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nl80211: Refactor Action frame TX
[thirdparty/hostap.git] / src / drivers / driver_nl80211.c
CommitLineData
3f5285e8 1/*
c5121837 2 * Driver interaction with Linux nl80211/cfg80211
8d923a4a 3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
072ad14c
JM		 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
58f6fbe0 7 * Copyright (c) 2009-2010, Atheros Communications
3f5285e8
JM		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * Alternatively, this software may be distributed under the terms of BSD
14 * license.
15 *
16 * See README and COPYING for more details.
17 */
18
19#include "includes.h"
20#include <sys/ioctl.h>
37b7d082 21#include <net/if.h>
3f5285e8
JM		 22#include <netlink/genl/genl.h>
23#include <netlink/genl/family.h>
24#include <netlink/genl/ctrl.h>
8602b0f2 25#include <linux/rtnetlink.h>
1b648c7e
JM		 26#include <netpacket/packet.h>
27#include <linux/filter.h>
7e45830a 28#include "nl80211_copy.h"
625f587b 29
3f5285e8 30#include "common.h"
1b648c7e
JM		 31#include "eloop.h"
32#include "common/ieee802_11_defs.h"
e2d02c29 33#include "netlink.h"
34f2f814 34#include "linux_ioctl.h"
e2d02c29
JM		 35#include "radiotap.h"
36#include "radiotap_iter.h"
8401a6b0 37#include "rfkill.h"
1b648c7e 38#include "driver.h"
0915d02c 39
c5121837
JM		 40#ifdef CONFIG_LIBNL20
41/* libnl 2.0 compatibility code */
2e8eac2d 42#define nl_handle nl_sock
a65a9aed
JB		 43#define nl80211_handle_alloc nl_socket_alloc_cb
44#define nl80211_handle_destroy nl_socket_free
45#else
46/*
47 * libnl 1.1 has a bug, it tries to allocate socket numbers densely
48 * but when you free a socket again it will mess up its bitmap and
49 * and use the wrong number the next time it needs a socket ID.
50 * Therefore, we wrap the handle alloc/destroy and add our own pid
51 * accounting.
52 */
53static uint32_t port_bitmap[32] = { 0 };
54
55static struct nl_handle *nl80211_handle_alloc(void *cb)
56{
57 struct nl_handle *handle;
58 uint32_t pid = getpid() & 0x3FFFFF;
59 int i;
60
61 handle = nl_handle_alloc_cb(cb);
62
63 for (i = 0; i < 1024; i++) {
64 if (port_bitmap[i / 32] & (1 << (i % 32)))
65 continue;
66 port_bitmap[i / 32] |= 1 << (i % 32);
67 pid += i << 22;
68 break;
69 }
70
71 nl_socket_set_local_port(handle, pid);
72
73 return handle;
74}
75
76static void nl80211_handle_destroy(struct nl_handle *handle)
77{
78 uint32_t port = nl_socket_get_local_port(handle);
79
80 port >>= 22;
81 port_bitmap[port / 32] &= ~(1 << (port % 32));
82
83 nl_handle_destroy(handle);
84}
c5121837
JM		 85#endif /* CONFIG_LIBNL20 */
86
c5121837 87
3f5285e8
JM		 88#ifndef IFF_LOWER_UP
89#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
90#endif
91#ifndef IFF_DORMANT
92#define IFF_DORMANT 0x20000 /* driver signals dormant */
93#endif
94
95#ifndef IF_OPER_DORMANT
96#define IF_OPER_DORMANT 5
97#endif
98#ifndef IF_OPER_UP
99#define IF_OPER_UP 6
100#endif
101
c5121837 102struct i802_bss {
a2e40bb6 103 struct wpa_driver_nl80211_data *drv;
c5121837 104 struct i802_bss *next;
b4fd6fab 105 int ifindex;
a2e40bb6 106 char ifname[IFNAMSIZ + 1];
c5121837
JM		 107 unsigned int beacon_set:1;
108};
3f5285e8
JM		 109
110struct wpa_driver_nl80211_data {
111 void *ctx;
08063178 112 struct netlink_data *netlink;
c5121837 113 int ioctl_sock; /* socket for ioctl() use */
94627f6c 114 char brname[IFNAMSIZ];
3f5285e8 115 int ifindex;
7524cfb1 116 int if_removed;
a63063b4 117 int if_disabled;
8401a6b0 118 struct rfkill_data *rfkill;
c2a04078
JM		 119 struct wpa_driver_capa capa;
120 int has_capability;
c2a04078 121
3f5285e8
JM		 122 int operstate;
123
3f5285e8
JM		 124 int scan_complete_events;
125
126 struct nl_handle *nl_handle;
335ce76b 127 struct nl_handle *nl_handle_event;
3f5285e8 128 struct nl_cache *nl_cache;
335ce76b 129 struct nl_cache *nl_cache_event;
3f5285e8
