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Commit | Line | Data |
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3f5285e8 JM |
1 | /* |
2 | * WPA Supplicant - driver interaction with Linux nl80211/cfg80211 | |
3 | * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * Alternatively, this software may be distributed under the terms of BSD | |
10 | * license. | |
11 | * | |
12 | * See README and COPYING for more details. | |
13 | */ | |
14 | ||
15 | #include "includes.h" | |
16 | #include <sys/ioctl.h> | |
17 | #include <net/if_arp.h> | |
18 | #include <netlink/genl/genl.h> | |
19 | #include <netlink/genl/family.h> | |
20 | #include <netlink/genl/ctrl.h> | |
7e45830a | 21 | #include "nl80211_copy.h" |
3f5285e8 | 22 | #include "wireless_copy.h" |
625f587b | 23 | |
3f5285e8 JM |
24 | #include "common.h" |
25 | #include "driver.h" | |
26 | #include "eloop.h" | |
27 | #include "ieee802_11_defs.h" | |
28 | ||
29 | #ifndef IFF_LOWER_UP | |
30 | #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ | |
31 | #endif | |
32 | #ifndef IFF_DORMANT | |
33 | #define IFF_DORMANT 0x20000 /* driver signals dormant */ | |
34 | #endif | |
35 | ||
36 | #ifndef IF_OPER_DORMANT | |
37 | #define IF_OPER_DORMANT 5 | |
38 | #endif | |
39 | #ifndef IF_OPER_UP | |
40 | #define IF_OPER_UP 6 | |
41 | #endif | |
42 | ||
43 | ||
c2a04078 JM |
44 | #ifndef NO_WEXT_COMPAT |
45 | /* | |
46 | * Fall back to WEXT association, if the kernel does not support nl80211 MLME | |
47 | * commands. This is temporary backwards compatibility version that will be | |
48 | * removed at some point. | |
49 | */ | |
50 | #define WEXT_COMPAT | |
51 | #endif /* NO_WEXT_COMPAT */ | |
52 | ||
53 | ||
3f5285e8 JM |
54 | struct wpa_driver_nl80211_data { |
55 | void *ctx; | |
97865538 | 56 | int wext_event_sock; |
3f5285e8 JM |
57 | int ioctl_sock; |
58 | char ifname[IFNAMSIZ + 1]; | |
59 | int ifindex; | |
7524cfb1 | 60 | int if_removed; |
c2a04078 JM |
61 | struct wpa_driver_capa capa; |
62 | int has_capability; | |
63 | int we_version_compiled; | |
64 | ||
65 | #ifdef WEXT_COMPAT | |
3f5285e8 JM |
66 | u8 *assoc_req_ies; |
67 | size_t assoc_req_ies_len; | |
68 | u8 *assoc_resp_ies; | |
69 | size_t assoc_resp_ies_len; | |
3f5285e8 JM |
70 | |
71 | /* for set_auth_alg fallback */ | |
72 | int use_crypt; | |
73 | int auth_alg_fallback; | |
c2a04078 | 74 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
75 | |
76 | int operstate; | |
77 | ||
78 | char mlmedev[IFNAMSIZ + 1]; | |
79 | ||
80 | int scan_complete_events; | |
81 | ||
82 | struct nl_handle *nl_handle; | |
83 | struct nl_cache *nl_cache; | |
84 | struct nl_cb *nl_cb; | |
85 | struct genl_family *nl80211; | |
1c873584 | 86 | |
c2a04078 JM |
87 | u8 bssid[ETH_ALEN]; |
88 | int associated; | |
fd05d64e JM |
89 | u8 ssid[32]; |
90 | size_t ssid_len; | |
3f5285e8 JM |
91 | }; |
92 | ||
93 | ||
94 | static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, | |
95 | void *timeout_ctx); | |
36b15723 JM |
96 | static int wpa_driver_nl80211_set_mode(struct wpa_driver_nl80211_data *drv, |
97 | int mode); | |
f555b6de | 98 | #ifdef WEXT_COMPAT |
3f5285e8 | 99 | static int wpa_driver_nl80211_flush_pmkid(void *priv); |
f555b6de | 100 | #endif /* WEXT_COMPAT */ |
3f5285e8 | 101 | static int wpa_driver_nl80211_get_range(void *priv); |
362f781e | 102 | static int |
7524cfb1 JM |
103 | wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv); |
104 | ||
3f5285e8 | 105 | |
6241fcb1 JM |
106 | /* nl80211 code */ |
107 | static int ack_handler(struct nl_msg *msg, void *arg) | |
108 | { | |
109 | int *err = arg; | |
110 | *err = 0; | |
111 | return NL_STOP; | |
112 | } | |
113 | ||
114 | static int finish_handler(struct nl_msg *msg, void *arg) | |
115 | { | |
8e8df255 JM |
116 | int *ret = arg; |
117 | *ret = 0; | |
6241fcb1 JM |
118 | return NL_SKIP; |
119 | } | |
120 | ||
121 | static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, | |
122 | void *arg) | |
123 | { | |
124 | int *ret = arg; | |
125 | *ret = err->error; | |
126 | return NL_SKIP; | |
127 | } | |
128 | ||
129 | static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, | |
130 | struct nl_msg *msg, | |
131 | int (*valid_handler)(struct nl_msg *, void *), | |
132 | void *valid_data) | |
133 | { | |
134 | struct nl_cb *cb; | |
135 | int err = -ENOMEM; | |
136 | ||
137 | cb = nl_cb_clone(drv->nl_cb); | |
138 | if (!cb) | |
139 | goto out; | |
140 | ||
141 | err = nl_send_auto_complete(drv->nl_handle, msg); | |
142 | if (err < 0) | |
143 | goto out; | |
144 | ||
145 | err = 1; | |
146 | ||
147 | nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); | |
8e8df255 | 148 | nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); |
6241fcb1 JM |
149 | nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); |
150 | ||
151 | if (valid_handler) | |
152 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, | |
153 | valid_handler, valid_data); | |
154 | ||
155 | while (err > 0) | |
156 | nl_recvmsgs(drv->nl_handle, cb); | |
157 | out: | |
158 | nl_cb_put(cb); | |
159 | nlmsg_free(msg); | |
160 | return err; | |
161 | } | |
162 | ||
163 | ||
97865538 JM |
164 | struct family_data { |
165 | const char *group; | |
166 | int id; | |
167 | }; | |
168 | ||
169 | ||
170 | static int family_handler(struct nl_msg *msg, void *arg) | |
171 | { | |
172 | struct family_data *res = arg; | |
173 | struct nlattr *tb[CTRL_ATTR_MAX + 1]; | |
174 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
175 | struct nlattr *mcgrp; | |
176 | int i; | |
177 | ||
178 | nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
179 | genlmsg_attrlen(gnlh, 0), NULL); | |
180 | if (!tb[CTRL_ATTR_MCAST_GROUPS]) | |
181 | return NL_SKIP; | |
182 | ||
183 | nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { | |
184 | struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; | |
185 | nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), | |
186 | nla_len(mcgrp), NULL); | |
187 | if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || | |
188 | !tb2[CTRL_ATTR_MCAST_GRP_ID] || | |
189 | os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), | |
190 | res->group, | |
191 | nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) | |
192 | continue; | |
193 | res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); | |
194 | break; | |
195 | }; | |
196 | ||
197 | return NL_SKIP; | |
198 | } | |
199 | ||
200 | ||
201 | static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv, | |
202 | const char *family, const char *group) | |
203 | { | |
204 | struct nl_msg *msg; | |
205 | int ret = -1; | |
206 | struct family_data res = { group, -ENOENT }; | |
207 | ||
208 | msg = nlmsg_alloc(); | |
209 | if (!msg) | |
210 | return -ENOMEM; | |
211 | genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"), | |
212 | 0, 0, CTRL_CMD_GETFAMILY, 0); | |
213 | NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); | |
214 | ||
215 | ret = send_and_recv_msgs(drv, msg, family_handler, &res); | |
216 | msg = NULL; | |
217 | if (ret == 0) | |
218 | ret = res.id; | |
219 | ||
220 | nla_put_failure: | |
221 | nlmsg_free(msg); | |
222 | return ret; | |
223 | } | |
224 | ||
225 | ||
3f5285e8 JM |
226 | static int wpa_driver_nl80211_send_oper_ifla( |
227 | struct wpa_driver_nl80211_data *drv, | |
228 | int linkmode, int operstate) | |
229 | { | |
230 | struct { | |
231 | struct nlmsghdr hdr; | |
232 | struct ifinfomsg ifinfo; | |
233 | char opts[16]; | |
234 | } req; | |
235 | struct rtattr *rta; | |
236 | static int nl_seq; | |
237 | ssize_t ret; | |
238 | ||
239 | os_memset(&req, 0, sizeof(req)); | |
240 | ||
241 | req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
242 | req.hdr.nlmsg_type = RTM_SETLINK; | |
243 | req.hdr.nlmsg_flags = NLM_F_REQUEST; | |
244 | req.hdr.nlmsg_seq = ++nl_seq; | |
245 | req.hdr.nlmsg_pid = 0; | |
246 | ||
247 | req.ifinfo.ifi_family = AF_UNSPEC; | |
248 | req.ifinfo.ifi_type = 0; | |
249 | req.ifinfo.ifi_index = drv->ifindex; | |
250 | req.ifinfo.ifi_flags = 0; | |
251 | req.ifinfo.ifi_change = 0; | |
252 | ||
253 | if (linkmode != -1) { | |
254 | rta = (struct rtattr *) | |
255 | ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)); | |
256 | rta->rta_type = IFLA_LINKMODE; | |
257 | rta->rta_len = RTA_LENGTH(sizeof(char)); | |
258 | *((char *) RTA_DATA(rta)) = linkmode; | |
259 | req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) + | |
260 | RTA_LENGTH(sizeof(char)); | |
261 | } | |
262 | if (operstate != -1) { | |
263 | rta = (struct rtattr *) | |
264 | ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)); | |
265 | rta->rta_type = IFLA_OPERSTATE; | |
266 | rta->rta_len = RTA_LENGTH(sizeof(char)); | |
267 | *((char *) RTA_DATA(rta)) = operstate; | |
268 | req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) + | |
269 | RTA_LENGTH(sizeof(char)); | |
270 | } | |
271 | ||
272 | wpa_printf(MSG_DEBUG, "WEXT: Operstate: linkmode=%d, operstate=%d", | |
273 | linkmode, operstate); | |
274 | ||
97865538 | 275 | ret = send(drv->wext_event_sock, &req, req.hdr.nlmsg_len, 0); |
3f5285e8 JM |
276 | if (ret < 0) { |
277 | wpa_printf(MSG_DEBUG, "WEXT: Sending operstate IFLA failed: " | |
278 | "%s (assume operstate is not supported)", | |
279 | strerror(errno)); | |
280 | } | |
281 | ||
282 | return ret < 0 ? -1 : 0; | |
283 | } | |
284 | ||
285 | ||
286 | static int wpa_driver_nl80211_set_auth_param( | |
287 | struct wpa_driver_nl80211_data *drv, int idx, u32 value) | |
288 | { | |
289 | struct iwreq iwr; | |
290 | int ret = 0; | |
291 | ||
292 | os_memset(&iwr, 0, sizeof(iwr)); | |
293 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
294 | iwr.u.param.flags = idx & IW_AUTH_INDEX; | |
295 | iwr.u.param.value = value; | |
296 | ||
297 | if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) { | |
298 | if (errno != EOPNOTSUPP) { | |
299 | wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d " | |
300 | "value 0x%x) failed: %s)", | |
301 | idx, value, strerror(errno)); | |
302 | } | |
303 | ret = errno == EOPNOTSUPP ? -2 : -1; | |
304 | } | |
305 | ||
306 | return ret; | |
307 | } | |
308 | ||
309 | ||
310 | static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) | |
311 | { | |
312 | struct wpa_driver_nl80211_data *drv = priv; | |
c2a04078 JM |
313 | #ifdef WEXT_COMPAT |
314 | if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { | |
315 | struct iwreq iwr; | |
316 | int ret = 0; | |
3f5285e8 | 317 | |
c2a04078 JM |
318 | os_memset(&iwr, 0, sizeof(iwr)); |
319 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
3f5285e8 | 320 | |
c2a04078 JM |
321 | if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) { |
322 | perror("ioctl[SIOCGIWAP]"); | |
323 | ret = -1; | |
324 | } | |
325 | os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN); | |
3f5285e8 | 326 | |
c2a04078 JM |
327 | return ret; |
328 | } | |
329 | #endif /* WEXT_COMPAT */ | |
330 | if (!drv->associated) | |
331 | return -1; | |
332 | os_memcpy(bssid, drv->bssid, ETH_ALEN); | |
333 | return 0; | |
3f5285e8 JM |
334 | } |
335 | ||
336 | ||
ed384c2c | 337 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
338 | static int wpa_driver_nl80211_set_bssid(void *priv, const u8 *bssid) |
339 | { | |
340 | struct wpa_driver_nl80211_data *drv = priv; | |
341 | struct iwreq iwr; | |
342 | int ret = 0; | |
343 | ||
344 | os_memset(&iwr, 0, sizeof(iwr)); | |
345 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
346 | iwr.u.ap_addr.sa_family = ARPHRD_ETHER; | |
347 | if (bssid) | |
348 | os_memcpy(iwr.u.ap_addr.sa_data, bssid, ETH_ALEN); | |
349 | else | |
350 | os_memset(iwr.u.ap_addr.sa_data, 0, ETH_ALEN); | |
351 | ||
