5815 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5816 int len;
5817 unsigned char buf[3000];
5818 struct ieee80211_radiotap_iterator iter;
5819 int ret;
5820 int datarate = 0, ssi_signal = 0;
5821 int injected = 0, failed = 0, rxflags = 0;
5823 len = recv(sock, buf, sizeof(buf), 0);
5824 if (len < 0) {
5825 perror("recv");
5826 return;
5827 }
5829 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
5830 printf("received invalid radiotap frame\n");
5831 return;
5832 }
5834 while (1) {
5835 ret = ieee80211_radiotap_iterator_next(&iter);
5836 if (ret == -ENOENT)
5837 break;
5838 if (ret) {
5839 printf("received invalid radiotap frame (%d)\n", ret);
5840 return;
5841 }
5842 switch (iter.this_arg_index) {
5843 case IEEE80211_RADIOTAP_FLAGS:
5844 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
5845 len -= 4;
5846 break;
5847 case IEEE80211_RADIOTAP_RX_FLAGS:
5848 rxflags = 1;
5849 break;
5850 case IEEE80211_RADIOTAP_TX_FLAGS:
5851 injected = 1;
5852 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
5853 IEEE80211_RADIOTAP_F_TX_FAIL;
5854 break;
5855 case IEEE80211_RADIOTAP_DATA_RETRIES:
5856 break;
5857 case IEEE80211_RADIOTAP_CHANNEL:
5858 /* TODO: convert from freq/flags to channel number */
5859 break;
5860 case IEEE80211_RADIOTAP_RATE:
5861 datarate = *iter.this_arg * 5;
5862 break;
5863 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
5864 ssi_signal = *iter.this_arg;
5865 break;
5866 }
5867 }
5869 if (rxflags && injected)
5870 return;
5872 if (!injected)
5873 handle_frame(drv, buf + iter.max_length,
5874 len - iter.max_length, datarate, ssi_signal);
5875 else
5876 handle_tx_callback(drv->ctx, buf + iter.max_length,
5877 len - iter.max_length, !failed);
5878 }
5881 /*
5882 * we post-process the filter code later and rewrite
5883 * this to the offset to the last instruction
5884 */
5885 #define PASS 0xFF
5886 #define FAIL 0xFE
5888 static struct sock_filter msock_filter_insns[] = {
5889 /*
5890 * do a little-endian load of the radiotap length field
5891 */
5892 /* load lower byte into A */
5893 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
5894 /* put it into X (== index register) */
5895 BPF_STMT(BPF_MISC| BPF_TAX, 0),
5896 /* load upper byte into A */
5897 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
5898 /* left-shift it by 8 */
5899 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
5900 /* or with X */
5901 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
5902 /* put result into X */
5903 BPF_STMT(BPF_MISC| BPF_TAX, 0),
5905 /*
5906 * Allow management frames through, this also gives us those
5907 * management frames that we sent ourselves with status
5908 */
5909 /* load the lower byte of the IEEE 802.11 frame control field */
5910 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
5911 /* mask off frame type and version */
5912 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
5913 /* accept frame if it's both 0, fall through otherwise */
5914 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
5916 /*
5917 * TODO: add a bit to radiotap RX flags that indicates
5918 * that the sending station is not associated, then
5919 * add a filter here that filters on our DA and that flag
5920 * to allow us to deauth frames to that bad station.
5921 *
5922 * For now allow all To DS data frames through.
5923 */
5924 /* load the IEEE 802.11 frame control field */
5925 BPF_STMT(BPF_LD | BPF_H | BPF_IND, 0),
5926 /* mask off frame type, version and DS status */
5927 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
5928 /* accept frame if version 0, type 2 and To DS, fall through otherwise
5929 */
5930 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
5932 #if 0
5933 /*
5934 * drop non-data frames
5935 */
5936 /* load the lower byte of the frame control field */
5937 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
5938 /* mask off QoS bit */
5939 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
5940 /* drop non-data frames */
5941 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
5942 #endif
5943 /* load the upper byte of the frame control field */
5944 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
5945 /* mask off toDS/fromDS */
5946 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
5947 /* accept WDS frames */
5948 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
5950 /*
5951 * add header length to index
5952 */
5953 /* load the lower byte of the frame control field */
5954 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
5955 /* mask off QoS bit */
5956 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
5957 /* right shift it by 6 to give 0 or 2 */
5958 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
5959 /* add data frame header length */
5960 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
5961 /* add index, was start of 802.11 header */
5962 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
5963 /* move to index, now start of LL header */
5964 BPF_STMT(BPF_MISC | BPF_TAX, 0),
5966 /*
5967 * Accept empty data frames, we use those for
5968 * polling activity.
5969 */
5970 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
5971 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
5973 /*
5974 * Accept EAPOL frames
5975 */
5976 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
5977 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
5978 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
5979 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
5981 /* keep these last two statements or change the code below */
5982 /* return 0 == "DROP" */
5983 BPF_STMT(BPF_RET | BPF_K, 0),
5984 /* return ~0 == "keep all" */
5985 BPF_STMT(BPF_RET | BPF_K, ~0),
5986 };
5988 static struct sock_fprog msock_filter = {
5989 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
5990 .filter = msock_filter_insns,
5991 };
5994 static int add_monitor_filter(int s)
5995 {
5996 int idx;
5998 /* rewrite all PASS/FAIL jump offsets */
5999 for (idx = 0; idx < msock_filter.len; idx++) {
6000 struct sock_filter *insn = &msock_filter_insns[idx];
6002 if (BPF_CLASS(insn->code) == BPF_JMP) {
6003 if (insn->code == (BPF_JMP|BPF_JA)) {
6004 if (insn->k == PASS)
6005 insn->k = msock_filter.len - idx - 2;
6006 else if (insn->k == FAIL)
6007 insn->k = msock_filter.len - idx - 3;
6008 }
6010 if (insn->jt == PASS)
6011 insn->jt = msock_filter.len - idx - 2;
6012 else if (insn->jt == FAIL)
6013 insn->jt = msock_filter.len - idx - 3;
6015 if (insn->jf == PASS)
6016 insn->jf = msock_filter.len - idx - 2;
6017 else if (insn->jf == FAIL)
6018 insn->jf = msock_filter.len - idx - 3;
6019 }
6020 }
6022 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
6023 &msock_filter, sizeof(msock_filter))) {
6024 perror("SO_ATTACH_FILTER");
6025 return -1;
6026 }
6028 return 0;
6029 }
6032 static void nl80211_remove_monitor_interface(
6033 struct wpa_driver_nl80211_data *drv)
6034 {
6035 drv->monitor_refcount--;
6036 if (drv->monitor_refcount > 0)
6037 return;
6039 if (drv->monitor_ifidx >= 0) {
6040 nl80211_remove_iface(drv, drv->monitor_ifidx);
6041 drv->monitor_ifidx = -1;
6042 }
6043 if (drv->monitor_sock >= 0) {
6044 eloop_unregister_read_sock(drv->monitor_sock);
6045 close(drv->monitor_sock);
6046 drv->monitor_sock = -1;
6047 }
6048 }
6051 static int
6052 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
6053 {
6054 char buf[IFNAMSIZ];
6055 struct sockaddr_ll ll;
6056 int optval;
6057 socklen_t optlen;
6059 if (drv->monitor_ifidx >= 0) {
6060 drv->monitor_refcount++;
6061 return 0;
6062 }
6064 if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
6065 /*
6066 * P2P interface name is of the format p2p-%s-%d. For monitor
6067 * interface name corresponding to P2P GO, replace "p2p-" with
6068 * "mon-" to retain the same interface name length and to
6069 * indicate that it is a monitor interface.
6070 */
6071 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
6072 } else {
6073 /* Non-P2P interface with AP functionality. */
6074 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
6075 }
6077 buf[IFNAMSIZ - 1] = '\0';
6079 drv->monitor_ifidx =
6080 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
6081 0);
6083 if (drv->monitor_ifidx == -EOPNOTSUPP) {
6084 /*
6085 * This is backward compatibility for a few versions of
6086 * the kernel only that didn't advertise the right
6087 * attributes for the only driver that then supported
6088 * AP mode w/o monitor -- ath6kl.
6089 */
6090 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
6091 "monitor interface type - try to run without it");
6092 drv->device_ap_sme = 1;
6093 }
6095 if (drv->monitor_ifidx < 0)
6096 return -1;
6098 if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
6099 goto error;
6101 memset(&ll, 0, sizeof(ll));
6102 ll.sll_family = AF_PACKET;
6103 ll.sll_ifindex = drv->monitor_ifidx;
6104 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
6105 if (drv->monitor_sock < 0) {
6106 perror("socket[PF_PACKET,SOCK_RAW]");
6107 goto error;
6108 }
6110 if (add_monitor_filter(drv->monitor_sock)) {
6111 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
6112 "interface; do filtering in user space");
6113 /* This works, but will cost in performance. */
6114 }
6116 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
6117 perror("monitor socket bind");
6118 goto error;
6119 }
6121 optlen = sizeof(optval);
6122 optval = 20;
6123 if (setsockopt
6124 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
6125 perror("Failed to set socket priority");
6126 goto error;
6127 }
6129 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
6130 drv, NULL)) {
6131 printf("Could not register monitor read socket\n");
6132 goto error;
6133 }
6135 return 0;
6136 error:
6137 nl80211_remove_monitor_interface(drv);
6138 return -1;
6139 }
6142 static int nl80211_setup_ap(struct i802_bss *bss)
6143 {
6144 struct wpa_driver_nl80211_data *drv = bss->drv;
6146 wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d "
6147 "use_monitor=%d", drv->device_ap_sme, drv->use_monitor);
6149 /*
6150 * Disable Probe Request reporting unless we need it in this way for
6151 * devices that include the AP SME, in the other case (unless using
6152 * monitor iface) we'll get it through the nl_mgmt socket instead.