JM		 130 struct nl_cb *nl_cb;
131 struct genl_family *nl80211;
1c873584 132
e6b8efeb 133 u8 auth_bssid[ETH_ALEN];
c2a04078
JM		 134 u8 bssid[ETH_ALEN];
135 int associated;
fd05d64e
JM		 136 u8 ssid[32];
137 size_t ssid_len;
ad1e68e6
JM		 138 int nlmode;
139 int ap_scan_as_station;
4832ecd7 140 unsigned int assoc_freq;
d2440ba0 141
0915d02c
JM		 142 int monitor_sock;
143 int monitor_ifidx;
504e905c 144 int probe_req_report;
4e5cb1a3 145 int disable_11b_rates;
7da3abe7 146
55777702 147 unsigned int pending_remain_on_chan:1;
94627f6c
JM		 148 unsigned int added_bridge:1;
149 unsigned int added_if_into_bridge:1;
55777702
JM		 150
151 u64 remain_on_chan_cookie;
58f6fbe0 152 u64 send_action_cookie;
c5121837 153
3812464c
JM		 154 struct wpa_driver_scan_filter *filter_ssids;
155 size_t num_filter_ssids;
156
a2e40bb6
FF		 157 struct i802_bss first_bss;
158
c5121837 159#ifdef HOSTAPD
c5121837 160 int eapol_sock; /* socket for EAPOL frames */
c5121837
JM		 161
162 int default_if_indices[16];
163 int *if_indices;
164 int num_if_indices;
165
c5121837
JM		 166 int last_freq;
167 int last_freq_ht;
c5121837 168#endif /* HOSTAPD */
3f5285e8
JM		 169};
170
171
172static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
173 void *timeout_ctx);
ad1e68e6 174static int wpa_driver_nl80211_set_mode(void *priv, int mode);
362f781e 175static int
7524cfb1 176wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
d72aad94 177static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
77339912
JM		 178 const u8 *addr, int cmd, u16 reason_code,
179 int local_state_change);
460456f8
JM		 180static void nl80211_remove_monitor_interface(
181 struct wpa_driver_nl80211_data *drv);
0915d02c 182
072ad14c 183#ifdef HOSTAPD
2135f224
JM		 184static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
185static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
97cfcf64 186static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
fbbfcbac
FF		 187static int wpa_driver_nl80211_if_remove(void *priv,
188 enum wpa_driver_if_type type,
189 const char *ifname);
37eb8da9
JM		 190#else /* HOSTAPD */
191static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
192{
193 return 0;
194}
072ad14c
JM		 195#endif /* HOSTAPD */
196
e3802622 197static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
504e905c
JM		 198static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
199 void *timeout_ctx);
4e5cb1a3
JM		 200static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
201 int ifindex, int disabled);
504e905c 202
3f5285e8 203
6241fcb1
JM		 204/* nl80211 code */
205static int ack_handler(struct nl_msg *msg, void *arg)
206{
207 int *err = arg;
208 *err = 0;
209 return NL_STOP;
210}
211
212static int finish_handler(struct nl_msg *msg, void *arg)
213{
8e8df255
JM		 214 int *ret = arg;
215 *ret = 0;
6241fcb1
JM		 216 return NL_SKIP;
217}
218
219static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
220 void *arg)
221{
222 int *ret = arg;
223 *ret = err->error;
224 return NL_SKIP;
225}
226
5b7b85f6
JM		 227
228static int no_seq_check(struct nl_msg *msg, void *arg)
229{
230 return NL_OK;
231}
232
233
58f6fbe0
JM		 234static int send_and_recv(struct wpa_driver_nl80211_data *drv,
235 struct nl_handle *nl_handle, struct nl_msg *msg,
236 int (*valid_handler)(struct nl_msg *, void *),
237 void *valid_data)
6241fcb1
JM		 238{
239 struct nl_cb *cb;
240 int err = -ENOMEM;
241
242 cb = nl_cb_clone(drv->nl_cb);
243 if (!cb)
244 goto out;
245
58f6fbe0 246 err = nl_send_auto_complete(nl_handle, msg);
6241fcb1
JM		 247 if (err < 0)
248 goto out;
249
250 err = 1;
251
252 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
8e8df255 253 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
6241fcb1
JM		 254 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
255
256 if (valid_handler)
257 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