352 | if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr) < 0) { | |
353 | perror("ioctl[SIOCSIWAP]"); | |
354 | ret = -1; | |
355 | } | |
356 | ||
357 | return ret; | |
358 | } | |
ed384c2c | 359 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
360 | |
361 | ||
362 | static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) | |
363 | { | |
364 | struct wpa_driver_nl80211_data *drv = priv; | |
fd05d64e JM |
365 | #ifdef WEXT_COMPAT |
366 | if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { | |
367 | struct iwreq iwr; | |
368 | int ret = 0; | |
3f5285e8 | 369 | |
fd05d64e JM |
370 | os_memset(&iwr, 0, sizeof(iwr)); |
371 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
372 | iwr.u.essid.pointer = (caddr_t) ssid; | |
373 | iwr.u.essid.length = 32; | |
3f5285e8 | 374 | |
fd05d64e JM |
375 | if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) { |
376 | perror("ioctl[SIOCGIWESSID]"); | |
377 | ret = -1; | |
378 | } else { | |
379 | ret = iwr.u.essid.length; | |
380 | if (ret > 32) | |
381 | ret = 32; | |
382 | /* | |
383 | * Some drivers include nul termination in the SSID, so | |
384 | * let's remove it here before further processing. | |
385 | * WE-21 changes this to explicitly require the length | |
386 | * _not_ to include nul termination. | |
387 | */ | |
388 | if (ret > 0 && ssid[ret - 1] == '\0' && | |
389 | drv->we_version_compiled < 21) | |
390 | ret--; | |
391 | } | |
3f5285e8 | 392 | |
fd05d64e JM |
393 | return ret; |
394 | } | |
395 | #endif /* WEXT_COMPAT */ | |
396 | if (!drv->associated) | |
397 | return -1; | |
398 | os_memcpy(ssid, drv->ssid, drv->ssid_len); | |
399 | return drv->ssid_len; | |
3f5285e8 JM |
400 | } |
401 | ||
402 | ||
af723760 | 403 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
404 | static int wpa_driver_nl80211_set_ssid(void *priv, const u8 *ssid, |
405 | size_t ssid_len) | |
406 | { | |
407 | struct wpa_driver_nl80211_data *drv = priv; | |
408 | struct iwreq iwr; | |
409 | int ret = 0; | |
410 | char buf[33]; | |
411 | ||
412 | if (ssid_len > 32) | |
413 | return -1; | |
414 | ||
415 | os_memset(&iwr, 0, sizeof(iwr)); | |
416 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
417 | /* flags: 1 = ESSID is active, 0 = not (promiscuous) */ | |
418 | iwr.u.essid.flags = (ssid_len != 0); | |
419 | os_memset(buf, 0, sizeof(buf)); | |
420 | os_memcpy(buf, ssid, ssid_len); | |
421 | iwr.u.essid.pointer = (caddr_t) buf; | |
422 | if (drv->we_version_compiled < 21) { | |
423 | /* For historic reasons, set SSID length to include one extra | |
424 | * character, C string nul termination, even though SSID is | |
425 | * really an octet string that should not be presented as a C | |
426 | * string. Some Linux drivers decrement the length by one and | |
427 | * can thus end up missing the last octet of the SSID if the | |
428 | * length is not incremented here. WE-21 changes this to | |
429 | * explicitly require the length _not_ to include nul | |
430 | * termination. */ | |
431 | if (ssid_len) | |
432 | ssid_len++; | |
433 | } | |
434 | iwr.u.essid.length = ssid_len; | |
435 | ||
436 | if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) { | |
437 | perror("ioctl[SIOCSIWESSID]"); | |
438 | ret = -1; | |
439 | } | |
440 | ||
441 | return ret; | |
442 | } | |
443 | ||
444 | ||
445 | static int wpa_driver_nl80211_set_freq(void *priv, int freq) | |
446 | { | |
447 | struct wpa_driver_nl80211_data *drv = priv; | |
448 | struct iwreq iwr; | |
449 | int ret = 0; | |
450 | ||
451 | os_memset(&iwr, 0, sizeof(iwr)); | |
452 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
453 | iwr.u.freq.m = freq * 100000; | |
454 | iwr.u.freq.e = 1; | |
455 | ||
456 | if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) { | |
457 | perror("ioctl[SIOCSIWFREQ]"); | |
458 | ret = -1; | |
459 | } | |
460 | ||
461 | return ret; | |
462 | } | |
463 | ||
464 | ||
465 | static void | |
466 | wpa_driver_nl80211_event_wireless_custom(void *ctx, char *custom) | |
467 | { | |
468 | union wpa_event_data data; | |
469 | ||
470 | wpa_printf(MSG_MSGDUMP, "WEXT: Custom wireless event: '%s'", | |
471 | custom); | |
472 | ||
473 | os_memset(&data, 0, sizeof(data)); | |
474 | /* Host AP driver */ | |
475 | if (os_strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) { | |
476 | data.michael_mic_failure.unicast = | |
477 | os_strstr(custom, " unicast ") != NULL; | |
478 | /* TODO: parse parameters(?) */ | |
479 | wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data); | |
480 | } else if (os_strncmp(custom, "ASSOCINFO(ReqIEs=", 17) == 0) { | |
481 | char *spos; | |
482 | int bytes; | |
483 | ||
484 | spos = custom + 17; | |
485 | ||
486 | bytes = strspn(spos, "0123456789abcdefABCDEF"); | |
487 | if (!bytes || (bytes & 1)) | |
488 | return; | |
489 | bytes /= 2; | |
490 | ||
491 | data.assoc_info.req_ies = os_malloc(bytes); | |
492 | if (data.assoc_info.req_ies == NULL) | |
493 | return; | |
494 | ||
495 | data.assoc_info.req_ies_len = bytes; | |
496 | hexstr2bin(spos, data.assoc_info.req_ies, bytes); | |
497 | ||
498 | spos += bytes * 2; | |
499 | ||
500 | data.assoc_info.resp_ies = NULL; | |
501 | data.assoc_info.resp_ies_len = 0; | |
502 | ||
503 | if (os_strncmp(spos, " RespIEs=", 9) == 0) { | |
504 | spos += 9; | |
505 | ||
506 | bytes = strspn(spos, "0123456789abcdefABCDEF"); | |
507 | if (!bytes || (bytes & 1)) | |
508 | goto done; | |
509 | bytes /= 2; | |
510 | ||
511 | data.assoc_info.resp_ies = os_malloc(bytes); | |
512 | if (data.assoc_info.resp_ies == NULL) | |
513 | goto done; | |
514 | ||
515 | data.assoc_info.resp_ies_len = bytes; | |
516 | hexstr2bin(spos, data.assoc_info.resp_ies, bytes); | |
517 | } | |
518 | ||
519 | wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data); | |
520 | ||
521 | done: | |
522 | os_free(data.assoc_info.resp_ies); | |
523 | os_free(data.assoc_info.req_ies); | |
524 | #ifdef CONFIG_PEERKEY | |
525 | } else if (os_strncmp(custom, "STKSTART.request=", 17) == 0) { | |
526 | if (hwaddr_aton(custom + 17, data.stkstart.peer)) { | |
527 | wpa_printf(MSG_DEBUG, "WEXT: unrecognized " | |
528 | "STKSTART.request '%s'", custom + 17); | |
529 | return; | |
530 | } | |
531 | wpa_supplicant_event(ctx, EVENT_STKSTART, &data); | |
532 | #endif /* CONFIG_PEERKEY */ | |
533 | } | |
534 | } | |
c2a04078 | 535 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
536 | |
537 | ||
538 | static int wpa_driver_nl80211_event_wireless_michaelmicfailure( | |
539 | void *ctx, const char *ev, size_t len) | |
540 | { | |
541 | const struct iw_michaelmicfailure *mic; | |
542 | union wpa_event_data data; | |
543 | ||
544 | if (len < sizeof(*mic)) | |
545 | return -1; | |
546 | ||
547 | mic = (const struct iw_michaelmicfailure *) ev; | |
548 | ||
549 | wpa_printf(MSG_DEBUG, "Michael MIC failure wireless event: " | |
550 | "flags=0x%x src_addr=" MACSTR, mic->flags, | |
551 | MAC2STR(mic->src_addr.sa_data)); | |
552 | ||
553 | os_memset(&data, 0, sizeof(data)); | |
554 | data.michael_mic_failure.unicast = !(mic->flags & IW_MICFAILURE_GROUP); | |
555 | wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
560 | ||
95f02a5d | 561 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
562 | static int wpa_driver_nl80211_event_wireless_pmkidcand( |
563 | struct wpa_driver_nl80211_data *drv, const char *ev, size_t len) | |
564 | { | |
565 | const struct iw_pmkid_cand *cand; | |
566 | union wpa_event_data data; | |
567 | const u8 *addr; | |
568 | ||
569 | if (len < sizeof(*cand)) | |
570 | return -1; | |
571 | ||
572 | cand = (const struct iw_pmkid_cand *) ev; | |
573 | addr = (const u8 *) cand->bssid.sa_data; | |
574 | ||
575 | wpa_printf(MSG_DEBUG, "PMKID candidate wireless event: " | |
576 | "flags=0x%x index=%d bssid=" MACSTR, cand->flags, | |
577 | cand->index, MAC2STR(addr)); | |
578 | ||
579 | os_memset(&data, 0, sizeof(data)); | |
580 | os_memcpy(data.pmkid_candidate.bssid, addr, ETH_ALEN); | |
581 | data.pmkid_candidate.index = cand->index; | |
582 | data.pmkid_candidate.preauth = cand->flags & IW_PMKID_CAND_PREAUTH; | |
583 | wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | ||
589 | static int wpa_driver_nl80211_event_wireless_assocreqie( | |
590 | struct wpa_driver_nl80211_data *drv, const char *ev, int len) | |
591 | { | |
592 | if (len < 0) | |
593 | return -1; | |
594 | ||
595 | wpa_hexdump(MSG_DEBUG, "AssocReq IE wireless event", (const u8 *) ev, | |
596 | len); | |
597 | os_free(drv->assoc_req_ies); | |
598 | drv->assoc_req_ies = os_malloc(len); | |
599 | if (drv->assoc_req_ies == NULL) { | |
600 | drv->assoc_req_ies_len = 0; | |
601 | return -1; | |
602 | } | |
603 | os_memcpy(drv->assoc_req_ies, ev, len); | |
604 | drv->assoc_req_ies_len = len; | |
605 | ||
606 | return 0; | |
607 | } | |
608 | ||
609 | ||
610 | static int wpa_driver_nl80211_event_wireless_assocrespie( | |
611 | struct wpa_driver_nl80211_data *drv, const char *ev, int len) | |
612 | { | |
613 | if (len < 0) | |
614 | return -1; | |
615 | ||
616 | wpa_hexdump(MSG_DEBUG, "AssocResp IE wireless event", (const u8 *) ev, | |
617 | len); | |
618 | os_free(drv->assoc_resp_ies); | |
619 | drv->assoc_resp_ies = os_malloc(len); | |
620 | if (drv->assoc_resp_ies == NULL) { | |
621 | drv->assoc_resp_ies_len = 0; | |
622 | return -1; | |
623 | } | |
624 | os_memcpy(drv->assoc_resp_ies, ev, len); | |
625 | drv->assoc_resp_ies_len = len; | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | ||
631 | static void wpa_driver_nl80211_event_assoc_ies(struct wpa_driver_nl80211_data *drv) | |
632 | { | |
633 | union wpa_event_data data; | |
634 | ||
635 | if (drv->assoc_req_ies == NULL && drv->assoc_resp_ies == NULL) | |
636 | return; | |
637 | ||
638 | os_memset(&data, 0, sizeof(data)); | |
639 | if (drv->assoc_req_ies) { | |
640 | data.assoc_info.req_ies = drv->assoc_req_ies; | |
641 | drv->assoc_req_ies = NULL; | |
642 | data.assoc_info.req_ies_len = drv->assoc_req_ies_len; | |
643 | } | |
644 | if (drv->assoc_resp_ies) { | |
645 | data.assoc_info.resp_ies = drv->assoc_resp_ies; | |
646 | drv->assoc_resp_ies = NULL; | |
647 | data.assoc_info.resp_ies_len = drv->assoc_resp_ies_len; | |
648 | } | |
649 | ||
650 | wpa_supplicant_event(drv->ctx, EVENT_ASSOCINFO, &data); | |
651 | ||
652 | os_free(data.assoc_info.req_ies); | |
653 | os_free(data.assoc_info.resp_ies); | |
654 | } | |
c2a04078 | 655 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
656 | |
657 | ||
658 | static void wpa_driver_nl80211_event_wireless(struct wpa_driver_nl80211_data *drv, | |
659 | void *ctx, char *data, int len) | |
660 | { | |
661 | struct iw_event iwe_buf, *iwe = &iwe_buf; | |
c2a04078 JM |
662 | char *pos, *end, *custom; |
663 | #ifdef WEXT_COMPAT | |
664 | char *buf; | |
665 | #endif /* WEXT_COMPAT */ | |
3f5285e8 JM |
666 | |
667 | pos = data; | |
668 | end = data + len; | |
669 | ||
670 | while (pos + IW_EV_LCP_LEN <= end) { | |
671 | /* Event data may be unaligned, so make a local, aligned copy | |
672 | * before processing. */ | |
673 | os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN); | |
674 | wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d", | |
675 | iwe->cmd, iwe->len); | |
676 | if (iwe->len <= IW_EV_LCP_LEN) | |
677 | return; | |
678 | ||
679 | custom = pos + IW_EV_POINT_LEN; | |
680 | if (drv->we_version_compiled > 18 && | |
681 | (iwe->cmd == IWEVMICHAELMICFAILURE || | |
682 | iwe->cmd == IWEVCUSTOM || | |
683 | iwe->cmd == IWEVASSOCREQIE || | |
684 | iwe->cmd == IWEVASSOCRESPIE || | |
685 | iwe->cmd == IWEVPMKIDCAND)) { | |
686 | /* WE-19 removed the pointer from struct iw_point */ | |
687 | char *dpos = (char *) &iwe_buf.u.data.length; | |
688 | int dlen = dpos - (char *) &iwe_buf; | |