6153 */
6154 if (!drv->device_ap_sme)
6155 wpa_driver_nl80211_probe_req_report(bss, 0);
6157 if (!drv->device_ap_sme && !drv->use_monitor)
6158 if (nl80211_mgmt_subscribe_ap(bss))
6159 return -1;
6161 if (drv->device_ap_sme && !drv->use_monitor)
6162 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
6163 return -1;
6165 if (!drv->device_ap_sme && drv->use_monitor &&
6166 nl80211_create_monitor_interface(drv) &&
6167 !drv->device_ap_sme)
6168 return -1;
6170 if (drv->device_ap_sme &&
6171 wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
6172 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
6173 "Probe Request frame reporting in AP mode");
6174 /* Try to survive without this */
6175 }
6177 return 0;
6178 }
6181 static void nl80211_teardown_ap(struct i802_bss *bss)
6182 {
6183 struct wpa_driver_nl80211_data *drv = bss->drv;
6185 if (drv->device_ap_sme) {
6186 wpa_driver_nl80211_probe_req_report(bss, 0);
6187 if (!drv->use_monitor)
6188 nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
6189 } else if (drv->use_monitor)
6190 nl80211_remove_monitor_interface(drv);
6191 else
6192 nl80211_mgmt_unsubscribe(bss, "AP teardown");
6194 bss->beacon_set = 0;
6195 }
6198 static int nl80211_send_eapol_data(struct i802_bss *bss,
6199 const u8 *addr, const u8 *data,
6200 size_t data_len)
6201 {
6202 struct sockaddr_ll ll;
6203 int ret;
6205 if (bss->drv->eapol_tx_sock < 0) {
6206 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
6207 return -1;
6208 }
6210 os_memset(&ll, 0, sizeof(ll));
6211 ll.sll_family = AF_PACKET;
6212 ll.sll_ifindex = bss->ifindex;
6213 ll.sll_protocol = htons(ETH_P_PAE);
6214 ll.sll_halen = ETH_ALEN;
6215 os_memcpy(ll.sll_addr, addr, ETH_ALEN);
6216 ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
6217 (struct sockaddr *) &ll, sizeof(ll));
6218 if (ret < 0)
6219 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
6220 strerror(errno));
6222 return ret;
6223 }
6226 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
6228 static int wpa_driver_nl80211_hapd_send_eapol(
6229 void *priv, const u8 *addr, const u8 *data,
6230 size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
6231 {
6232 struct i802_bss *bss = priv;
6233 struct wpa_driver_nl80211_data *drv = bss->drv;
6234 struct ieee80211_hdr *hdr;
6235 size_t len;
6236 u8 *pos;
6237 int res;
6238 int qos = flags & WPA_STA_WMM;
6240 if (drv->device_ap_sme || !drv->use_monitor)
6241 return nl80211_send_eapol_data(bss, addr, data, data_len);
6243 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
6244 data_len;
6245 hdr = os_zalloc(len);
6246 if (hdr == NULL) {
6247 printf("malloc() failed for i802_send_data(len=%lu)\n",
6248 (unsigned long) len);
6249 return -1;
6250 }
6252 hdr->frame_control =
6253 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
6254 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
6255 if (encrypt)
6256 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
6257 if (qos) {
6258 hdr->frame_control |=
6259 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
6260 }
6262 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6263 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6264 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6265 pos = (u8 *) (hdr + 1);
6267 if (qos) {
6268 /* add an empty QoS header if needed */
6269 pos[0] = 0;
6270 pos[1] = 0;
6271 pos += 2;
6272 }
6274 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
6275 pos += sizeof(rfc1042_header);
6276 WPA_PUT_BE16(pos, ETH_P_PAE);
6277 pos += 2;
6278 memcpy(pos, data, data_len);
6280 res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
6281 0, 0, 0, 0);
6282 if (res < 0) {
6283 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
6284 "failed: %d (%s)",
6285 (unsigned long) len, errno, strerror(errno));
6286 }
6287 os_free(hdr);
6289 return res;
6290 }
6293 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
6294 int total_flags,
6295 int flags_or, int flags_and)
6296 {
6297 struct i802_bss *bss = priv;
6298 struct wpa_driver_nl80211_data *drv = bss->drv;
6299 struct nl_msg *msg, *flags = NULL;
6300 struct nl80211_sta_flag_update upd;
6302 msg = nlmsg_alloc();
6303 if (!msg)
6304 return -ENOMEM;
6306 flags = nlmsg_alloc();
6307 if (!flags) {
6308 nlmsg_free(msg);
6309 return -ENOMEM;
6310 }
6312 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6314 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6315 if_nametoindex(bss->ifname));
6316 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6318 /*
6319 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
6320 * can be removed eventually.
6321 */
6322 if (total_flags & WPA_STA_AUTHORIZED)
6323 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
6325 if (total_flags & WPA_STA_WMM)
6326 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
6328 if (total_flags & WPA_STA_SHORT_PREAMBLE)
6329 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
6331 if (total_flags & WPA_STA_MFP)
6332 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
6334 if (total_flags & WPA_STA_TDLS_PEER)
6335 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
6337 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
6338 goto nla_put_failure;
6340 os_memset(&upd, 0, sizeof(upd));
6341 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
6342 upd.set = sta_flags_nl80211(flags_or);
6343 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6345 nlmsg_free(flags);
6347 return send_and_recv_msgs(drv, msg, NULL, NULL);
6348 nla_put_failure:
6349 nlmsg_free(msg);
6350 nlmsg_free(flags);
6351 return -ENOBUFS;
6352 }
6355 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
6356 struct wpa_driver_associate_params *params)
6357 {
6358 enum nl80211_iftype nlmode;
6360 if (params->p2p) {
6361 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
6362 "group (GO)");
6363 nlmode = NL80211_IFTYPE_P2P_GO;
6364 } else
6365 nlmode = NL80211_IFTYPE_AP;
6367 if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
6368 wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) {
6369 nl80211_remove_monitor_interface(drv);
6370 return -1;
6371 }
6373 return 0;
6374 }
6377 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
6378 {
6379 struct nl_msg *msg;
6380 int ret = -1;
6382 msg = nlmsg_alloc();
6383 if (!msg)
6384 return -1;
6386 nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
6387 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6388 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6389 msg = NULL;
6390 if (ret) {
6391 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
6392 "(%s)", ret, strerror(-ret));
6393 goto nla_put_failure;
6394 }
6396 ret = 0;
6397 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
6399 nla_put_failure:
6400 nlmsg_free(msg);
6401 return ret;
6402 }
6405 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
6406 struct wpa_driver_associate_params *params)
6407 {
6408 struct nl_msg *msg;
6409 int ret = -1;
6410 int count = 0;
6412 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
6414 if (wpa_driver_nl80211_set_mode(&drv->first_bss,
6415 NL80211_IFTYPE_ADHOC)) {
6416 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
6417 "IBSS mode");
6418 return -1;
6419 }
6421 retry:
6422 msg = nlmsg_alloc();
6423 if (!msg)
6424 return -1;
6426 nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
6427 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6429 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
6430 goto nla_put_failure;
6432 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6433 params->ssid, params->ssid_len);
6434 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6435 params->ssid);
6436 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6437 drv->ssid_len = params->ssid_len;
6439 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6440 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6442 ret = nl80211_set_conn_keys(params, msg);
6443 if (ret)
6444 goto nla_put_failure;
6446 if (params->bssid && params->fixed_bssid) {
6447 wpa_printf(MSG_DEBUG, " * BSSID=" MACSTR,
6448 MAC2STR(params->bssid));
6449 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6450 }
6452 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6453 params->key_mgmt_suite == KEY_MGMT_PSK ||
6454 params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 ||
6455 params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) {
6456 wpa_printf(MSG_DEBUG, " * control port");
6457 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6458 }
6460 if (params->wpa_ie) {
6461 wpa_hexdump(MSG_DEBUG,
6462 " * Extra IEs for Beacon/Probe Response frames",
6463 params->wpa_ie, params->wpa_ie_len);
6464 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6465 params->wpa_ie);
6466 }
6468 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6469 msg = NULL;
6470 if (ret) {
6471 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
6472 ret, strerror(-ret));
6473 count++;
6474 if (ret == -EALREADY && count == 1) {
6475 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
6476 "forced leave");
6477 nl80211_leave_ibss(drv);
6478 nlmsg_free(msg);
6479 goto retry;
6480 }
6482 goto nla_put_failure;
6483 }
6484 ret = 0;
6485 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
6487 nla_put_failure:
6488 nlmsg_free(msg);
6489 return ret;
6490 }
6493 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
6494 u8 *bssid)
6495 {
6496 struct nl_msg *msg;
6497 int ret;
6498 struct nl80211_bss_info_arg arg;
6500 os_memset(&arg, 0, sizeof(arg));
6501 msg = nlmsg_alloc();
6502 if (!msg)
6503 goto nla_put_failure;
6505 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
6506 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6508 arg.drv = drv;
6509 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
6510 msg = NULL;
6511 if (ret == 0) {
6512 if (is_zero_ether_addr(arg.assoc_bssid))
6513 return -ENOTCONN;
6514 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
6515 return 0;
6516 }
6517 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
6518 "(%s)", ret, strerror(-ret));
6519 nla_put_failure:
6520 nlmsg_free(msg);
6521 return drv->assoc_freq;
6522 }
6525 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
6526 const u8 *bssid)
6527 {
6528 u8 addr[ETH_ALEN];
6530 if (bssid == NULL) {
6531 int res = nl80211_get_assoc_bssid(drv, addr);
6532 if (res)
6533 return res;
6534 bssid = addr;
6535 }
6537 return wpa_driver_nl80211_disconnect(drv, bssid,
6538 WLAN_REASON_PREV_AUTH_NOT_VALID);
6539 }
6542 static int wpa_driver_nl80211_connect(
6543 struct wpa_driver_nl80211_data *drv,
6544 struct wpa_driver_associate_params *params)
6545 {
6546 struct nl_msg *msg;
6547 enum nl80211_auth_type type;
6548 int ret = 0;
6549 int algs;
6551 msg = nlmsg_alloc();
6552 if (!msg)
6553 return -1;
6555 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
6556 nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
6558 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6559 if (params->bssid) {
6560 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
6561 MAC2STR(params->bssid));
6562 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6563 }
6564 if (params->freq) {
6565 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6566 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6567 }
6568 if (params->ssid) {
6569 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6570 params->ssid, params->ssid_len);
6571 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6572 params->ssid);
6573 if (params->ssid_len > sizeof(drv->ssid))
6574 goto nla_put_failure;
6575 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6576 drv->ssid_len = params->ssid_len;
6577 }
6578 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
6579 if (params->wpa_ie)
6580 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6581 params->wpa_ie);
6583 algs = 0;
6584 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6585 algs++;
6586 if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6587 algs++;
6588 if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6589 algs++;
6590 if (algs > 1) {
6591 wpa_printf(MSG_DEBUG, " * Leave out Auth Type for automatic "
6592 "selection");
6593 goto skip_auth_type;
6594 }
6596 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6597 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
6598 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6599 type = NL80211_AUTHTYPE_SHARED_KEY;
6600 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6601 type = NL80211_AUTHTYPE_NETWORK_EAP;
6602 else if (params->auth_alg & WPA_AUTH_ALG_FT)
6603 type = NL80211_AUTHTYPE_FT;
6604 else
6605 goto nla_put_failure;
6607 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
6608 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
6610 skip_auth_type:
6611 if (params->wpa_proto) {
6612 enum nl80211_wpa_versions ver = 0;
6614 if (params->wpa_proto & WPA_PROTO_WPA)
6615 ver |= NL80211_WPA_VERSION_1;
6616 if (params->wpa_proto & WPA_PROTO_RSN)
6617 ver |= NL80211_WPA_VERSION_2;
6619 wpa_printf(MSG_DEBUG, " * WPA Versions 0x%x", ver);
6620 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
6621 }
6623 if (params->pairwise_suite != CIPHER_NONE) {
6624 int cipher;
6626 switch (params->pairwise_suite) {
6627 case CIPHER_WEP40:
6628 cipher = WLAN_CIPHER_SUITE_WEP40;
6629 break;
6630 case CIPHER_WEP104:
6631 cipher = WLAN_CIPHER_SUITE_WEP104;
6632 break;
6633 case CIPHER_CCMP:
6634 cipher = WLAN_CIPHER_SUITE_CCMP;
6635 break;
6636 case CIPHER_TKIP:
6637 default:
6638 cipher = WLAN_CIPHER_SUITE_TKIP;
6639 break;
6640 }
6641 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6642 }
6644 if (params->group_suite != CIPHER_NONE) {
6645 int cipher;
6647 switch (params->group_suite) {
6648 case CIPHER_WEP40:
6649 cipher = WLAN_CIPHER_SUITE_WEP40;
6650 break;
6651 case CIPHER_WEP104:
6652 cipher = WLAN_CIPHER_SUITE_WEP104;
6653 break;
6654 case CIPHER_CCMP:
6655 cipher = WLAN_CIPHER_SUITE_CCMP;
6656 break;
6657 case CIPHER_TKIP:
6658 default:
6659 cipher = WLAN_CIPHER_SUITE_TKIP;
6660 break;
6661 }
6662 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6663 }
6665 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6666 params->key_mgmt_suite == KEY_MGMT_PSK) {
6667 int mgmt = WLAN_AKM_SUITE_PSK;
6669 switch (params->key_mgmt_suite) {
6670 case KEY_MGMT_802_1X:
6671 mgmt = WLAN_AKM_SUITE_8021X;
6672 break;
6673 case KEY_MGMT_PSK:
6674 default:
6675 mgmt = WLAN_AKM_SUITE_PSK;
6676 break;
6677 }
6678 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
6679 }
6681 if (params->disable_ht)
6682 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6684 if (params->htcaps && params->htcaps_mask) {
6685 int sz = sizeof(struct ieee80211_ht_capabilities);
6686 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6687 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6688 params->htcaps_mask);
6689 }
6691 ret = nl80211_set_conn_keys(params, msg);
6692 if (ret)
6693 goto nla_put_failure;
6695 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6696 msg = NULL;
6697 if (ret) {
6698 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
6699 "(%s)", ret, strerror(-ret));
6700 /*
6701 * cfg80211 does not currently accept new connection if we are
6702 * already connected. As a workaround, force disconnection and
6703 * try again once the driver indicates it completed
6704 * disconnection.