258 valid_handler, valid_data);
259
260 while (err > 0)
58f6fbe0 261 nl_recvmsgs(nl_handle, cb);
6241fcb1
JM		 262 out:
263 nl_cb_put(cb);
264 nlmsg_free(msg);
265 return err;
266}
267
268
58f6fbe0
JM		 269static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
270 struct nl_msg *msg,
271 int (*valid_handler)(struct nl_msg *, void *),
272 void *valid_data)
273{
274 return send_and_recv(drv, drv->nl_handle, msg, valid_handler,
275 valid_data);
276}
277
278
97865538
JM		 279struct family_data {
280 const char *group;
281 int id;
282};
283
284
285static int family_handler(struct nl_msg *msg, void *arg)
286{
287 struct family_data *res = arg;
288 struct nlattr *tb[CTRL_ATTR_MAX + 1];
289 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
290 struct nlattr *mcgrp;
291 int i;
292
293 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
294 genlmsg_attrlen(gnlh, 0), NULL);
295 if (!tb[CTRL_ATTR_MCAST_GROUPS])
296 return NL_SKIP;
297
298 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
299 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
300 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
301 nla_len(mcgrp), NULL);
302 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
303 !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
304 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
305 res->group,
306 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
307 continue;
308 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
309 break;
310 };
311
312 return NL_SKIP;
313}
314
315
316static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
317 const char *family, const char *group)
318{
319 struct nl_msg *msg;
320 int ret = -1;
321 struct family_data res = { group, -ENOENT };
322
323 msg = nlmsg_alloc();
324 if (!msg)
325 return -ENOMEM;
326 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
327 0, 0, CTRL_CMD_GETFAMILY, 0);
328 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
329
330 ret = send_and_recv_msgs(drv, msg, family_handler, &res);
331 msg = NULL;
332 if (ret == 0)
333 ret = res.id;
334
335nla_put_failure:
336 nlmsg_free(msg);
337 return ret;
338}
339
340
3f5285e8
JM		 341static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
342{
a2e40bb6
FF		 343 struct i802_bss *bss = priv;
344 struct wpa_driver_nl80211_data *drv = bss->drv;
c2a04078
JM		 345 if (!drv->associated)
346 return -1;
347 os_memcpy(bssid, drv->bssid, ETH_ALEN);
348 return 0;
3f5285e8
JM		 349}
350
351
3f5285e8
JM		 352static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
353{
a2e40bb6
FF		 354 struct i802_bss *bss = priv;
355 struct wpa_driver_nl80211_data *drv = bss->drv;
fd05d64e
JM		 356 if (!drv->associated)
357 return -1;
358 os_memcpy(ssid, drv->ssid, drv->ssid_len);
359 return drv->ssid_len;
3f5285e8
JM		 360}
361
362
7524cfb1 363static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
08063178 364 char *buf, size_t len, int del)
3f5285e8
JM		 365{
366 union wpa_event_data event;
367
368 os_memset(&event, 0, sizeof(event));
369 if (len > sizeof(event.interface_status.ifname))
370 len = sizeof(event.interface_status.ifname) - 1;
371 os_memcpy(event.interface_status.ifname, buf, len);
372 event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
373 EVENT_INTERFACE_ADDED;
374
375 wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
376 del ? "DEL" : "NEW",
377 event.interface_status.ifname,
378 del ? "removed" : "added");
379
a2e40bb6 380 if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
7524cfb1
JM		 381 if (del)
382 drv->if_removed = 1;
383 else
384 drv->if_removed = 0;
385 }
386
08063178 387 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
3f5285e8
JM		 388}
389
390
7524cfb1 391static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
62d680c3 392 u8 *buf, size_t len)
7524cfb1 393{