689 | os_memcpy(dpos, pos + IW_EV_LCP_LEN, | |
690 | sizeof(struct iw_event) - dlen); | |
691 | } else { | |
692 | os_memcpy(&iwe_buf, pos, sizeof(struct iw_event)); | |
693 | custom += IW_EV_POINT_OFF; | |
694 | } | |
695 | ||
696 | switch (iwe->cmd) { | |
c2a04078 | 697 | #ifdef WEXT_COMPAT |
3f5285e8 | 698 | case SIOCGIWAP: |
c2a04078 JM |
699 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
700 | break; | |
3f5285e8 JM |
701 | wpa_printf(MSG_DEBUG, "Wireless event: new AP: " |
702 | MACSTR, | |
703 | MAC2STR((u8 *) iwe->u.ap_addr.sa_data)); | |
704 | if (is_zero_ether_addr( | |
705 | (const u8 *) iwe->u.ap_addr.sa_data) || | |
706 | os_memcmp(iwe->u.ap_addr.sa_data, | |
707 | "\x44\x44\x44\x44\x44\x44", ETH_ALEN) == | |
708 | 0) { | |
709 | os_free(drv->assoc_req_ies); | |
710 | drv->assoc_req_ies = NULL; | |
711 | os_free(drv->assoc_resp_ies); | |
712 | drv->assoc_resp_ies = NULL; | |
713 | wpa_supplicant_event(ctx, EVENT_DISASSOC, | |
714 | NULL); | |
715 | ||
716 | } else { | |
717 | wpa_driver_nl80211_event_assoc_ies(drv); | |
718 | wpa_supplicant_event(ctx, EVENT_ASSOC, NULL); | |
719 | } | |
720 | break; | |
c2a04078 | 721 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
722 | case IWEVMICHAELMICFAILURE: |
723 | wpa_driver_nl80211_event_wireless_michaelmicfailure( | |
724 | ctx, custom, iwe->u.data.length); | |
725 | break; | |
c2a04078 | 726 | #ifdef WEXT_COMPAT |
3f5285e8 | 727 | case IWEVCUSTOM: |
c2a04078 JM |
728 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
729 | break; | |
3f5285e8 JM |
730 | if (custom + iwe->u.data.length > end) |
731 | return; | |
732 | buf = os_malloc(iwe->u.data.length + 1); | |
733 | if (buf == NULL) | |
734 | return; | |
735 | os_memcpy(buf, custom, iwe->u.data.length); | |
736 | buf[iwe->u.data.length] = '\0'; | |
737 | wpa_driver_nl80211_event_wireless_custom(ctx, buf); | |
738 | os_free(buf); | |
739 | break; | |
3f5285e8 | 740 | case IWEVASSOCREQIE: |
c2a04078 JM |
741 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
742 | break; | |
3f5285e8 JM |
743 | wpa_driver_nl80211_event_wireless_assocreqie( |
744 | drv, custom, iwe->u.data.length); | |
745 | break; | |
746 | case IWEVASSOCRESPIE: | |
c2a04078 JM |
747 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
748 | break; | |
3f5285e8 JM |
749 | wpa_driver_nl80211_event_wireless_assocrespie( |
750 | drv, custom, iwe->u.data.length); | |
751 | break; | |
752 | case IWEVPMKIDCAND: | |
753 | wpa_driver_nl80211_event_wireless_pmkidcand( | |
754 | drv, custom, iwe->u.data.length); | |
755 | break; | |
95f02a5d | 756 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
757 | } |
758 | ||
759 | pos += iwe->len; | |
760 | } | |
761 | } | |
762 | ||
763 | ||
7524cfb1 JM |
764 | static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv, |
765 | void *ctx, char *buf, size_t len, | |
766 | int del) | |
3f5285e8 JM |
767 | { |
768 | union wpa_event_data event; | |
769 | ||
770 | os_memset(&event, 0, sizeof(event)); | |
771 | if (len > sizeof(event.interface_status.ifname)) | |
772 | len = sizeof(event.interface_status.ifname) - 1; | |
773 | os_memcpy(event.interface_status.ifname, buf, len); | |
774 | event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED : | |
775 | EVENT_INTERFACE_ADDED; | |
776 | ||
777 | wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s", | |
778 | del ? "DEL" : "NEW", | |
779 | event.interface_status.ifname, | |
780 | del ? "removed" : "added"); | |
781 | ||
7524cfb1 JM |
782 | if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) { |
783 | if (del) | |
784 | drv->if_removed = 1; | |
785 | else | |
786 | drv->if_removed = 0; | |
787 | } | |
788 | ||
3f5285e8 JM |
789 | wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event); |
790 | } | |
791 | ||
792 | ||
7524cfb1 JM |
793 | static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, |
794 | struct nlmsghdr *h) | |
795 | { | |
796 | struct ifinfomsg *ifi; | |
797 | int attrlen, _nlmsg_len, rta_len; | |
798 | struct rtattr *attr; | |
799 | ||
800 | ifi = NLMSG_DATA(h); | |
801 | ||
802 | _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg)); | |
803 | ||
804 | attrlen = h->nlmsg_len - _nlmsg_len; | |
805 | if (attrlen < 0) | |
806 | return 0; | |
807 | ||
808 | attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len); | |
809 | ||
810 | rta_len = RTA_ALIGN(sizeof(struct rtattr)); | |
811 | while (RTA_OK(attr, attrlen)) { | |
812 | if (attr->rta_type == IFLA_IFNAME) { | |
813 | if (os_strcmp(((char *) attr) + rta_len, drv->ifname) | |
814 | == 0) | |
815 | return 1; | |
816 | else | |
817 | break; | |
818 | } | |
819 | attr = RTA_NEXT(attr, attrlen); | |
820 | } | |
821 | ||
822 | return 0; | |
823 | } | |
824 | ||
825 | ||
826 | static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, | |
827 | int ifindex, struct nlmsghdr *h) | |
828 | { | |
829 | if (drv->ifindex == ifindex) | |
830 | return 1; | |
831 | ||
832 | if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) { | |
833 | drv->ifindex = if_nametoindex(drv->ifname); | |
834 | wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " | |
835 | "interface"); | |
836 | wpa_driver_nl80211_finish_drv_init(drv); | |
837 | return 1; | |
838 | } | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | ||
3f5285e8 JM |
844 | static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv, |
845 | void *ctx, struct nlmsghdr *h, | |
846 | size_t len) | |
847 | { | |
848 | struct ifinfomsg *ifi; | |
849 | int attrlen, _nlmsg_len, rta_len; | |
850 | struct rtattr * attr; | |
851 | ||
852 | if (len < sizeof(*ifi)) | |
853 | return; | |
854 | ||
855 | ifi = NLMSG_DATA(h); | |
856 | ||
7524cfb1 | 857 | if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) { |
3f5285e8 JM |
858 | wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d", |
859 | ifi->ifi_index); | |
860 | return; | |
861 | } | |
862 | ||
863 | wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x " | |
864 | "(%s%s%s%s)", | |
865 | drv->operstate, ifi->ifi_flags, | |
866 | (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", | |
867 | (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", | |
868 | (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", | |
869 | (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); | |
870 | /* | |
871 | * Some drivers send the association event before the operup event--in | |
872 | * this case, lifting operstate in wpa_driver_nl80211_set_operstate() | |
873 | * fails. This will hit us when wpa_supplicant does not need to do | |
874 | * IEEE 802.1X authentication | |
875 | */ | |
876 | if (drv->operstate == 1 && | |
877 | (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && | |
878 | !(ifi->ifi_flags & IFF_RUNNING)) | |
879 | wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP); | |
880 | ||
881 | _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg)); | |
882 | ||
883 | attrlen = h->nlmsg_len - _nlmsg_len; | |
884 | if (attrlen < 0) | |
885 | return; | |
886 | ||
887 | attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len); | |
888 | ||
889 | rta_len = RTA_ALIGN(sizeof(struct rtattr)); | |
890 | while (RTA_OK(attr, attrlen)) { | |
891 | if (attr->rta_type == IFLA_WIRELESS) { | |
892 | wpa_driver_nl80211_event_wireless( | |
893 | drv, ctx, ((char *) attr) + rta_len, | |
894 | attr->rta_len - rta_len); | |
895 | } else if (attr->rta_type == IFLA_IFNAME) { | |
7524cfb1 JM |
896 | wpa_driver_nl80211_event_link( |
897 | drv, ctx, | |
898 | ((char *) attr) + rta_len, | |
899 | attr->rta_len - rta_len, 0); | |
3f5285e8 JM |
900 | } |
901 | attr = RTA_NEXT(attr, attrlen); | |
902 | } | |
903 | } | |
904 | ||
905 | ||
906 | static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv, | |
907 | void *ctx, struct nlmsghdr *h, | |
908 | size_t len) | |
909 | { | |
910 | struct ifinfomsg *ifi; | |
911 | int attrlen, _nlmsg_len, rta_len; | |
912 | struct rtattr * attr; | |
913 | ||
914 | if (len < sizeof(*ifi)) | |
915 | return; | |
916 | ||
917 | ifi = NLMSG_DATA(h); | |
918 | ||
919 | _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg)); | |
920 | ||
921 | attrlen = h->nlmsg_len - _nlmsg_len; | |
922 | if (attrlen < 0) | |
923 | return; | |
924 | ||
925 | attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len); | |
926 | ||
927 | rta_len = RTA_ALIGN(sizeof(struct rtattr)); | |
928 | while (RTA_OK(attr, attrlen)) { | |
929 | if (attr->rta_type == IFLA_IFNAME) { | |
7524cfb1 JM |
930 | wpa_driver_nl80211_event_link( |
931 | drv, ctx, | |
932 | ((char *) attr) + rta_len, | |
933 | attr->rta_len - rta_len, 1); | |
3f5285e8 JM |
934 | } |
935 | attr = RTA_NEXT(attr, attrlen); | |
936 | } | |
937 | } | |
938 | ||
939 | ||
97865538 JM |
940 | static void wpa_driver_nl80211_event_receive_wext(int sock, void *eloop_ctx, |
941 | void *sock_ctx) | |
3f5285e8 JM |
942 | { |
943 | char buf[8192]; | |
944 | int left; | |
945 | struct sockaddr_nl from; | |
946 | socklen_t fromlen; | |
947 | struct nlmsghdr *h; | |
948 | int max_events = 10; | |
949 | ||
950 | try_again: | |
951 | fromlen = sizeof(from); | |
952 | left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT, | |
953 | (struct sockaddr *) &from, &fromlen); | |
954 | if (left < 0) { | |
955 | if (errno != EINTR && errno != EAGAIN) | |
956 | perror("recvfrom(netlink)"); | |
957 | return; | |
958 | } | |
959 | ||
960 | h = (struct nlmsghdr *) buf; | |
961 | while (left >= (int) sizeof(*h)) { | |
962 | int len, plen; | |
963 | ||
964 | len = h->nlmsg_len; | |
965 | plen = len - sizeof(*h); | |
966 | if (len > left || plen < 0) { | |
967 | wpa_printf(MSG_DEBUG, "Malformed netlink message: " | |
968 | "len=%d left=%d plen=%d", | |
969 | len, left, plen); | |
970 | break; | |
971 | } | |
972 | ||
973 | switch (h->nlmsg_type) { | |
974 | case RTM_NEWLINK: | |
975 | wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx, | |
976 | h, plen); | |
977 | break; | |
978 | case RTM_DELLINK: | |
979 | wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx, | |
980 | h, plen); | |
981 | break; | |
982 | } | |
983 | ||
984 | len = NLMSG_ALIGN(len); | |
985 | left -= len; | |
986 | h = (struct nlmsghdr *) ((char *) h + len); | |
987 | } | |
988 | ||
989 | if (left > 0) { | |
990 | wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink " | |
991 | "message", left); | |
992 | } | |
993 | ||
994 | if (--max_events > 0) { | |
995 | /* | |
996 | * Try to receive all events in one eloop call in order to | |
997 | * limit race condition on cases where AssocInfo event, Assoc | |
998 | * event, and EAPOL frames are received more or less at the | |
999 | * same time. We want to process the event messages first | |
1000 | * before starting EAPOL processing. | |
1001 | */ | |
1002 | goto try_again; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | ||
97865538 JM |
1007 | static int no_seq_check(struct nl_msg *msg, void *arg) |
1008 | { | |
1009 | return NL_OK; | |
1010 | } | |
1011 | ||
1012 | ||
c2a04078 JM |
1013 | static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, |
1014 | const u8 *frame, size_t len) | |
1015 | { | |
1016 | const struct ieee80211_mgmt *mgmt; | |
1017 | union wpa_event_data event; | |
1018 | ||
1019 | mgmt = (const struct ieee80211_mgmt *) frame; | |
1020 | if (len < 24 + sizeof(mgmt->u.auth)) { | |
1021 | wpa_printf(MSG_DEBUG, "nl80211: Too short association event " | |
1022 | "frame"); | |
1023 | return; | |
1024 | } | |
1025 | ||
1026 | os_memset(&event, 0, sizeof(event)); | |
1027 | os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); | |
1028 | event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); | |
1029 | event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); | |