6705 */
6706 if (ret == -EALREADY)
6707 nl80211_disconnect(drv, params->bssid);
6708 goto nla_put_failure;
6709 }
6710 ret = 0;
6711 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
6713 nla_put_failure:
6714 nlmsg_free(msg);
6715 return ret;
6717 }
6720 static int wpa_driver_nl80211_associate(
6721 void *priv, struct wpa_driver_associate_params *params)
6722 {
6723 struct i802_bss *bss = priv;
6724 struct wpa_driver_nl80211_data *drv = bss->drv;
6725 int ret = -1;
6726 struct nl_msg *msg;
6728 if (params->mode == IEEE80211_MODE_AP)
6729 return wpa_driver_nl80211_ap(drv, params);
6731 if (params->mode == IEEE80211_MODE_IBSS)
6732 return wpa_driver_nl80211_ibss(drv, params);
6734 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
6735 enum nl80211_iftype nlmode = params->p2p ?
6736 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
6738 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
6739 return -1;
6740 return wpa_driver_nl80211_connect(drv, params);
6741 }
6743 drv->associated = 0;
6745 msg = nlmsg_alloc();
6746 if (!msg)
6747 return -1;
6749 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
6750 drv->ifindex);
6751 nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
6753 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6754 if (params->bssid) {
6755 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
6756 MAC2STR(params->bssid));
6757 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6758 }
6759 if (params->freq) {
6760 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
6761 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6762 drv->assoc_freq = params->freq;
6763 } else
6764 drv->assoc_freq = 0;
6765 if (params->ssid) {
6766 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
6767 params->ssid, params->ssid_len);
6768 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6769 params->ssid);
6770 if (params->ssid_len > sizeof(drv->ssid))
6771 goto nla_put_failure;
6772 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6773 drv->ssid_len = params->ssid_len;
6774 }
6775 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
6776 if (params->wpa_ie)
6777 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6778 params->wpa_ie);
6780 if (params->pairwise_suite != CIPHER_NONE) {
6781 int cipher;
6783 switch (params->pairwise_suite) {
6784 case CIPHER_WEP40:
6785 cipher = WLAN_CIPHER_SUITE_WEP40;
6786 break;
6787 case CIPHER_WEP104:
6788 cipher = WLAN_CIPHER_SUITE_WEP104;
6789 break;
6790 case CIPHER_CCMP:
6791 cipher = WLAN_CIPHER_SUITE_CCMP;
6792 break;
6793 case CIPHER_TKIP:
6794 default:
6795 cipher = WLAN_CIPHER_SUITE_TKIP;
6796 break;
6797 }
6798 wpa_printf(MSG_DEBUG, " * pairwise=0x%x", cipher);
6799 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6800 }
6802 if (params->group_suite != CIPHER_NONE) {
6803 int cipher;
6805 switch (params->group_suite) {
6806 case CIPHER_WEP40:
6807 cipher = WLAN_CIPHER_SUITE_WEP40;
6808 break;
6809 case CIPHER_WEP104:
6810 cipher = WLAN_CIPHER_SUITE_WEP104;
6811 break;
6812 case CIPHER_CCMP:
6813 cipher = WLAN_CIPHER_SUITE_CCMP;
6814 break;
6815 case CIPHER_TKIP:
6816 default:
6817 cipher = WLAN_CIPHER_SUITE_TKIP;
6818 break;
6819 }
6820 wpa_printf(MSG_DEBUG, " * group=0x%x", cipher);
6821 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6822 }
6824 #ifdef CONFIG_IEEE80211W
6825 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
6826 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
6827 #endif /* CONFIG_IEEE80211W */
6829 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6831 if (params->prev_bssid) {
6832 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
6833 MAC2STR(params->prev_bssid));
6834 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
6835 params->prev_bssid);
6836 }
6838 if (params->disable_ht)
6839 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6841 if (params->htcaps && params->htcaps_mask) {
6842 int sz = sizeof(struct ieee80211_ht_capabilities);
6843 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6844 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6845 params->htcaps_mask);
6846 }
6848 if (params->p2p)
6849 wpa_printf(MSG_DEBUG, " * P2P group");
6851 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6852 msg = NULL;
6853 if (ret) {
6854 wpa_dbg(drv->ctx, MSG_DEBUG,
6855 "nl80211: MLME command failed (assoc): ret=%d (%s)",
6856 ret, strerror(-ret));
6857 nl80211_dump_scan(drv);
6858 goto nla_put_failure;
6859 }
6860 ret = 0;
6861 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
6862 "successfully");
6864 nla_put_failure:
6865 nlmsg_free(msg);
6866 return ret;
6867 }
6870 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
6871 int ifindex, enum nl80211_iftype mode)
6872 {
6873 struct nl_msg *msg;
6874 int ret = -ENOBUFS;
6876 wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
6877 ifindex, mode, nl80211_iftype_str(mode));
6879 msg = nlmsg_alloc();
6880 if (!msg)
6881 return -ENOMEM;
6883 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
6884 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
6885 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
6887 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6888 msg = NULL;
6889 if (!ret)
6890 return 0;
6891 nla_put_failure:
6892 nlmsg_free(msg);
6893 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
6894 " %d (%s)", ifindex, mode, ret, strerror(-ret));
6895 return ret;
6896 }
6899 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
6900 enum nl80211_iftype nlmode)
6901 {
6902 struct wpa_driver_nl80211_data *drv = bss->drv;
6903 int ret = -1;
6904 int i;
6905 int was_ap = is_ap_interface(drv->nlmode);
6906 int res;
6908 res = nl80211_set_mode(drv, drv->ifindex, nlmode);
6909 if (res == 0) {
6910 drv->nlmode = nlmode;
6911 ret = 0;
6912 goto done;
6913 }
6915 if (res == -ENODEV)
6916 return -1;
6918 if (nlmode == drv->nlmode) {
6919 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
6920 "requested mode - ignore error");
6921 ret = 0;
6922 goto done; /* Already in the requested mode */
6923 }
6925 /* mac80211 doesn't allow mode changes while the device is up, so
6926 * take the device down, try to set the mode again, and bring the
6927 * device back up.
6928 */
6929 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
6930 "interface down");
6931 for (i = 0; i < 10; i++) {
6932 res = linux_set_iface_flags(drv->global->ioctl_sock,
6933 bss->ifname, 0);
6934 if (res == -EACCES || res == -ENODEV)
6935 break;
6936 if (res == 0) {
6937 /* Try to set the mode again while the interface is
6938 * down */
6939 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
6940 if (ret == -EACCES)
6941 break;
6942 res = linux_set_iface_flags(drv->global->ioctl_sock,
6943 bss->ifname, 1);
6944 if (res && !ret)
6945 ret = -1;
6946 else if (ret != -EBUSY)
6947 break;
6948 } else
6949 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
6950 "interface down");
6951 os_sleep(0, 100000);
6952 }
6954 if (!ret) {
6955 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
6956 "interface is down");
6957 drv->nlmode = nlmode;
6958 drv->ignore_if_down_event = 1;
6959 }
6961 done:
6962 if (ret) {
6963 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
6964 "from %d failed", nlmode, drv->nlmode);
6965 return ret;
6966 }
6968 if (is_ap_interface(nlmode)) {
6969 nl80211_mgmt_unsubscribe(bss, "start AP");
6970 /* Setup additional AP mode functionality if needed */
6971 if (nl80211_setup_ap(bss))
6972 return -1;
6973 } else if (was_ap) {
6974 /* Remove additional AP mode functionality */
6975 nl80211_teardown_ap(bss);
6976 } else {
6977 nl80211_mgmt_unsubscribe(bss, "mode change");
6978 }
6980 if (!is_ap_interface(nlmode) &&
6981 nl80211_mgmt_subscribe_non_ap(bss) < 0)
6982 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
6983 "frame processing - ignore for now");
6985 return 0;
6986 }
6989 static int wpa_driver_nl80211_get_capa(void *priv,
6990 struct wpa_driver_capa *capa)
6991 {
6992 struct i802_bss *bss = priv;
6993 struct wpa_driver_nl80211_data *drv = bss->drv;
6994 if (!drv->has_capability)
6995 return -1;
6996 os_memcpy(capa, &drv->capa, sizeof(*capa));
6997 return 0;
6998 }
7001 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
7002 {
7003 struct i802_bss *bss = priv;
7004 struct wpa_driver_nl80211_data *drv = bss->drv;
7006 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
7007 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
7008 drv->operstate = state;
7009 return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
7010 state ? IF_OPER_UP : IF_OPER_DORMANT);
7011 }
7014 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
7015 {
7016 struct i802_bss *bss = priv;
7017 struct wpa_driver_nl80211_data *drv = bss->drv;
7018 struct nl_msg *msg;
7019 struct nl80211_sta_flag_update upd;
7021 msg = nlmsg_alloc();
7022 if (!msg)
7023 return -ENOMEM;
7025 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7027 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7028 if_nametoindex(bss->ifname));
7029 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
7031 os_memset(&upd, 0, sizeof(upd));
7032 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
7033 if (authorized)
7034 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
7035 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7037 return send_and_recv_msgs(drv, msg, NULL, NULL);
7038 nla_put_failure:
7039 nlmsg_free(msg);
7040 return -ENOBUFS;
7041 }
7044 /* Set kernel driver on given frequency (MHz) */
7045 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
7046 {
7047 struct i802_bss *bss = priv;
7048 return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled,
7049 freq->sec_channel_offset);
7050 }
7053 #if defined(HOSTAPD) || defined(CONFIG_AP)
7055 static inline int min_int(int a, int b)
7056 {
7057 if (a < b)
7058 return a;
7059 return b;
7060 }
7063 static int get_key_handler(struct nl_msg *msg, void *arg)
7064 {
7065 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7066 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7068 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7069 genlmsg_attrlen(gnlh, 0), NULL);
7071 /*
7072 * TODO: validate the key index and mac address!