62d680c3 394 int attrlen, rta_len;
7524cfb1
JM		 395 struct rtattr *attr;
396
62d680c3
JM		 397 attrlen = len;
398 attr = (struct rtattr *) buf;
7524cfb1
JM		 399
400 rta_len = RTA_ALIGN(sizeof(struct rtattr));
401 while (RTA_OK(attr, attrlen)) {
402 if (attr->rta_type == IFLA_IFNAME) {
a2e40bb6 403 if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
7524cfb1
JM		 404 == 0)
405 return 1;
406 else
407 break;
408 }
409 attr = RTA_NEXT(attr, attrlen);
410 }
411
412 return 0;
413}
414
415
416static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
62d680c3 417 int ifindex, u8 *buf, size_t len)
7524cfb1
JM		 418{
419 if (drv->ifindex == ifindex)
420 return 1;
421
62d680c3 422 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
a2e40bb6 423 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
7524cfb1
JM		 424 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
425 "interface");
426 wpa_driver_nl80211_finish_drv_init(drv);
427 return 1;
428 }
429
430 return 0;
431}
432
433
62d680c3
JM		 434static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
435 struct ifinfomsg *ifi,
436 u8 *buf, size_t len)
3f5285e8 437{
08063178 438 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 439 int attrlen, rta_len;
440 struct rtattr *attr;
97cfcf64 441 u32 brid = 0;
3f5285e8 442
97cfcf64
B		 443 if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len) &&
444 !have_ifidx(drv, ifi->ifi_index)) {
445 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
446 "ifindex %d", ifi->ifi_index);
3f5285e8
JM		 447 return;
448 }
449
450 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
451 "(%s%s%s%s)",
452 drv->operstate, ifi->ifi_flags,
453 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
454 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
455 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
456 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
a63063b4
JM		 457
458 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
459 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
460 drv->if_disabled = 1;
461 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED, NULL);
462 }
463
464 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
465 wpa_printf(MSG_DEBUG, "nl80211: Interface up");
466 drv->if_disabled = 0;
467 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, NULL);
468 }
469
3f5285e8
JM		 470 /*
471 * Some drivers send the association event before the operup event--in
472 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
473 * fails. This will hit us when wpa_supplicant does not need to do
474 * IEEE 802.1X authentication
475 */
476 if (drv->operstate == 1 &&
477 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
478 !(ifi->ifi_flags & IFF_RUNNING))
08063178 479 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 480 -1, IF_OPER_UP);
3f5285e8 481
62d680c3
JM		 482 attrlen = len;
483 attr = (struct rtattr *) buf;
3f5285e8
JM		 484 rta_len = RTA_ALIGN(sizeof(struct rtattr));
485 while (RTA_OK(attr, attrlen)) {
d8816397 486 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 487 wpa_driver_nl80211_event_link(
08063178 488 drv,
7524cfb1
JM		 489 ((char *) attr) + rta_len,
490 attr->rta_len - rta_len, 0);
97cfcf64
B		 491 } else if (attr->rta_type == IFLA_MASTER)
492 brid = nla_get_u32((struct nlattr *) attr);
3f5285e8
JM		 493 attr = RTA_NEXT(attr, attrlen);
494 }
97cfcf64 495
37eb8da9 496#ifdef HOSTAPD
97cfcf64
B		 497 if (ifi->ifi_family == AF_BRIDGE && brid) {
498 /* device has been added to bridge */
499 char namebuf[IFNAMSIZ];
500 if_indextoname(brid, namebuf);
501 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
502 brid, namebuf);
503 add_ifidx(drv, brid);
504 }
37eb8da9 505#endif /* HOSTAPD */
3f5285e8
JM		 506}
507
508
62d680c3
JM		 509static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
510 struct ifinfomsg *ifi,
