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Set state to COMPLETE when AP mode has been initialized successfully
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
CommitLineData
3f5285e8 1/*
c5121837 2 * Driver interaction with Linux nl80211/cfg80211
072ad14c
JM		 3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009, Atheros Communications
3f5285e8
JM		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * Alternatively, this software may be distributed under the terms of BSD
14 * license.
15 *
16 * See README and COPYING for more details.
17 */
18
19#include "includes.h"
20#include <sys/ioctl.h>
21#include <net/if_arp.h>
37b7d082 22#include <net/if.h>
3f5285e8
JM		 23#include <netlink/genl/genl.h>
24#include <netlink/genl/family.h>
25#include <netlink/genl/ctrl.h>
7e45830a 26#include "nl80211_copy.h"
37b7d082 27#ifndef NO_WEXT
3f5285e8 28#include "wireless_copy.h"
37b7d082 29#endif /* NO_WEXT */
625f587b 30
3f5285e8
JM		 31#include "common.h"
32#include "driver.h"
33#include "eloop.h"
34#include "ieee802_11_defs.h"
35
c5121837 36#if defined(CONFIG_AP) || defined(HOSTAPD)
0915d02c
JM		 37#include <netpacket/packet.h>
38#include <linux/filter.h>
39#include "radiotap.h"
40#include "radiotap_iter.h"
c5121837 41
4b9841d3 42#include "../../hostapd/hostapd_defs.h"
a8d6ffa4 43#include "../../hostapd/sta_flags.h"
4b9841d3 44#endif /* CONFIG_AP || HOSTAPD */
0915d02c 45
c5121837 46#ifdef HOSTAPD
c5121837
JM		 47#include "ieee802_11_common.h"
48
49#ifdef CONFIG_LIBNL20
50/* libnl 2.0 compatibility code */
51#define nl_handle_alloc_cb nl_socket_alloc_cb
52#define nl_handle_destroy nl_socket_free
53#endif /* CONFIG_LIBNL20 */
54
55#endif /* HOSTAPD */
56
57
3f5285e8
JM		 58#ifndef IFF_LOWER_UP
59#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
60#endif
61#ifndef IFF_DORMANT
62#define IFF_DORMANT 0x20000 /* driver signals dormant */
63#endif
64
65#ifndef IF_OPER_DORMANT
66#define IF_OPER_DORMANT 5
67#endif
68#ifndef IF_OPER_UP
69#define IF_OPER_UP 6
70#endif
71
c5121837
JM		 72struct i802_bss {
73 struct i802_bss *next;
b4fd6fab 74 int ifindex;
c5121837
JM		 75 unsigned int beacon_set:1;
76};
3f5285e8
JM		 77
78struct wpa_driver_nl80211_data {
79 void *ctx;
d8816397 80 int link_event_sock;
c5121837 81 int ioctl_sock; /* socket for ioctl() use */
3f5285e8
JM		 82 char ifname[IFNAMSIZ + 1];
83 int ifindex;
7524cfb1 84 int if_removed;
c2a04078
JM		 85 struct wpa_driver_capa capa;
86 int has_capability;
c2a04078 87
3f5285e8
JM		 88 int operstate;
89
3f5285e8
JM		 90 int scan_complete_events;
91
92 struct nl_handle *nl_handle;
93 struct nl_cache *nl_cache;
94 struct nl_cb *nl_cb;
95 struct genl_family *nl80211;
1c873584 96
c2a04078
JM		 97 u8 bssid[ETH_ALEN];
98 int associated;
fd05d64e
JM		 99 u8 ssid[32];
100 size_t ssid_len;
ad1e68e6
JM		 101 int nlmode;
102 int ap_scan_as_station;
d2440ba0 103
d2440ba0 104 int beacon_int;
0915d02c
JM		 105 int monitor_sock;
106 int monitor_ifidx;
7da3abe7
JM		 107
108#ifdef CONFIG_AP
109 unsigned int beacon_set:1;
d2440ba0 110#endif /* CONFIG_AP */
c5121837
JM		 111
112#ifdef HOSTAPD
c5121837 113 int eapol_sock; /* socket for EAPOL frames */
c5121837
JM		 114
115 int default_if_indices[16];
116 int *if_indices;
117 int num_if_indices;
118
c5121837 119 struct i802_bss bss;
c5121837
JM		 120
121 int last_freq;
122 int last_freq_ht;
c5121837 123#endif /* HOSTAPD */
3f5285e8
JM		 124};
125
126
127static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
128 void *timeout_ctx);
ad1e68e6 129static int wpa_driver_nl80211_set_mode(void *priv, int mode);
362f781e 130static int
7524cfb1
JM		 131wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
132
460456f8
JM		 133#if defined(CONFIG_AP) || defined(HOSTAPD)
134static void nl80211_remove_monitor_interface(
135 struct wpa_driver_nl80211_data *drv);
136#endif /* CONFIG_AP || HOSTAPD */
137
0915d02c
JM		 138#ifdef CONFIG_AP
139static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
140 int ifidx);
141#endif /* CONFIG_AP */
142
072ad14c 143#ifdef HOSTAPD
2135f224
JM		 144static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
145static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
b4fd6fab
JM		 146static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
147 int ifindex);
bbaf0837
JM		 148static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
149 int ifidx);
150static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
072ad14c
JM		 151#endif /* HOSTAPD */
152
3f5285e8 153
6241fcb1
JM		 154/* nl80211 code */
155static int ack_handler(struct nl_msg *msg, void *arg)
156{
157 int *err = arg;
158 *err = 0;
159 return NL_STOP;
160}
161
162static int finish_handler(struct nl_msg *msg, void *arg)
163{
8e8df255
JM		 164 int *ret = arg;
165 *ret = 0;
6241fcb1
JM		 166 return NL_SKIP;
167}
168
169static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
170 void *arg)
171{
172 int *ret = arg;
173 *ret = err->error;
174 return NL_SKIP;
175}
176
5b7b85f6
JM		 177
178static int no_seq_check(struct nl_msg *msg, void *arg)
179{
180 return NL_OK;
181}
182
183
6241fcb1
JM		 184static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
185 struct nl_msg *msg,
186 int (*valid_handler)(struct nl_msg *, void *),
187 void *valid_data)
188{
189 struct nl_cb *cb;
190 int err = -ENOMEM;
191
192 cb = nl_cb_clone(drv->nl_cb);
193 if (!cb)
194 goto out;
195
196 err = nl_send_auto_complete(drv->nl_handle, msg);
197 if (err < 0)
198 goto out;
199
200 err = 1;
201
202 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
8e8df255 203 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
6241fcb1
JM		 204 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
205
206 if (valid_handler)
207 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
208 valid_handler, valid_data);
209
210 while (err > 0)
211 nl_recvmsgs(drv->nl_handle, cb);
212 out:
213 nl_cb_put(cb);
214 nlmsg_free(msg);
215 return err;
216}
217
218
97865538
JM		 219struct family_data {
220 const char *group;
221 int id;
222};
223
224
225static int family_handler(struct nl_msg *msg, void *arg)
226{
227 struct family_data *res = arg;
228 struct nlattr *tb[CTRL_ATTR_MAX + 1];
229 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
230 struct nlattr *mcgrp;
231 int i;
232
233 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
234 genlmsg_attrlen(gnlh, 0), NULL);
235 if (!tb[CTRL_ATTR_MCAST_GROUPS])
236 return NL_SKIP;
237
238 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
239 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
240 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
241 nla_len(mcgrp), NULL);
242 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
243 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
244 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
245 res->group,
246 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
247 continue;
248 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
249 break;
250 };
251
252 return NL_SKIP;
253}
254
255
256static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
257 const char *family, const char *group)
258{
259 struct nl_msg *msg;
260 int ret = -1;
261 struct family_data res = { group, -ENOENT };
262
263 msg = nlmsg_alloc();
264 if (!msg)
265 return -ENOMEM;
266 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
267 0, 0, CTRL_CMD_GETFAMILY, 0);
268 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
269
270 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
271 msg = NULL;
272 if (ret == 0)
273 ret = res.id;
274
275nla_put_failure:
276 nlmsg_free(msg);
277 return ret;
278}
279
280
41d931ee
JM		 281#ifdef HOSTAPD
282static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
283 const char *ifname, u8 *addr)
284{
285 struct ifreq ifr;
286
287 os_memset(&ifr, 0, sizeof(ifr));
288 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
289 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
290 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
291 ifname, errno, strerror(errno));
292 return -1;
293 }
294
295 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
296 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
297 ifname, ifr.ifr_hwaddr.sa_family);
298 return -1;
299 }
300 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
301
302 return 0;
303}
304
305
306static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
307 const char *ifname, const u8 *addr)
308{
309 struct ifreq ifr;
310
311 os_memset(&ifr, 0, sizeof(ifr));
312 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
313 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
314 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
315
316 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
317 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
318 ifname, errno, strerror(errno));
319 return -1;
320 }
321
322 return 0;
323}
324#endif /* HOSTAPD */
325
326
c811d5bc
JM		 327#ifndef HOSTAPD
328
3f5285e8
JM		 329static int wpa_driver_nl80211_send_oper_ifla(
330 struct wpa_driver_nl80211_data *drv,
331 int linkmode, int operstate)
332{
333 struct {
334 struct nlmsghdr hdr;
335 struct ifinfomsg ifinfo;
336 char opts[16];
337 } req;
338 struct rtattr *rta;
339 static int nl_seq;
340 ssize_t ret;
341
342 os_memset(&req, 0, sizeof(req));
343
344 req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
345 req.hdr.nlmsg_type = RTM_SETLINK;
346 req.hdr.nlmsg_flags = NLM_F_REQUEST;
347 req.hdr.nlmsg_seq = ++nl_seq;
348 req.hdr.nlmsg_pid = 0;
349
350 req.ifinfo.ifi_family = AF_UNSPEC;
351 req.ifinfo.ifi_type = 0;
352 req.ifinfo.ifi_index = drv->ifindex;
353 req.ifinfo.ifi_flags = 0;
354 req.ifinfo.ifi_change = 0;
355
356 if (linkmode != -1) {
357 rta = (struct rtattr *)
358 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
359 rta->rta_type = IFLA_LINKMODE;
360 rta->rta_len = RTA_LENGTH(sizeof(char));
361 *((char *) RTA_DATA(rta)) = linkmode;
362 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
363 RTA_LENGTH(sizeof(char));
364 }
365 if (operstate != -1) {
366 rta = (struct rtattr *)
367 ((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len));
368 rta->rta_type = IFLA_OPERSTATE;
369 rta->rta_len = RTA_LENGTH(sizeof(char));
370 *((char *) RTA_DATA(rta)) = operstate;
371 req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
372 RTA_LENGTH(sizeof(char));
373 }
374
7da3abe7 375 wpa_printf(MSG_DEBUG, "nl80211: Operstate: linkmode=%d, operstate=%d",
3f5285e8
JM		 376 linkmode, operstate);
377
d8816397 378 ret = send(drv->link_event_sock, &req, req.hdr.nlmsg_len, 0);
3f5285e8 379 if (ret < 0) {
7da3abe7
JM		 380 wpa_printf(MSG_DEBUG, "nl80211: Sending operstate IFLA failed:"
381 " %s (assume operstate is not supported)",
3f5285e8
JM		 382 strerror(errno));
383 }
384
385 return ret < 0 ? -1 : 0;
386}
387
388
37b7d082 389#ifndef NO_WEXT
3f5285e8
JM		 390static int wpa_driver_nl80211_set_auth_param(
391 struct wpa_driver_nl80211_data *drv, int idx, u32 value)
392{
393 struct iwreq iwr;
394 int ret = 0;
395
396 os_memset(&iwr, 0, sizeof(iwr));
397 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
398 iwr.u.param.flags = idx & IW_AUTH_INDEX;
399 iwr.u.param.value = value;
400
401 if (ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr) < 0) {
402 if (errno != EOPNOTSUPP) {
403 wpa_printf(MSG_DEBUG, "WEXT: SIOCSIWAUTH(param %d "
404 "value 0x%x) failed: %s)",
405 idx, value, strerror(errno));
406 }
407 ret = errno == EOPNOTSUPP ? -2 : -1;
408 }
409
410 return ret;
411}
37b7d082 412#endif /* NO_WEXT */
3f5285e8
JM		 413
414
415static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
416{
417 struct wpa_driver_nl80211_data *drv = priv;
c2a04078
JM		 418 if (!drv->associated)
419 return -1;
420 os_memcpy(bssid, drv->bssid, ETH_ALEN);
421 return 0;
3f5285e8
JM		 422}
423
424
3f5285e8
JM		 425static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
426{
427 struct wpa_driver_nl80211_data *drv = priv;
fd05d64e
JM		 428 if (!drv->associated)
429 return -1;
430 os_memcpy(ssid, drv->ssid, drv->ssid_len);
431 return drv->ssid_len;
3f5285e8
JM		 432}
433
434
7524cfb1
JM		 435static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
436 void *ctx, char *buf, size_t len,
437 int del)
3f5285e8
JM		 438{
439 union wpa_event_data event;
440
441 os_memset(&event, 0, sizeof(event));
442 if (len > sizeof(event.interface_status.ifname))
443 len = sizeof(event.interface_status.ifname) - 1;
444 os_memcpy(event.interface_status.ifname, buf, len);
445 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
446 EVENT_INTERFACE_ADDED;
447
448 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
449 del ? "DEL" : "NEW",
450 event.interface_status.ifname,
451 del ? "removed" : "added");
452
7524cfb1
JM		 453 if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
454 if (del)
455 drv->if_removed = 1;
456 else
457 drv->if_removed = 0;
458 }
459
3f5285e8
JM		 460 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
461}
462
463
7524cfb1
JM		 464static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
465 struct nlmsghdr *h)
466{
467 struct ifinfomsg *ifi;
468 int attrlen, _nlmsg_len, rta_len;
469 struct rtattr *attr;
470
471 ifi = NLMSG_DATA(h);
472
473 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
474
475 attrlen = h->nlmsg_len - _nlmsg_len;
476 if (attrlen < 0)
477 return 0;
478
479 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
480
481 rta_len = RTA_ALIGN(sizeof(struct rtattr));
482 while (RTA_OK(attr, attrlen)) {
483 if (attr->rta_type == IFLA_IFNAME) {
484 if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
485 == 0)
486 return 1;
487 else
488 break;
489 }
490 attr = RTA_NEXT(attr, attrlen);
491 }
492
493 return 0;
494}
495
496
497static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
498 int ifindex, struct nlmsghdr *h)
499{
500 if (drv->ifindex == ifindex)
501 return 1;
502
503 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, h)) {
504 drv->ifindex = if_nametoindex(drv->ifname);
505 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
506 "interface");
507 wpa_driver_nl80211_finish_drv_init(drv);
508 return 1;
509 }
510
511 return 0;
512}
513
514
3f5285e8
JM		 515static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data *drv,
516 void *ctx, struct nlmsghdr *h,
517 size_t len)
518{
519 struct ifinfomsg *ifi;
520 int attrlen, _nlmsg_len, rta_len;
521 struct rtattr * attr;
522
523 if (len < sizeof(*ifi))
524 return;
525
526 ifi = NLMSG_DATA(h);
527
7524cfb1 528 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, h)) {
3f5285e8
JM		 529 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
530 ifi->ifi_index);
531 return;
532 }
533
534 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
535 "(%s%s%s%s)",
536 drv->operstate, ifi->ifi_flags,
537 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
538 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
539 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
540 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
541 /*
542 * Some drivers send the association event before the operup event--in
543 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
544 * fails. This will hit us when wpa_supplicant does not need to do
545 * IEEE 802.1X authentication
546 */
547 if (drv->operstate == 1 &&
548 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
549 !(ifi->ifi_flags & IFF_RUNNING))
550 wpa_driver_nl80211_send_oper_ifla(drv, -1, IF_OPER_UP);
551
552 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
553
554 attrlen = h->nlmsg_len - _nlmsg_len;
555 if (attrlen < 0)
556 return;
557
558 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
559
560 rta_len = RTA_ALIGN(sizeof(struct rtattr));
561 while (RTA_OK(attr, attrlen)) {
d8816397 562 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1
JM		 563 wpa_driver_nl80211_event_link(
564 drv, ctx,
565 ((char *) attr) + rta_len,
566 attr->rta_len - rta_len, 0);
3f5285e8
JM		 567 }
568 attr = RTA_NEXT(attr, attrlen);
569 }
570}
571
572
573static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data *drv,
574 void *ctx, struct nlmsghdr *h,
575 size_t len)
576{
577 struct ifinfomsg *ifi;
578 int attrlen, _nlmsg_len, rta_len;
579 struct rtattr * attr;
580
581 if (len < sizeof(*ifi))
582 return;
583
584 ifi = NLMSG_DATA(h);
585
586 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
587
588 attrlen = h->nlmsg_len - _nlmsg_len;
589 if (attrlen < 0)
590 return;
591
592 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
593
594 rta_len = RTA_ALIGN(sizeof(struct rtattr));
595 while (RTA_OK(attr, attrlen)) {
596 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1
JM		 597 wpa_driver_nl80211_event_link(
598 drv, ctx,
599 ((char *) attr) + rta_len,
600 attr->rta_len - rta_len, 1);
3f5285e8
JM		 601 }
602 attr = RTA_NEXT(attr, attrlen);
603 }
604}
605
606
d8816397 607static void wpa_driver_nl80211_event_receive_link(int sock, void *eloop_ctx,
97865538 608 void *sock_ctx)
3f5285e8
JM		 609{
610 char buf[8192];
611 int left;
612 struct sockaddr_nl from;
613 socklen_t fromlen;
614 struct nlmsghdr *h;
615 int max_events = 10;
616
617try_again:
618 fromlen = sizeof(from);
619 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
620 (struct sockaddr *) &from, &fromlen);
621 if (left < 0) {
622 if (errno != EINTR && errno != EAGAIN)
623 perror("recvfrom(netlink)");
624 return;
625 }
626
627 h = (struct nlmsghdr *) buf;
628 while (left >= (int) sizeof(*h)) {
629 int len, plen;
630
631 len = h->nlmsg_len;
632 plen = len - sizeof(*h);
633 if (len > left || plen < 0) {
634 wpa_printf(MSG_DEBUG, "Malformed netlink message: "
635 "len=%d left=%d plen=%d",
636 len, left, plen);
637 break;
638 }
639
640 switch (h->nlmsg_type) {
641 case RTM_NEWLINK:
642 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx, sock_ctx,
643 h, plen);
644 break;
645 case RTM_DELLINK:
646 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx, sock_ctx,
647 h, plen);
648 break;
649 }
650
651 len = NLMSG_ALIGN(len);
652 left -= len;
653 h = (struct nlmsghdr *) ((char *) h + len);
654 }
655
656 if (left > 0) {
657 wpa_printf(MSG_DEBUG, "%d extra bytes in the end of netlink "
658 "message", left);
659 }
660
661 if (--max_events > 0) {
662 /*
663 * Try to receive all events in one eloop call in order to
664 * limit race condition on cases where AssocInfo event, Assoc
665 * event, and EAPOL frames are received more or less at the
666 * same time. We want to process the event messages first
667 * before starting EAPOL processing.