7073 * Otherwise, there's a race condition as soon as
7074 * the kernel starts sending key notifications.
7075 */
7077 if (tb[NL80211_ATTR_KEY_SEQ])
7078 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
7079 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
7080 return NL_SKIP;
7081 }
7084 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
7085 int idx, u8 *seq)
7086 {
7087 struct i802_bss *bss = priv;
7088 struct wpa_driver_nl80211_data *drv = bss->drv;
7089 struct nl_msg *msg;
7091 msg = nlmsg_alloc();
7092 if (!msg)
7093 return -ENOMEM;
7095 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
7097 if (addr)
7098 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7099 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
7100 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
7102 memset(seq, 0, 6);
7104 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
7105 nla_put_failure:
7106 nlmsg_free(msg);
7107 return -ENOBUFS;
7108 }
7111 static int i802_set_rts(void *priv, int rts)
7112 {
7113 struct i802_bss *bss = priv;
7114 struct wpa_driver_nl80211_data *drv = bss->drv;
7115 struct nl_msg *msg;
7116 int ret = -ENOBUFS;
7117 u32 val;
7119 msg = nlmsg_alloc();
7120 if (!msg)
7121 return -ENOMEM;
7123 if (rts >= 2347)
7124 val = (u32) -1;
7125 else
7126 val = rts;
7128 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7129 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7130 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
7132 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7133 msg = NULL;
7134 if (!ret)
7135 return 0;
7136 nla_put_failure:
7137 nlmsg_free(msg);
7138 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
7139 "%d (%s)", rts, ret, strerror(-ret));
7140 return ret;
7141 }
7144 static int i802_set_frag(void *priv, int frag)
7145 {
7146 struct i802_bss *bss = priv;
7147 struct wpa_driver_nl80211_data *drv = bss->drv;
7148 struct nl_msg *msg;
7149 int ret = -ENOBUFS;
7150 u32 val;
7152 msg = nlmsg_alloc();
7153 if (!msg)
7154 return -ENOMEM;
7156 if (frag >= 2346)
7157 val = (u32) -1;
7158 else
7159 val = frag;
7161 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7162 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7163 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
7165 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7166 msg = NULL;
7167 if (!ret)
7168 return 0;
7169 nla_put_failure:
7170 nlmsg_free(msg);
7171 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
7172 "%d: %d (%s)", frag, ret, strerror(-ret));
7173 return ret;
7174 }
7177 static int i802_flush(void *priv)
7178 {
7179 struct i802_bss *bss = priv;
7180 struct wpa_driver_nl80211_data *drv = bss->drv;
7181 struct nl_msg *msg;
7182 int res;
7184 msg = nlmsg_alloc();
7185 if (!msg)
7186 return -1;
7188 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
7190 /*
7191 * XXX: FIX! this needs to flush all VLANs too
7192 */
7193 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7194 if_nametoindex(bss->ifname));
7196 res = send_and_recv_msgs(drv, msg, NULL, NULL);
7197 if (res) {
7198 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
7199 "(%s)", res, strerror(-res));
7200 }
7201 return res;
7202 nla_put_failure:
7203 nlmsg_free(msg);
7204 return -ENOBUFS;
7205 }
7208 static int get_sta_handler(struct nl_msg *msg, void *arg)
7209 {
7210 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7211 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7212 struct hostap_sta_driver_data *data = arg;
7213 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
7214 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
7215 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
7216 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
7217 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
7218 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
7219 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
7220 };
7222 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7223 genlmsg_attrlen(gnlh, 0), NULL);
7225 /*
7226 * TODO: validate the interface and mac address!
7227 * Otherwise, there's a race condition as soon as
7228 * the kernel starts sending station notifications.
7229 */
7231 if (!tb[NL80211_ATTR_STA_INFO]) {
7232 wpa_printf(MSG_DEBUG, "sta stats missing!");
7233 return NL_SKIP;
7234 }
7235 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
7236 tb[NL80211_ATTR_STA_INFO],
7237 stats_policy)) {
7238 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
7239 return NL_SKIP;
7240 }
7242 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
7243 data->inactive_msec =
7244 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
7245 if (stats[NL80211_STA_INFO_RX_BYTES])
7246 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
7247 if (stats[NL80211_STA_INFO_TX_BYTES])
7248 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
7249 if (stats[NL80211_STA_INFO_RX_PACKETS])
7250 data->rx_packets =
7251 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
7252 if (stats[NL80211_STA_INFO_TX_PACKETS])
7253 data->tx_packets =
7254 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
7256 return NL_SKIP;
7257 }
7259 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
7260 const u8 *addr)
7261 {
7262 struct i802_bss *bss = priv;
7263 struct wpa_driver_nl80211_data *drv = bss->drv;
7264 struct nl_msg *msg;
7266 os_memset(data, 0, sizeof(*data));
7267 msg = nlmsg_alloc();
7268 if (!msg)
7269 return -ENOMEM;
7271 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
7273 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7274 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7276 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
7277 nla_put_failure:
7278 nlmsg_free(msg);
7279 return -ENOBUFS;
7280 }
7283 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
7284 int cw_min, int cw_max, int burst_time)
7285 {
7286 struct i802_bss *bss = priv;
7287 struct wpa_driver_nl80211_data *drv = bss->drv;
7288 struct nl_msg *msg;
7289 struct nlattr *txq, *params;
7291 msg = nlmsg_alloc();
7292 if (!msg)
7293 return -1;
7295 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7297 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7299 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
7300 if (!txq)
7301 goto nla_put_failure;
7303 /* We are only sending parameters for a single TXQ at a time */
7304 params = nla_nest_start(msg, 1);
7305 if (!params)
7306 goto nla_put_failure;
7308 switch (queue) {
7309 case 0:
7310 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
7311 break;
7312 case 1:
7313 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
7314 break;
7315 case 2:
7316 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
7317 break;
7318 case 3:
7319 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
7320 break;
7321 }
7322 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
7323 * 32 usec, so need to convert the value here. */
7324 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
7325 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
7326 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
7327 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
7329 nla_nest_end(msg, params);
7331 nla_nest_end(msg, txq);
7333 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7334 return 0;
7335 msg = NULL;
7336 nla_put_failure:
7337 nlmsg_free(msg);
7338 return -1;
7339 }
7342 static int i802_set_sta_vlan(void *priv, const u8 *addr,
7343 const char *ifname, int vlan_id)
7344 {
7345 struct i802_bss *bss = priv;
7346 struct wpa_driver_nl80211_data *drv = bss->drv;
7347 struct nl_msg *msg;
7348 int ret = -ENOBUFS;
7350 msg = nlmsg_alloc();
7351 if (!msg)
7352 return -ENOMEM;
7354 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7356 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7357 if_nametoindex(bss->ifname));
7358 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7359 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
7360 if_nametoindex(ifname));
7362 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7363 msg = NULL;
7364 if (ret < 0) {
7365 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
7366 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
7367 MAC2STR(addr), ifname, vlan_id, ret,
7368 strerror(-ret));
7369 }
7370 nla_put_failure:
7371 nlmsg_free(msg);
7372 return ret;
7373 }
7376 static int i802_get_inact_sec(void *priv, const u8 *addr)
7377 {
7378 struct hostap_sta_driver_data data;
7379 int ret;
7381 data.inactive_msec = (unsigned long) -1;
7382 ret = i802_read_sta_data(priv, &data, addr);
7383 if (ret || data.inactive_msec == (unsigned long) -1)
7384 return -1;
7385 return data.inactive_msec / 1000;
7386 }
7389 static int i802_sta_clear_stats(void *priv, const u8 *addr)
7390 {
7391 #if 0
7392 /* TODO */
7393 #endif
7394 return 0;
7395 }
7398 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
7399 int reason)
7400 {
7401 struct i802_bss *bss = priv;
7402 struct ieee80211_mgmt mgmt;
7404 memset(&mgmt, 0, sizeof(mgmt));
7405 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7406 WLAN_FC_STYPE_DEAUTH);
7407 memcpy(mgmt.da, addr, ETH_ALEN);
7408 memcpy(mgmt.sa, own_addr, ETH_ALEN);
7409 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7410 mgmt.u.deauth.reason_code = host_to_le16(reason);
7411 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7412 IEEE80211_HDRLEN +
7413 sizeof(mgmt.u.deauth), 0);
7414 }
7417 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
7418 int reason)
7419 {
7420 struct i802_bss *bss = priv;
7421 struct ieee80211_mgmt mgmt;
7423 memset(&mgmt, 0, sizeof(mgmt));
7424 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7425 WLAN_FC_STYPE_DISASSOC);
7426 memcpy(mgmt.da, addr, ETH_ALEN);
7427 memcpy(mgmt.sa, own_addr, ETH_ALEN);
7428 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7429 mgmt.u.disassoc.reason_code = host_to_le16(reason);
7430 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7431 IEEE80211_HDRLEN +
7432 sizeof(mgmt.u.disassoc), 0);
7433 }
7435 #endif /* HOSTAPD || CONFIG_AP */
7437 #ifdef HOSTAPD
7439 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7440 {
7441 int i;
7442 int *old;
7444 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
7445 ifidx);
7446 for (i = 0; i < drv->num_if_indices; i++) {
7447 if (drv->if_indices[i] == 0) {
7448 drv->if_indices[i] = ifidx;
7449 return;
7450 }
7451 }
7453 if (drv->if_indices != drv->default_if_indices)
7454 old = drv->if_indices;
7455 else
7456 old = NULL;
7458 drv->if_indices = os_realloc(old,
7459 sizeof(int) * (drv->num_if_indices + 1));
7460 if (!drv->if_indices) {
7461 if (!old)
7462 drv->if_indices = drv->default_if_indices;
7463 else
7464 drv->if_indices = old;
7465 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
7466 "interfaces");
7467 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
7468 return;
7469 } else if (!old)
7470 os_memcpy(drv->if_indices, drv->default_if_indices,
7471 sizeof(drv->default_if_indices));
7472 drv->if_indices[drv->num_if_indices] = ifidx;
7473 drv->num_if_indices++;
7474 }
7477 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7478 {
7479 int i;
7481 for (i = 0; i < drv->num_if_indices; i++) {
7482 if (drv->if_indices[i] == ifidx) {
7483 drv->if_indices[i] = 0;
7484 break;
7485 }
7486 }
7487 }
7490 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7491 {
7492 int i;
7494 for (i = 0; i < drv->num_if_indices; i++)
7495 if (drv->if_indices[i] == ifidx)
7496 return 1;
7498 return 0;
7499 }
7502 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
7503 const char *bridge_ifname)
7504 {
7505 struct i802_bss *bss = priv;
7506 struct wpa_driver_nl80211_data *drv = bss->drv;
7507 char name[IFNAMSIZ + 1];
7509 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
7510 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
7511 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
7512 if (val) {
7513 if (!if_nametoindex(name)) {
7514 if (nl80211_create_iface(drv, name,
7515 NL80211_IFTYPE_AP_VLAN,
7516 NULL, 1) < 0)
7517 return -1;
7518 if (bridge_ifname &&
7519 linux_br_add_if(drv->global->ioctl_sock,
7520 bridge_ifname, name) < 0)
7521 return -1;
7522 }
7523 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
7524 return i802_set_sta_vlan(priv, addr, name, 0);
7525 } else {
7526 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
7527 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
7528 name);
7529 }
7530 }
7533 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
7534 {
7535 struct wpa_driver_nl80211_data *drv = eloop_ctx;
7536 struct sockaddr_ll lladdr;
7537 unsigned char buf[3000];
7538 int len;
7539 socklen_t fromlen = sizeof(lladdr);
7541 len = recvfrom(sock, buf, sizeof(buf), 0,
7542 (struct sockaddr *)&lladdr, &fromlen);
7543 if (len < 0) {
7544 perror("recv");
7545 return;
7546 }
7548 if (have_ifidx(drv, lladdr.sll_ifindex))
7549 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
7550 }
7553 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
7554 struct i802_bss *bss,
7555 const char *brname, const char *ifname)
7556 {
7557 int ifindex;
7558 char in_br[IFNAMSIZ];
7560 os_strlcpy(bss->brname, brname, IFNAMSIZ);
7561 ifindex = if_nametoindex(brname);
7562 if (ifindex == 0) {
7563 /*
7564 * Bridge was configured, but the bridge device does
7565 * not exist. Try to add it now.