511 u8 *buf, size_t len)
3f5285e8 512{
08063178 513 struct wpa_driver_nl80211_data *drv = ctx;
62d680c3
JM		 514 int attrlen, rta_len;
515 struct rtattr *attr;
97cfcf64 516 u32 brid = 0;
3f5285e8 517
62d680c3
JM		 518 attrlen = len;
519 attr = (struct rtattr *) buf;
3f5285e8
JM		 520
521 rta_len = RTA_ALIGN(sizeof(struct rtattr));
522 while (RTA_OK(attr, attrlen)) {
523 if (attr->rta_type == IFLA_IFNAME) {
7524cfb1 524 wpa_driver_nl80211_event_link(
08063178 525 drv,
7524cfb1
JM		 526 ((char *) attr) + rta_len,
527 attr->rta_len - rta_len, 1);
97cfcf64
B		 528 } else if (attr->rta_type == IFLA_MASTER)
529 brid = nla_get_u32((struct nlattr *) attr);
3f5285e8
JM		 530 attr = RTA_NEXT(attr, attrlen);
531 }
97cfcf64 532
37eb8da9 533#ifdef HOSTAPD
97cfcf64
B		 534 if (ifi->ifi_family == AF_BRIDGE && brid) {
535 /* device has been removed from bridge */
536 char namebuf[IFNAMSIZ];
537 if_indextoname(brid, namebuf);
538 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
539 "%s", brid, namebuf);
540 del_ifidx(drv, brid);
541 }
37eb8da9 542#endif /* HOSTAPD */
3f5285e8
JM		 543}
544
545
c2a04078
JM		 546static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
547 const u8 *frame, size_t len)
548{
549 const struct ieee80211_mgmt *mgmt;
550 union wpa_event_data event;
551
552 mgmt = (const struct ieee80211_mgmt *) frame;
553 if (len < 24 + sizeof(mgmt->u.auth)) {
554 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
555 "frame");
556 return;
557 }
558
e6b8efeb 559 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
c2a04078
JM		 560 os_memset(&event, 0, sizeof(event));
561 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
562 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
563 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
564 if (len > 24 + sizeof(mgmt->u.auth)) {
565 event.auth.ies = mgmt->u.auth.variable;
566 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
567 }
568
569 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
570}
571
572
573static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
574 const u8 *frame, size_t len)
575{
576 const struct ieee80211_mgmt *mgmt;
577 union wpa_event_data event;
578 u16 status;
579
580 mgmt = (const struct ieee80211_mgmt *) frame;
581 if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
582 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
583 "frame");
584 return;
585 }
586
587 status = le_to_host16(mgmt->u.assoc_resp.status_code);
588 if (status != WLAN_STATUS_SUCCESS) {
efa46078
JM		 589 os_memset(&event, 0, sizeof(event));
590 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
591 event.assoc_reject.resp_ies =
592 (u8 *) mgmt->u.assoc_resp.variable;
593 event.assoc_reject.resp_ies_len =
594 len - 24 - sizeof(mgmt->u.assoc_resp);
595 }
596 event.assoc_reject.status_code = status;
597
598 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
c2a04078
JM		 599 return;
600 }
601
602 drv->associated = 1;
603 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
604
605 os_memset(&event, 0, sizeof(event));
606 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
607 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
608 event.assoc_info.resp_ies_len =
efa46078 609 len - 24 - sizeof(mgmt->u.assoc_resp);
c2a04078
JM		 610 }
611
4832ecd7
JM		 612 event.assoc_info.freq = drv->assoc_freq;
613
c2a04078
JM		 614 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
615}
616
c1bb3e0a 617
da72a1c1
ZY		 618static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
619 enum nl80211_commands cmd, struct nlattr *status,
620 struct nlattr *addr, struct nlattr *req_ie,
621 struct nlattr *resp_ie)
622{
623 union wpa_event_data event;
624
7da2c527
JM		 625 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
626 /*
627 * Avoid reporting two association events that would confuse
628 * the core code.