668 */
669 goto try_again;
670 }
671}
672
673
c2a04078
JM		 674static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
675 const u8 *frame, size_t len)
676{
677 const struct ieee80211_mgmt *mgmt;
678 union wpa_event_data event;
679
680 mgmt = (const struct ieee80211_mgmt *) frame;
681 if (len < 24 + sizeof(mgmt->u.auth)) {
682 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
683 "frame");
684 return;
685 }
686
687 os_memset(&event, 0, sizeof(event));
688 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
689 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
690 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
691 if (len > 24 + sizeof(mgmt->u.auth)) {
692 event.auth.ies = mgmt->u.auth.variable;
693 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
694 }
695
696 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
697}
698
699
700static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
701 const u8 *frame, size_t len)
702{
703 const struct ieee80211_mgmt *mgmt;
704 union wpa_event_data event;
705 u16 status;
706
707 mgmt = (const struct ieee80211_mgmt *) frame;
708 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
709 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
710 "frame");
711 return;
712 }
713
714 status = le_to_host16(mgmt->u.assoc_resp.status_code);
715 if (status != WLAN_STATUS_SUCCESS) {
efa46078
JM		 716 os_memset(&event, 0, sizeof(event));
717 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
718 event.assoc_reject.resp_ies =
719 (u8 *) mgmt->u.assoc_resp.variable;
720 event.assoc_reject.resp_ies_len =
721 len - 24 - sizeof(mgmt->u.assoc_resp);
722 }
723 event.assoc_reject.status_code = status;
724
725 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
c2a04078
JM		 726 return;
727 }
728
729 drv->associated = 1;
730 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
731
732 os_memset(&event, 0, sizeof(event));
733 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
734 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
735 event.assoc_info.resp_ies_len =
efa46078 736 len - 24 - sizeof(mgmt->u.assoc_resp);
c2a04078
JM		 737 }
738
739 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
740}
741
742
da1fb17c
JM		 743static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
744 enum nl80211_commands cmd, struct nlattr *addr)
745{
746 union wpa_event_data event;
747 enum wpa_event_type ev;
748
749 if (nla_len(addr) != ETH_ALEN)
750 return;
751
752 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
753 cmd, MAC2STR((u8 *) nla_data(addr)));
754
755 if (cmd == NL80211_CMD_AUTHENTICATE)
756 ev = EVENT_AUTH_TIMED_OUT;
757 else if (cmd == NL80211_CMD_ASSOCIATE)
758 ev = EVENT_ASSOC_TIMED_OUT;
759 else
760 return;
761
762 os_memset(&event, 0, sizeof(event));
763 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
764 wpa_supplicant_event(drv->ctx, ev, &event);
765}
766
767
c2a04078 768static void mlme_event(struct wpa_driver_nl80211_data *drv,
da1fb17c
JM		 769 enum nl80211_commands cmd, struct nlattr *frame,
770 struct nlattr *addr, struct nlattr *timed_out)
c2a04078 771{
da1fb17c
JM		 772 if (timed_out && addr) {
773 mlme_timeout_event(drv, cmd, addr);
774 return;
775 }
776
c2a04078
JM		 777 if (frame == NULL) {
778 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
779 "data", cmd);
780 return;
781 }
782
783 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
784 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
785 nla_data(frame), nla_len(frame));
786
787 switch (cmd) {
788 case NL80211_CMD_AUTHENTICATE:
789 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
790 break;
791 case NL80211_CMD_ASSOCIATE:
792 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
793 break;
794 case NL80211_CMD_DEAUTHENTICATE:
795 drv->associated = 0;
796 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
797 break;
798 case NL80211_CMD_DISASSOCIATE:
799 drv->associated = 0;
800 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
801 break;
802 default:
803 break;
804 }
805}
806
5b7b85f6
JM		 807#endif /* HOSTAPD */
808
c2a04078 809
35583f3f
JM		 810static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
811 struct nlattr *tb[])
812{
813 union wpa_event_data data;
814
815 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
816 os_memset(&data, 0, sizeof(data));
817 if (tb[NL80211_ATTR_MAC]) {
818 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
819 nla_data(tb[NL80211_ATTR_MAC]),
820 nla_len(tb[NL80211_ATTR_MAC]));
ad1e68e6 821 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
35583f3f
JM		 822 }
823 if (tb[NL80211_ATTR_KEY_SEQ]) {
824 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
825 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
826 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
827 }
828 if (tb[NL80211_ATTR_KEY_TYPE]) {
829 enum nl80211_key_type key_type =
830 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
831 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
832 if (key_type == NL80211_KEYTYPE_PAIRWISE)
833 data.michael_mic_failure.unicast = 1;
834 } else
835 data.michael_mic_failure.unicast = 1;
836
837 if (tb[NL80211_ATTR_KEY_IDX]) {
838 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
839 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
840 }
841
842 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
843}
844
845
97865538
JM		 846static int process_event(struct nl_msg *msg, void *arg)
847{
848 struct wpa_driver_nl80211_data *drv = arg;
849 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
850 struct nlattr *tb[NL80211_ATTR_MAX + 1];
851
852 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
853 genlmsg_attrlen(gnlh, 0), NULL);
854
855 if (tb[NL80211_ATTR_IFINDEX]) {
856 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
857 if (ifindex != drv->ifindex) {
858 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
859 " for foreign interface (ifindex %d)",
860 gnlh->cmd, ifindex);
861 return NL_SKIP;
862 }
863 }
864
ad1e68e6
JM		 865 if (drv->ap_scan_as_station &&
866 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
867 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
868 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
869 drv->ap_scan_as_station = 0;
870 }
871
97865538
JM		 872 switch (gnlh->cmd) {
873 case NL80211_CMD_NEW_SCAN_RESULTS:
874 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
875 drv->scan_complete_events = 1;
876 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
877 drv->ctx);
878 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
879 break;
880 case NL80211_CMD_SCAN_ABORTED:
881 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
882 /*
883 * Need to indicate that scan results are available in order
884 * not to make wpa_supplicant stop its scanning.
885 */
886 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
887 drv->ctx);
888 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
889 break;
ad1e68e6 890#ifndef HOSTAPD
c2a04078
JM		 891 case NL80211_CMD_AUTHENTICATE:
892 case NL80211_CMD_ASSOCIATE:
893 case NL80211_CMD_DEAUTHENTICATE:
894 case NL80211_CMD_DISASSOCIATE:
da1fb17c
JM		 895 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
896 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
c2a04078 897 break;
5b7b85f6 898#endif /* HOSTAPD */
35583f3f
JM		 899 case NL80211_CMD_MICHAEL_MIC_FAILURE:
900 mlme_event_michael_mic_failure(drv, tb);
901 break;
97865538 902 default:
c2a04078
JM		 903 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
904 "(cmd=%d)", gnlh->cmd);
97865538
JM		 905 break;
906 }
907
908 return NL_SKIP;
909}
910
911
912static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
913 void *sock_ctx)
914{
915 struct nl_cb *cb;
916 struct wpa_driver_nl80211_data *drv = eloop_ctx;
917
918 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
919
920 cb = nl_cb_clone(drv->nl_cb);
921 if (!cb)
922 return;
923 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
924 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
925 nl_recvmsgs(drv->nl_handle, cb);
926 nl_cb_put(cb);
927}
928
929
2135f224
JM		 930static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
931 const char *ifname, int dev_up)
3f5285e8
JM		 932{
933 struct ifreq ifr;
934
2135f224
JM		 935 if (drv->ioctl_sock < 0)
936 return -1;
937
3f5285e8
JM		 938 os_memset(&ifr, 0, sizeof(ifr));
939 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
2135f224
JM		 940
941 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
3f5285e8 942 perror("ioctl[SIOCGIFFLAGS]");
2135f224
JM		 943 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
944 ifname);
3f5285e8
JM		 945 return -1;
946 }
3f5285e8 947
2135f224
JM		 948 if (dev_up) {
949 if (ifr.ifr_flags & IFF_UP)
950 return 0;
951 ifr.ifr_flags |= IFF_UP;
952 } else {
953 if (!(ifr.ifr_flags & IFF_UP))
954 return 0;
955 ifr.ifr_flags &= ~IFF_UP;
956 }
3f5285e8 957
2135f224
JM		 958 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
959 perror("ioctl[SIOCSIFFLAGS]");
3f5285e8
JM		 960 return -1;
961 }
3f5285e8 962
2135f224 963 return 0;
3f5285e8
JM		 964}
965
966
6d158490
LR		 967/**
968 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
969 * @priv: driver_nl80211 private data
970 * @alpha2_arg: country to which to switch to
971 * Returns: 0 on success, -1 on failure
972 *
973 * This asks nl80211 to set the regulatory domain for given
974 * country ISO / IEC alpha2.