7566 */
7567 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
7568 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
7569 "bridge interface %s: %s",
7570 brname, strerror(errno));
7571 return -1;
7572 }
7573 bss->added_bridge = 1;
7574 add_ifidx(drv, if_nametoindex(brname));
7575 }
7577 if (linux_br_get(in_br, ifname) == 0) {
7578 if (os_strcmp(in_br, brname) == 0)
7579 return 0; /* already in the bridge */
7581 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
7582 "bridge %s", ifname, in_br);
7583 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
7584 0) {
7585 wpa_printf(MSG_ERROR, "nl80211: Failed to "
7586 "remove interface %s from bridge "
7587 "%s: %s",
7588 ifname, brname, strerror(errno));
7589 return -1;
7590 }
7591 }
7593 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
7594 ifname, brname);
7595 if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
7596 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
7597 "into bridge %s: %s",
7598 ifname, brname, strerror(errno));
7599 return -1;
7600 }
7601 bss->added_if_into_bridge = 1;
7603 return 0;
7604 }
7607 static void *i802_init(struct hostapd_data *hapd,
7608 struct wpa_init_params *params)
7609 {
7610 struct wpa_driver_nl80211_data *drv;
7611 struct i802_bss *bss;
7612 size_t i;
7613 char brname[IFNAMSIZ];
7614 int ifindex, br_ifindex;
7615 int br_added = 0;
7617 bss = wpa_driver_nl80211_init(hapd, params->ifname,
7618 params->global_priv);
7619 if (bss == NULL)
7620 return NULL;
7622 drv = bss->drv;
7623 drv->nlmode = NL80211_IFTYPE_AP;
7624 drv->eapol_sock = -1;
7626 if (linux_br_get(brname, params->ifname) == 0) {
7627 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
7628 params->ifname, brname);
7629 br_ifindex = if_nametoindex(brname);
7630 } else {
7631 brname[0] = '\0';
7632 br_ifindex = 0;
7633 }
7635 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
7636 drv->if_indices = drv->default_if_indices;
7637 for (i = 0; i < params->num_bridge; i++) {
7638 if (params->bridge[i]) {
7639 ifindex = if_nametoindex(params->bridge[i]);
7640 if (ifindex)
7641 add_ifidx(drv, ifindex);
7642 if (ifindex == br_ifindex)
7643 br_added = 1;
7644 }
7645 }
7646 if (!br_added && br_ifindex &&
7647 (params->num_bridge == 0 || !params->bridge[0]))
7648 add_ifidx(drv, br_ifindex);
7650 /* start listening for EAPOL on the default AP interface */
7651 add_ifidx(drv, drv->ifindex);
7653 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
7654 goto failed;
7656 if (params->bssid) {
7657 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7658 params->bssid))
7659 goto failed;
7660 }
7662 if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
7663 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
7664 "into AP mode", bss->ifname);
7665 goto failed;
7666 }
7668 if (params->num_bridge && params->bridge[0] &&
7669 i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
7670 goto failed;
7672 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
7673 goto failed;
7675 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
7676 if (drv->eapol_sock < 0) {
7677 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
7678 goto failed;
7679 }
7681 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
7682 {
7683 printf("Could not register read socket for eapol\n");
7684 goto failed;
7685 }
7687 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7688 params->own_addr))
7689 goto failed;
7691 memcpy(bss->addr, params->own_addr, ETH_ALEN);
7693 return bss;
7695 failed:
7696 wpa_driver_nl80211_deinit(bss);
7697 return NULL;
7698 }
7701 static void i802_deinit(void *priv)
7702 {
7703 wpa_driver_nl80211_deinit(priv);
7704 }
7706 #endif /* HOSTAPD */
7709 static enum nl80211_iftype wpa_driver_nl80211_if_type(
7710 enum wpa_driver_if_type type)
7711 {
7712 switch (type) {
7713 case WPA_IF_STATION:
7714 return NL80211_IFTYPE_STATION;
7715 case WPA_IF_P2P_CLIENT:
7716 case WPA_IF_P2P_GROUP:
7717 return NL80211_IFTYPE_P2P_CLIENT;
7718 case WPA_IF_AP_VLAN:
7719 return NL80211_IFTYPE_AP_VLAN;
7720 case WPA_IF_AP_BSS:
7721 return NL80211_IFTYPE_AP;
7722 case WPA_IF_P2P_GO:
7723 return NL80211_IFTYPE_P2P_GO;
7724 }
7725 return -1;
7726 }
7729 #ifdef CONFIG_P2P
7731 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
7732 {
7733 struct wpa_driver_nl80211_data *drv;
7734 dl_list_for_each(drv, &global->interfaces,
7735 struct wpa_driver_nl80211_data, list) {
7736 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0)
7737 return 1;
7738 }
7739 return 0;
7740 }
7743 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
7744 u8 *new_addr)
7745 {
7746 unsigned int idx;
7748 if (!drv->global)
7749 return -1;
7751 os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN);
7752 for (idx = 0; idx < 64; idx++) {
7753 new_addr[0] = drv->first_bss.addr[0] | 0x02;
7754 new_addr[0] ^= idx << 2;
7755 if (!nl80211_addr_in_use(drv->global, new_addr))
7756 break;
7757 }
7758 if (idx == 64)
7759 return -1;
7761 wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
7762 MACSTR, MAC2STR(new_addr));
7764 return 0;
7765 }
7767 #endif /* CONFIG_P2P */
7770 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
7771 const char *ifname, const u8 *addr,
7772 void *bss_ctx, void **drv_priv,
7773 char *force_ifname, u8 *if_addr,
7774 const char *bridge)
7775 {
7776 struct i802_bss *bss = priv;
7777 struct wpa_driver_nl80211_data *drv = bss->drv;
7778 int ifidx;
7779 #ifdef HOSTAPD
7780 struct i802_bss *new_bss = NULL;
7782 if (type == WPA_IF_AP_BSS) {
7783 new_bss = os_zalloc(sizeof(*new_bss));
7784 if (new_bss == NULL)
7785 return -1;
7786 }
7787 #endif /* HOSTAPD */
7789 if (addr)
7790 os_memcpy(if_addr, addr, ETH_ALEN);
7791 ifidx = nl80211_create_iface(drv, ifname,
7792 wpa_driver_nl80211_if_type(type), addr,
7793 0);
7794 if (ifidx < 0) {
7795 #ifdef HOSTAPD
7796 os_free(new_bss);
7797 #endif /* HOSTAPD */
7798 return -1;
7799 }
7801 if (!addr &&
7802 linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7803 if_addr) < 0) {
7804 nl80211_remove_iface(drv, ifidx);
7805 return -1;
7806 }
7808 #ifdef CONFIG_P2P
7809 if (!addr &&
7810 (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
7811 type == WPA_IF_P2P_GO)) {
7812 /* Enforce unique P2P Interface Address */
7813 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
7815 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7816 own_addr) < 0 ||
7817 linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
7818 new_addr) < 0) {
7819 nl80211_remove_iface(drv, ifidx);
7820 return -1;
7821 }
7822 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
7823 wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
7824 "for P2P group interface");
7825 if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
7826 nl80211_remove_iface(drv, ifidx);
7827 return -1;
7828 }
7829 if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
7830 new_addr) < 0) {
7831 nl80211_remove_iface(drv, ifidx);
7832 return -1;
7833 }
7834 }
7835 os_memcpy(if_addr, new_addr, ETH_ALEN);
7836 }
7837 #endif /* CONFIG_P2P */
7839 #ifdef HOSTAPD
7840 if (bridge &&
7841 i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
7842 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
7843 "interface %s to a bridge %s", ifname, bridge);
7844 nl80211_remove_iface(drv, ifidx);
7845 os_free(new_bss);
7846 return -1;
7847 }
7849 if (type == WPA_IF_AP_BSS) {
7850 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
7851 {
7852 nl80211_remove_iface(drv, ifidx);
7853 os_free(new_bss);
7854 return -1;
7855 }
7856 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
7857 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
7858 new_bss->ifindex = ifidx;
7859 new_bss->drv = drv;
7860 new_bss->next = drv->first_bss.next;
7861 new_bss->freq = drv->first_bss.freq;
7862 drv->first_bss.next = new_bss;
7863 if (drv_priv)
7864 *drv_priv = new_bss;
7865 nl80211_init_bss(new_bss);
7867 /* Subscribe management frames for this WPA_IF_AP_BSS */
7868 if (nl80211_setup_ap(new_bss))
7869 return -1;
7870 }
7871 #endif /* HOSTAPD */
7873 if (drv->global)
7874 drv->global->if_add_ifindex = ifidx;
7876 return 0;
7877 }
7880 static int wpa_driver_nl80211_if_remove(void *priv,
7881 enum wpa_driver_if_type type,
7882 const char *ifname)
7883 {
7884 struct i802_bss *bss = priv;
7885 struct wpa_driver_nl80211_data *drv = bss->drv;
7886 int ifindex = if_nametoindex(ifname);
7888 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
7889 __func__, type, ifname, ifindex);
7890 if (ifindex <= 0)
7891 return -1;
7893 #ifdef HOSTAPD
7894 if (bss->added_if_into_bridge) {
7895 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
7896 bss->ifname) < 0)
7897 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
7898 "interface %s from bridge %s: %s",
7899 bss->ifname, bss->brname, strerror(errno));
7900 }
7901 if (bss->added_bridge) {
7902 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