629 */
630 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
631 "when using userspace SME", cmd);
632 return;
633 }
634
da72a1c1
ZY		 635 os_memset(&event, 0, sizeof(event));
636 if (cmd == NL80211_CMD_CONNECT &&
637 nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
638 if (resp_ie) {
639 event.assoc_reject.resp_ies = nla_data(resp_ie);
640 event.assoc_reject.resp_ies_len = nla_len(resp_ie);
641 }
642 event.assoc_reject.status_code = nla_get_u16(status);
643 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
644 return;
645 }
646
647 drv->associated = 1;
648 if (addr)
649 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
650
651 if (req_ie) {
652 event.assoc_info.req_ies = nla_data(req_ie);
653 event.assoc_info.req_ies_len = nla_len(req_ie);
654 }
655 if (resp_ie) {
656 event.assoc_info.resp_ies = nla_data(resp_ie);
657 event.assoc_info.resp_ies_len = nla_len(resp_ie);
658 }
659
660 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
661}
c2a04078 662
c1bb3e0a 663
da1fb17c
JM		 664static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
665 enum nl80211_commands cmd, struct nlattr *addr)
666{
667 union wpa_event_data event;
668 enum wpa_event_type ev;
669
670 if (nla_len(addr) != ETH_ALEN)
671 return;
672
673 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
674 cmd, MAC2STR((u8 *) nla_data(addr)));
675
676 if (cmd == NL80211_CMD_AUTHENTICATE)
677 ev = EVENT_AUTH_TIMED_OUT;
678 else if (cmd == NL80211_CMD_ASSOCIATE)
679 ev = EVENT_ASSOC_TIMED_OUT;
680 else
681 return;
682
683 os_memset(&event, 0, sizeof(event));
684 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
685 wpa_supplicant_event(drv->ctx, ev, &event);
686}
687
688
58f6fbe0
JM		 689static void mlme_event_action(struct wpa_driver_nl80211_data *drv,
690 struct nlattr *freq, const u8 *frame, size_t len)
691{
692 const struct ieee80211_mgmt *mgmt;
693 union wpa_event_data event;
694 u16 fc, stype;
695
696 mgmt = (const struct ieee80211_mgmt *) frame;
697 if (len < 24) {
698 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
699 return;
700 }
701
702 fc = le_to_host16(mgmt->frame_control);
703 stype = WLAN_FC_GET_STYPE(fc);
704
705 os_memset(&event, 0, sizeof(event));
706 event.rx_action.da = mgmt->da;
707 event.rx_action.sa = mgmt->sa;
708 event.rx_action.bssid = mgmt->bssid;
709 event.rx_action.category = mgmt->u.action.category;
710 event.rx_action.data = &mgmt->u.action.category + 1;
711 event.rx_action.len = frame + len - event.rx_action.data;
712 if (freq)
713 event.rx_action.freq = nla_get_u32(freq);
714 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
715}
716
717
718static void mlme_event_action_tx_status(struct wpa_driver_nl80211_data *drv,
719 struct nlattr *cookie, const u8 *frame,
720 size_t len, struct nlattr *ack)
721{
722 union wpa_event_data event;
723 const struct ieee80211_hdr *hdr;
724 u16 fc;
725 u64 cookie_val;
726
727 if (!cookie)
728 return;
729
730 cookie_val = nla_get_u64(cookie);
4796272f
JM		 731 wpa_printf(MSG_DEBUG, "nl80211: Action TX status: cookie=0%llx%s "
732 "(ack=%d)",
58f6fbe0
JM		 733 (long long unsigned int) cookie_val,
734 cookie_val == drv->send_action_cookie ?