975 */
976static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
977{
978 struct wpa_driver_nl80211_data *drv = priv;
979 char alpha2[3];
980 struct nl_msg *msg;
981
982 msg = nlmsg_alloc();
983 if (!msg)
e785c2ba 984 return -ENOMEM;
6d158490
LR		 985
986 alpha2[0] = alpha2_arg[0];
987 alpha2[1] = alpha2_arg[1];
988 alpha2[2] = '\0';
989
990 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
991 0, NL80211_CMD_REQ_SET_REG, 0);
992
993 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
994 if (send_and_recv_msgs(drv, msg, NULL, NULL))
995 return -EINVAL;
996 return 0;
997nla_put_failure:
998 return -EINVAL;
999}
1000
1001
bbaf0837 1002#ifndef HOSTAPD
80bc75f1
JM		 1003struct wiphy_info_data {
1004 int max_scan_ssids;
1581b38b 1005 int ap_supported;
80bc75f1
JM		 1006};
1007
1008
1009static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1010{
1011 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1012 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1013 struct wiphy_info_data *info = arg;
1014
1015 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1016 genlmsg_attrlen(gnlh, 0), NULL);
1017
1018 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1019 info->max_scan_ssids =
1020 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1021
1581b38b
JM		 1022 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1023 struct nlattr *nl_mode;
1024 int i;
1025 nla_for_each_nested(nl_mode,
1026 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1027 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1028 info->ap_supported = 1;
1029 break;
1030 }
1031 }
1032 }
1033
80bc75f1
JM		 1034 return NL_SKIP;
1035}
1036
1037
1038static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1039 struct wiphy_info_data *info)
1040{
1041 struct nl_msg *msg;
1042
1043 os_memset(info, 0, sizeof(*info));
1044 msg = nlmsg_alloc();
1045 if (!msg)
1046 return -1;
1047
1048 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1049 0, NL80211_CMD_GET_WIPHY, 0);
1050
1051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1052
1053 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1054 return 0;
1055 msg = NULL;
1056nla_put_failure:
1057 nlmsg_free(msg);
1058 return -1;
1059}
1060
1061
1062static void wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1063{
1064 struct wiphy_info_data info;
1065 if (wpa_driver_nl80211_get_info(drv, &info))
1066 return;
1067 drv->has_capability = 1;
1b2a72e8
JM		 1068 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1069 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1070 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1071 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1072 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1073 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1074 WPA_DRIVER_CAPA_ENC_WEP104 |
1075 WPA_DRIVER_CAPA_ENC_TKIP |
1076 WPA_DRIVER_CAPA_ENC_CCMP;
1077
80bc75f1 1078 drv->capa.max_scan_ssids = info.max_scan_ssids;
1581b38b
JM		 1079 if (info.ap_supported)
1080 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
80bc75f1 1081}
bbaf0837 1082#endif /* HOSTAPD */
80bc75f1
JM		 1083
1084
9fff9fdc
JM		 1085static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1086 void *ctx)
3f5285e8 1087{
9fff9fdc 1088 int ret;
3f5285e8 1089
9fff9fdc 1090 /* Initialize generic netlink and nl80211 */
3f5285e8
JM		 1091
1092 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1093 if (drv->nl_cb == NULL) {
1094 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1095 "callbacks");
1096 goto err1;
1097 }
1098
1099 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1100 if (drv->nl_handle == NULL) {
1101 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1102 "callbacks");
1103 goto err2;
1104 }
1105
1106 if (genl_connect(drv->nl_handle)) {
1107 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1108 "netlink");
1109 goto err3;
1110 }
1111
9fff9fdc
JM		 1112#ifdef CONFIG_LIBNL20
1113 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1114 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1115 "netlink cache");
1116 goto err3;
1117 }
1118#else /* CONFIG_LIBNL20 */
3f5285e8
JM		 1119 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1120 if (drv->nl_cache == NULL) {
1121 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1122 "netlink cache");
1123 goto err3;
1124 }
9fff9fdc
JM		 1125#endif /* CONFIG_LIBNL20 */
1126
3f5285e8
JM		 1127
1128 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1129 if (drv->nl80211 == NULL) {
1130 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1131 "found");
1132 goto err4;
1133 }
1134
97865538
JM		 1135 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1136 if (ret >= 0)
1137 ret = nl_socket_add_membership(drv->nl_handle, ret);
1138 if (ret < 0) {
1139 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1140 "membership for scan events: %d (%s)",
1141 ret, strerror(-ret));
1142 goto err4;
1143 }
c2a04078
JM		 1144
1145 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1146 if (ret >= 0)
1147 ret = nl_socket_add_membership(drv->nl_handle, ret);
c2a04078
JM		 1148 if (ret < 0) {
1149 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1150 "membership for mlme events: %d (%s)",
1151 ret, strerror(-ret));
1152 goto err4;
1153 }
c2a04078 1154
97865538
JM		 1155 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
1156 wpa_driver_nl80211_event_receive, drv, ctx);
1157
9fff9fdc
JM		 1158 return 0;
1159
1160err4:
1161 nl_cache_free(drv->nl_cache);
1162err3:
1163 nl_handle_destroy(drv->nl_handle);
1164err2:
1165 nl_cb_put(drv->nl_cb);
1166err1:
1167 return -1;
1168}
1169
1170
bbaf0837
JM		 1171static int wpa_driver_nl80211_init_link_events(
1172 struct wpa_driver_nl80211_data *drv)
1173{
1174#ifdef HOSTAPD
1175 return 0;
1176#else /* HOSTAPD */
1177 int s;
1178 struct sockaddr_nl local;
1179
1180 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1181 if (s < 0) {
1182 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
7af376e4 1183 return -1;
bbaf0837
JM		 1184 }
1185
1186 os_memset(&local, 0, sizeof(local));
1187 local.nl_family = AF_NETLINK;
1188 local.nl_groups = RTMGRP_LINK;
1189 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1190 perror("bind(netlink)");
1191 close(s);
1192 return -1;
1193 }
1194
1195 eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
7af376e4 1196 drv->ctx);
bbaf0837
JM		 1197 drv->link_event_sock = s;
1198
1199 return 0;
1200#endif /* HOSTAPD */
1201}
1202
1203
9fff9fdc
JM		 1204/**
1205 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1206 * @ctx: context to be used when calling wpa_supplicant functions,
1207 * e.g., wpa_supplicant_event()
1208 * @ifname: interface name, e.g., wlan0
1209 * Returns: Pointer to private data, %NULL on failure
1210 */
1211static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1212{
9fff9fdc
JM		 1213 struct wpa_driver_nl80211_data *drv;
1214
1215 drv = os_zalloc(sizeof(*drv));
1216 if (drv == NULL)
1217 return NULL;
1218 drv->ctx = ctx;
1219 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
9fff9fdc
JM		 1220 drv->monitor_ifidx = -1;
1221 drv->monitor_sock = -1;
bbaf0837
JM		 1222 drv->link_event_sock = -1;
1223 drv->ioctl_sock = -1;
9fff9fdc 1224
bbaf0837
JM		 1225 if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1226 os_free(drv);
1227 return NULL;
1228 }
9fff9fdc
JM		 1229
1230 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1231
3f5285e8
JM		 1232 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1233 if (drv->ioctl_sock < 0) {
1234 perror("socket(PF_INET,SOCK_DGRAM)");
bbaf0837 1235 goto failed;
3f5285e8
JM		 1236 }
1237
bbaf0837
JM		 1238 if (wpa_driver_nl80211_init_link_events(drv) ||
1239 wpa_driver_nl80211_finish_drv_init(drv))
1240 goto failed;
7524cfb1
JM		 1241
1242 return drv;
1243
bbaf0837
JM		 1244failed:
1245 if (drv->link_event_sock >= 0) {
1246 eloop_unregister_read_sock(drv->link_event_sock);
1247 close(drv->link_event_sock);
1248 }
1249 if (drv->ioctl_sock >= 0)
1250 close(drv->ioctl_sock);
1251
7524cfb1 1252 genl_family_put(drv->nl80211);
7524cfb1 1253 nl_cache_free(drv->nl_cache);
7524cfb1 1254 nl_handle_destroy(drv->nl_handle);
7524cfb1 1255 nl_cb_put(drv->nl_cb);
bbaf0837 1256
7524cfb1
JM		 1257 os_free(drv);
1258 return NULL;
1259}
1260
1261
362f781e 1262static int
7524cfb1
JM		 1263wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1264{
a87c9d96
JM		 1265 drv->ifindex = if_nametoindex(drv->ifname);
1266
bbaf0837 1267#ifndef HOSTAPD
ad1e68e6 1268 if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
a87c9d96
JM		 1269 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1270 "use managed mode");
1271 }
1272
2135f224
JM		 1273 if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1274 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1275 "UP", drv->ifname);
362f781e
JM		 1276 return -1;
1277 }
3f5285e8 1278
80bc75f1
JM		 1279 wpa_driver_nl80211_capa(drv);
1280
3f5285e8 1281 wpa_driver_nl80211_send_oper_ifla(drv, 1, IF_OPER_DORMANT);
bbaf0837 1282#endif /* HOSTAPD */
362f781e
JM		 1283
1284 return 0;
3f5285e8
JM		 1285}
1286
1287
bbaf0837
JM		 1288#ifdef HOSTAPD
1289static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1290{
1291 struct i802_bss *bss, *prev;
1292 bss = drv->bss.next;
1293 while (bss) {
1294 prev = bss;
1295 bss = bss->next;
1296 os_free(bss);
1297 }
1298}
1299#endif /* HOSTAPD */
1300
1301
8a27af5c
JM		 1302#if defined(CONFIG_AP) || defined(HOSTAPD)
1303static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1304{
1305 struct nl_msg *msg;
1306
1307 msg = nlmsg_alloc();
1308 if (!msg)
1309 return -ENOMEM;
1310
1311 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1312 0, NL80211_CMD_DEL_BEACON, 0);
1313 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1314
1315 return send_and_recv_msgs(drv, msg, NULL, NULL);
1316 nla_put_failure:
1317 return -ENOBUFS;
1318}
1319#endif /* CONFIG_AP || HOSTAPD */
1320
1321
3f5285e8 1322/**
7e5ba1b9
JM		 1323 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1324 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3f5285e8
JM		 1325 *
1326 * Shut down driver interface and processing of driver events. Free
1327 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1328 */
7e5ba1b9 1329static void wpa_driver_nl80211_deinit(void *priv)
3f5285e8
JM		 1330{
1331 struct wpa_driver_nl80211_data *drv = priv;
3f5285e8 1332
bbaf0837 1333#if defined(CONFIG_AP) || defined(HOSTAPD)
460456f8 1334 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 1335 if (drv->monitor_sock >= 0) {
1336 eloop_unregister_read_sock(drv->monitor_sock);
1337 close(drv->monitor_sock);
1338 }
8a27af5c
JM		 1339
1340 if (drv->nlmode == NL80211_IFTYPE_AP)
1341 wpa_driver_nl80211_del_beacon(drv);
bbaf0837 1342#endif /* CONFIG_AP || HOSTAPD */
0915d02c 1343
bbaf0837
JM		 1344#ifdef HOSTAPD
1345 if (drv->last_freq_ht) {
1346 /* Clear HT flags from the driver */
1347 struct hostapd_freq_params freq;
1348 os_memset(&freq, 0, sizeof(freq));
1349 freq.freq = drv->last_freq;
1350 i802_set_freq(priv, &freq);
1351 }
1352
bbaf0837
JM		 1353 if (drv->eapol_sock >= 0) {
1354 eloop_unregister_read_sock(drv->eapol_sock);
1355 close(drv->eapol_sock);
1356 }
1357
1358 if (drv->if_indices != drv->default_if_indices)
1359 os_free(drv->if_indices);
1360
1361 wpa_driver_nl80211_free_bss(drv);
1362#else /* HOSTAPD */
37b7d082 1363#ifndef NO_WEXT
36b15723 1364 wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED, 0);
37b7d082 1365#endif /* NO_WEXT */
3f5285e8
JM		 1366
1367 wpa_driver_nl80211_send_oper_ifla(priv, 0, IF_OPER_UP);
1368
bbaf0837
JM		 1369 if (drv->link_event_sock >= 0) {
1370 eloop_unregister_read_sock(drv->link_event_sock);
1371 close(drv->link_event_sock);
1372 }
1373#endif /* HOSTAPD */
3f5285e8 1374
bbaf0837
JM		 1375 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1376
1377 (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
ad1e68e6 1378 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
3f5285e8 1379
bbaf0837
JM		 1380 if (drv->ioctl_sock >= 0)
1381 close(drv->ioctl_sock);
3f5285e8 1382
97865538 1383 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
3f5285e8
JM		 1384 genl_family_put(drv->nl80211);
1385 nl_cache_free(drv->nl_cache);
1386 nl_handle_destroy(drv->nl_handle);
1387 nl_cb_put(drv->nl_cb);
1388
1389 os_free(drv);
1390}
1391
1392
1393/**
1394 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
ad1e68e6 1395 * @eloop_ctx: Driver private data
3f5285e8
JM		 1396 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1397 *
1398 * This function can be used as registered timeout when starting a scan to
1399 * generate a scan completed event if the driver does not report this.
1400 */
1401static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1402{
ad1e68e6
JM		 1403 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1404 if (drv->ap_scan_as_station) {
1405 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1406 drv->ap_scan_as_station = 0;
1407 }
3f5285e8
JM		 1408 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1409 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1410}
1411
1412
1413/**
1414 * wpa_driver_nl80211_scan - Request the driver to initiate scan
ad1e68e6 1415 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
6a1063e0 1416 * @params: Scan parameters
3f5285e8
JM		 1417 * Returns: 0 on success, -1 on failure
1418 */
6a1063e0
JM		 1419static int wpa_driver_nl80211_scan(void *priv,
1420 struct wpa_driver_scan_params *params)
3f5285e8
JM		 1421{
1422 struct wpa_driver_nl80211_data *drv = priv;
3f5285e8 1423 int ret = 0, timeout;
d3a98225 1424 struct nl_msg *msg, *ssids, *freqs;
6a1063e0 1425 size_t i;
3f5285e8 1426
0e75527f
JM		 1427 msg = nlmsg_alloc();
1428 ssids = nlmsg_alloc();
d3a98225
JM		 1429 freqs = nlmsg_alloc();
1430 if (!msg || !ssids || !freqs) {
0e75527f
JM		 1431 nlmsg_free(msg);
1432 nlmsg_free(ssids);
d3a98225 1433 nlmsg_free(freqs);
3f5285e8
JM		 1434 return -1;
1435 }
1436
0e75527f
JM		 1437 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1438 NL80211_CMD_TRIGGER_SCAN, 0);
1439
1440 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1441
6a1063e0
JM		 1442 for (i = 0; i < params->num_ssids; i++) {
1443 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1444 params->ssids[i].ssid);
3f5285e8 1445 }
6a1063e0
JM		 1446 if (params->num_ssids)
1447 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3f5285e8 1448
d173df52
JM		 1449 if (params->extra_ies) {
1450 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1451 params->extra_ies);
1452 }
1453
d3a98225
JM		 1454 if (params->freqs) {
1455 for (i = 0; params->freqs[i]; i++)
1456 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1457 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1458 }
1459
0e75527f
JM		 1460 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1461 msg = NULL;
1462 if (ret) {
1463 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1464 "(%s)", ret, strerror(-ret));
ad1e68e6
JM		 1465#ifdef HOSTAPD
1466 if (drv->nlmode == NL80211_IFTYPE_AP) {
1467 /*
1468 * mac80211 does not allow scan requests in AP mode, so
1469 * try to do this in station mode.
1470 */
1471 if (wpa_driver_nl80211_set_mode(drv,
1472 IEEE80211_MODE_INFRA))
1473 goto nla_put_failure;
1474
1475 if (wpa_driver_nl80211_scan(drv, params)) {
1476 wpa_driver_nl80211_set_mode(drv,
1477 IEEE80211_MODE_AP);
1478 goto nla_put_failure;
1479 }
1480
1481 /* Restore AP mode when processing scan results */
1482 drv->ap_scan_as_station = 1;
1483 ret = 0;
1484 } else
1485 goto nla_put_failure;
1486#else /* HOSTAPD */
0e75527f 1487 goto nla_put_failure;
ad1e68e6 1488#endif /* HOSTAPD */
3f5285e8
JM		 1489 }
1490
1491 /* Not all drivers generate "scan completed" wireless event, so try to
1492 * read results after a timeout. */
0e75527f 1493 timeout = 10;
3f5285e8
JM		 1494 if (drv->scan_complete_events) {
1495 /*
d173df52
JM		 1496 * The driver seems to deliver events to notify when scan is
1497 * complete, so use longer timeout to avoid race conditions
1498 * with scanning and following association request.