7903 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
7904 "bridge %s: %s",
7905 bss->brname, strerror(errno));
7906 }
7907 #endif /* HOSTAPD */
7909 nl80211_remove_iface(drv, ifindex);
7911 #ifdef HOSTAPD
7912 if (type != WPA_IF_AP_BSS)
7913 return 0;
7915 if (bss != &drv->first_bss) {
7916 struct i802_bss *tbss;
7918 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
7919 if (tbss->next == bss) {
7920 tbss->next = bss->next;
7921 /* Unsubscribe management frames */
7922 nl80211_teardown_ap(bss);
7923 nl80211_destroy_bss(bss);
7924 os_free(bss);
7925 bss = NULL;
7926 break;
7927 }
7928 }
7929 if (bss)
7930 wpa_printf(MSG_INFO, "nl80211: %s - could not find "
7931 "BSS %p in the list", __func__, bss);
7932 }
7933 #endif /* HOSTAPD */
7935 return 0;
7936 }
7939 static int cookie_handler(struct nl_msg *msg, void *arg)
7940 {
7941 struct nlattr *tb[NL80211_ATTR_MAX + 1];
7942 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7943 u64 *cookie = arg;
7944 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7945 genlmsg_attrlen(gnlh, 0), NULL);
7946 if (tb[NL80211_ATTR_COOKIE])
7947 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
7948 return NL_SKIP;
7949 }
7952 static int nl80211_send_frame_cmd(struct i802_bss *bss,
7953 unsigned int freq, unsigned int wait,
7954 const u8 *buf, size_t buf_len,
7955 u64 *cookie_out, int no_cck, int no_ack,
7956 int offchanok)
7957 {
7958 struct wpa_driver_nl80211_data *drv = bss->drv;
7959 struct nl_msg *msg;
7960 u64 cookie;
7961 int ret = -1;
7963 msg = nlmsg_alloc();
7964 if (!msg)
7965 return -1;
7967 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
7969 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
7970 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7971 if (wait)
7972 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
7973 if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
7974 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
7975 if (no_cck)
7976 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
7977 if (no_ack)
7978 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
7980 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
7982 cookie = 0;
7983 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
7984 msg = NULL;
7985 if (ret) {
7986 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
7987 "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
7988 freq, wait);
7989 goto nla_put_failure;
7990 }
7991 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; "
7992 "cookie 0x%llx", no_ack ? " (no ACK)" : "",
7993 (long long unsigned int) cookie);
7995 if (cookie_out)
7996 *cookie_out = no_ack ? (u64) -1 : cookie;
7998 nla_put_failure:
7999 nlmsg_free(msg);
8000 return ret;
8001 }
8004 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
8005 unsigned int wait_time,
8006 const u8 *dst, const u8 *src,
8007 const u8 *bssid,
8008 const u8 *data, size_t data_len,
8009 int no_cck)
8010 {
8011 struct i802_bss *bss = priv;
8012 struct wpa_driver_nl80211_data *drv = bss->drv;
8013 int ret = -1;
8014 u8 *buf;
8015 struct ieee80211_hdr *hdr;
8017 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
8018 "freq=%u MHz wait=%d ms no_cck=%d)",
8019 drv->ifindex, freq, wait_time, no_cck);
8021 buf = os_zalloc(24 + data_len);
8022 if (buf == NULL)
8023 return ret;
8024 os_memcpy(buf + 24, data, data_len);
8025 hdr = (struct ieee80211_hdr *) buf;
8026 hdr->frame_control =
8027 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
8028 os_memcpy(hdr->addr1, dst, ETH_ALEN);
8029 os_memcpy(hdr->addr2, src, ETH_ALEN);
8030 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
8032 if (is_ap_interface(drv->nlmode))
8033 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf,
8034 24 + data_len,
8035 0, freq, no_cck, 1,
8036 wait_time);
8037 else
8038 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
8039 24 + data_len,
8040 &drv->send_action_cookie,
8041 no_cck, 0, 1);
8043 os_free(buf);
8044 return ret;
8045 }
8048 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
8049 {
8050 struct i802_bss *bss = priv;
8051 struct wpa_driver_nl80211_data *drv = bss->drv;
8052 struct nl_msg *msg;
8053 int ret;
8055 msg = nlmsg_alloc();
8056 if (!msg)
8057 return;
8059 nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
8061 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8062 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
8064 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8065 msg = NULL;
8066 if (ret)
8067 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
8068 "(%s)", ret, strerror(-ret));
8070 nla_put_failure:
8071 nlmsg_free(msg);
8072 }
8075 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
8076 unsigned int duration)
8077 {
8078 struct i802_bss *bss = priv;
8079 struct wpa_driver_nl80211_data *drv = bss->drv;
8080 struct nl_msg *msg;
8081 int ret;
8082 u64 cookie;
8084 msg = nlmsg_alloc();
8085 if (!msg)
8086 return -1;
8088 nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
8090 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8091 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8092 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
8094 cookie = 0;
8095 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8096 msg = NULL;
8097 if (ret == 0) {
8098 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
8099 "0x%llx for freq=%u MHz duration=%u",
8100 (long long unsigned int) cookie, freq, duration);
8101 drv->remain_on_chan_cookie = cookie;
8102 drv->pending_remain_on_chan = 1;
8103 return 0;
8104 }
8105 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
8106 "(freq=%d duration=%u): %d (%s)",
8107 freq, duration, ret, strerror(-ret));
8108 nla_put_failure:
8109 nlmsg_free(msg);
8110 return -1;
8111 }
8114 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
8115 {
8116 struct i802_bss *bss = priv;
8117 struct wpa_driver_nl80211_data *drv = bss->drv;
8118 struct nl_msg *msg;
8119 int ret;
8121 if (!drv->pending_remain_on_chan) {
8122 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
8123 "to cancel");
8124 return -1;
8125 }
8127 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
8128 "0x%llx",
8129 (long long unsigned int) drv->remain_on_chan_cookie);
8131 msg = nlmsg_alloc();
8132 if (!msg)
8133 return -1;
8135 nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
8137 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8138 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
8140 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8141 msg = NULL;
8142 if (ret == 0)
8143 return 0;
8144 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
8145 "%d (%s)", ret, strerror(-ret));
8146 nla_put_failure:
8147 nlmsg_free(msg);
8148 return -1;
8149 }
8152 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
8153 {
8154 struct i802_bss *bss = priv;
8155 struct wpa_driver_nl80211_data *drv = bss->drv;
8157 if (!report) {
8158 if (bss->nl_preq && drv->device_ap_sme &&
8159 is_ap_interface(drv->nlmode)) {
8160 /*
8161 * Do not disable Probe Request reporting that was
8162 * enabled in nl80211_setup_ap().
8163 */
8164 wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
8165 "Probe Request reporting nl_preq=%p while "
8166 "in AP mode", bss->nl_preq);
8167 } else if (bss->nl_preq) {
8168 wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
8169 "reporting nl_preq=%p", bss->nl_preq);
8170 eloop_unregister_read_sock(
8171 nl_socket_get_fd(bss->nl_preq));
8172 nl_destroy_handles(&bss->nl_preq);
8173 }
8174 return 0;
8175 }
8177 if (bss->nl_preq) {
8178 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
8179 "already on! nl_preq=%p", bss->nl_preq);
8180 return 0;
8181 }
8183 bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
8184 if (bss->nl_preq == NULL)
8185 return -1;
8186 wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
8187 "reporting nl_preq=%p", bss->nl_preq);
8189 if (nl80211_register_frame(bss, bss->nl_preq,
8190 (WLAN_FC_TYPE_MGMT << 2) |
8191 (WLAN_FC_STYPE_PROBE_REQ << 4),
8192 NULL, 0) < 0)
8193 goto out_err;
8195 eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq),
8196 wpa_driver_nl80211_event_receive, bss->nl_cb,
8197 bss->nl_preq);
8199 return 0;
8201 out_err:
8202 nl_destroy_handles(&bss->nl_preq);
8203 return -1;
8204 }
8207 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
8208 int ifindex, int disabled)
8209 {
8210 struct nl_msg *msg;
8211 struct nlattr *bands, *band;
8212 int ret;
8214 msg = nlmsg_alloc();
8215 if (!msg)
8216 return -1;
8218 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
8219 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
8221 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
8222 if (!bands)
8223 goto nla_put_failure;
8225 /*
8226 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
8227 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
8228 * rates. All 5 GHz rates are left enabled.