1030 | if (len > 24 + sizeof(mgmt->u.auth)) { | |
1031 | event.auth.ies = mgmt->u.auth.variable; | |
1032 | event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); | |
1033 | } | |
1034 | ||
1035 | wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); | |
1036 | } | |
1037 | ||
1038 | ||
1039 | static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, | |
1040 | const u8 *frame, size_t len) | |
1041 | { | |
1042 | const struct ieee80211_mgmt *mgmt; | |
1043 | union wpa_event_data event; | |
1044 | u16 status; | |
1045 | ||
1046 | mgmt = (const struct ieee80211_mgmt *) frame; | |
1047 | if (len < 24 + sizeof(mgmt->u.assoc_resp)) { | |
1048 | wpa_printf(MSG_DEBUG, "nl80211: Too short association event " | |
1049 | "frame"); | |
1050 | return; | |
1051 | } | |
1052 | ||
1053 | status = le_to_host16(mgmt->u.assoc_resp.status_code); | |
1054 | if (status != WLAN_STATUS_SUCCESS) { | |
1055 | wpa_printf(MSG_DEBUG, "nl80211: Association failed: status " | |
1056 | "code %d", status); | |
1057 | /* TODO: notify SME so that things like SA Query and comeback | |
1058 | * time can be implemented */ | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | drv->associated = 1; | |
1063 | os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); | |
1064 | ||
1065 | os_memset(&event, 0, sizeof(event)); | |
1066 | if (len > 24 + sizeof(mgmt->u.assoc_resp)) { | |
1067 | event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; | |
1068 | event.assoc_info.resp_ies_len = | |
1069 | len - 24 - sizeof(mgmt->u.assoc_req); | |
1070 | } | |
1071 | ||
1072 | wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); | |
1073 | } | |
1074 | ||
1075 | ||
1076 | static void mlme_event(struct wpa_driver_nl80211_data *drv, | |
1077 | enum nl80211_commands cmd, struct nlattr *frame) | |
1078 | { | |
1079 | if (frame == NULL) { | |
1080 | wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame " | |
1081 | "data", cmd); | |
1082 | return; | |
1083 | } | |
1084 | ||
1085 | wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd); | |
1086 | wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", | |
1087 | nla_data(frame), nla_len(frame)); | |
1088 | ||
1089 | switch (cmd) { | |
1090 | case NL80211_CMD_AUTHENTICATE: | |
1091 | mlme_event_auth(drv, nla_data(frame), nla_len(frame)); | |
1092 | break; | |
1093 | case NL80211_CMD_ASSOCIATE: | |
1094 | mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); | |
1095 | break; | |
1096 | case NL80211_CMD_DEAUTHENTICATE: | |
1097 | drv->associated = 0; | |
1098 | wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL); | |
1099 | break; | |
1100 | case NL80211_CMD_DISASSOCIATE: | |
1101 | drv->associated = 0; | |
1102 | wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL); | |
1103 | break; | |
1104 | default: | |
1105 | break; | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | ||
97865538 JM |
1110 | static int process_event(struct nl_msg *msg, void *arg) |
1111 | { | |
1112 | struct wpa_driver_nl80211_data *drv = arg; | |
1113 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
1114 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
1115 | ||
1116 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
1117 | genlmsg_attrlen(gnlh, 0), NULL); | |
1118 | ||
1119 | if (tb[NL80211_ATTR_IFINDEX]) { | |
1120 | int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); | |
1121 | if (ifindex != drv->ifindex) { | |
1122 | wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)" | |
1123 | " for foreign interface (ifindex %d)", | |
1124 | gnlh->cmd, ifindex); | |
1125 | return NL_SKIP; | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | switch (gnlh->cmd) { | |
1130 | case NL80211_CMD_NEW_SCAN_RESULTS: | |
1131 | wpa_printf(MSG_DEBUG, "nl80211: New scan results available"); | |
1132 | drv->scan_complete_events = 1; | |
1133 | eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, | |
1134 | drv->ctx); | |
1135 | wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL); | |
1136 | break; | |
1137 | case NL80211_CMD_SCAN_ABORTED: | |
1138 | wpa_printf(MSG_DEBUG, "nl80211: Scan aborted"); | |
1139 | /* | |
1140 | * Need to indicate that scan results are available in order | |
1141 | * not to make wpa_supplicant stop its scanning. | |
1142 | */ | |
1143 | eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, | |
1144 | drv->ctx); | |
1145 | wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL); | |
1146 | break; | |
c2a04078 JM |
1147 | case NL80211_CMD_AUTHENTICATE: |
1148 | case NL80211_CMD_ASSOCIATE: | |
1149 | case NL80211_CMD_DEAUTHENTICATE: | |
1150 | case NL80211_CMD_DISASSOCIATE: | |
1151 | mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME]); | |
1152 | break; | |
97865538 | 1153 | default: |
c2a04078 JM |
1154 | wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " |
1155 | "(cmd=%d)", gnlh->cmd); | |
97865538 JM |
1156 | break; |
1157 | } | |
1158 | ||
1159 | return NL_SKIP; | |
1160 | } | |
1161 | ||
1162 | ||
1163 | static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, | |
1164 | void *sock_ctx) | |
1165 | { | |
1166 | struct nl_cb *cb; | |
1167 | struct wpa_driver_nl80211_data *drv = eloop_ctx; | |
1168 | ||
1169 | wpa_printf(MSG_DEBUG, "nl80211: Event message available"); | |
1170 | ||
1171 | cb = nl_cb_clone(drv->nl_cb); | |
1172 | if (!cb) | |
1173 | return; | |
1174 | nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); | |
1175 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv); | |
1176 | nl_recvmsgs(drv->nl_handle, cb); | |
1177 | nl_cb_put(cb); | |
1178 | } | |
1179 | ||
1180 | ||
3f5285e8 JM |
1181 | static int wpa_driver_nl80211_get_ifflags_ifname(struct wpa_driver_nl80211_data *drv, |
1182 | const char *ifname, int *flags) | |
1183 | { | |
1184 | struct ifreq ifr; | |
1185 | ||
1186 | os_memset(&ifr, 0, sizeof(ifr)); | |
1187 | os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); | |
1188 | if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { | |
1189 | perror("ioctl[SIOCGIFFLAGS]"); | |
1190 | return -1; | |
1191 | } | |
1192 | *flags = ifr.ifr_flags & 0xffff; | |
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | ||
1197 | /** | |
1198 | * wpa_driver_nl80211_get_ifflags - Get interface flags (SIOCGIFFLAGS) | |
1199 | * @drv: driver_nl80211 private data | |
1200 | * @flags: Pointer to returned flags value | |
1201 | * Returns: 0 on success, -1 on failure | |
1202 | */ | |
1203 | static int wpa_driver_nl80211_get_ifflags(struct wpa_driver_nl80211_data *drv, | |
1204 | int *flags) | |
1205 | { | |
1206 | return wpa_driver_nl80211_get_ifflags_ifname(drv, drv->ifname, flags); | |
1207 | } | |
1208 | ||
1209 | ||
1210 | static int wpa_driver_nl80211_set_ifflags_ifname( | |
1211 | struct wpa_driver_nl80211_data *drv, | |
1212 | const char *ifname, int flags) | |
1213 | { | |
1214 | struct ifreq ifr; | |
1215 | ||
1216 | os_memset(&ifr, 0, sizeof(ifr)); | |
1217 | os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); | |
1218 | ifr.ifr_flags = flags & 0xffff; | |
1219 | if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { | |
1220 | perror("SIOCSIFFLAGS"); | |
1221 | return -1; | |
1222 | } | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | ||
1227 | /** | |
1228 | * wpa_driver_nl80211_set_ifflags - Set interface flags (SIOCSIFFLAGS) | |
1229 | * @drv: driver_nl80211 private data | |
1230 | * @flags: New value for flags | |
1231 | * Returns: 0 on success, -1 on failure | |
1232 | */ | |
1233 | static int wpa_driver_nl80211_set_ifflags(struct wpa_driver_nl80211_data *drv, | |
1234 | int flags) | |
1235 | { | |
1236 | return wpa_driver_nl80211_set_ifflags_ifname(drv, drv->ifname, flags); | |
1237 | } | |
1238 | ||
1239 | ||
6d158490 LR |
1240 | /** |
1241 | * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain | |
1242 | * @priv: driver_nl80211 private data | |
1243 | * @alpha2_arg: country to which to switch to | |
1244 | * Returns: 0 on success, -1 on failure | |
1245 | * | |
1246 | * This asks nl80211 to set the regulatory domain for given | |
1247 | * country ISO / IEC alpha2. | |
1248 | */ | |
1249 | static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) | |
1250 | { | |
1251 | struct wpa_driver_nl80211_data *drv = priv; | |
1252 | char alpha2[3]; | |
1253 | struct nl_msg *msg; | |
1254 | ||
1255 | msg = nlmsg_alloc(); | |
1256 | if (!msg) | |
1257 | goto nla_put_failure; | |
1258 | ||
1259 | alpha2[0] = alpha2_arg[0]; | |
1260 | alpha2[1] = alpha2_arg[1]; | |
1261 | alpha2[2] = '\0'; | |
1262 | ||
1263 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, | |
1264 | 0, NL80211_CMD_REQ_SET_REG, 0); | |
1265 | ||
1266 | NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); | |
1267 | if (send_and_recv_msgs(drv, msg, NULL, NULL)) | |
1268 | return -EINVAL; | |
1269 | return 0; | |
1270 | nla_put_failure: | |
1271 | return -EINVAL; | |
1272 | } | |
1273 | ||
1274 | ||
80bc75f1 JM |
1275 | struct wiphy_info_data { |
1276 | int max_scan_ssids; | |
1277 | }; | |
1278 | ||
1279 | ||
1280 | static int wiphy_info_handler(struct nl_msg *msg, void *arg) | |
1281 | { | |
1282 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
1283 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
1284 | struct wiphy_info_data *info = arg; | |
1285 | ||
1286 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
1287 | genlmsg_attrlen(gnlh, 0), NULL); | |
1288 | ||
1289 | if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) | |
1290 | info->max_scan_ssids = | |
1291 | nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); | |
1292 | ||
1293 | return NL_SKIP; | |
1294 | } | |
1295 | ||
1296 | ||
1297 | static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, | |
1298 | struct wiphy_info_data *info) | |
1299 | { | |
1300 | struct nl_msg *msg; | |
1301 | ||
1302 | os_memset(info, 0, sizeof(*info)); | |
1303 | msg = nlmsg_alloc(); | |
1304 | if (!msg) | |
1305 | return -1; | |
1306 | ||
1307 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, | |
1308 | 0, NL80211_CMD_GET_WIPHY, 0); | |
1309 | ||
1310 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
1311 | ||
1312 | if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0) | |
1313 | return 0; | |
1314 | msg = NULL; | |
1315 | nla_put_failure: | |
1316 | nlmsg_free(msg); | |
1317 | return -1; | |
1318 | } | |
1319 | ||
1320 | ||
1321 | static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) | |
1322 | { | |
1323 | struct wiphy_info_data info; | |
1324 | if (wpa_driver_nl80211_get_info(drv, &info)) | |
1325 | return; | |
1326 | drv->has_capability = 1; | |
1327 | drv->capa.max_scan_ssids = info.max_scan_ssids; | |
1328 | } | |
1329 | ||
1330 | ||
3f5285e8 | 1331 | /** |
7e5ba1b9 | 1332 | * wpa_driver_nl80211_init - Initialize nl80211 driver interface |
3f5285e8 JM |
1333 | * @ctx: context to be used when calling wpa_supplicant functions, |
1334 | * e.g., wpa_supplicant_event() | |
1335 | * @ifname: interface name, e.g., wlan0 | |
1336 | * Returns: Pointer to private data, %NULL on failure | |
1337 | */ | |
7e5ba1b9 | 1338 | static void * wpa_driver_nl80211_init(void *ctx, const char *ifname) |
3f5285e8 | 1339 | { |
97865538 | 1340 | int s, ret; |
3f5285e8 JM |
1341 | struct sockaddr_nl local; |
1342 | struct wpa_driver_nl80211_data *drv; | |
1343 | ||
1344 | drv = os_zalloc(sizeof(*drv)); | |
1345 | if (drv == NULL) | |
1346 | return NULL; | |
1347 | drv->ctx = ctx; | |
1348 | os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname)); | |
1349 | ||
1350 | drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); | |
1351 | if (drv->nl_cb == NULL) { | |
1352 | wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " | |
1353 | "callbacks"); | |
1354 | goto err1; | |
1355 | } | |
1356 | ||
1357 | drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb); | |
1358 | if (drv->nl_handle == NULL) { | |
1359 | wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " | |
1360 | "callbacks"); | |
1361 | goto err2; | |
1362 | } | |
1363 | ||
1364 | if (genl_connect(drv->nl_handle)) { | |
1365 | wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " | |
1366 | "netlink"); | |
1367 | goto err3; | |
1368 | } | |
1369 | ||
1370 | drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle); | |
1371 | if (drv->nl_cache == NULL) { | |
1372 | wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " | |
1373 | "netlink cache"); | |
1374 | goto err3; | |
1375 | } | |
1376 | ||
1377 | drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211"); | |
1378 | if (drv->nl80211 == NULL) { | |
1379 | wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " | |
1380 | "found"); | |
1381 | goto err4; | |
1382 | } | |
1383 | ||
97865538 JM |
1384 | ret = nl_get_multicast_id(drv, "nl80211", "scan"); |
1385 | if (ret >= 0) | |
1386 | ret = nl_socket_add_membership(drv->nl_handle, ret); | |
1387 | if (ret < 0) { | |
1388 | wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " | |
1389 | "membership for scan events: %d (%s)", | |
1390 | ret, strerror(-ret)); | |
1391 | goto err4; | |
1392 | } | |
c2a04078 JM |
1393 | |
1394 | ret = nl_get_multicast_id(drv, "nl80211", "mlme"); | |
1395 | if (ret >= 0) | |
1396 | ret = nl_socket_add_membership(drv->nl_handle, ret); | |
1397 | #ifdef WEXT_COMPAT | |
1398 | if (ret < 0) { | |
1399 | wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " | |
1400 | "membership for mlme events: %d (%s)", | |
1401 | ret, strerror(-ret)); | |
1402 | /* Use WEXT for association request */ | |
1403 | } else | |
1404 | drv->capa.flags |= WPA_DRIVER_FLAGS_SME; | |
1405 | #else /* WEXT_COMPAT */ | |
1406 | if (ret < 0) { | |
1407 | wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " | |
1408 | "membership for mlme events: %d (%s)", | |
1409 | ret, strerror(-ret)); | |
1410 | goto err4; | |
1411 | } | |
1412 | drv->capa.flags |= WPA_DRIVER_FLAGS_SME; | |
1413 | #endif /* WEXT_COMPAT */ | |
1414 | ||
97865538 JM |
1415 | eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle), |
1416 | wpa_driver_nl80211_event_receive, drv, ctx); | |
1417 | ||
3f5285e8 JM |
1418 | drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0); |
1419 | if (drv->ioctl_sock < 0) { | |
1420 | perror("socket(PF_INET,SOCK_DGRAM)"); | |
1421 | goto err5; | |
1422 | } | |
1423 | ||
1424 | s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); | |
1425 | if (s < 0) { | |
1426 | perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)"); | |
1427 | goto err6; | |
1428 | } | |
1429 | ||
1430 | os_memset(&local, 0, sizeof(local)); | |
1431 | local.nl_family = AF_NETLINK; | |
1432 | local.nl_groups = RTMGRP_LINK; | |
1433 | if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) { | |
1434 | perror("bind(netlink)"); | |
1435 | close(s); | |
1436 | goto err6; | |
1437 | } | |
1438 | ||
97865538 | 1439 | eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_wext, drv, |
3f5285e8 | 1440 | ctx); |
97865538 | 1441 | drv->wext_event_sock = s; |
3f5285e8 | 1442 | |
362f781e JM |
1443 | if (wpa_driver_nl80211_finish_drv_init(drv)) |
1444 | goto err7; | |
7524cfb1 JM |
1445 | |
1446 | return drv; | |
1447 | ||
362f781e JM |
1448 | err7: |
1449 | eloop_unregister_read_sock(drv->wext_event_sock); | |
1450 | close(drv->wext_event_sock); | |
7524cfb1 JM |
1451 | err6: |
1452 | close(drv->ioctl_sock); | |
1453 | err5: | |
1454 | genl_family_put(drv->nl80211); | |
1455 | err4: | |
1456 | nl_cache_free(drv->nl_cache); | |
1457 | err3: | |
1458 | nl_handle_destroy(drv->nl_handle); | |
1459 | err2: | |
1460 | nl_cb_put(drv->nl_cb); | |
1461 | err1: | |
1462 | os_free(drv); | |
1463 | return NULL; | |
1464 | } | |
1465 | ||
1466 | ||
362f781e | 1467 | static int |
7524cfb1 JM |
1468 | wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv) |
1469 | { | |
1470 | int flags; | |
1471 | ||
a87c9d96 JM |
1472 | drv->ifindex = if_nametoindex(drv->ifname); |
1473 | ||
1474 | if (wpa_driver_nl80211_set_mode(drv, 0) < 0) { | |
1475 | wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to " | |
1476 | "use managed mode"); | |
1477 | } | |
1478 | ||
362f781e JM |
1479 | if (wpa_driver_nl80211_get_ifflags(drv, &flags) != 0) { |
1480 | wpa_printf(MSG_ERROR, "Could not get interface '%s' flags", | |
1481 | drv->ifname); | |
1482 | return -1; | |
1483 | } | |
1484 | if (!(flags & IFF_UP)) { | |
3f5285e8 | 1485 | if (wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP) != 0) { |
362f781e JM |
1486 | wpa_printf(MSG_ERROR, "Could not set interface '%s' " |
1487 | "UP", drv->ifname); | |
1488 | return -1; | |
3f5285e8 JM |
1489 | } |
1490 | } | |
1491 | ||
f555b6de | 1492 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
1493 | /* |
1494 | * Make sure that the driver does not have any obsolete PMKID entries. | |
1495 | */ | |
1496 | wpa_driver_nl80211_flush_pmkid(drv); | |
f555b6de | 1497 | #endif /* WEXT_COMPAT */ |
3f5285e8 | 1498 | |
3f5285e8 JM |
1499 | wpa_driver_nl80211_get_range(drv); |
1500 | ||
80bc75f1 JM |
1501 | wpa_driver_nl80211_capa(drv); |
1502 | ||
3f5285e8 | 1503 | wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT); |
362f781e JM |
1504 | |
1505 | return 0; | |
3f5285e8 JM |
1506 | } |
1507 | ||
1508 | ||
1509 | /** | |
7e5ba1b9 JM |
1510 | * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface |
1511 | * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init() | |
3f5285e8 JM |
1512 | * |
1513 | * Shut down driver interface and processing of driver events. Free | |
1514 | * private data buffer if one was allocated in wpa_driver_nl80211_init(). | |
1515 | */ | |
7e5ba1b9 | 1516 | static void wpa_driver_nl80211_deinit(void *priv) |
3f5285e8 JM |
1517 | { |
1518 | struct wpa_driver_nl80211_data *drv = priv; | |
1519 | int flags; | |
1520 | ||
1521 | eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); | |
1522 | ||
ed384c2c | 1523 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
1524 | /* |
1525 | * Clear possibly configured driver parameters in order to make it | |
1526 | * easier to use the driver after wpa_supplicant has been terminated. | |
1527 | */ | |
1528 | (void) wpa_driver_nl80211_set_bssid(drv, | |
1529 | (u8 *) "\x00\x00\x00\x00\x00\x00"); | |
ed384c2c | 1530 | #endif /* WEXT_COMPAT */ |
36b15723 | 1531 | wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, 0); |
3f5285e8 JM |
1532 | |
1533 | wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP); | |
1534 | ||
97865538 | 1535 | eloop_unregister_read_sock(drv->wext_event_sock); |
3f5285e8 JM |
1536 | |
1537 | if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) | |
1538 | (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP); | |
1539 | ||
97865538 | 1540 | close(drv->wext_event_sock); |
3f5285e8 | 1541 | close(drv->ioctl_sock); |
c2a04078 | 1542 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
1543 | os_free(drv->assoc_req_ies); |
1544 | os_free(drv->assoc_resp_ies); | |
c2a04078 | 1545 | #endif /* WEXT_COMPAT */ |
3f5285e8 | 1546 | |
97865538 | 1547 | eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle)); |
3f5285e8 JM |
1548 | genl_family_put(drv->nl80211); |
1549 | nl_cache_free(drv->nl_cache); | |
1550 | nl_handle_destroy(drv->nl_handle); | |
1551 | nl_cb_put(drv->nl_cb); | |
1552 | ||
1553 | os_free(drv); | |
1554 | } | |
1555 | ||
1556 | ||
1557 | /** | |
1558 | * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion | |
1559 | * @eloop_ctx: Unused | |
1560 | * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() | |
1561 | * | |
1562 | * This function can be used as registered timeout when starting a scan to | |
1563 | * generate a scan completed event if the driver does not report this. | |
1564 | */ | |
1565 | static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) | |
1566 | { | |
1567 | wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); | |
1568 | wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); | |
1569 | } | |
1570 | ||
1571 | ||
1572 | /** | |
1573 | * wpa_driver_nl80211_scan - Request the driver to initiate scan | |
1574 | * @priv: Pointer to private wext data from wpa_driver_nl80211_init() | |
6a1063e0 | 1575 | * @params: Scan parameters |
3f5285e8 JM |
1576 | * Returns: 0 on success, -1 on failure |
1577 | */ | |
6a1063e0 JM |
1578 | static int wpa_driver_nl80211_scan(void *priv, |
1579 | struct wpa_driver_scan_params *params) | |
3f5285e8 JM |
1580 | { |
1581 | struct wpa_driver_nl80211_data *drv = priv; | |
3f5285e8 | 1582 | int ret = 0, timeout; |
0e75527f | 1583 | struct nl_msg *msg, *ssids; |
6a1063e0 | 1584 | size_t i; |
3f5285e8 | 1585 | |
0e75527f JM |
1586 | msg = nlmsg_alloc(); |
1587 | ssids = nlmsg_alloc(); | |
1588 | if (!msg || !ssids) { | |
1589 | nlmsg_free(msg); | |
1590 | nlmsg_free(ssids); | |
3f5285e8 JM |
1591 | return -1; |
1592 | } | |
1593 | ||
0e75527f JM |
1594 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, |
1595 | NL80211_CMD_TRIGGER_SCAN, 0); | |
1596 | ||
1597 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
3f5285e8 | 1598 | |
6a1063e0 JM |
1599 | for (i = 0; i < params->num_ssids; i++) { |
1600 | NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len, | |
1601 | params->ssids[i].ssid); | |
3f5285e8 | 1602 | } |
6a1063e0 JM |
1603 | if (params->num_ssids) |
1604 | nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); | |
3f5285e8 | 1605 | |
d173df52 JM |
1606 | if (params->extra_ies) { |
1607 | NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len, | |
1608 | params->extra_ies); | |
1609 | } | |
1610 | ||
0e75527f JM |
1611 | ret = send_and_recv_msgs(drv, msg, NULL, NULL); |
1612 | msg = NULL; | |
1613 | if (ret) { | |
1614 | wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " | |
1615 | "(%s)", ret, strerror(-ret)); | |
1616 | goto nla_put_failure; | |
3f5285e8 JM |
1617 | } |
1618 | ||
1619 | /* Not all drivers generate "scan completed" wireless event, so try to | |
1620 | * read results after a timeout. */ | |
0e75527f | 1621 | timeout = 10; |
3f5285e8 JM |
1622 | if (drv->scan_complete_events) { |
1623 | /* | |
d173df52 JM |
1624 | * The driver seems to deliver events to notify when scan is |
1625 | * complete, so use longer timeout to avoid race conditions | |
1626 | * with scanning and following association request. | |
3f5285e8 JM |
1627 | */ |
1628 | timeout = 30; | |
1629 | } | |
1630 | wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " | |
1631 | "seconds", ret, timeout); | |
1632 | eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); | |
0e75527f JM |
1633 | eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, |
1634 | drv, drv->ctx); | |
3f5285e8 | 1635 | |
0e75527f JM |
1636 | nla_put_failure: |
1637 | nlmsg_free(ssids); | |
1638 | nlmsg_free(msg); | |
3f5285e8 JM |
1639 | return ret; |
1640 | } | |
1641 | ||
1642 | ||
b3db1e1c | 1643 | static int bss_info_handler(struct nl_msg *msg, void *arg) |
3f5285e8 | 1644 | { |
b3db1e1c JM |
1645 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; |
1646 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
1647 | struct nlattr *bss[NL80211_BSS_MAX + 1]; | |
1648 | static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { | |
1649 | [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, | |
1650 | [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, | |
1651 | [NL80211_BSS_TSF] = { .type = NLA_U64 }, | |
1652 | [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, | |