3f5285e8
JM		 1499 */
1500 timeout = 30;
1501 }
1502 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1503 "seconds", ret, timeout);
1504 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
0e75527f
JM		 1505 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1506 drv, drv->ctx);
3f5285e8 1507
0e75527f
JM		 1508nla_put_failure:
1509 nlmsg_free(ssids);
1510 nlmsg_free(msg);
d3a98225 1511 nlmsg_free(freqs);
3f5285e8
JM		 1512 return ret;
1513}
1514
1515
b3db1e1c 1516static int bss_info_handler(struct nl_msg *msg, void *arg)
3f5285e8 1517{
b3db1e1c
JM		 1518 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1519 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1520 struct nlattr *bss[NL80211_BSS_MAX + 1];
1521 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1522 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1523 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1524 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1525 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1526 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1527 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1528 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1529 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1530 };
1531 struct wpa_scan_results *res = arg;
3f5285e8
JM		 1532 struct wpa_scan_res **tmp;
1533 struct wpa_scan_res *r;
b3db1e1c
JM		 1534 const u8 *ie;
1535 size_t ie_len;
3f5285e8 1536
b3db1e1c
JM		 1537 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1538 genlmsg_attrlen(gnlh, 0), NULL);
1539 if (!tb[NL80211_ATTR_BSS])
1540 return NL_SKIP;
1541 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1542 bss_policy))
1543 return NL_SKIP;
1544 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1545 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1546 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1547 } else {
1548 ie = NULL;
1549 ie_len = 0;
1550 }
3f5285e8 1551
b3db1e1c 1552 r = os_zalloc(sizeof(*r) + ie_len);
3f5285e8 1553 if (r == NULL)
b3db1e1c
JM		 1554 return NL_SKIP;
1555 if (bss[NL80211_BSS_BSSID])
1556 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1557 ETH_ALEN);
1558 if (bss[NL80211_BSS_FREQUENCY])
1559 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1560 if (bss[NL80211_BSS_BEACON_INTERVAL])
1561 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1562 if (bss[NL80211_BSS_CAPABILITY])
1563 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
7c2849d2
JM		 1564 r->flags |= WPA_SCAN_NOISE_INVALID;
1565 if (bss[NL80211_BSS_SIGNAL_MBM]) {
b3db1e1c 1566 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
7c2849d2
JM		 1567 r->level /= 100; /* mBm to dBm */
1568 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1569 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1570 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1571 r->flags |= WPA_SCAN_LEVEL_INVALID;
1572 } else
1573 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
b3db1e1c
JM		 1574 if (bss[NL80211_BSS_TSF])
1575 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1576 r->ie_len = ie_len;
1577 if (ie)
1578 os_memcpy(r + 1, ie, ie_len);
3f5285e8
JM		 1579
1580 tmp = os_realloc(res->res,
1581 (res->num + 1) * sizeof(struct wpa_scan_res *));
1582 if (tmp == NULL) {
1583 os_free(r);
b3db1e1c 1584 return NL_SKIP;
3f5285e8
JM		 1585 }
1586 tmp[res->num++] = r;
1587 res->res = tmp;
b3db1e1c
JM		 1588
1589 return NL_SKIP;
3f5285e8 1590}
b3db1e1c 1591
3f5285e8
JM		 1592
1593/**
1594 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1595 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1596 * Returns: Scan results on success, -1 on failure
1597 */
7e5ba1b9
JM		 1598static struct wpa_scan_results *
1599wpa_driver_nl80211_get_scan_results(void *priv)
3f5285e8
JM		 1600{
1601 struct wpa_driver_nl80211_data *drv = priv;
b3db1e1c 1602 struct nl_msg *msg;
3f5285e8 1603 struct wpa_scan_results *res;
b3db1e1c 1604 int ret;
3f5285e8
JM		 1605
1606 res = os_zalloc(sizeof(*res));
b3db1e1c
JM		 1607 if (res == NULL)
1608 return 0;
1609 msg = nlmsg_alloc();
1610 if (!msg)
1611 goto nla_put_failure;
3f5285e8 1612
b3db1e1c
JM		 1613 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1614 NL80211_CMD_GET_SCAN, 0);
1615 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1616
b3db1e1c
JM		 1617 ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1618 msg = NULL;
1619 if (ret == 0) {
1620 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1621 (unsigned long) res->num);
1622 return res;
3f5285e8 1623 }
b3db1e1c
JM		 1624 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1625 "(%s)", ret, strerror(-ret));
1626nla_put_failure:
1627 nlmsg_free(msg);
1628 wpa_scan_results_free(res);
1629 return NULL;
3f5285e8
JM		 1630}
1631
1632
1ad1cdc2
JM		 1633static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
1634 wpa_alg alg, const u8 *addr, int key_idx, int set_tx,
1635 const u8 *seq, size_t seq_len,
1636 const u8 *key, size_t key_len)
3f5285e8 1637{
3f5285e8 1638 struct nl_msg *msg;
1ad1cdc2 1639 int ret;
3f5285e8 1640
1ad1cdc2
JM		 1641 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1642 "set_tx=%d seq_len=%lu key_len=%lu",
1643 __func__, ifindex, alg, addr, key_idx, set_tx,
3f5285e8
JM		 1644 (unsigned long) seq_len, (unsigned long) key_len);
1645
1646 msg = nlmsg_alloc();
1ad1cdc2
JM		 1647 if (!msg)
1648 return -ENOMEM;
3f5285e8
JM		 1649
1650 if (alg == WPA_ALG_NONE) {
1ad1cdc2
JM		 1651 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1652 0, NL80211_CMD_DEL_KEY, 0);
3f5285e8 1653 } else {
1ad1cdc2
JM		 1654 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1655 0, NL80211_CMD_NEW_KEY, 0);
3f5285e8
JM		 1656 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1657 switch (alg) {
1658 case WPA_ALG_WEP:
1659 if (key_len == 5)
1660 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1661 0x000FAC01);
1662 else
1663 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1664 0x000FAC05);
1665 break;
1666 case WPA_ALG_TKIP:
1667 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
1668 break;
1669 case WPA_ALG_CCMP:
1670 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
1671 break;
2e24a366
JM		 1672 case WPA_ALG_IGTK:
1673 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
1674 break;
3f5285e8 1675 default:
1ad1cdc2
JM		 1676 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1677 "algorithm %d", __func__, alg);
3f5285e8
JM		 1678 nlmsg_free(msg);
1679 return -1;
1680 }
1681 }
1682
1ad1cdc2
JM		 1683 if (seq)
1684 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1685
3f5285e8
JM		 1686 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1687 {
1688 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
1689 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1690 }
1691 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1ad1cdc2 1692 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3f5285e8 1693
1ad1cdc2
JM		 1694 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1695 if (ret == -ENOENT && alg == WPA_ALG_NONE)
1696 ret = 0;
1697 if (ret)
1698 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1699 ret, strerror(-ret));
3f5285e8 1700
1ad1cdc2
JM		 1701 /*
1702 * If we failed or don't need to set the default TX key (below),
1703 * we're done here.
1704 */
1705 if (ret || !set_tx || alg == WPA_ALG_NONE)
1706 return ret;
1707#ifdef HOSTAPD /* FIX: is this needed? */
1708 if (addr)
1709 return ret;
1710#endif /* HOSTAPD */
3f5285e8 1711
1ad1cdc2
JM		 1712 msg = nlmsg_alloc();
1713 if (!msg)
1714 return -ENOMEM;
3f5285e8 1715
1ad1cdc2
JM		 1716 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1717 0, NL80211_CMD_SET_KEY, 0);
1718 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1719 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1720 if (alg == WPA_ALG_IGTK)
1721 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1722 else
1723 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3f5285e8 1724
1ad1cdc2
JM		 1725 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1726 if (ret == -ENOENT)
1727 ret = 0;
1728 if (ret)
1729 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1730 "err=%d %s)", ret, strerror(-ret));
1731 return ret;
3f5285e8
JM		 1732
1733nla_put_failure:
6241fcb1 1734 return -ENOBUFS;
3f5285e8
JM		 1735}
1736
1737
c811d5bc
JM		 1738#ifndef HOSTAPD
1739
1ad1cdc2
JM		 1740static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
1741 const u8 *addr, int key_idx,
1742 int set_tx, const u8 *seq,
1743 size_t seq_len,
1744 const u8 *key, size_t key_len)
1745{
1746 struct wpa_driver_nl80211_data *drv = priv;
1747 return nl_set_encr(drv->ifindex, drv, alg, addr, key_idx, set_tx, seq,
1748 seq_len, key, key_len);
1749}
1750
1751
c2a04078
JM		 1752static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1753 const u8 *addr, int cmd, u16 reason_code)
1754{
1755 int ret = -1;
1756 struct nl_msg *msg;
1757
1758 msg = nlmsg_alloc();
1759 if (!msg)
1760 return -1;
1761
1762 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1763
1764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1765 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1766 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1767
1768 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1769 msg = NULL;
1770 if (ret) {
1771 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1772 "(%s)", ret, strerror(-ret));
1773 goto nla_put_failure;
1774 }
1775 ret = 0;
1776
1777nla_put_failure:
1778 nlmsg_free(msg);
1779 return ret;
1780}
3f5285e8
JM		 1781
1782
1783static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
c2a04078 1784 int reason_code)
3f5285e8
JM		 1785{
1786 struct wpa_driver_nl80211_data *drv = priv;
c2a04078 1787 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 1788 drv->associated = 0;
c2a04078
JM		 1789 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1790 reason_code);
3f5285e8
JM		 1791}
1792
1793
1794static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
c2a04078 1795 int reason_code)
3f5285e8
JM		 1796{
1797 struct wpa_driver_nl80211_data *drv = priv;
c2a04078 1798 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 1799 drv->associated = 0;
c2a04078
JM		 1800 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
1801 reason_code);
3f5285e8
JM		 1802}
1803
1804
c2a04078
JM		 1805static int wpa_driver_nl80211_authenticate(
1806 void *priv, struct wpa_driver_auth_params *params)
1807{
1808 struct wpa_driver_nl80211_data *drv = priv;
a0b2f99b 1809 int ret = -1, i;
c2a04078
JM		 1810 struct nl_msg *msg;
1811 enum nl80211_auth_type type;
1812
1813 drv->associated = 0;
1814
1815 msg = nlmsg_alloc();
1816 if (!msg)
1817 return -1;
1818
1819 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
1820 drv->ifindex);
a0b2f99b
JM		 1821
1822 for (i = 0; i < 4; i++) {
1823 if (!params->wep_key[i])
1824 continue;
1825 wpa_driver_nl80211_set_key(drv, WPA_ALG_WEP, NULL, i,
1826 i == params->wep_tx_keyidx, NULL, 0,
1827 params->wep_key[i],
1828 params->wep_key_len[i]);
1829 }
1830
c2a04078
JM		 1831 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1832 NL80211_CMD_AUTHENTICATE, 0);
1833
1834 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1835 if (params->bssid) {
1836 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
1837 MAC2STR(params->bssid));
1838 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
1839 }
1840 if (params->freq) {
1841 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
1842 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
1843 }
1844 if (params->ssid) {
1845 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
1846 params->ssid, params->ssid_len);
1847 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
1848 params->ssid);
1849 }
1850 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
1851 if (params->ie)
1852 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
1853 /*
1854 * TODO: if multiple auth_alg options enabled, try them one by one if
1855 * the AP rejects authentication due to unknown auth alg
1856 */
1857 if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
1858 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1859 else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
1860 type = NL80211_AUTHTYPE_SHARED_KEY;
1861 else if (params->auth_alg & AUTH_ALG_LEAP)
1862 type = NL80211_AUTHTYPE_NETWORK_EAP;
1863 else if (params->auth_alg & AUTH_ALG_FT)
1864 type = NL80211_AUTHTYPE_FT;
1865 else
1866 goto nla_put_failure;
1867 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
1868 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
1869
1870 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1871 msg = NULL;
1872 if (ret) {
1873 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1874 "(%s)", ret, strerror(-ret));
1875 goto nla_put_failure;
1876 }
1877 ret = 0;
1878 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
1879 "successfully");
1880
1881nla_put_failure:
1882 nlmsg_free(msg);
1883 return ret;
1884}
1885
c811d5bc
JM		 1886#endif /* HOSTAPD */
1887
c2a04078 1888
c3965310 1889#if defined(CONFIG_AP) || defined(HOSTAPD)
282d5590
JM		 1890
1891struct phy_info_arg {
1892 u16 *num_modes;
1893 struct hostapd_hw_modes *modes;
1894};
1895
1896static int phy_info_handler(struct nl_msg *msg, void *arg)
1897{
1898 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1899 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1900 struct phy_info_arg *phy_info = arg;
1901
1902 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1903
1904 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1905 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1906 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1907 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1908 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1909 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1910 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1911 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1912 };
1913
1914 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1915 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1916 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1917 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1918 };
1919
1920 struct nlattr *nl_band;
1921 struct nlattr *nl_freq;
1922 struct nlattr *nl_rate;
1923 int rem_band, rem_freq, rem_rate;
1924 struct hostapd_hw_modes *mode;
1925 int idx, mode_is_set;
1926
1927 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1928 genlmsg_attrlen(gnlh, 0), NULL);
1929
1930 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1931 return NL_SKIP;
1932
1933 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1934 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1935 if (!mode)
1936 return NL_SKIP;
1937 phy_info->modes = mode;
1938
1939 mode_is_set = 0;
1940
1941 mode = &phy_info->modes[*(phy_info->num_modes)];
1942 memset(mode, 0, sizeof(*mode));
1943 *(phy_info->num_modes) += 1;
1944
1945 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1946 nla_len(nl_band), NULL);
1947
1948 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
1949 mode->ht_capab = nla_get_u16(
1950 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
1951 }
1952
1953 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1954 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1955 nla_len(nl_freq), freq_policy);
1956 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1957 continue;
1958 mode->num_channels++;
1959 }
1960
1961 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1962 if (!mode->channels)
1963 return NL_SKIP;
1964
1965 idx = 0;
1966
1967 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1968 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1969 nla_len(nl_freq), freq_policy);
1970 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1971 continue;
1972
1973 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1974 mode->channels[idx].flag = 0;
1975
1976 if (!mode_is_set) {
1977 /* crude heuristic */
1978 if (mode->channels[idx].freq < 4000)
1979 mode->mode = HOSTAPD_MODE_IEEE80211B;
1980 else
1981 mode->mode = HOSTAPD_MODE_IEEE80211A;
1982 mode_is_set = 1;
1983 }
1984
1985 /* crude heuristic */
1986 if (mode->channels[idx].freq < 4000)
5a0ffb5f 1987 if (mode->channels[idx].freq == 2484)
282d5590
JM		 1988 mode->channels[idx].chan = 14;
1989 else
1990 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1991 else
1992 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1993
1994 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1995 mode->channels[idx].flag |=
1996 HOSTAPD_CHAN_DISABLED;
1997 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1998 mode->channels[idx].flag |=
1999 HOSTAPD_CHAN_PASSIVE_SCAN;
2000 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2001 mode->channels[idx].flag |=
2002 HOSTAPD_CHAN_NO_IBSS;
2003 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2004 mode->channels[idx].flag |=
2005 HOSTAPD_CHAN_RADAR;
2006
2007 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2008 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2009 mode->channels[idx].max_tx_power =
2010 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2011
2012 idx++;
2013 }
2014
2015 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2016 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2017 nla_len(nl_rate), rate_policy);
2018 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2019 continue;
2020 mode->num_rates++;
2021 }
2022
2023 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
2024 if (!mode->rates)
2025 return NL_SKIP;
2026
2027 idx = 0;
2028
2029 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2030 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2031 nla_len(nl_rate), rate_policy);
2032 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2033 continue;
2034 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2035
2036 /* crude heuristic */
2037 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2038 mode->rates[idx].rate > 200)
2039 mode->mode = HOSTAPD_MODE_IEEE80211G;
2040
2041 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
2042 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
2043
2044 idx++;
2045 }
2046 }
2047
2048 return NL_SKIP;
2049}
2050
2051static struct hostapd_hw_modes *
2052wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2053{
2054 u16 m;
2055 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2056 int i, mode11g_idx = -1;
2057
2058 /* If only 802.11g mode is included, use it to construct matching
2059 * 802.11b mode data. */
2060
2061 for (m = 0; m < *num_modes; m++) {
2062 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2063 return modes; /* 802.11b already included */
2064 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2065 mode11g_idx = m;
2066 }
2067
2068 if (mode11g_idx < 0)
2069 return modes; /* 2.4 GHz band not supported at all */
2070
2071 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2072 if (nmodes == NULL)
2073 return modes; /* Could not add 802.11b mode */
2074
2075 mode = &nmodes[*num_modes];
2076 os_memset(mode, 0, sizeof(*mode));
2077 (*num_modes)++;
2078 modes = nmodes;
2079
2080 mode->mode = HOSTAPD_MODE_IEEE80211B;
2081
2082 mode11g = &modes[mode11g_idx];
2083 mode->num_channels = mode11g->num_channels;
2084 mode->channels = os_malloc(mode11g->num_channels *
2085 sizeof(struct hostapd_channel_data));
2086 if (mode->channels == NULL) {
2087 (*num_modes)--;
2088 return modes; /* Could not add 802.11b mode */
2089 }
2090 os_memcpy(mode->channels, mode11g->channels,
2091 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2092
2093 mode->num_rates = 0;
2094 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
2095 if (mode->rates == NULL) {
2096 os_free(mode->channels);
2097 (*num_modes)--;
2098 return modes; /* Could not add 802.11b mode */
2099 }
2100
2101 for (i = 0; i < mode11g->num_rates; i++) {
2102 if (mode11g->rates[i].rate > 110 ||
2103 mode11g->rates[i].flags &
2104 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
2105 continue;
2106 mode->rates[mode->num_rates] = mode11g->rates[i];
2107 mode->num_rates++;
2108 if (mode->num_rates == 4)
2109 break;
2110 }
2111
2112 if (mode->num_rates == 0) {
2113 os_free(mode->channels);
2114 os_free(mode->rates);
2115 (*num_modes)--;
2116 return modes; /* No 802.11b rates */
2117 }
2118
2119 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2120 "information");
2121
2122 return modes;
2123}
2124
2125
2126static struct hostapd_hw_modes *
2127wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2128{
2129 struct wpa_driver_nl80211_data *drv = priv;
2130 struct nl_msg *msg;
2131 struct phy_info_arg result = {
2132 .num_modes = num_modes,
2133 .modes = NULL,
2134 };
2135
2136 *num_modes = 0;
2137 *flags = 0;
2138
2139 msg = nlmsg_alloc();
2140 if (!msg)
2141 return NULL;
2142
2143 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2144 0, NL80211_CMD_GET_WIPHY, 0);
2145
2146 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2147
2148 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2149 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2150 nla_put_failure:
2151 return NULL;
2152}
2153
2154
2c2010ac
JM		 2155static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2156 const void *data, size_t len,
2157 int encrypt)
2158{
2159 __u8 rtap_hdr[] = {
2160 0x00, 0x00, /* radiotap version */
2161 0x0e, 0x00, /* radiotap length */
2162 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2163 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2164 0x00, /* padding */
2165 0x00, 0x00, /* RX and TX flags to indicate that */
2166 0x00, 0x00, /* this is the injected frame directly */
2167 };
2168 struct iovec iov[2] = {
2169 {
2170 .iov_base = &rtap_hdr,
2171 .iov_len = sizeof(rtap_hdr),
2172 },
2173 {
2174 .iov_base = (void *) data,
2175 .iov_len = len,
2176 }
2177 };
2178 struct msghdr msg = {
2179 .msg_name = NULL,
2180 .msg_namelen = 0,
2181 .msg_iov = iov,
2182 .msg_iovlen = 2,
2183 .msg_control = NULL,
2184 .msg_controllen = 0,
2185 .msg_flags = 0,
2186 };
2187
2188 if (encrypt)
2189 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2190
2191 return sendmsg(drv->monitor_sock, &msg, 0);
2192}
2193
2194
2195static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2196 size_t data_len)
2197{
2198 struct wpa_driver_nl80211_data *drv = priv;
2199 struct ieee80211_mgmt *mgmt;
2200 int do_not_encrypt = 0;
2201 u16 fc;
2202
2203 mgmt = (struct ieee80211_mgmt *) data;
2204 fc = le_to_host16(mgmt->frame_control);
2205
2206 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2207 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2208 /*
2209 * Only one of the authentication frame types is encrypted.