8229 */
8230 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
8231 if (!band)
8232 goto nla_put_failure;
8233 if (disabled) {
8234 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
8235 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
8236 }
8237 nla_nest_end(msg, band);
8239 nla_nest_end(msg, bands);
8241 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8242 msg = NULL;
8243 if (ret) {
8244 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
8245 "(%s)", ret, strerror(-ret));
8246 }
8248 return ret;
8250 nla_put_failure:
8251 nlmsg_free(msg);
8252 return -1;
8253 }
8256 static int wpa_driver_nl80211_deinit_ap(void *priv)
8257 {
8258 struct i802_bss *bss = priv;
8259 struct wpa_driver_nl80211_data *drv = bss->drv;
8260 if (!is_ap_interface(drv->nlmode))
8261 return -1;
8262 wpa_driver_nl80211_del_beacon(drv);
8263 return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8264 }
8267 static void wpa_driver_nl80211_resume(void *priv)
8268 {
8269 struct i802_bss *bss = priv;
8270 struct wpa_driver_nl80211_data *drv = bss->drv;
8271 if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
8272 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
8273 "resume event");
8274 }
8275 }
8278 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
8279 const u8 *ies, size_t ies_len)
8280 {
8281 struct i802_bss *bss = priv;
8282 struct wpa_driver_nl80211_data *drv = bss->drv;
8283 int ret;
8284 u8 *data, *pos;
8285 size_t data_len;
8286 const u8 *own_addr = bss->addr;
8288 if (action != 1) {
8289 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
8290 "action %d", action);
8291 return -1;
8292 }
8294 /*
8295 * Action frame payload:
8296 * Category[1] = 6 (Fast BSS Transition)
8297 * Action[1] = 1 (Fast BSS Transition Request)
8298 * STA Address
8299 * Target AP Address
8300 * FT IEs
8301 */
8303 data_len = 2 + 2 * ETH_ALEN + ies_len;
8304 data = os_malloc(data_len);
8305 if (data == NULL)
8306 return -1;
8307 pos = data;
8308 *pos++ = 0x06; /* FT Action category */
8309 *pos++ = action;
8310 os_memcpy(pos, own_addr, ETH_ALEN);
8311 pos += ETH_ALEN;
8312 os_memcpy(pos, target_ap, ETH_ALEN);
8313 pos += ETH_ALEN;
8314 os_memcpy(pos, ies, ies_len);
8316 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
8317 drv->bssid, own_addr, drv->bssid,
8318 data, data_len, 0);
8319 os_free(data);
8321 return ret;
8322 }
8325 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
8326 {
8327 struct i802_bss *bss = priv;
8328 struct wpa_driver_nl80211_data *drv = bss->drv;
8329 struct nl_msg *msg, *cqm = NULL;
8331 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
8332 "hysteresis=%d", threshold, hysteresis);
8334 msg = nlmsg_alloc();
8335 if (!msg)
8336 return -1;
8338 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
8340 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8342 cqm = nlmsg_alloc();
8343 if (cqm == NULL)
8344 return -1;
8346 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
8347 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
8348 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
8350 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
8351 return 0;
8352 msg = NULL;
8354 nla_put_failure:
8355 nlmsg_free(cqm);
8356 nlmsg_free(msg);
8357 return -1;
8358 }
8361 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
8362 {
8363 struct i802_bss *bss = priv;
8364 struct wpa_driver_nl80211_data *drv = bss->drv;
8365 int res;
8367 os_memset(si, 0, sizeof(*si));
8368 res = nl80211_get_link_signal(drv, si);
8369 if (res != 0)
8370 return res;
8372 return nl80211_get_link_noise(drv, si);
8373 }
8376 static int wpa_driver_nl80211_shared_freq(void *priv)
8377 {
8378 struct i802_bss *bss = priv;
8379 struct wpa_driver_nl80211_data *drv = bss->drv;
8380 struct wpa_driver_nl80211_data *driver;
8381 int freq = 0;
8383 /*
8384 * If the same PHY is in connected state with some other interface,
8385 * then retrieve the assoc freq.
8386 */
8387 wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
8388 drv->phyname);
8390 dl_list_for_each(driver, &drv->global->interfaces,
8391 struct wpa_driver_nl80211_data, list) {
8392 if (drv == driver ||
8393 os_strcmp(drv->phyname, driver->phyname) != 0 ||
8394 !driver->associated)
8395 continue;
8397 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
8398 MACSTR,
8399 driver->phyname, driver->first_bss.ifname,
8400 MAC2STR(driver->first_bss.addr));
8401 freq = nl80211_get_assoc_freq(driver);
8402 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
8403 drv->phyname, freq);
8404 }
8406 if (!freq)
8407 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
8408 "PHY (%s) in associated state", drv->phyname);
8410 return freq;
8411 }
8414 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
8415 int encrypt)
8416 {
8417 struct i802_bss *bss = priv;
8418 return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
8419 0, 0, 0, 0);
8420 }
8423 static int nl80211_set_param(void *priv, const char *param)
8424 {
8425 wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
8426 if (param == NULL)
8427 return 0;
8429 #ifdef CONFIG_P2P
8430 if (os_strstr(param, "use_p2p_group_interface=1")) {
8431 struct i802_bss *bss = priv;
8432 struct wpa_driver_nl80211_data *drv = bss->drv;
8434 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
8435 "interface");
8436 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
8437 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
8438 }
8439 #endif /* CONFIG_P2P */
8441 return 0;
8442 }
8445 static void * nl80211_global_init(void)
8446 {
8447 struct nl80211_global *global;
8448 struct netlink_config *cfg;
8450 global = os_zalloc(sizeof(*global));
8451 if (global == NULL)
8452 return NULL;
8453 global->ioctl_sock = -1;
8454 dl_list_init(&global->interfaces);
8455 global->if_add_ifindex = -1;
8457 cfg = os_zalloc(sizeof(*cfg));
8458 if (cfg == NULL)
8459 goto err;
8461 cfg->ctx = global;
8462 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
8463 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
8464 global->netlink = netlink_init(cfg);
8465 if (global->netlink == NULL) {
8466 os_free(cfg);
8467 goto err;
8468 }
8470 if (wpa_driver_nl80211_init_nl_global(global) < 0)
8471 goto err;
8473 global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
8474 if (global->ioctl_sock < 0) {
8475 perror("socket(PF_INET,SOCK_DGRAM)");
8476 goto err;
8477 }
8479 return global;
8481 err:
8482 nl80211_global_deinit(global);
8483 return NULL;
8484 }
8487 static void nl80211_global_deinit(void *priv)
8488 {
8489 struct nl80211_global *global = priv;
8490 if (global == NULL)
8491 return;
8492 if (!dl_list_empty(&global->interfaces)) {
8493 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
8494 "nl80211_global_deinit",
8495 dl_list_len(&global->interfaces));
8496 }
8498 if (global->netlink)
8499 netlink_deinit(global->netlink);
8501 nl_destroy_handles(&global->nl);
8503 if (global->nl_event) {
8504 eloop_unregister_read_sock(
8505 nl_socket_get_fd(global->nl_event));
8506 nl_destroy_handles(&global->nl_event);
8507 }
8509 nl_cb_put(global->nl_cb);
8511 if (global->ioctl_sock >= 0)
8512 close(global->ioctl_sock);
8514 os_free(global);
8515 }
8518 static const char * nl80211_get_radio_name(void *priv)
8519 {
8520 struct i802_bss *bss = priv;
8521 struct wpa_driver_nl80211_data *drv = bss->drv;
8522 return drv->phyname;
8523 }
8526 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
8527 const u8 *pmkid)
8528 {
8529 struct nl_msg *msg;
8531 msg = nlmsg_alloc();
8532 if (!msg)
8533 return -ENOMEM;
8535 nl80211_cmd(bss->drv, msg, 0, cmd);
8537 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8538 if (pmkid)
8539 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
8540 if (bssid)
8541 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
8543 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8544 nla_put_failure:
8545 nlmsg_free(msg);
8546 return -ENOBUFS;
8547 }
8550 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8551 {
8552 struct i802_bss *bss = priv;
8553 wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
8554 return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
8555 }
8558 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8559 {
8560 struct i802_bss *bss = priv;
8561 wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
8562 MAC2STR(bssid));
8563 return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
8564 }
8567 static int nl80211_flush_pmkid(void *priv)
8568 {
8569 struct i802_bss *bss = priv;
8570 wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
8571 return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
8572 }
8575 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
8576 const u8 *replay_ctr)
8577 {
8578 struct i802_bss *bss = priv;
8579 struct wpa_driver_nl80211_data *drv = bss->drv;
8580 struct nlattr *replay_nested;
8581 struct nl_msg *msg;
8583 msg = nlmsg_alloc();
8584 if (!msg)
8585 return;
8587 nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8589 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8591 replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8592 if (!replay_nested)
8593 goto nla_put_failure;
8595 NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
8596 NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
8597 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
8598 replay_ctr);
8600 nla_nest_end(msg, replay_nested);
8602 send_and_recv_msgs(drv, msg, NULL, NULL);
8603 return;
8604 nla_put_failure:
8605 nlmsg_free(msg);
8606 }
8609 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
8610 const u8 *addr, int qos)
8611 {
8612 /* send data frame to poll STA and check whether
8613 * this frame is ACKed */
8614 struct {
8615 struct ieee80211_hdr hdr;
8616 u16 qos_ctl;
8617 } STRUCT_PACKED nulldata;
8618 size_t size;
8620 /* Send data frame to poll STA and check whether this frame is ACKed */
8622 os_memset(&nulldata, 0, sizeof(nulldata));
8624 if (qos) {
8625 nulldata.hdr.frame_control =
8626 IEEE80211_FC(WLAN_FC_TYPE_DATA,
8627 WLAN_FC_STYPE_QOS_NULL);
8628 size = sizeof(nulldata);
8629 } else {
8630 nulldata.hdr.frame_control =
8631 IEEE80211_FC(WLAN_FC_TYPE_DATA,
8632 WLAN_FC_STYPE_NULLFUNC);
8633 size = sizeof(struct ieee80211_hdr);
8634 }
8636 nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
8637 os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8638 os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8639 os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8641 if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0)
8642 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
8643 "send poll frame");
8644 }
8646 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
8647 int qos)
8648 {
8649 struct i802_bss *bss = priv;
8650 struct wpa_driver_nl80211_data *drv = bss->drv;
8651 struct nl_msg *msg;
8653 if (!drv->poll_command_supported) {
8654 nl80211_send_null_frame(bss, own_addr, addr, qos);
8655 return;
8656 }
8658 msg = nlmsg_alloc();
8659 if (!msg)
8660 return;
8662 nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
8664 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8665 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8667 send_and_recv_msgs(drv, msg, NULL, NULL);
8668 return;
8669 nla_put_failure:
8670 nlmsg_free(msg);
8671 }
8674 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
8675 {
8676 struct nl_msg *msg;
8678 msg = nlmsg_alloc();
8679 if (!msg)
8680 return -ENOMEM;
8682 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