1653 | [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, | |
1654 | [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, | |
1655 | [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, | |
1656 | [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, | |
1657 | }; | |
1658 | struct wpa_scan_results *res = arg; | |
3f5285e8 JM |
1659 | struct wpa_scan_res **tmp; |
1660 | struct wpa_scan_res *r; | |
b3db1e1c JM |
1661 | const u8 *ie; |
1662 | size_t ie_len; | |
3f5285e8 | 1663 | |
b3db1e1c JM |
1664 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), |
1665 | genlmsg_attrlen(gnlh, 0), NULL); | |
1666 | if (!tb[NL80211_ATTR_BSS]) | |
1667 | return NL_SKIP; | |
1668 | if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], | |
1669 | bss_policy)) | |
1670 | return NL_SKIP; | |
1671 | if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { | |
1672 | ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); | |
1673 | ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); | |
1674 | } else { | |
1675 | ie = NULL; | |
1676 | ie_len = 0; | |
1677 | } | |
3f5285e8 | 1678 | |
b3db1e1c | 1679 | r = os_zalloc(sizeof(*r) + ie_len); |
3f5285e8 | 1680 | if (r == NULL) |
b3db1e1c JM |
1681 | return NL_SKIP; |
1682 | if (bss[NL80211_BSS_BSSID]) | |
1683 | os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), | |
1684 | ETH_ALEN); | |
1685 | if (bss[NL80211_BSS_FREQUENCY]) | |
1686 | r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); | |
1687 | if (bss[NL80211_BSS_BEACON_INTERVAL]) | |
1688 | r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); | |
1689 | if (bss[NL80211_BSS_CAPABILITY]) | |
1690 | r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); | |
7c2849d2 JM |
1691 | r->flags |= WPA_SCAN_NOISE_INVALID; |
1692 | if (bss[NL80211_BSS_SIGNAL_MBM]) { | |
b3db1e1c | 1693 | r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); |
7c2849d2 JM |
1694 | r->level /= 100; /* mBm to dBm */ |
1695 | r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; | |
1696 | } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { | |
1697 | r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); | |
1698 | r->flags |= WPA_SCAN_LEVEL_INVALID; | |
1699 | } else | |
1700 | r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; | |
b3db1e1c JM |
1701 | if (bss[NL80211_BSS_TSF]) |
1702 | r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); | |
1703 | r->ie_len = ie_len; | |
1704 | if (ie) | |
1705 | os_memcpy(r + 1, ie, ie_len); | |
3f5285e8 JM |
1706 | |
1707 | tmp = os_realloc(res->res, | |
1708 | (res->num + 1) * sizeof(struct wpa_scan_res *)); | |
1709 | if (tmp == NULL) { | |
1710 | os_free(r); | |
b3db1e1c | 1711 | return NL_SKIP; |
3f5285e8 JM |
1712 | } |
1713 | tmp[res->num++] = r; | |
1714 | res->res = tmp; | |
b3db1e1c JM |
1715 | |
1716 | return NL_SKIP; | |
3f5285e8 | 1717 | } |
b3db1e1c | 1718 | |
3f5285e8 JM |
1719 | |
1720 | /** | |
1721 | * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results | |
1722 | * @priv: Pointer to private wext data from wpa_driver_nl80211_init() | |
1723 | * Returns: Scan results on success, -1 on failure | |
1724 | */ | |
7e5ba1b9 JM |
1725 | static struct wpa_scan_results * |
1726 | wpa_driver_nl80211_get_scan_results(void *priv) | |
3f5285e8 JM |
1727 | { |
1728 | struct wpa_driver_nl80211_data *drv = priv; | |
b3db1e1c | 1729 | struct nl_msg *msg; |
3f5285e8 | 1730 | struct wpa_scan_results *res; |
b3db1e1c | 1731 | int ret; |
3f5285e8 JM |
1732 | |
1733 | res = os_zalloc(sizeof(*res)); | |
b3db1e1c JM |
1734 | if (res == NULL) |
1735 | return 0; | |
1736 | msg = nlmsg_alloc(); | |
1737 | if (!msg) | |
1738 | goto nla_put_failure; | |
3f5285e8 | 1739 | |
b3db1e1c JM |
1740 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP, |
1741 | NL80211_CMD_GET_SCAN, 0); | |
1742 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
3f5285e8 | 1743 | |
b3db1e1c JM |
1744 | ret = send_and_recv_msgs(drv, msg, bss_info_handler, res); |
1745 | msg = NULL; | |
1746 | if (ret == 0) { | |
1747 | wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)", | |
1748 | (unsigned long) res->num); | |
1749 | return res; | |
3f5285e8 | 1750 | } |
b3db1e1c JM |
1751 | wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " |
1752 | "(%s)", ret, strerror(-ret)); | |
1753 | nla_put_failure: | |
1754 | nlmsg_free(msg); | |
1755 | wpa_scan_results_free(res); | |
1756 | return NULL; | |
3f5285e8 JM |
1757 | } |
1758 | ||
1759 | ||
1760 | static int wpa_driver_nl80211_get_range(void *priv) | |
1761 | { | |
1762 | struct wpa_driver_nl80211_data *drv = priv; | |
1763 | struct iw_range *range; | |
1764 | struct iwreq iwr; | |
1765 | int minlen; | |
1766 | size_t buflen; | |
1767 | ||
1768 | /* | |
1769 | * Use larger buffer than struct iw_range in order to allow the | |
1770 | * structure to grow in the future. | |
1771 | */ | |
1772 | buflen = sizeof(struct iw_range) + 500; | |
1773 | range = os_zalloc(buflen); | |
1774 | if (range == NULL) | |
1775 | return -1; | |
1776 | ||
1777 | os_memset(&iwr, 0, sizeof(iwr)); | |
1778 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
1779 | iwr.u.data.pointer = (caddr_t) range; | |
1780 | iwr.u.data.length = buflen; | |
1781 | ||
1782 | minlen = ((char *) &range->enc_capa) - (char *) range + | |
1783 | sizeof(range->enc_capa); | |
1784 | ||
1785 | if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) { | |
1786 | perror("ioctl[SIOCGIWRANGE]"); | |
1787 | os_free(range); | |
1788 | return -1; | |
1789 | } else if (iwr.u.data.length >= minlen && | |
1790 | range->we_version_compiled >= 18) { | |
1791 | wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d " | |
1792 | "WE(source)=%d enc_capa=0x%x", | |
1793 | range->we_version_compiled, | |
1794 | range->we_version_source, | |
1795 | range->enc_capa); | |
1796 | drv->has_capability = 1; | |
1797 | drv->we_version_compiled = range->we_version_compiled; | |
1798 | if (range->enc_capa & IW_ENC_CAPA_WPA) { | |
1799 | drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA | | |
1800 | WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK; | |
1801 | } | |
1802 | if (range->enc_capa & IW_ENC_CAPA_WPA2) { | |
1803 | drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | | |
1804 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; | |
1805 | } | |
1806 | drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 | | |
1807 | WPA_DRIVER_CAPA_ENC_WEP104; | |
1808 | if (range->enc_capa & IW_ENC_CAPA_CIPHER_TKIP) | |
1809 | drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP; | |
1810 | if (range->enc_capa & IW_ENC_CAPA_CIPHER_CCMP) | |
1811 | drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP; | |
1812 | wpa_printf(MSG_DEBUG, " capabilities: key_mgmt 0x%x enc 0x%x", | |
1813 | drv->capa.key_mgmt, drv->capa.enc); | |
1814 | } else { | |
1815 | wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: too old (short) data - " | |
1816 | "assuming WPA is not supported"); | |
1817 | } | |
1818 | ||
1819 | os_free(range); | |
1820 | return 0; | |
1821 | } | |
1822 | ||
1823 | ||
c2a04078 | 1824 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
1825 | static int wpa_driver_nl80211_set_wpa(void *priv, int enabled) |
1826 | { | |
1827 | struct wpa_driver_nl80211_data *drv = priv; | |
c2a04078 JM |
1828 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
1829 | return 0; | |
3f5285e8 JM |
1830 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
1831 | ||
1832 | return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_WPA_ENABLED, | |
1833 | enabled); | |
1834 | } | |
c2a04078 | 1835 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
1836 | |
1837 | ||
1838 | static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg, | |
1839 | const u8 *addr, int key_idx, | |
1840 | int set_tx, const u8 *seq, | |
1841 | size_t seq_len, | |
1842 | const u8 *key, size_t key_len) | |
1843 | { | |
1844 | struct wpa_driver_nl80211_data *drv = priv; | |
6241fcb1 | 1845 | int err; |
3f5285e8 JM |
1846 | struct nl_msg *msg; |
1847 | ||
1848 | wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d " | |
1849 | "seq_len=%lu key_len=%lu", | |
1850 | __func__, alg, addr, key_idx, set_tx, | |
1851 | (unsigned long) seq_len, (unsigned long) key_len); | |
1852 | ||
1853 | msg = nlmsg_alloc(); | |
1854 | if (msg == NULL) | |
1855 | return -1; | |
1856 | ||
1857 | if (alg == WPA_ALG_NONE) { | |
1858 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, | |
1859 | NL80211_CMD_DEL_KEY, 0); | |
1860 | } else { | |
1861 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, | |
1862 | NL80211_CMD_NEW_KEY, 0); | |
1863 | NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key); | |
1864 | switch (alg) { | |
1865 | case WPA_ALG_WEP: | |
1866 | if (key_len == 5) | |
1867 | NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, | |
1868 | 0x000FAC01); | |
1869 | else | |
1870 | NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, | |
1871 | 0x000FAC05); | |
1872 | break; | |
1873 | case WPA_ALG_TKIP: | |
1874 | NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02); | |
1875 | break; | |
1876 | case WPA_ALG_CCMP: | |
1877 | NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04); | |
1878 | break; | |
1879 | default: | |
1880 | nlmsg_free(msg); | |
1881 | return -1; | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
1886 | { | |
1887 | wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr)); | |
1888 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); | |
1889 | } | |
1890 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
1891 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
1892 | ||
6241fcb1 JM |
1893 | err = send_and_recv_msgs(drv, msg, NULL, NULL); |
1894 | if (err) { | |
3f5285e8 | 1895 | wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d", err); |
3f5285e8 JM |
1896 | return -1; |
1897 | } | |
1898 | ||
1899 | if (set_tx && alg != WPA_ALG_NONE) { | |
3f5285e8 JM |
1900 | msg = nlmsg_alloc(); |
1901 | if (msg == NULL) | |
1902 | return -1; | |
1903 | ||
1904 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, | |
1905 | 0, NL80211_CMD_SET_KEY, 0); | |
1906 | NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx); | |
1907 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
1908 | NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT); | |
1909 | ||
6241fcb1 JM |
1910 | err = send_and_recv_msgs(drv, msg, NULL, NULL); |
1911 | if (err) { | |
3f5285e8 JM |
1912 | wpa_printf(MSG_DEBUG, "nl80211: set default key " |
1913 | "failed; err=%d", err); | |
3f5285e8 JM |
1914 | return -1; |
1915 | } | |
1916 | } | |
1917 | ||
6241fcb1 | 1918 | return 0; |
3f5285e8 JM |
1919 | |
1920 | nla_put_failure: | |
6241fcb1 | 1921 | return -ENOBUFS; |
3f5285e8 JM |
1922 | } |
1923 | ||
1924 | ||
c2a04078 | 1925 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
1926 | static int wpa_driver_nl80211_set_countermeasures(void *priv, |
1927 | int enabled) | |
1928 | { | |
1929 | struct wpa_driver_nl80211_data *drv = priv; | |
c2a04078 JM |
1930 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
1931 | return 0; | |
3f5285e8 JM |
1932 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); |
1933 | return wpa_driver_nl80211_set_auth_param(drv, | |
1934 | IW_AUTH_TKIP_COUNTERMEASURES, | |
1935 | enabled); | |
1936 | } | |
c2a04078 | 1937 | #endif /* WEXT_COMPAT */ |
3f5285e8 JM |
1938 | |
1939 | ||
c2a04078 JM |
1940 | #ifdef WEXT_COMPAT |
1941 | static int wpa_driver_nl80211_mlme_wext(struct wpa_driver_nl80211_data *drv, | |
1942 | const u8 *addr, int cmd, | |
1943 | int reason_code) | |
3f5285e8 JM |
1944 | { |
1945 | struct iwreq iwr; | |
1946 | struct iw_mlme mlme; | |
1947 | int ret = 0; | |