2210 * In order for static WEP encryption to work properly (i.e.,
2211 * to not encrypt the frame), we need to tell mac80211 about
2212 * the frames that must not be encrypted.
2213 */
2214 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2215 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2216 if (auth_alg == WLAN_AUTH_OPEN ||
2217 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
2218 do_not_encrypt = 1;
2219 }
2220
2221 return wpa_driver_nl80211_send_frame(drv, data, data_len,
2222 !do_not_encrypt);
2223}
2224
2225
b4fd6fab
JM		 2226static int wpa_driver_nl80211_set_beacon_iface(int ifindex, void *priv,
2227 const u8 *head, size_t head_len,
2228 const u8 *tail, size_t tail_len,
2229 int dtim_period)
d2440ba0
JM		 2230{
2231 struct wpa_driver_nl80211_data *drv = priv;
2232 struct nl_msg *msg;
2233 u8 cmd = NL80211_CMD_NEW_BEACON;
2234 int ret;
b4fd6fab
JM		 2235 int beacon_set;
2236#ifdef HOSTAPD
2237 struct i802_bss *bss;
2238
2239 bss = get_bss(drv, ifindex);
2240 if (bss == NULL)
2241 return -ENOENT;
2242 beacon_set = bss->beacon_set;
2243#else /* HOSTAPD */
2244 beacon_set = drv->beacon_set;
2245#endif /* HOSTAPD */
d2440ba0
JM		 2246
2247 msg = nlmsg_alloc();
2248 if (!msg)
2249 return -ENOMEM;
2250
2251 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
b4fd6fab
JM		 2252 beacon_set);
2253 if (beacon_set)
d2440ba0
JM		 2254 cmd = NL80211_CMD_SET_BEACON;
2255
2256 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2257 0, cmd, 0);
2258 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2259 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
b4fd6fab 2260 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
d2440ba0
JM		 2261 if (!drv->beacon_int)
2262 drv->beacon_int = 100;
2263 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
2264 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2265
2266 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2267 if (ret) {
2268 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2269 ret, strerror(-ret));
b4fd6fab
JM		 2270 } else {
2271#ifdef HOSTAPD
2272 bss->beacon_set = 1;
2273#else /* HOSTAPD */
d2440ba0 2274 drv->beacon_set = 1;
b4fd6fab
JM		 2275#endif /* HOSTAPD */
2276 }
d2440ba0
JM		 2277 return ret;
2278 nla_put_failure:
2279 return -ENOBUFS;
2280}
2281
2282
2283static int wpa_driver_nl80211_set_beacon_int(void *priv, int value)
2284{
2285 struct wpa_driver_nl80211_data *drv = priv;
2286 struct nl_msg *msg;
2287
2288 drv->beacon_int = value;
2289
b4fd6fab
JM		 2290#ifdef HOSTAPD
2291 if (!drv->bss.beacon_set)
2292 return 0;
2293#else /* HOSTAPD */
d2440ba0
JM		 2294 if (!drv->beacon_set)
2295 return 0;
b4fd6fab 2296#endif /* HOSTAPD */
d2440ba0
JM		 2297
2298 msg = nlmsg_alloc();
2299 if (!msg)
2300 return -ENOMEM;
2301
b4fd6fab 2302 wpa_printf(MSG_DEBUG, "nl80211: Set beacon interval %d", value);
d2440ba0
JM		 2303 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2304 0, NL80211_CMD_SET_BEACON, 0);
2305 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2306
2307 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
2308
2309 return send_and_recv_msgs(drv, msg, NULL, NULL);
2310 nla_put_failure:
2311 return -ENOBUFS;
2312}
2313
2314
f019981a
JM		 2315static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2316 int freq, int ht_enabled,
2317 int sec_channel_offset)
1581b38b
JM		 2318{
2319 struct nl_msg *msg;
d2440ba0 2320 int ret;
1581b38b
JM		 2321
2322 msg = nlmsg_alloc();
2323 if (!msg)
2324 return -1;
2325
2326 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2327 NL80211_CMD_SET_WIPHY, 0);
2328
2329 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
f019981a
JM		 2330 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2331 if (ht_enabled) {
2332 switch (sec_channel_offset) {
2333 case -1:
2334 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2335 NL80211_CHAN_HT40MINUS);
2336 break;
2337 case 1:
2338 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2339 NL80211_CHAN_HT40PLUS);
2340 break;
2341 default:
2342 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2343 NL80211_CHAN_HT20);
2344 break;
2345 }
2346 }
1581b38b 2347
d2440ba0
JM		 2348 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2349 if (ret == 0)
1581b38b 2350 return 0;
f019981a
JM		 2351 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2352 "%d (%s)", freq, ret, strerror(-ret));
1581b38b
JM		 2353nla_put_failure:
2354 return -1;
2355}
2356
0f4e8b4f
JM		 2357
2358static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2359 struct hostapd_sta_add_params *params)
2360{
2361 struct wpa_driver_nl80211_data *drv = priv;
2362 struct nl_msg *msg;
2363 int ret = -ENOBUFS;
2364
2365 msg = nlmsg_alloc();
2366 if (!msg)
2367 return -ENOMEM;
2368
2369 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2370 0, NL80211_CMD_NEW_STATION, 0);
2371
2372 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2373 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2374 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2375 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2376 params->supp_rates);
2377 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2378 params->listen_interval);
2379
2380#ifdef CONFIG_IEEE80211N
2381 if (params->ht_capabilities) {
2382 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2383 params->ht_capabilities->length,
2384 &params->ht_capabilities->data);
2385 }
2386#endif /* CONFIG_IEEE80211N */
2387
2388 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2389 if (ret)
2390 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2391 "result: %d (%s)", ret, strerror(-ret));
2392 if (ret == -EEXIST)
2393 ret = 0;
2394 nla_put_failure:
2395 return ret;
2396}
2397
2398
2399static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2400{
2401 struct wpa_driver_nl80211_data *drv = priv;
2402 struct nl_msg *msg;
2403 int ret;
2404
2405 msg = nlmsg_alloc();
2406 if (!msg)
2407 return -ENOMEM;
2408
2409 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2410 0, NL80211_CMD_DEL_STATION, 0);
2411
2412 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2413 if_nametoindex(drv->ifname));
2414 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2415
2416 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2417 if (ret == -ENOENT)
2418 return 0;
2419 return ret;
2420 nla_put_failure:
2421 return -ENOBUFS;
2422}
2423
f019981a
JM		 2424#endif /* CONFIG_AP || HOSTAPD */
2425
2426
2427#ifdef CONFIG_AP
2428
2429static int wpa_driver_nl80211_set_beacon(void *priv,
2430 const u8 *head, size_t head_len,
2431 const u8 *tail, size_t tail_len,
2432 int dtim_period)
2433{
2434 struct wpa_driver_nl80211_data *drv = priv;
2435 return wpa_driver_nl80211_set_beacon_iface(drv->ifindex, priv,
2436 head, head_len,
2437 tail, tail_len,
2438 dtim_period);
2439}
2440
2135f224
JM		 2441#endif /* CONFIG_AP */
2442
2443#if defined(CONFIG_AP) || defined(HOSTAPD)
1581b38b 2444
0915d02c
JM		 2445static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2446 int ifidx)
2447{
2448 struct nl_msg *msg;
2449
2135f224
JM		 2450#ifdef HOSTAPD
2451 /* stop listening for EAPOL on this interface */
2452 del_ifidx(drv, ifidx);
2453#endif /* HOSTAPD */
2454
0915d02c
JM		 2455 msg = nlmsg_alloc();
2456 if (!msg)
2457 goto nla_put_failure;
2458
2459 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2460 0, NL80211_CMD_DEL_INTERFACE, 0);
2461 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2462
2463 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2464 return;
2465 nla_put_failure:
2466 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2467 ifidx);
2468}
2469
2470
a35187e7
KH		 2471static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2472 const char *ifname,
2473 enum nl80211_iftype iftype,
2474 const u8 *addr)
0915d02c
JM		 2475{
2476 struct nl_msg *msg, *flags = NULL;
2477 int ifidx;
2478 int ret = -ENOBUFS;
2479
2480 msg = nlmsg_alloc();
2481 if (!msg)
2482 return -1;
2483
2484 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2485 0, NL80211_CMD_NEW_INTERFACE, 0);
2486 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2487 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2488 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2489
2490 if (iftype == NL80211_IFTYPE_MONITOR) {
2491 int err;
2492
2493 flags = nlmsg_alloc();
2494 if (!flags)
2495 goto nla_put_failure;
2496
2497 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2498
2499 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2500
2501 nlmsg_free(flags);
2502
2503 if (err)
2504 goto nla_put_failure;
2505 }
2506
2507 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2508 if (ret) {
2509 nla_put_failure:
a35187e7
KH		 2510 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2511 ifname, ret, strerror(-ret));
0915d02c
JM		 2512 return ret;
2513 }
2514
2515 ifidx = if_nametoindex(ifname);
2516
2517 if (ifidx <= 0)
2518 return -1;
2519
2135f224
JM		 2520#ifdef HOSTAPD
2521 /* start listening for EAPOL on this interface */
2522 add_ifidx(drv, ifidx);
2523
41d931ee
JM		 2524 if (addr && iftype == NL80211_IFTYPE_AP &&
2525 set_ifhwaddr(drv, ifname, addr)) {
2526 nl80211_remove_iface(drv, ifidx);
2527 return -1;
2135f224
JM		 2528 }
2529#endif /* HOSTAPD */
2530
0915d02c
JM		 2531 return ifidx;
2532}
a35187e7
KH		 2533static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2534 const char *ifname, enum nl80211_iftype iftype,
2535 const u8 *addr)
2536{
2537 int ret;
2538
2539 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2540
2541 /* if error occured and interface exists already */
2542 if (ret == -ENFILE && if_nametoindex(ifname)) {
2543 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2544
2545 /* Try to remove the interface that was already there. */
2546 nl80211_remove_iface(drv, if_nametoindex(ifname));
2547
2548 /* Try to create the interface again */
2549 ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
2550 }
2551
2552 return ret;
2553}
0915d02c 2554
2135f224
JM		 2555#endif /* CONFIG_AP || HOSTAPD */
2556
2557#ifdef CONFIG_AP
0915d02c 2558
0915d02c
JM		 2559void ap_tx_status(void *ctx, const u8 *addr,
2560 const u8 *buf, size_t len, int ack);
2561void ap_rx_from_unknown_sta(void *ctx, const u8 *addr);
2562void ap_mgmt_rx(void *ctx, u8 *buf, size_t len, u16 stype,
2563 struct hostapd_frame_info *fi);
2564void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
2565
072ad14c
JM		 2566#endif /* CONFIG_AP */
2567
2568#if defined(CONFIG_AP) || defined(HOSTAPD)
0915d02c
JM		 2569
2570static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2571{
2572 struct ieee80211_hdr *hdr;
2573 u16 fc, type, stype;
2574
2575 hdr = (struct ieee80211_hdr *) buf;
2576 fc = le_to_host16(hdr->frame_control);
2577
2578 type = WLAN_FC_GET_TYPE(fc);
2579 stype = WLAN_FC_GET_STYPE(fc);
2580
2581 switch (type) {
2582 case WLAN_FC_TYPE_MGMT:
2583 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
2584 ok ? "ACK" : "fail");
072ad14c
JM		 2585#ifdef HOSTAPD
2586 hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
2587#else /* HOSTAPD */
0915d02c 2588 ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
072ad14c 2589#endif /* HOSTAPD */
0915d02c
JM		 2590 break;
2591 case WLAN_FC_TYPE_CTRL:
2592 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
2593 ok ? "ACK" : "fail");
2594 break;
2595 case WLAN_FC_TYPE_DATA:
072ad14c
JM		 2596#ifdef HOSTAPD
2597 hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
2598#else /* HOSTAPD */
0915d02c 2599 ap_tx_status(ctx, hdr->addr1, buf, len, ok);
072ad14c 2600#endif /* HOSTAPD */
0915d02c
JM		 2601 break;
2602 default:
2603 wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
2604 type);
2605 break;
2606 }
2607}
2608
2609
4b9841d3
JM		 2610static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2611 struct ieee80211_hdr *hdr, size_t len)
0915d02c 2612{
7da3abe7 2613#ifdef HOSTAPD
4b9841d3
JM		 2614 hostapd_rx_from_unknown_sta(drv->ctx, hdr, len);
2615#else /* HOSTAPD */
2616 ap_rx_from_unknown_sta(drv->ctx, hdr->addr2);
7da3abe7 2617#endif /* HOSTAPD */
4b9841d3 2618}
0915d02c 2619
4b9841d3
JM		 2620
2621static void handle_frame(struct wpa_driver_nl80211_data *drv,
2622 u8 *buf, size_t len,
2623 struct hostapd_frame_info *hfi)
2624{
2625 struct ieee80211_hdr *hdr;
2626 u16 fc, stype;
0915d02c
JM		 2627
2628 hdr = (struct ieee80211_hdr *) buf;
2629 fc = le_to_host16(hdr->frame_control);
0915d02c
JM		 2630 stype = WLAN_FC_GET_STYPE(fc);
2631
4b9841d3 2632 switch (WLAN_FC_GET_TYPE(fc)) {
0915d02c
JM		 2633 case WLAN_FC_TYPE_MGMT:
2634 if (stype != WLAN_FC_STYPE_BEACON &&
2635 stype != WLAN_FC_STYPE_PROBE_REQ)
2636 wpa_printf(MSG_MSGDUMP, "MGMT");