8683 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8684 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
8685 enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
8686 return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8687 nla_put_failure:
8688 nlmsg_free(msg);
8689 return -ENOBUFS;
8690 }
8693 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
8694 int ctwindow)
8695 {
8696 struct i802_bss *bss = priv;
8698 wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
8699 "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
8701 if (opp_ps != -1 || ctwindow != -1)
8702 return -1; /* Not yet supported */
8704 if (legacy_ps == -1)
8705 return 0;
8706 if (legacy_ps != 0 && legacy_ps != 1)
8707 return -1; /* Not yet supported */
8709 return nl80211_set_power_save(bss, legacy_ps);
8710 }
8713 #ifdef CONFIG_TDLS
8715 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
8716 u8 dialog_token, u16 status_code,
8717 const u8 *buf, size_t len)
8718 {
8719 struct i802_bss *bss = priv;
8720 struct wpa_driver_nl80211_data *drv = bss->drv;
8721 struct nl_msg *msg;
8723 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8724 return -EOPNOTSUPP;
8726 if (!dst)
8727 return -EINVAL;
8729 msg = nlmsg_alloc();
8730 if (!msg)
8731 return -ENOMEM;
8733 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
8734 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8735 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
8736 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
8737 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
8738 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
8739 NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
8741 return send_and_recv_msgs(drv, msg, NULL, NULL);
8743 nla_put_failure:
8744 nlmsg_free(msg);
8745 return -ENOBUFS;
8746 }
8749 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
8750 {
8751 struct i802_bss *bss = priv;
8752 struct wpa_driver_nl80211_data *drv = bss->drv;
8753 struct nl_msg *msg;
8754 enum nl80211_tdls_operation nl80211_oper;
8756 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8757 return -EOPNOTSUPP;
8759 switch (oper) {
8760 case TDLS_DISCOVERY_REQ:
8761 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
8762 break;
8763 case TDLS_SETUP:
8764 nl80211_oper = NL80211_TDLS_SETUP;
8765 break;
8766 case TDLS_TEARDOWN:
8767 nl80211_oper = NL80211_TDLS_TEARDOWN;
8768 break;
8769 case TDLS_ENABLE_LINK:
8770 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8771 break;
8772 case TDLS_DISABLE_LINK:
8773 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8774 break;
8775 case TDLS_ENABLE:
8776 return 0;
8777 case TDLS_DISABLE:
8778 return 0;
8779 default:
8780 return -EINVAL;
8781 }
8783 msg = nlmsg_alloc();
8784 if (!msg)
8785 return -ENOMEM;
8787 nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8788 NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8789 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8790 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8792 return send_and_recv_msgs(drv, msg, NULL, NULL);
8794 nla_put_failure:
8795 nlmsg_free(msg);
8796 return -ENOBUFS;
8797 }
8799 #endif /* CONFIG TDLS */
8802 #ifdef ANDROID
8804 typedef struct android_wifi_priv_cmd {
8805 char *buf;
8806 int used_len;
8807 int total_len;
8808 } android_wifi_priv_cmd;
8810 static int drv_errors = 0;
8812 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
8813 {
8814 drv_errors++;
8815 if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
8816 drv_errors = 0;
8817 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
8818 }
8819 }
8822 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
8823 {
8824 struct wpa_driver_nl80211_data *drv = bss->drv;
8825 struct ifreq ifr;
8826 android_wifi_priv_cmd priv_cmd;
8827 char buf[MAX_DRV_CMD_SIZE];
8828 int ret;
8830 os_memset(&ifr, 0, sizeof(ifr));
8831 os_memset(&priv_cmd, 0, sizeof(priv_cmd));
8832 os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
8834 os_memset(buf, 0, sizeof(buf));
8835 os_strlcpy(buf, cmd, sizeof(buf));
8837 priv_cmd.buf = buf;
8838 priv_cmd.used_len = sizeof(buf);
8839 priv_cmd.total_len = sizeof(buf);
8840 ifr.ifr_data = &priv_cmd;
8842 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
8843 if (ret < 0) {
8844 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
8845 __func__);
8846 wpa_driver_send_hang_msg(drv);
8847 return ret;
8848 }
8850 drv_errors = 0;
8851 return 0;
8852 }
8855 static int android_pno_start(struct i802_bss *bss,
8856 struct wpa_driver_scan_params *params)
8857 {
8858 struct wpa_driver_nl80211_data *drv = bss->drv;
8859 struct ifreq ifr;
8860 android_wifi_priv_cmd priv_cmd;
8861 int ret = 0, i = 0, bp;
8862 char buf[WEXT_PNO_MAX_COMMAND_SIZE];
8864 bp = WEXT_PNOSETUP_HEADER_SIZE;
8865 os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
8866 buf[bp++] = WEXT_PNO_TLV_PREFIX;
8867 buf[bp++] = WEXT_PNO_TLV_VERSION;
8868 buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
8869 buf[bp++] = WEXT_PNO_TLV_RESERVED;
8871 while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
8872 /* Check that there is enough space needed for 1 more SSID, the
8873 * other sections and null termination */
8874 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
8875 WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
8876 break;
8877 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
8878 params->ssids[i].ssid,
8879 params->ssids[i].ssid_len);
8880 buf[bp++] = WEXT_PNO_SSID_SECTION;
8881 buf[bp++] = params->ssids[i].ssid_len;
8882 os_memcpy(&buf[bp], params->ssids[i].ssid,
8883 params->ssids[i].ssid_len);
8884 bp += params->ssids[i].ssid_len;
8885 i++;
8886 }
8888 buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
8889 os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
8890 WEXT_PNO_SCAN_INTERVAL);
8891 bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
8893 buf[bp++] = WEXT_PNO_REPEAT_SECTION;
8894 os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
8895 WEXT_PNO_REPEAT);
8896 bp += WEXT_PNO_REPEAT_LENGTH;
8898 buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
8899 os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
8900 WEXT_PNO_MAX_REPEAT);
8901 bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
8903 memset(&ifr, 0, sizeof(ifr));
8904 memset(&priv_cmd, 0, sizeof(priv_cmd));
8905 os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
8907 priv_cmd.buf = buf;
8908 priv_cmd.used_len = bp;
8909 priv_cmd.total_len = bp;
8910 ifr.ifr_data = &priv_cmd;
8912 ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
8914 if (ret < 0) {
8915 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
8916 ret);
8917 wpa_driver_send_hang_msg(drv);
8918 return ret;
8919 }
8921 drv_errors = 0;
8923 return android_priv_cmd(bss, "PNOFORCE 1");
8924 }
8927 static int android_pno_stop(struct i802_bss *bss)
8928 {
8929 return android_priv_cmd(bss, "PNOFORCE 0");
8930 }
8933 static int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf,
8934 size_t buf_len)
8935 {
8936 struct i802_bss *bss = priv;
8937 struct wpa_driver_nl80211_data *drv = bss->drv;
8938 int ret = 0;
8940 if (os_strcasecmp(cmd, "STOP") == 0) {
8941 linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
8942 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STOPPED");
8943 } else if (os_strcasecmp(cmd, "START") == 0) {
8944 linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1);
8945 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "STARTED");
8946 } else if (os_strcasecmp(cmd, "MACADDR") == 0) {
8947 u8 macaddr[ETH_ALEN] = {};
8949 ret = linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
8950 macaddr);
8951 if (!ret)
8952 ret = os_snprintf(buf, buf_len,
8953 "Macaddr = " MACSTR "\n",
8954 MAC2STR(macaddr));
8955 } else if (os_strcasecmp(cmd, "RELOAD") == 0) {
8956 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
8957 } else {
8958 wpa_printf(MSG_ERROR, "Unsupported command: %s", cmd);
8959 ret = -1;
8960 }
8962 return ret;
8963 }
8965 #endif /* ANDROID */
8968 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
8969 .name = "nl80211",
8970 .desc = "Linux nl80211/cfg80211",
8971 .get_bssid = wpa_driver_nl80211_get_bssid,
8972 .get_ssid = wpa_driver_nl80211_get_ssid,
8973 .set_key = wpa_driver_nl80211_set_key,
8974 .scan2 = wpa_driver_nl80211_scan,
8975 .sched_scan = wpa_driver_nl80211_sched_scan,
8976 .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
8977 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
8978 .deauthenticate = wpa_driver_nl80211_deauthenticate,
8979 .disassociate = wpa_driver_nl80211_disassociate,
8980 .authenticate = wpa_driver_nl80211_authenticate,
8981 .associate = wpa_driver_nl80211_associate,
8982 .global_init = nl80211_global_init,
8983 .global_deinit = nl80211_global_deinit,
8984 .init2 = wpa_driver_nl80211_init,
8985 .deinit = wpa_driver_nl80211_deinit,
8986 .get_capa = wpa_driver_nl80211_get_capa,
8987 .set_operstate = wpa_driver_nl80211_set_operstate,
8988 .set_supp_port = wpa_driver_nl80211_set_supp_port,
8989 .set_country = wpa_driver_nl80211_set_country,
8990 .set_ap = wpa_driver_nl80211_set_ap,
8991 .if_add = wpa_driver_nl80211_if_add,
8992 .if_remove = wpa_driver_nl80211_if_remove,
8993 .send_mlme = wpa_driver_nl80211_send_mlme,
8994 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
8995 .sta_add = wpa_driver_nl80211_sta_add,
8996 .sta_remove = wpa_driver_nl80211_sta_remove,
8997 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
8998 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
8999 #ifdef HOSTAPD
9000 .hapd_init = i802_init,
9001 .hapd_deinit = i802_deinit,
9002 .set_wds_sta = i802_set_wds_sta,
9003 #endif /* HOSTAPD */
9004 #if defined(HOSTAPD) || defined(CONFIG_AP)
9005 .get_seqnum = i802_get_seqnum,
9006 .flush = i802_flush,
9007 .read_sta_data = i802_read_sta_data,
9008 .get_inact_sec = i802_get_inact_sec,
9009 .sta_clear_stats = i802_sta_clear_stats,
9010 .set_rts = i802_set_rts,
9011 .set_frag = i802_set_frag,
9012 .set_tx_queue_params = i802_set_tx_queue_params,
9013 .set_sta_vlan = i802_set_sta_vlan,
9014 .sta_deauth = i802_sta_deauth,
9015 .sta_disassoc = i802_sta_disassoc,
9016 #endif /* HOSTAPD || CONFIG_AP */
9017 .set_freq = i802_set_freq,
9018 .send_action = wpa_driver_nl80211_send_action,
9019 .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9020 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9021 .cancel_remain_on_channel =
9022 wpa_driver_nl80211_cancel_remain_on_channel,
9023 .probe_req_report = wpa_driver_nl80211_probe_req_report,
9024 .deinit_ap = wpa_driver_nl80211_deinit_ap,
9025 .resume = wpa_driver_nl80211_resume,
9026 .send_ft_action = nl80211_send_ft_action,
9027 .signal_monitor = nl80211_signal_monitor,
9028 .signal_poll = nl80211_signal_poll,
9029 .send_frame = nl80211_send_frame,
9030 .shared_freq = wpa_driver_nl80211_shared_freq,
9031 .set_param = nl80211_set_param,
9032 .get_radio_name = nl80211_get_radio_name,
9033 .add_pmkid = nl80211_add_pmkid,
9034 .remove_pmkid = nl80211_remove_pmkid,
9035 .flush_pmkid = nl80211_flush_pmkid,
9036 .set_rekey_info = nl80211_set_rekey_info,
9037 .poll_client = nl80211_poll_client,
9038 .set_p2p_powersave = nl80211_set_p2p_powersave,
9039 #ifdef CONFIG_TDLS
9040 .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9041 .tdls_oper = nl80211_tdls_oper,
9042 #endif /* CONFIG_TDLS */
9043 #ifdef ANDROID
9044 .driver_cmd = wpa_driver_nl80211_driver_cmd,
9045 #endif /* ANDROID */
9046 };