1948 | ||
1949 | os_memset(&iwr, 0, sizeof(iwr)); | |
1950 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
1951 | os_memset(&mlme, 0, sizeof(mlme)); | |
1952 | mlme.cmd = cmd; | |
1953 | mlme.reason_code = reason_code; | |
1954 | mlme.addr.sa_family = ARPHRD_ETHER; | |
1955 | os_memcpy(mlme.addr.sa_data, addr, ETH_ALEN); | |
1956 | iwr.u.data.pointer = (caddr_t) &mlme; | |
1957 | iwr.u.data.length = sizeof(mlme); | |
1958 | ||
1959 | if (ioctl(drv->ioctl_sock, SIOCSIWMLME, &iwr) < 0) { | |
1960 | perror("ioctl[SIOCSIWMLME]"); | |
1961 | ret = -1; | |
1962 | } | |
1963 | ||
1964 | return ret; | |
1965 | } | |
c2a04078 JM |
1966 | #endif /* WEXT_COMPAT */ |
1967 | ||
1968 | ||
1969 | static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, | |
1970 | const u8 *addr, int cmd, u16 reason_code) | |
1971 | { | |
1972 | int ret = -1; | |
1973 | struct nl_msg *msg; | |
1974 | ||
1975 | msg = nlmsg_alloc(); | |
1976 | if (!msg) | |
1977 | return -1; | |
1978 | ||
1979 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0); | |
1980 | ||
1981 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
1982 | NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code); | |
1983 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr); | |
1984 | ||
1985 | ret = send_and_recv_msgs(drv, msg, NULL, NULL); | |
1986 | msg = NULL; | |
1987 | if (ret) { | |
1988 | wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d " | |
1989 | "(%s)", ret, strerror(-ret)); | |
1990 | goto nla_put_failure; | |
1991 | } | |
1992 | ret = 0; | |
1993 | ||
1994 | nla_put_failure: | |
1995 | nlmsg_free(msg); | |
1996 | return ret; | |
1997 | } | |
3f5285e8 JM |
1998 | |
1999 | ||
2000 | static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr, | |
c2a04078 | 2001 | int reason_code) |
3f5285e8 JM |
2002 | { |
2003 | struct wpa_driver_nl80211_data *drv = priv; | |
c2a04078 JM |
2004 | wpa_printf(MSG_DEBUG, "%s", __func__); |
2005 | #ifdef WEXT_COMPAT | |
2006 | if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) | |
2007 | return wpa_driver_nl80211_mlme_wext(drv, addr, IW_MLME_DEAUTH, | |
2008 | reason_code); | |
2009 | #endif /* WEXT_COMPAT */ | |
2010 | ||
2011 | return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE, | |
2012 | reason_code); | |
3f5285e8 JM |
2013 | } |
2014 | ||
2015 | ||
2016 | static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, | |
c2a04078 | 2017 | int reason_code) |
3f5285e8 JM |
2018 | { |
2019 | struct wpa_driver_nl80211_data *drv = priv; | |
c2a04078 JM |
2020 | wpa_printf(MSG_DEBUG, "%s", __func__); |
2021 | #ifdef WEXT_COMPAT | |
2022 | if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) | |
2023 | return wpa_driver_nl80211_mlme_wext(drv, addr, | |
2024 | IW_MLME_DISASSOC, | |
2025 | reason_code); | |
2026 | #endif /* WEXT_COMPAT */ | |
2027 | return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE, | |
2028 | reason_code); | |
3f5285e8 JM |
2029 | } |
2030 | ||
2031 | ||
c2a04078 | 2032 | #ifdef WEXT_COMPAT |
3f5285e8 JM |
2033 | static int wpa_driver_nl80211_set_gen_ie(void *priv, const u8 *ie, |
2034 | size_t ie_len) | |
2035 | { | |
2036 | struct wpa_driver_nl80211_data *drv = priv; | |
2037 | struct iwreq iwr; | |
2038 | int ret = 0; | |
2039 | ||
c2a04078 JM |
2040 | if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) |
2041 | return 0; | |
3f5285e8 JM |
2042 | os_memset(&iwr, 0, sizeof(iwr)); |
2043 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
2044 | iwr.u.data.pointer = (caddr_t) ie; | |
2045 | iwr.u.data.length = ie_len; | |
2046 | ||
2047 | if (ioctl(drv->ioctl_sock, SIOCSIWGENIE, &iwr) < 0) { | |
2048 | perror("ioctl[SIOCSIWGENIE]"); | |
2049 | ret = -1; | |
2050 | } | |
2051 | ||
2052 | return ret; | |
2053 | } | |
2054 | ||
2055 | ||
2056 | static int wpa_driver_nl80211_cipher2wext(int cipher) | |
2057 | { | |
2058 | switch (cipher) { | |
2059 | case CIPHER_NONE: | |
2060 | return IW_AUTH_CIPHER_NONE; | |
2061 | case CIPHER_WEP40: | |
2062 | return IW_AUTH_CIPHER_WEP40; | |
2063 | case CIPHER_TKIP: | |
2064 | return IW_AUTH_CIPHER_TKIP; | |
2065 | case CIPHER_CCMP: | |
2066 | return IW_AUTH_CIPHER_CCMP; | |
2067 | case CIPHER_WEP104: | |
2068 | return IW_AUTH_CIPHER_WEP104; | |
2069 | default: | |
2070 | return 0; | |
2071 | } | |
2072 | } | |
2073 | ||
2074 | ||
2075 | static int wpa_driver_nl80211_keymgmt2wext(int keymgmt) | |
2076 | { | |
2077 | switch (keymgmt) { | |
2078 | case KEY_MGMT_802_1X: | |
2079 | case KEY_MGMT_802_1X_NO_WPA: | |
2080 | return IW_AUTH_KEY_MGMT_802_1X; | |
2081 | case KEY_MGMT_PSK: | |
2082 | return IW_AUTH_KEY_MGMT_PSK; | |
2083 | default: | |
2084 | return 0; | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | ||
2089 | static int | |
2090 | wpa_driver_nl80211_auth_alg_fallback(struct wpa_driver_nl80211_data *drv, | |
2091 | struct wpa_driver_associate_params *params) | |
2092 | { | |
2093 | struct iwreq iwr; | |
2094 | int ret = 0; | |
2095 | ||
2096 | wpa_printf(MSG_DEBUG, "WEXT: Driver did not support " | |
2097 | "SIOCSIWAUTH for AUTH_ALG, trying SIOCSIWENCODE"); | |
2098 | ||
2099 | os_memset(&iwr, 0, sizeof(iwr)); | |
2100 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
2101 | /* Just changing mode, not actual keys */ | |
2102 | iwr.u.encoding.flags = 0; | |
2103 | iwr.u.encoding.pointer = (caddr_t) NULL; | |
2104 | iwr.u.encoding.length = 0; | |
2105 | ||
2106 | /* | |
2107 | * Note: IW_ENCODE_{OPEN,RESTRICTED} can be interpreted to mean two | |
2108 | * different things. Here they are used to indicate Open System vs. | |
2109 | * Shared Key authentication algorithm. However, some drivers may use | |
2110 | * them to select between open/restricted WEP encrypted (open = allow | |
2111 | * both unencrypted and encrypted frames; restricted = only allow | |
2112 | * encrypted frames). | |
2113 | */ | |
2114 | ||
2115 | if (!drv->use_crypt) { | |
2116 | iwr.u.encoding.flags |= IW_ENCODE_DISABLED; | |
2117 | } else { | |
2118 | if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM) | |
2119 | iwr.u.encoding.flags |= IW_ENCODE_OPEN; | |
2120 | if (params->auth_alg & AUTH_ALG_SHARED_KEY) | |
2121 | iwr.u.encoding.flags |= IW_ENCODE_RESTRICTED; | |
2122 | } | |
2123 | ||
2124 | if (ioctl(drv->ioctl_sock, SIOCSIWENCODE, &iwr) < 0) { | |
2125 | perror("ioctl[SIOCSIWENCODE]"); | |
2126 | ret = -1; | |
2127 | } | |
2128 | ||
2129 | return ret; | |
2130 | } | |
2131 | ||
2132 | ||
36b15723 JM |
2133 | static int wpa_driver_nl80211_set_auth_alg(struct wpa_driver_nl80211_data *drv, |
2134 | int auth_alg) | |
2135 | { | |
2136 | int algs = 0, res; | |
2137 | ||
2138 | if (auth_alg & AUTH_ALG_OPEN_SYSTEM) | |
2139 | algs |= IW_AUTH_ALG_OPEN_SYSTEM; | |
2140 | if (auth_alg & AUTH_ALG_SHARED_KEY) | |
2141 | algs |= IW_AUTH_ALG_SHARED_KEY; | |
2142 | if (auth_alg & AUTH_ALG_LEAP) | |
2143 | algs |= IW_AUTH_ALG_LEAP; | |
2144 | if (algs == 0) { | |
2145 | /* at least one algorithm should be set */ | |
2146 | algs = IW_AUTH_ALG_OPEN_SYSTEM; | |
2147 | } | |
2148 | ||
2149 | res = wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_80211_AUTH_ALG, | |
2150 | algs); | |
2151 | drv->auth_alg_fallback = res == -2; | |
2152 | return res; | |
2153 | } | |
2154 | ||
2155 | ||
c2a04078 | 2156 | static int wpa_driver_nl80211_associate_wext( |
3f5285e8 JM |
2157 | void *priv, struct wpa_driver_associate_params *params) |
2158 | { | |
2159 | struct wpa_driver_nl80211_data *drv = priv; | |
2160 | int ret = 0; | |
2161 | int allow_unencrypted_eapol; | |
2162 | int value; | |
2163 | ||
2164 | wpa_printf(MSG_DEBUG, "%s", __FUNCTION__); | |
2165 | ||
36b15723 JM |
2166 | wpa_driver_nl80211_set_mode(drv, params->mode); |
2167 | wpa_driver_nl80211_set_auth_alg(drv, params->auth_alg); | |
2168 | ||
3f5285e8 JM |
2169 | /* |
2170 | * If the driver did not support SIOCSIWAUTH, fallback to | |
2171 | * SIOCSIWENCODE here. | |
2172 | */ | |
2173 | if (drv->auth_alg_fallback && | |
2174 | wpa_driver_nl80211_auth_alg_fallback(drv, params) < 0) | |
2175 | ret = -1; | |
2176 | ||
2177 | if (!params->bssid && | |
2178 | wpa_driver_nl80211_set_bssid(drv, NULL) < 0) | |
2179 | ret = -1; | |
2180 | ||
3f5285e8 JM |
2181 | /* TODO: should consider getting wpa version and cipher/key_mgmt suites |
2182 | * from configuration, not from here, where only the selected suite is | |
2183 | * available */ | |
2184 | if (wpa_driver_nl80211_set_gen_ie(drv, params->wpa_ie, params->wpa_ie_len) | |
2185 | < 0) | |
2186 | ret = -1; | |
2187 | if (params->wpa_ie == NULL || params->wpa_ie_len == 0) | |
2188 | value = IW_AUTH_WPA_VERSION_DISABLED; | |
2189 | else if (params->wpa_ie[0] == WLAN_EID_RSN) | |
2190 | value = IW_AUTH_WPA_VERSION_WPA2; | |
2191 | else | |
2192 | value = IW_AUTH_WPA_VERSION_WPA; | |
2193 | if (wpa_driver_nl80211_set_auth_param(drv, | |
2194 | IW_AUTH_WPA_VERSION, value) < 0) | |
2195 | ret = -1; | |
2196 | value = wpa_driver_nl80211_cipher2wext(params->pairwise_suite); | |
2197 | if (wpa_driver_nl80211_set_auth_param(drv, | |
2198 | IW_AUTH_CIPHER_PAIRWISE, value) < 0) | |
2199 | ret = -1; | |
2200 | value = wpa_driver_nl80211_cipher2wext(params->group_suite); | |
2201 | if (wpa_driver_nl80211_set_auth_param(drv, | |
2202 | IW_AUTH_CIPHER_GROUP, value) < 0) | |
2203 | ret = -1; | |
2204 | value = wpa_driver_nl80211_keymgmt2wext(params->key_mgmt_suite); | |
2205 | if (wpa_driver_nl80211_set_auth_param(drv, | |
2206 | IW_AUTH_KEY_MGMT, value) < 0) | |
2207 | ret = -1; | |
2208 | value = params->key_mgmt_suite != KEY_MGMT_NONE || | |
2209 | params->pairwise_suite != CIPHER_NONE || | |
2210 | params->group_suite != CIPHER_NONE || | |
2211 | params->wpa_ie_len; | |
2212 | if (wpa_driver_nl80211_set_auth_param(drv, | |
2213 | IW_AUTH_PRIVACY_INVOKED, value) < 0) | |
2214 | ret = -1; | |
2215 | ||
2216 | /* Allow unencrypted EAPOL messages even if pairwise keys are set when | |
2217 | * not using WPA. IEEE 802.1X specifies that these frames are not | |
2218 | * encrypted, but WPA encrypts them when pairwise keys are in use. */ | |
2219 | if (params->key_mgmt_suite == KEY_MGMT_802_1X || | |
2220 | params->key_mgmt_suite == KEY_MGMT_PSK) | |
2221 | allow_unencrypted_eapol = 0; | |
2222 | else | |
2223 | allow_unencrypted_eapol = 1; | |
2224 | ||
2225 | if (wpa_driver_nl80211_set_auth_param(drv, | |
2226 | IW_AUTH_RX_UNENCRYPTED_EAPOL, | |
2227 | allow_unencrypted_eapol) < 0) | |
2228 | ret = -1; | |
2229 | if (params->freq && wpa_driver_nl80211_set_freq(drv, params->freq) < 0) | |
2230 | ret = -1; | |
2231 | if (wpa_driver_nl80211_set_ssid(drv, params->ssid, params->ssid_len) < 0) | |
2232 | ret = -1; | |
2233 | if (params->bssid && | |
2234 | wpa_driver_nl80211_set_bssid(drv, params->bssid) < 0) | |
2235 | ret = -1; | |
2236 | ||
2237 | return ret; | |
2238 | } | |
c2a04078 JM |
2239 | #endif /* WEXT_COMPAT */ |
2240 | ||
2241 | ||
2242 | static int wpa_driver_nl80211_authenticate( | |
2243 | void *priv, struct wpa_driver_auth_params *params) | |
2244 | { | |
2245 | struct wpa_driver_nl80211_data *drv = priv; | |
2246 | int ret = -1; | |
2247 | struct nl_msg *msg; | |
2248 | enum nl80211_auth_type type; | |
2249 | ||
2250 | drv->associated = 0; | |
2251 | ||
2252 | msg = nlmsg_alloc(); | |
2253 | if (!msg) | |
2254 | return -1; | |
2255 | ||
2256 | wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)", | |
2257 | drv->ifindex); | |
2258 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, | |
2259 | NL80211_CMD_AUTHENTICATE, 0); | |
2260 | ||
2261 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
2262 | if (params->bssid) { | |
2263 | wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, | |
2264 | MAC2STR(params->bssid)); | |