7da3abe7 2637#ifdef HOSTAPD
4b9841d3 2638 hostapd_mgmt_rx(drv->ctx, buf, len, stype, hfi);
7da3abe7 2639#else /* HOSTAPD */
4b9841d3 2640 ap_mgmt_rx(drv->ctx, buf, len, stype, hfi);
7da3abe7 2641#endif /* HOSTAPD */
0915d02c
JM		 2642 break;
2643 case WLAN_FC_TYPE_CTRL:
2644 /* can only get here with PS-Poll frames */
2645 wpa_printf(MSG_DEBUG, "CTRL");
4b9841d3 2646 from_unknown_sta(drv, hdr, len);
0915d02c
JM		 2647 break;
2648 case WLAN_FC_TYPE_DATA:
4b9841d3 2649 from_unknown_sta(drv, hdr, len);
0915d02c
JM		 2650 break;
2651 }
2652}
2653
2654
2655static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2656{
2657 struct wpa_driver_nl80211_data *drv = eloop_ctx;
2658 int len;
2659 unsigned char buf[3000];
2660 struct ieee80211_radiotap_iterator iter;
2661 int ret;
2662 struct hostapd_frame_info hfi;
4b9841d3 2663 int injected = 0, failed = 0, rxflags = 0;
0915d02c
JM		 2664
2665 len = recv(sock, buf, sizeof(buf), 0);
2666 if (len < 0) {
2667 perror("recv");
2668 return;
2669 }
2670
2671 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2672 printf("received invalid radiotap frame\n");
2673 return;
2674 }
2675
2676 memset(&hfi, 0, sizeof(hfi));
2677
2678 while (1) {
2679 ret = ieee80211_radiotap_iterator_next(&iter);
2680 if (ret == -ENOENT)
2681 break;
2682 if (ret) {
2683 printf("received invalid radiotap frame (%d)\n", ret);
2684 return;
2685 }
2686 switch (iter.this_arg_index) {
2687 case IEEE80211_RADIOTAP_FLAGS:
2688 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2689 len -= 4;
2690 break;
2691 case IEEE80211_RADIOTAP_RX_FLAGS:
2692 rxflags = 1;
2693 break;
2694 case IEEE80211_RADIOTAP_TX_FLAGS:
2695 injected = 1;
2696 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2697 IEEE80211_RADIOTAP_F_TX_FAIL;
2698 break;
2699 case IEEE80211_RADIOTAP_DATA_RETRIES:
2700 break;
2701 case IEEE80211_RADIOTAP_CHANNEL:
2702 /* TODO convert from freq/flags to channel number
2703 hfi.channel = XXX;
2704 hfi.phytype = XXX;
2705 */
2706 break;
2707 case IEEE80211_RADIOTAP_RATE:
2708 hfi.datarate = *iter.this_arg * 5;
2709 break;
2710 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2711 hfi.ssi_signal = *iter.this_arg;
2712 break;
2713 }
2714 }
2715
2716 if (rxflags && injected)
2717 return;
2718
2719 if (!injected)
4b9841d3
JM		 2720 handle_frame(drv, buf + iter.max_length,
2721 len - iter.max_length, &hfi);
0915d02c 2722 else
4b9841d3
JM		 2723 handle_tx_callback(drv->ctx, buf + iter.max_length,
2724 len - iter.max_length, !failed);
0915d02c
JM		 2725}
2726
2727
2728/*
2729 * we post-process the filter code later and rewrite
2730 * this to the offset to the last instruction
2731 */
2732#define PASS 0xFF
2733#define FAIL 0xFE
2734
2735static struct sock_filter msock_filter_insns[] = {
2736 /*
2737 * do a little-endian load of the radiotap length field
2738 */
2739 /* load lower byte into A */
2740 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
2741 /* put it into X (== index register) */
2742 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2743 /* load upper byte into A */
2744 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
2745 /* left-shift it by 8 */
2746 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2747 /* or with X */
2748 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2749 /* put result into X */
2750 BPF_STMT(BPF_MISC| BPF_TAX, 0),
2751
2752 /*
2753 * Allow management frames through, this also gives us those
2754 * management frames that we sent ourselves with status
2755 */
2756 /* load the lower byte of the IEEE 802.11 frame control field */
2757 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2758 /* mask off frame type and version */
2759 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2760 /* accept frame if it's both 0, fall through otherwise */
2761 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2762
2763 /*
2764 * TODO: add a bit to radiotap RX flags that indicates
2765 * that the sending station is not associated, then
2766 * add a filter here that filters on our DA and that flag
2767 * to allow us to deauth frames to that bad station.
2768 *
2769 * Not a regression -- we didn't do it before either.
2770 */
2771
2772#if 0
2773 /*
2774 * drop non-data frames, WDS frames
2775 */
2776 /* load the lower byte of the frame control field */
2777 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2778 /* mask off QoS bit */
2779 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
2780 /* drop non-data frames */
2781 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
2782 /* load the upper byte of the frame control field */
2783 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2784 /* mask off toDS/fromDS */
2785 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
2786 /* drop WDS frames */
2787 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
2788#endif
2789
2790 /*
2791 * add header length to index
2792 */
2793 /* load the lower byte of the frame control field */
2794 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
2795 /* mask off QoS bit */
2796 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
2797 /* right shift it by 6 to give 0 or 2 */
2798 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2799 /* add data frame header length */
2800 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2801 /* add index, was start of 802.11 header */
2802 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2803 /* move to index, now start of LL header */
2804 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2805
2806 /*
2807 * Accept empty data frames, we use those for
2808 * polling activity.
2809 */
2810 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2811 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2812
2813 /*
2814 * Accept EAPOL frames
2815 */
2816 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2817 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2818 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2819 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2820
2821 /* keep these last two statements or change the code below */
2822 /* return 0 == "DROP" */
2823 BPF_STMT(BPF_RET | BPF_K, 0),
2824 /* return ~0 == "keep all" */
2825 BPF_STMT(BPF_RET | BPF_K, ~0),
2826};
2827
2828static struct sock_fprog msock_filter = {
2829 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2830 .filter = msock_filter_insns,
2831};
2832
2833
2834static int add_monitor_filter(int s)
2835{
2836 int idx;
2837
2838 /* rewrite all PASS/FAIL jump offsets */
2839 for (idx = 0; idx < msock_filter.len; idx++) {
2840 struct sock_filter *insn = &msock_filter_insns[idx];
2841
2842 if (BPF_CLASS(insn->code) == BPF_JMP) {
2843 if (insn->code == (BPF_JMP|BPF_JA)) {
2844 if (insn->k == PASS)
2845 insn->k = msock_filter.len - idx - 2;
2846 else if (insn->k == FAIL)
2847 insn->k = msock_filter.len - idx - 3;
2848 }
2849
2850 if (insn->jt == PASS)
2851 insn->jt = msock_filter.len - idx - 2;
2852 else if (insn->jt == FAIL)
2853 insn->jt = msock_filter.len - idx - 3;
2854
2855 if (insn->jf == PASS)
2856 insn->jf = msock_filter.len - idx - 2;
2857 else if (insn->jf == FAIL)
2858 insn->jf = msock_filter.len - idx - 3;
2859 }
2860 }
2861
2862 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2863 &msock_filter, sizeof(msock_filter))) {
2864 perror("SO_ATTACH_FILTER");
2865 return -1;
2866 }
2867
2868 return 0;
2869}
2870
2871
460456f8
JM		 2872static void nl80211_remove_monitor_interface(
2873 struct wpa_driver_nl80211_data *drv)
2874{
2875 if (drv->monitor_ifidx >= 0) {
2876 nl80211_remove_iface(drv, drv->monitor_ifidx);
2877 drv->monitor_ifidx = -1;
2878 }
2879}
2880
2881
0915d02c
JM		 2882static int
2883nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
2884{
2885 char buf[IFNAMSIZ];
2886 struct sockaddr_ll ll;
2887 int optval;
2888 socklen_t optlen;
0915d02c
JM		 2889
2890 snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
2891 buf[IFNAMSIZ - 1] = '\0';
2892
2893 drv->monitor_ifidx =
2135f224 2894 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
0915d02c
JM		 2895
2896 if (drv->monitor_ifidx < 0)
2897 return -1;
2898
2135f224 2899 if (hostapd_set_iface_flags(drv, buf, 1))
0915d02c 2900 goto error;
0915d02c
JM		 2901
2902 memset(&ll, 0, sizeof(ll));
2903 ll.sll_family = AF_PACKET;
2904 ll.sll_ifindex = drv->monitor_ifidx;
2905 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2906 if (drv->monitor_sock < 0) {
2907 perror("socket[PF_PACKET,SOCK_RAW]");
2908 goto error;
2909 }
2910
2911 if (add_monitor_filter(drv->monitor_sock)) {
2912 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2913 "interface; do filtering in user space");
2914 /* This works, but will cost in performance. */
2915 }
2916
2135f224 2917 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
0915d02c
JM		 2918 perror("monitor socket bind");
2919 goto error;
2920 }
2921
2922 optlen = sizeof(optval);
2923 optval = 20;
2924 if (setsockopt
2925 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2926 perror("Failed to set socket priority");
2927 goto error;
2928 }
2929
2930 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2931 drv, NULL)) {
2932 printf("Could not register monitor read socket\n");
2933 goto error;
2934 }
2935
2936 return 0;
2937 error:
460456f8 2938 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 2939 return -1;
2940}
2941
db149ac9
JM		 2942
2943static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
2944
2945static int wpa_driver_nl80211_hapd_send_eapol(
2946 void *priv, const u8 *addr, const u8 *data,
2947 size_t data_len, int encrypt, const u8 *own_addr)
2948{
2949 struct wpa_driver_nl80211_data *drv = priv;
2950 struct ieee80211_hdr *hdr;
2951 size_t len;
2952 u8 *pos;
2953 int res;
2954#if 0 /* FIX */
2955 int qos = sta->flags & WLAN_STA_WME;
2956#else
2957 int qos = 0;
2958#endif
2959
2960 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
2961 data_len;
2962 hdr = os_zalloc(len);
2963 if (hdr == NULL) {
2964 printf("malloc() failed for i802_send_data(len=%lu)\n",
2965 (unsigned long) len);
2966 return -1;
2967 }
2968
2969 hdr->frame_control =
2970 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
2971 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
2972 if (encrypt)
2973 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
2974#if 0 /* To be enabled if qos determination is added above */
2975 if (qos) {
2976 hdr->frame_control |=
2977 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
2978 }
2979#endif
2980
2981 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
2982 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
2983 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
2984 pos = (u8 *) (hdr + 1);
2985
2986#if 0 /* To be enabled if qos determination is added above */
2987 if (qos) {
2988 /* add an empty QoS header if needed */
2989 pos[0] = 0;
2990 pos[1] = 0;
2991 pos += 2;
2992 }
2993#endif
2994
2995 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
2996 pos += sizeof(rfc1042_header);
2997 WPA_PUT_BE16(pos, ETH_P_PAE);
2998 pos += 2;
2999 memcpy(pos, data, data_len);
3000
3001 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3002 if (res < 0) {
3003 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3004 "failed: %d (%s)",
3005 (unsigned long) len, errno, strerror(errno));
3006 }
3007 free(hdr);
3008
3009 return res;
3010}
3011
a8d6ffa4 3012
7e76ee9c
JM		 3013static u32 sta_flags_nl80211(int flags)
3014{
3015 u32 f = 0;
3016
3017 if (flags & WLAN_STA_AUTHORIZED)
3018 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3019 if (flags & WLAN_STA_WMM)
3020 f |= BIT(NL80211_STA_FLAG_WME);
3021 if (flags & WLAN_STA_SHORT_PREAMBLE)
3022 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3023 if (flags & WLAN_STA_MFP)
3024 f |= BIT(NL80211_STA_FLAG_MFP);
3025
3026 return f;
3027}
3028
3029
a8d6ffa4
JM		 3030static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3031 int total_flags, int flags_or,
3032 int flags_and)
3033{
3034 struct wpa_driver_nl80211_data *drv = priv;
3035 struct nl_msg *msg, *flags = NULL;
7e76ee9c 3036 struct nl80211_sta_flag_update upd;
a8d6ffa4
JM		 3037
3038 msg = nlmsg_alloc();
3039 if (!msg)
3040 return -ENOMEM;
3041
3042 flags = nlmsg_alloc();
3043 if (!flags) {
3044 nlmsg_free(msg);
3045 return -ENOMEM;
3046 }
3047
3048 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3049 0, NL80211_CMD_SET_STATION, 0);
3050
3051 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3052 if_nametoindex(drv->ifname));
3053 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3054
7e76ee9c
JM		 3055 /*
3056 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3057 * can be removed eventually.
