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