2265 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); | |
2266 | } | |
2267 | if (params->freq) { | |
2268 | wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); | |
2269 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); | |
2270 | } | |
2271 | if (params->ssid) { | |
2272 | wpa_hexdump_ascii(MSG_DEBUG, " * SSID", | |
2273 | params->ssid, params->ssid_len); | |
2274 | NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, | |
2275 | params->ssid); | |
2276 | } | |
2277 | wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len); | |
2278 | if (params->ie) | |
2279 | NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie); | |
2280 | /* | |
2281 | * TODO: if multiple auth_alg options enabled, try them one by one if | |
2282 | * the AP rejects authentication due to unknown auth alg | |
2283 | */ | |
2284 | if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM) | |
2285 | type = NL80211_AUTHTYPE_OPEN_SYSTEM; | |
2286 | else if (params->auth_alg & AUTH_ALG_SHARED_KEY) | |
2287 | type = NL80211_AUTHTYPE_SHARED_KEY; | |
2288 | else if (params->auth_alg & AUTH_ALG_LEAP) | |
2289 | type = NL80211_AUTHTYPE_NETWORK_EAP; | |
2290 | else if (params->auth_alg & AUTH_ALG_FT) | |
2291 | type = NL80211_AUTHTYPE_FT; | |
2292 | else | |
2293 | goto nla_put_failure; | |
2294 | wpa_printf(MSG_DEBUG, " * Auth Type %d", type); | |
2295 | NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type); | |
2296 | ||
2297 | ret = send_and_recv_msgs(drv, msg, NULL, NULL); | |
2298 | msg = NULL; | |
2299 | if (ret) { | |
2300 | wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d " | |
2301 | "(%s)", ret, strerror(-ret)); | |
2302 | goto nla_put_failure; | |
2303 | } | |
2304 | ret = 0; | |
2305 | wpa_printf(MSG_DEBUG, "nl80211: Authentication request send " | |
2306 | "successfully"); | |
2307 | ||
2308 | nla_put_failure: | |
2309 | nlmsg_free(msg); | |
2310 | return ret; | |
2311 | } | |
2312 | ||
2313 | ||
2314 | static int wpa_driver_nl80211_associate( | |
2315 | void *priv, struct wpa_driver_associate_params *params) | |
2316 | { | |
2317 | struct wpa_driver_nl80211_data *drv = priv; | |
2318 | int ret = -1; | |
2319 | struct nl_msg *msg; | |
2320 | ||
36b15723 JM |
2321 | wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, |
2322 | params->drop_unencrypted); | |
2323 | ||
c2a04078 JM |
2324 | #ifdef WEXT_COMPAT |
2325 | if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) | |
2326 | return wpa_driver_nl80211_associate_wext(drv, params); | |
2327 | #endif /* WEXT_COMPAT */ | |
2328 | ||
2329 | drv->associated = 0; | |
2330 | ||
2331 | msg = nlmsg_alloc(); | |
2332 | if (!msg) | |
2333 | return -1; | |
2334 | ||
2335 | wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)", | |
2336 | drv->ifindex); | |
2337 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, | |
2338 | NL80211_CMD_ASSOCIATE, 0); | |
2339 | ||
2340 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
2341 | if (params->bssid) { | |
2342 | wpa_printf(MSG_DEBUG, " * bssid=" MACSTR, | |
2343 | MAC2STR(params->bssid)); | |
2344 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid); | |
2345 | } | |
2346 | if (params->freq) { | |
2347 | wpa_printf(MSG_DEBUG, " * freq=%d", params->freq); | |
2348 | NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq); | |
2349 | } | |
2350 | if (params->ssid) { | |
2351 | wpa_hexdump_ascii(MSG_DEBUG, " * SSID", | |
2352 | params->ssid, params->ssid_len); | |
2353 | NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len, | |
2354 | params->ssid); | |
fd05d64e JM |
2355 | if (params->ssid_len > sizeof(drv->ssid)) |
2356 | goto nla_put_failure; | |
2357 | os_memcpy(drv->ssid, params->ssid, params->ssid_len); | |
2358 | drv->ssid_len = params->ssid_len; | |
c2a04078 JM |
2359 | } |
2360 | wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len); | |
2361 | if (params->wpa_ie) | |
2362 | NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len, | |
2363 | params->wpa_ie); | |
2364 | ||
2365 | ret = send_and_recv_msgs(drv, msg, NULL, NULL); | |
2366 | msg = NULL; | |
2367 | if (ret) { | |
2368 | wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d " | |
2369 | "(%s)", ret, strerror(-ret)); | |
2370 | goto nla_put_failure; | |
2371 | } | |
2372 | ret = 0; | |
2373 | wpa_printf(MSG_DEBUG, "nl80211: Association request send " | |
2374 | "successfully"); | |
2375 | ||
2376 | nla_put_failure: | |
2377 | nlmsg_free(msg); | |
2378 | return ret; | |
2379 | } | |
3f5285e8 JM |
2380 | |
2381 | ||
2382 | /** | |
2383 | * wpa_driver_nl80211_set_mode - Set wireless mode (infra/adhoc), SIOCSIWMODE | |
36b15723 | 2384 | * @drv: Pointer to private driver data from wpa_driver_nl80211_init() |
3f5285e8 JM |
2385 | * @mode: 0 = infra/BSS (associate with an AP), 1 = adhoc/IBSS |
2386 | * Returns: 0 on success, -1 on failure | |
2387 | */ | |
36b15723 JM |
2388 | static int wpa_driver_nl80211_set_mode(struct wpa_driver_nl80211_data *drv, |
2389 | int mode) | |
3f5285e8 | 2390 | { |
3f5285e8 JM |
2391 | int ret = -1, flags; |
2392 | struct nl_msg *msg; | |
2393 | ||
2394 | msg = nlmsg_alloc(); | |
2395 | if (!msg) | |
2396 | return -1; | |
2397 | ||
2398 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, | |
2399 | 0, NL80211_CMD_SET_INTERFACE, 0); | |
2400 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
0a4e6cbf JM |
2401 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, |
2402 | mode ? NL80211_IFTYPE_ADHOC : NL80211_IFTYPE_STATION); | |
3f5285e8 | 2403 | |
6241fcb1 JM |
2404 | ret = send_and_recv_msgs(drv, msg, NULL, NULL); |
2405 | if (!ret) | |
2406 | return 0; | |
2407 | else | |
3f5285e8 JM |
2408 | goto try_again; |
2409 | ||
3f5285e8 | 2410 | nla_put_failure: |
a87c9d96 JM |
2411 | wpa_printf(MSG_ERROR, "nl80211: Failed to set interface mode: %d (%s)", |
2412 | ret, strerror(-ret)); | |
3f5285e8 JM |
2413 | return -1; |
2414 | ||
2415 | try_again: | |
2416 | /* mac80211 doesn't allow mode changes while the device is up, so | |
2417 | * take the device down, try to set the mode again, and bring the | |
2418 | * device back up. | |
2419 | */ | |
2420 | if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) { | |
2421 | (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP); | |
2422 | ||
2423 | /* Try to set the mode again while the interface is down */ | |
6241fcb1 JM |
2424 | msg = nlmsg_alloc(); |
2425 | if (!msg) | |
2426 | return -1; | |
2427 | ||
2428 | genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, | |
2429 | 0, NL80211_CMD_SET_INTERFACE, 0); | |
2430 | NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); | |
2431 | NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, | |
2432 | mode ? NL80211_IFTYPE_ADHOC : | |
2433 | NL80211_IFTYPE_STATION); | |
2434 | ret = send_and_recv_msgs(drv, msg, NULL, NULL); | |
2435 | if (ret) { | |
3f5285e8 | 2436 | wpa_printf(MSG_ERROR, "Failed to set interface %s " |
a87c9d96 JM |
2437 | "mode(try_again): %d (%s)", |
2438 | drv->ifname, ret, strerror(-ret)); | |
6241fcb1 | 2439 | } |
3f5285e8 JM |
2440 | |
2441 | /* Ignore return value of get_ifflags to ensure that the device | |
2442 | * is always up like it was before this function was called. | |
2443 | */ | |
2444 | (void) wpa_driver_nl80211_get_ifflags(drv, &flags); | |
2445 | (void) wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP); | |
2446 | } | |
2447 | ||
3f5285e8 JM |
2448 | return ret; |
2449 | } | |
2450 | ||
2451 | ||
f555b6de JM |
2452 | #ifdef WEXT_COMPAT |
2453 | ||
3f5285e8 JM |
2454 | static int wpa_driver_nl80211_pmksa(struct wpa_driver_nl80211_data *drv, |
2455 | u32 cmd, const u8 *bssid, const u8 *pmkid) | |
2456 | { | |
2457 | struct iwreq iwr; | |
2458 | struct iw_pmksa pmksa; | |
2459 | int ret = 0; | |
2460 | ||
2461 | os_memset(&iwr, 0, sizeof(iwr)); | |
2462 | os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); | |
2463 | os_memset(&pmksa, 0, sizeof(pmksa)); | |
2464 | pmksa.cmd = cmd; | |
2465 | pmksa.bssid.sa_family = ARPHRD_ETHER; | |
2466 | if (bssid) | |
2467 | os_memcpy(pmksa.bssid.sa_data, bssid, ETH_ALEN); | |
2468 | if (pmkid) | |
2469 | os_memcpy(pmksa.pmkid, pmkid, IW_PMKID_LEN); | |
2470 | iwr.u.data.pointer = (caddr_t) &pmksa; | |
2471 | iwr.u.data.length = sizeof(pmksa); | |
2472 | ||
2473 | if (ioctl(drv->ioctl_sock, SIOCSIWPMKSA, &iwr) < 0) { | |
2474 | if (errno != EOPNOTSUPP) | |
2475 | perror("ioctl[SIOCSIWPMKSA]"); | |
2476 | ret = -1; | |
2477 | } | |
2478 | ||
2479 | return ret; | |
2480 | } | |
2481 | ||
2482 | ||
2483 | static int wpa_driver_nl80211_add_pmkid(void *priv, const u8 *bssid, | |
2484 | const u8 *pmkid) | |
2485 | { | |
2486 | struct wpa_driver_nl80211_data *drv = priv; | |
2487 | return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_ADD, bssid, pmkid); | |
2488 | } | |
2489 | ||
2490 | ||
2491 | static int wpa_driver_nl80211_remove_pmkid(void *priv, const u8 *bssid, | |
2492 | const u8 *pmkid) | |
2493 | { | |
2494 | struct wpa_driver_nl80211_data *drv = priv; | |
2495 | return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_REMOVE, bssid, pmkid); | |
2496 | } | |
2497 | ||
2498 | ||
2499 | static int wpa_driver_nl80211_flush_pmkid(void *priv) | |
2500 | { | |
2501 | struct wpa_driver_nl80211_data *drv = priv; | |
2502 | return wpa_driver_nl80211_pmksa(drv, IW_PMKSA_FLUSH, NULL, NULL); | |
2503 | } | |
2504 | ||
f555b6de JM |
2505 | #endif /* WEXT_COMPAT */ |
2506 | ||
3f5285e8 JM |
2507 | |
2508 | static int wpa_driver_nl80211_get_capa(void *priv, | |
2509 | struct wpa_driver_capa *capa) | |
2510 | { | |
2511 | struct wpa_driver_nl80211_data *drv = priv; | |
2512 | if (!drv->has_capability) | |
2513 | return -1; | |
2514 | os_memcpy(capa, &drv->capa, sizeof(*capa)); | |
2515 | return 0; | |
2516 | } | |
2517 | ||
2518 | ||
2519 | static int wpa_driver_nl80211_set_operstate(void *priv, int state) | |
2520 | { | |
2521 | struct wpa_driver_nl80211_data *drv = priv; | |
2522 | ||
2523 | wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)", | |
2524 | __func__, drv->operstate, state, state ? "UP" : "DORMANT"); | |
2525 | drv->operstate = state; | |
2526 | return wpa_driver_nl80211_send_oper_ifla( | |
2527 | drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT); | |
2528 | } | |
2529 | ||
2530 | ||
2531 | const struct wpa_driver_ops wpa_driver_nl80211_ops = { | |
2532 | .name = "nl80211", | |
2533 | .desc = "Linux nl80211/cfg80211", | |
2534 | .get_bssid = wpa_driver_nl80211_get_bssid, | |
2535 | .get_ssid = wpa_driver_nl80211_get_ssid, | |
3f5285e8 | 2536 | .set_key = wpa_driver_nl80211_set_key, |
6a1063e0 | 2537 | .scan2 = wpa_driver_nl80211_scan, |
3f5285e8 JM |
2538 | .get_scan_results2 = wpa_driver_nl80211_get_scan_results, |
2539 | .deauthenticate = wpa_driver_nl80211_deauthenticate, | |
2540 | .disassociate = wpa_driver_nl80211_disassociate, | |
c2a04078 | 2541 | .authenticate = wpa_driver_nl80211_authenticate, |
3f5285e8 | 2542 | .associate = wpa_driver_nl80211_associate, |
3f5285e8 JM |
2543 | .init = wpa_driver_nl80211_init, |
2544 | .deinit = wpa_driver_nl80211_deinit, | |
3f5285e8 JM |
2545 | .get_capa = wpa_driver_nl80211_get_capa, |
2546 | .set_operstate = wpa_driver_nl80211_set_operstate, | |
6d158490 | 2547 | .set_country = wpa_driver_nl80211_set_country, |
c2a04078 JM |
2548 | #ifdef WEXT_COMPAT |
2549 | .set_wpa = wpa_driver_nl80211_set_wpa, | |
2550 | .set_countermeasures = wpa_driver_nl80211_set_countermeasures, | |
f555b6de JM |
2551 | .add_pmkid = wpa_driver_nl80211_add_pmkid, |
2552 | .remove_pmkid = wpa_driver_nl80211_remove_pmkid, | |
2553 | .flush_pmkid = wpa_driver_nl80211_flush_pmkid, | |
c2a04078 | 2554 | #endif /* WEXT_COMPAT */ |
3f5285e8 | 2555 | }; |