3058 */
a8d6ffa4
JM		 3059 if (total_flags & WLAN_STA_AUTHORIZED)
3060 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3061
3062 if (total_flags & WLAN_STA_WMM)
3063 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3064
3065 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
3066 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3067
3068 if (total_flags & WLAN_STA_MFP)
3069 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3070
3071 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3072 goto nla_put_failure;
3073
7e76ee9c
JM		 3074 os_memset(&upd, 0, sizeof(upd));
3075 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3076 upd.set = sta_flags_nl80211(flags_or);
3077 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3078
a8d6ffa4
JM		 3079 nlmsg_free(flags);
3080
3081 return send_and_recv_msgs(drv, msg, NULL, NULL);
3082 nla_put_failure:
3083 nlmsg_free(flags);
3084 return -ENOBUFS;
3085}
3086
2135f224
JM		 3087#endif /* CONFIG_AP || HOSTAPD */
3088
3089#ifdef CONFIG_AP
0915d02c 3090
1581b38b
JM		 3091static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3092 struct wpa_driver_associate_params *params)
3093{
3094 if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
f019981a 3095 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
460456f8 3096 nl80211_remove_monitor_interface(drv);
1581b38b 3097 return -1;
0915d02c 3098 }
1581b38b
JM		 3099
3100 /* TODO: setup monitor interface (and add code somewhere to remove this
3101 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
1581b38b
JM		 3102
3103 return 0;
3104}
3105#endif /* CONFIG_AP */
3106
3107
c811d5bc 3108#ifndef HOSTAPD
c2a04078
JM		 3109static int wpa_driver_nl80211_associate(
3110 void *priv, struct wpa_driver_associate_params *params)
3111{
3112 struct wpa_driver_nl80211_data *drv = priv;
3113 int ret = -1;
3114 struct nl_msg *msg;
3115
1581b38b
JM		 3116#ifdef CONFIG_AP
3117 if (params->mode == 2)
3118 return wpa_driver_nl80211_ap(drv, params);
3119#endif /* CONFIG_AP */
3120
37b7d082 3121#ifndef NO_WEXT
36b15723
JM		 3122 wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
3123 params->drop_unencrypted);
37b7d082 3124#endif /* NO_WEXT */
36b15723 3125
c2a04078
JM		 3126 drv->associated = 0;
3127
3128 msg = nlmsg_alloc();
3129 if (!msg)
3130 return -1;
3131
3132 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3133 drv->ifindex);
3134 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3135 NL80211_CMD_ASSOCIATE, 0);
3136
3137 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3138 if (params->bssid) {
3139 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3140 MAC2STR(params->bssid));
3141 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3142 }
3143 if (params->freq) {
3144 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3145 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3146 }
3147 if (params->ssid) {
3148 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3149 params->ssid, params->ssid_len);
3150 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3151 params->ssid);
fd05d64e
JM		 3152 if (params->ssid_len > sizeof(drv->ssid))
3153 goto nla_put_failure;
3154 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3155 drv->ssid_len = params->ssid_len;
c2a04078
JM		 3156 }
3157 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3158 if (params->wpa_ie)
3159 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3160 params->wpa_ie);
3161
e572fa33
JM		 3162#ifdef CONFIG_IEEE80211W
3163 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3164 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3165#endif /* CONFIG_IEEE80211W */
3166
01652550
JM		 3167 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3168
c2a04078
JM		 3169 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3170 msg = NULL;
3171 if (ret) {
3172 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3173 "(%s)", ret, strerror(-ret));
3174 goto nla_put_failure;
3175 }
3176 ret = 0;
3177 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3178 "successfully");
3179
3180nla_put_failure:
3181 nlmsg_free(msg);
3182 return ret;
3183}
c811d5bc 3184#endif /* HOSTAPD */
3f5285e8
JM		 3185
3186
ad1e68e6
JM		 3187static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3188 int ifindex, int mode)
3f5285e8 3189{
3f5285e8 3190 struct nl_msg *msg;
ad1e68e6
JM		 3191 int ret = -ENOBUFS;
3192
3193 msg = nlmsg_alloc();
3194 if (!msg)
3195 return -ENOMEM;
3196
3197 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3198 0, NL80211_CMD_SET_INTERFACE, 0);
3199 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3200 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3201
3202 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3203 if (!ret)
3204 return 0;
3205nla_put_failure:
3206 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3207 " %d (%s)", ifindex, mode, ret, strerror(-ret));
3208 return ret;
3209}
3210
3211
3212static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3213{
3214 struct wpa_driver_nl80211_data *drv = priv;
3215 int ret = -1;
1581b38b
JM		 3216 int nlmode;
3217
3218 switch (mode) {
3219 case 0:
3220 nlmode = NL80211_IFTYPE_STATION;
3221 break;
3222 case 1:
3223 nlmode = NL80211_IFTYPE_ADHOC;
3224 break;
3225 case 2:
3226 nlmode = NL80211_IFTYPE_AP;
3227 break;
3228 default:
3229 return -1;
3230 }
3f5285e8 3231
ad1e68e6
JM		 3232 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3233 drv->nlmode = nlmode;
460456f8
JM		 3234 ret = 0;
3235 goto done;
ad1e68e6 3236 }
3f5285e8 3237
460456f8
JM		 3238 if (nlmode == drv->nlmode) {
3239 ret = 0;
3240 goto done; /* Already in the requested mode */
3241 }
3f5285e8 3242
3f5285e8
JM		 3243 /* mac80211 doesn't allow mode changes while the device is up, so
3244 * take the device down, try to set the mode again, and bring the
3245 * device back up.
3246 */
2135f224 3247 if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3f5285e8 3248 /* Try to set the mode again while the interface is down */
ad1e68e6 3249 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
2135f224
JM		 3250 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3251 ret = -1;
3f5285e8
JM		 3252 }
3253
ad1e68e6
JM		 3254 if (!ret)
3255 drv->nlmode = nlmode;
3256
460456f8
JM		 3257done:
3258#if defined(CONFIG_AP) || defined(HOSTAPD)
3259 if (!ret && nlmode == NL80211_IFTYPE_AP) {
3260 /* Setup additional AP mode functionality if needed */
3261 if (drv->monitor_ifidx < 0 &&
3262 nl80211_create_monitor_interface(drv))
3263 return -1;
3264 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3265 /* Remove additional AP mode functionality */
3266 nl80211_remove_monitor_interface(drv);
3267 }
3268#endif /* CONFIG_AP || HOSTAPD */
3269
3f5285e8
JM		 3270 return ret;
3271}
3272
3273
c811d5bc
JM		 3274#ifndef HOSTAPD
3275
3f5285e8
JM		 3276static int wpa_driver_nl80211_get_capa(void *priv,
3277 struct wpa_driver_capa *capa)
3278{
3279 struct wpa_driver_nl80211_data *drv = priv;
3280 if (!drv->has_capability)
3281 return -1;
3282 os_memcpy(capa, &drv->capa, sizeof(*capa));
3283 return 0;
3284}
3285
3286
3287static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3288{
3289 struct wpa_driver_nl80211_data *drv = priv;
3290
3291 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3292 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3293 drv->operstate = state;
3294 return wpa_driver_nl80211_send_oper_ifla(
3295 drv, -1, state ? IF_OPER_UP : IF_OPER_DORMANT);
3296}
3297
01652550
JM		 3298
3299static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3300{
3301 struct wpa_driver_nl80211_data *drv = priv;
3302 struct nl_msg *msg;
3303 struct nl80211_sta_flag_update upd;
3304
3305 msg = nlmsg_alloc();
3306 if (!msg)
3307 return -ENOMEM;
3308
3309 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3310 0, NL80211_CMD_SET_STATION, 0);
3311
3312 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3313 if_nametoindex(drv->ifname));
3314 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3315
3316 os_memset(&upd, 0, sizeof(upd));
3317 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3318 if (authorized)
3319 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3320 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3321
3322 return send_and_recv_msgs(drv, msg, NULL, NULL);
3323 nla_put_failure:
3324 return -ENOBUFS;
3325}
3326
c811d5bc
JM		 3327#endif /* HOSTAPD */
3328
3f5285e8 3329
c5121837
JM		 3330#ifdef HOSTAPD
3331
c5121837 3332static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
b4fd6fab 3333 int ifindex)
c5121837
JM		 3334{
3335 struct i802_bss *bss = &drv->bss;
3336 while (bss) {
b4fd6fab 3337 if (ifindex == bss->ifindex)
c5121837
JM		 3338 return bss;
3339 bss = bss->next;
3340 }
b4fd6fab 3341 wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
c5121837
JM		 3342 return NULL;
3343}
3344
3345
3346static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3347{
3348 int i;
3349 int *old;
3350
3351 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3352 ifidx);
3353 for (i = 0; i < drv->num_if_indices; i++) {
3354 if (drv->if_indices[i] == 0) {
3355 drv->if_indices[i] = ifidx;
3356 return;
3357 }
3358 }
3359
3360 if (drv->if_indices != drv->default_if_indices)
3361 old = drv->if_indices;
3362 else
3363 old = NULL;
3364
3365 drv->if_indices = realloc(old,
3366 sizeof(int) * (drv->num_if_indices + 1));
3367 if (!drv->if_indices) {
3368 if (!old)
3369 drv->if_indices = drv->default_if_indices;
3370 else
3371 drv->if_indices = old;
3372 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3373 "interfaces");
3374 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3375 return;
3376 }
3377 drv->if_indices[drv->num_if_indices] = ifidx;
3378 drv->num_if_indices++;
3379}
3380
3381
3382static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3383{
3384 int i;
3385
3386 for (i = 0; i < drv->num_if_indices; i++) {
3387 if (drv->if_indices[i] == ifidx) {
3388 drv->if_indices[i] = 0;
3389 break;
3390 }
3391 }
3392}
3393
3394
3395static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3396{
3397 int i;
3398
3399 for (i = 0; i < drv->num_if_indices; i++)
3400 if (drv->if_indices[i] == ifidx)
3401 return 1;
3402
3403 return 0;
3404}
3405
3406
c5121837
JM		 3407static int i802_set_key(const char *iface, void *priv, wpa_alg alg,
3408 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
3409 size_t seq_len, const u8 *key, size_t key_len)
3410{
3411 struct wpa_driver_nl80211_data *drv = priv;
1ad1cdc2
JM		 3412 return nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx,
3413 set_tx, seq, seq_len, key, key_len);
c5121837
JM		 3414}
3415
3416
3417static inline int min_int(int a, int b)
3418{
3419 if (a < b)
3420 return a;
3421 return b;
3422}
3423
3424
3425static int get_key_handler(struct nl_msg *msg, void *arg)
3426{
3427 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3428 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3429
3430 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3431 genlmsg_attrlen(gnlh, 0), NULL);
3432
3433 /*
3434 * TODO: validate the key index and mac address!
3435 * Otherwise, there's a race condition as soon as
3436 * the kernel starts sending key notifications.
3437 */
3438
3439 if (tb[NL80211_ATTR_KEY_SEQ])
3440 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3441 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3442 return NL_SKIP;
3443}
3444
3445
3446static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3447 int idx, u8 *seq)
3448{
3449 struct wpa_driver_nl80211_data *drv = priv;
3450 struct nl_msg *msg;
3451
3452 msg = nlmsg_alloc();
3453 if (!msg)
3454 return -ENOMEM;
3455
3456 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3457 0, NL80211_CMD_GET_KEY, 0);
3458
3459 if (addr)
3460 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3461 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3462 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3463
3464 memset(seq, 0, 6);
3465
3466 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3467 nla_put_failure:
3468 return -ENOBUFS;
3469}
3470
3471
3472static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3473 int mode)
3474{
3475 struct wpa_driver_nl80211_data *drv = priv;
3476 struct nl_msg *msg;
3477 u8 rates[NL80211_MAX_SUPP_RATES];
3478 u8 rates_len = 0;
3479 int i;
3480
3481 msg = nlmsg_alloc();
3482 if (!msg)
3483 return -ENOMEM;
3484
3485 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3486 NL80211_CMD_SET_BSS, 0);
3487
3488 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3489 rates[rates_len++] = basic_rates[i] / 5;
3490
3491 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3492
3493 /* TODO: multi-BSS support */
3494 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3495
3496 return send_and_recv_msgs(drv, msg, NULL, NULL);
3497 nla_put_failure:
3498 return -ENOBUFS;
3499}
3500
3501
c5121837
JM		 3502/* Set kernel driver on given frequency (MHz) */
3503static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3504{
3505 struct wpa_driver_nl80211_data *drv = priv;
f019981a
JM		 3506 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3507 freq->sec_channel_offset);
c5121837
JM		 3508}
3509
3510
3511static int i802_set_rts(void *priv, int rts)
3512{
3513 struct wpa_driver_nl80211_data *drv = priv;
ad649451
JM		 3514 struct nl_msg *msg;
3515 int ret = -ENOBUFS;
3516 u32 val;
c5121837 3517
ad649451
JM		 3518 msg = nlmsg_alloc();
3519 if (!msg)
3520 return -ENOMEM;
c5121837 3521
ad649451
JM		 3522 if (rts >= 2347)
3523 val = (u32) -1;
3524 else
3525 val = rts;
c5121837 3526
ad649451
JM		 3527 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3528 0, NL80211_CMD_SET_WIPHY, 0);
3529 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3530 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3531
3532 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3533 if (!ret)
3534 return 0;
3535nla_put_failure:
3536 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3537 "%d (%s)", rts, ret, strerror(-ret));
3538 return ret;
c5121837
JM		 3539}
3540
3541
3542static int i802_set_frag(void *priv, int frag)
3543{
3544 struct wpa_driver_nl80211_data *drv = priv;
ad649451
JM		 3545 struct nl_msg *msg;
3546 int ret = -ENOBUFS;
3547 u32 val;
c5121837 3548
ad649451
JM		 3549 msg = nlmsg_alloc();
3550 if (!msg)
3551 return -ENOMEM;
c5121837 3552
ad649451
JM		 3553 if (frag >= 2346)
3554 val = (u32) -1;
3555 else
3556 val = frag;
c5121837 3557
ad649451
JM		 3558 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3559 0, NL80211_CMD_SET_WIPHY, 0);
3560 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3561 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3562
3563 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3564 if (!ret)
3565 return 0;
3566nla_put_failure:
3567 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3568 "%d: %d (%s)", frag, ret, strerror(-ret));
3569 return ret;
c5121837
JM		 3570}
3571
3572
c5121837
JM		 3573static int i802_flush(void *priv)
3574{
3575 struct wpa_driver_nl80211_data *drv = priv;
3576 struct nl_msg *msg;
3577
3578 msg = nlmsg_alloc();
3579 if (!msg)
3580 return -1;
3581
3582 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3583 0, NL80211_CMD_DEL_STATION, 0);
3584
3585 /*
3586 * XXX: FIX! this needs to flush all VLANs too
3587 */
3588 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3589 if_nametoindex(drv->ifname));
3590
3591 return send_and_recv_msgs(drv, msg, NULL, NULL);
3592 nla_put_failure:
3593 return -ENOBUFS;
3594}
3595
3596
3597static int get_sta_handler(struct nl_msg *msg, void *arg)
3598{
3599 struct nlattr *tb[NL80211_ATTR_MAX + 1];
3600 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3601 struct hostap_sta_driver_data *data = arg;
3602 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
3603 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
3604 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
3605 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
3606 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
3607 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
3608 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
3609 };
3610
3611 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3612 genlmsg_attrlen(gnlh, 0), NULL);
3613
3614 /*
3615 * TODO: validate the interface and mac address!
3616 * Otherwise, there's a race condition as soon as
3617 * the kernel starts sending station notifications.
3618 */
3619
3620 if (!tb[NL80211_ATTR_STA_INFO]) {
3621 wpa_printf(MSG_DEBUG, "sta stats missing!");
3622 return NL_SKIP;
3623 }
3624 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
3625 tb[NL80211_ATTR_STA_INFO],
3626 stats_policy)) {
3627 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
3628 return NL_SKIP;
3629 }
3630
3631 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
3632 data->inactive_msec =
3633 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
3634 if (stats[NL80211_STA_INFO_RX_BYTES])
3635 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
3636 if (stats[NL80211_STA_INFO_TX_BYTES])
3637 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
3638 if (stats[NL80211_STA_INFO_RX_PACKETS])
3639 data->rx_packets =
3640 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
3641 if (stats[NL80211_STA_INFO_TX_PACKETS])
3642 data->tx_packets =
3643 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
3644
3645 return NL_SKIP;
3646}
3647
3648static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
3649 const u8 *addr)
3650{
3651 struct wpa_driver_nl80211_data *drv = priv;
3652 struct nl_msg *msg;
3653
3654 os_memset(data, 0, sizeof(*data));
3655 msg = nlmsg_alloc();
3656 if (!msg)
3657 return -ENOMEM;
3658
3659 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3660 0, NL80211_CMD_GET_STATION, 0);
3661
3662 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3663 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3664
3665 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
3666 nla_put_failure:
3667 return -ENOBUFS;
3668}
3669
3670
c5121837
JM		 3671static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
3672 int cw_min, int cw_max, int burst_time)
3673{
3674 struct wpa_driver_nl80211_data *drv = priv;
3675 struct nl_msg *msg;
3676 struct nlattr *txq, *params;
3677
3678 msg = nlmsg_alloc();
3679 if (!msg)
3680 return -1;
3681
3682 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3683 0, NL80211_CMD_SET_WIPHY, 0);
3684
3685 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3686
3687 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
3688 if (!txq)
3689 goto nla_put_failure;
3690
3691 /* We are only sending parameters for a single TXQ at a time */
3692 params = nla_nest_start(msg, 1);
3693 if (!params)
3694 goto nla_put_failure;
3695
3696 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
3697 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
3698 * 32 usec, so need to convert the value here. */
3699 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
3700 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
3701 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
3702 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
3703
3704 nla_nest_end(msg, params);
3705
3706 nla_nest_end(msg, txq);
3707
3708 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3709 return 0;
3710 nla_put_failure:
3711 return -1;
3712}
3713
3714
c5121837
JM		 3715static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
3716{
3717 struct wpa_driver_nl80211_data *drv = priv;
3718 int ifidx;
3719 struct i802_bss *bss;
3720
3721 bss = os_zalloc(sizeof(*bss));
3722 if (bss == NULL)
3723 return -1;
c5121837
JM		 3724
3725 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
3726 if (ifidx < 0) {
3727 os_free(bss);
3728 return -1;
3729 }
6d550fbe 3730 bss->ifindex = ifidx;
c5121837
JM		 3731 if (hostapd_set_iface_flags(priv, ifname, 1)) {
3732 nl80211_remove_iface(priv, ifidx);
3733 os_free(bss);
3734 return -1;
3735 }
3736 bss->next = drv->bss.next;
3737 drv->bss.next = bss;
3738 return 0;
3739}
3740
3741
3742static int i802_bss_remove(void *priv, const char *ifname)
3743{
3744 struct wpa_driver_nl80211_data *drv = priv;
3745 struct i802_bss *bss, *prev;
b4fd6fab
JM		 3746 int ifindex = if_nametoindex(ifname);
3747 nl80211_remove_iface(priv, ifindex);
c5121837
JM		 3748 prev = &drv->bss;
3749 bss = drv->bss.next;
3750 while (bss) {
b4fd6fab 3751 if (ifindex == bss->ifindex) {
c5121837
JM		 3752 prev->next = bss->next;
3753 os_free(bss);
3754 break;
3755 }
3756 prev = bss;
3757 bss = bss->next;
3758 }
3759 return 0;
3760}
3761
3762
3763static int i802_set_beacon(const char *iface, void *priv,
3764 const u8 *head, size_t head_len,
3765 const u8 *tail, size_t tail_len, int dtim_period)
3766{
b4fd6fab
JM		 3767 return wpa_driver_nl80211_set_beacon_iface(if_nametoindex(iface), priv,
3768 head, head_len,
3769 tail, tail_len,
3770 dtim_period);
c5121837
JM		 3771}
3772
3773
c5121837
JM		 3774static int i802_set_bss(void *priv, int cts, int preamble, int slot)
3775{
3776 struct wpa_driver_nl80211_data *drv = priv;
3777 struct nl_msg *msg;
3778
3779 msg = nlmsg_alloc();
3780 if (!msg)
3781 return -ENOMEM;
3782
3783 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3784 NL80211_CMD_SET_BSS, 0);
3785
3786 if (cts >= 0)
3787 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
3788 if (preamble >= 0)
3789 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
3790 if (slot >= 0)
3791 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
3792
3793 /* TODO: multi-BSS support */
3794 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3795
3796 return send_and_recv_msgs(drv, msg, NULL, NULL);
3797 nla_put_failure:
3798 return -ENOBUFS;
3799}
3800
3801
3802static int i802_set_cts_protect(void *priv, int value)
3803{
3804 return i802_set_bss(priv, value, -1, -1);
3805}
3806
3807
3808static int i802_set_preamble(void *priv, int value)
3809{
3810 return i802_set_bss(priv, -1, value, -1);
3811}
3812
3813
3814static int i802_set_short_slot_time(void *priv, int value)
3815{
3816 return i802_set_bss(priv, -1, -1, value);
3817}
3818
3819
3820static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
3821{
3822 switch (type) {
3823 case HOSTAPD_IF_VLAN:
3824 return NL80211_IFTYPE_AP_VLAN;
c5121837
JM		 3825 }
3826 return -1;
3827}
3828
3829
3830static int i802_if_add(const char *iface, void *priv,
3831 enum hostapd_driver_if_type type, char *ifname,
3832 const u8 *addr)
3833{
3834 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
3835 return -1;
3836 return 0;
3837}
3838
3839
3840static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
3841 char *ifname, const u8 *addr)
3842{
3843 /* unused at the moment */
3844 return -1;
3845}
3846
3847
3848static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
3849 const char *ifname, const u8 *addr)
3850{
3851 nl80211_remove_iface(priv, if_nametoindex(ifname));
3852 return 0;
3853}
3854
3855
c5121837
JM		 3856static int i802_set_sta_vlan(void *priv, const u8 *addr,
3857 const char *ifname, int vlan_id)
3858{
3859 struct wpa_driver_nl80211_data *drv = priv;
3860 struct nl_msg *msg;
3861
3862 msg = nlmsg_alloc();
3863 if (!msg)
3864 return -ENOMEM;
3865
3866 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3867 0, NL80211_CMD_SET_STATION, 0);
3868
3869 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3870 if_nametoindex(drv->ifname));
3871 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3872 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3873 if_nametoindex(ifname));
3874
3875 return send_and_recv_msgs(drv, msg, NULL, NULL);
3876 nla_put_failure:
3877 return -ENOBUFS;
3878}
3879
3880
c5121837
JM		 3881static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
3882{
3883 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3884 struct sockaddr_ll lladdr;
3885 unsigned char buf[3000];
3886 int len;
3887 socklen_t fromlen = sizeof(lladdr);
3888
3889 len = recvfrom(sock, buf, sizeof(buf), 0,
3890 (struct sockaddr *)&lladdr, &fromlen);
3891 if (len < 0) {
3892 perror("recv");
3893 return;
3894 }
3895
3896 if (have_ifidx(drv, lladdr.sll_ifindex)) {
4b9841d3
JM		 3897 void *ctx;
3898 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
3899 if (!ctx)
c5121837 3900 return;
4b9841d3 3901 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
c5121837
JM		 3902 }
3903}
3904
3905
c5121837
JM		 3906static int i802_get_inact_sec(void *priv, const u8 *addr)
3907{
3908 struct hostap_sta_driver_data data;
3909 int ret;
3910
3911 data.inactive_msec = (unsigned long) -1;
3912 ret = i802_read_sta_data(priv, &data, addr);
3913 if (ret || data.inactive_msec == (unsigned long) -1)
3914 return -1;
3915 return data.inactive_msec / 1000;
3916}
3917
3918
3919static int i802_sta_clear_stats(void *priv, const u8 *addr)
3920{
3921#if 0
3922 /* TODO */
3923#endif
3924 return 0;
3925}
3926
3927
731723a5
JM		 3928static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
3929 int reason)
c5121837
JM		 3930{
3931 struct wpa_driver_nl80211_data *drv = priv;
3932 struct ieee80211_mgmt mgmt;
3933
3934 memset(&mgmt, 0, sizeof(mgmt));
3935 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3936 WLAN_FC_STYPE_DEAUTH);
3937 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 3938 memcpy(mgmt.sa, own_addr, ETH_ALEN);
3939 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 3940 mgmt.u.deauth.reason_code = host_to_le16(reason);
9f324b61
JM		 3941 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
3942 IEEE80211_HDRLEN +
3943 sizeof(mgmt.u.deauth));
c5121837
JM		 3944}
3945
3946
731723a5
JM		 3947static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
3948 int reason)
c5121837
JM		 3949{
3950 struct wpa_driver_nl80211_data *drv = priv;
3951 struct ieee80211_mgmt mgmt;
3952
3953 memset(&mgmt, 0, sizeof(mgmt));
3954 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3955 WLAN_FC_STYPE_DISASSOC);
3956 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 3957 memcpy(mgmt.sa, own_addr, ETH_ALEN);
3958 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 3959 mgmt.u.disassoc.reason_code = host_to_le16(reason);
9f324b61
JM		 3960 return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
3961 IEEE80211_HDRLEN +
3962 sizeof(mgmt.u.disassoc));
c5121837
JM		 3963}
3964
3965
92f475b4
JM		 3966static void *i802_init(struct hostapd_data *hapd,
3967 struct wpa_init_params *params)
c5121837
JM		 3968{
3969 struct wpa_driver_nl80211_data *drv;
3970 size_t i;
3971
bbaf0837
JM		 3972 drv = wpa_driver_nl80211_init(hapd, params->ifname);
3973 if (drv == NULL)
c5121837 3974 return NULL;
c5121837 3975
b4fd6fab 3976 drv->bss.ifindex = drv->ifindex;
c5121837
JM		 3977
3978 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
3979 drv->if_indices = drv->default_if_indices;
92f475b4
JM		 3980 for (i = 0; i < params->num_bridge; i++) {
3981 if (params->bridge[i])
3982 add_ifidx(drv, if_nametoindex(params->bridge[i]));
c5121837 3983 }
c5121837 3984
ad1e68e6
JM		 3985 /* start listening for EAPOL on the default AP interface */
3986 add_ifidx(drv, drv->ifindex);
3987
460456f8
JM		 3988 if (params->bssid) {
3989 if (hostapd_set_iface_flags(drv, drv->ifname, 0))
3990 goto failed;
ad1e68e6 3991
460456f8
JM		 3992 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
3993 goto failed;
3994 }
ad1e68e6
JM		 3995
3996 if (nl80211_set_mode(drv, drv->ifindex, NL80211_IFTYPE_AP)) {
3997 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
3998 "into AP mode", drv->ifname);
bbaf0837 3999 goto failed;
ad1e68e6
JM		 4000 }
4001
4002 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
bbaf0837 4003 goto failed;
ad1e68e6
JM		 4004
4005 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4006 if (drv->eapol_sock < 0) {
4007 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
bbaf0837 4008 goto failed;
ad1e68e6
JM		 4009 }
4010
4011 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4012 {
4013 printf("Could not register read socket for eapol\n");
c5121837 4014 goto failed;
ad1e68e6
JM		 4015 }
4016
412036f5 4017 if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
bbaf0837 4018 goto failed;
c5121837 4019
c5121837
JM		 4020 return drv;
4021
4022failed:
460456f8 4023 nl80211_remove_monitor_interface(drv);
c5121837
JM		 4024 if (drv->ioctl_sock >= 0)
4025 close(drv->ioctl_sock);
c5121837
JM		 4026
4027 genl_family_put(drv->nl80211);
4028 nl_cache_free(drv->nl_cache);
4029 nl_handle_destroy(drv->nl_handle);
4030 nl_cb_put(drv->nl_cb);
4031
bbaf0837
JM		 4032 os_free(drv);
4033 return NULL;
4034}
c5121837 4035
c5121837 4036
bbaf0837
JM		 4037static void i802_deinit(void *priv)
4038{
4039 wpa_driver_nl80211_deinit(priv);
c5121837
JM		 4040}
4041
4042#endif /* HOSTAPD */
4043
4044
3f5285e8
JM		 4045const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4046 .name = "nl80211",
4047 .desc = "Linux nl80211/cfg80211",
c811d5bc 4048#ifndef HOSTAPD
3f5285e8
JM		 4049 .get_bssid = wpa_driver_nl80211_get_bssid,
4050 .get_ssid = wpa_driver_nl80211_get_ssid,
3f5285e8 4051 .set_key = wpa_driver_nl80211_set_key,
c811d5bc 4052#endif /* HOSTAPD */
6a1063e0 4053 .scan2 = wpa_driver_nl80211_scan,
3f5285e8 4054 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
c811d5bc 4055#ifndef HOSTAPD
3f5285e8
JM		 4056 .deauthenticate = wpa_driver_nl80211_deauthenticate,
4057 .disassociate = wpa_driver_nl80211_disassociate,
c2a04078 4058 .authenticate = wpa_driver_nl80211_authenticate,
3f5285e8 4059 .associate = wpa_driver_nl80211_associate,
3f5285e8
JM		 4060 .init = wpa_driver_nl80211_init,
4061 .deinit = wpa_driver_nl80211_deinit,
3f5285e8
JM		 4062 .get_capa = wpa_driver_nl80211_get_capa,
4063 .set_operstate = wpa_driver_nl80211_set_operstate,
01652550 4064 .set_supp_port = wpa_driver_nl80211_set_supp_port,
c811d5bc 4065#endif /* HOSTAPD */
6d158490 4066 .set_country = wpa_driver_nl80211_set_country,
ad1e68e6 4067 .set_mode = wpa_driver_nl80211_set_mode,
d2440ba0
JM		 4068#ifdef CONFIG_AP
4069 .set_beacon = wpa_driver_nl80211_set_beacon,
d2440ba0 4070#endif /* CONFIG_AP */
c3965310 4071#if defined(CONFIG_AP) || defined(HOSTAPD)
071f8ac4 4072 .send_mlme = wpa_driver_nl80211_send_mlme,
b4fd6fab 4073 .set_beacon_int = wpa_driver_nl80211_set_beacon_int,
c3965310 4074 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
0f4e8b4f
JM		 4075 .sta_add = wpa_driver_nl80211_sta_add,
4076 .sta_remove = wpa_driver_nl80211_sta_remove,
db149ac9 4077 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
a8d6ffa4 4078 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
c3965310 4079#endif /* CONFIG_AP || HOSTAPD */
c5121837
JM		 4080#ifdef HOSTAPD
4081 .hapd_init = i802_init,
c5121837
JM		 4082 .hapd_deinit = i802_deinit,
4083 .hapd_set_key = i802_set_key,
4084 .get_seqnum = i802_get_seqnum,
4085 .flush = i802_flush,
4086 .read_sta_data = i802_read_sta_data,
c5121837
JM		 4087 .sta_deauth = i802_sta_deauth,
4088 .sta_disassoc = i802_sta_disassoc,
c5121837
JM		 4089 .get_inact_sec = i802_get_inact_sec,
4090 .sta_clear_stats = i802_sta_clear_stats,
4091 .set_freq = i802_set_freq,
4092 .set_rts = i802_set_rts,
4093 .set_frag = i802_set_frag,
c5121837
JM		 4094 .set_rate_sets = i802_set_rate_sets,
4095 .hapd_set_beacon = i802_set_beacon,
c5121837
JM		 4096 .set_cts_protect = i802_set_cts_protect,
4097 .set_preamble = i802_set_preamble,
4098 .set_short_slot_time = i802_set_short_slot_time,
4099 .set_tx_queue_params = i802_set_tx_queue_params,
4100 .bss_add = i802_bss_add,
4101 .bss_remove = i802_bss_remove,
4102 .if_add = i802_if_add,
4103 .if_update = i802_if_update,
4104 .if_remove = i802_if_remove,
c5121837 4105 .set_sta_vlan = i802_set_sta_vlan,
c5121837 4106#endif /* HOSTAPD */
3f5285e8 4107};
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