4796272f 735 " (match)" : " (unknown)", ack != NULL);
58f6fbe0
JM		 736 if (cookie_val != drv->send_action_cookie)
737 return;
738
739 hdr = (const struct ieee80211_hdr *) frame;
740 fc = le_to_host16(hdr->frame_control);
741
742 os_memset(&event, 0, sizeof(event));
743 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
744 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
745 event.tx_status.dst = hdr->addr1;
746 event.tx_status.data = frame;
747 event.tx_status.data_len = len;
748 event.tx_status.ack = ack != NULL;
749 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
750}
751
752
0544b242
JM		 753static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
754 enum wpa_event_type type,
755 const u8 *frame, size_t len)
756{
757 const struct ieee80211_mgmt *mgmt;
758 union wpa_event_data event;
759 const u8 *bssid = NULL;
760 u16 reason_code = 0;
761
cb30b297
PS		 762 mgmt = (const struct ieee80211_mgmt *) frame;
763 if (len >= 24) {
764 bssid = mgmt->bssid;
765
766 if (drv->associated != 0 &&
767 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
768 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
769 /*
770 * We have presumably received this deauth as a
771 * response to a clear_state_mismatch() outgoing
772 * deauth. Don't let it take us offline!
773 */
774 wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
775 "from Unknown BSSID " MACSTR " -- ignoring",
776 MAC2STR(bssid));
777 return;
778 }
779 }
780
0544b242
JM		 781 drv->associated = 0;
782 os_memset(&event, 0, sizeof(event));
783
0544b242
JM		 784 /* Note: Same offset for Reason Code in both frame subtypes */
785 if (len >= 24 + sizeof(mgmt->u.deauth))
786 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
787
788 if (type == EVENT_DISASSOC) {
789 event.disassoc_info.addr = bssid;
790 event.disassoc_info.reason_code = reason_code;
046b26a2
JM		 791 if (frame + len > mgmt->u.disassoc.variable) {
792 event.disassoc_info.ie = mgmt->u.disassoc.variable;
793 event.disassoc_info.ie_len = frame + len -
794 mgmt->u.disassoc.variable;
795 }
0544b242
JM		 796 } else {
797 event.deauth_info.addr = bssid;
798 event.deauth_info.reason_code = reason_code;
046b26a2
JM		 799 if (frame + len > mgmt->u.deauth.variable) {
800 event.deauth_info.ie = mgmt->u.deauth.variable;
801 event.deauth_info.ie_len = frame + len -
802 mgmt->u.deauth.variable;
803 }
0544b242
JM		 804 }
805
806 wpa_supplicant_event(drv->ctx, type, &event);
807}
808
809
c2a04078 810static void mlme_event(struct wpa_driver_nl80211_data *drv,
da1fb17c 811 enum nl80211_commands cmd, struct nlattr *frame,
58f6fbe0
JM		 812 struct nlattr *addr, struct nlattr *timed_out,
813 struct nlattr *freq, struct nlattr *ack,
814 struct nlattr *cookie)
c2a04078 815{
da1fb17c
JM		 816 if (timed_out && addr) {
817 mlme_timeout_event(drv, cmd, addr);
818 return;
819 }
820
c2a04078
JM		 821 if (frame == NULL) {
822 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
823 "data", cmd);
824 return;
825 }
826
827 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
828 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
829 nla_data(frame), nla_len(frame));
830
831 switch (cmd) {
832 case NL80211_CMD_AUTHENTICATE:
833 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
834 break;
835 case NL80211_CMD_ASSOCIATE:
836 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
837 break;
838 case NL80211_CMD_DEAUTHENTICATE:
0544b242
JM		 839 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
840 nla_data(frame), nla_len(frame));
c2a04078
JM		 841 break;
842 case NL80211_CMD_DISASSOCIATE:
0544b242
JM		 843 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
844 nla_data(frame), nla_len(frame));
c2a04078 845 break;
bd94971e 846 case NL80211_CMD_FRAME:
58f6fbe0
JM		 847 mlme_event_action(drv, freq, nla_data(frame), nla_len(frame));
848 break;
bd94971e 849 case NL80211_CMD_FRAME_TX_STATUS:
58f6fbe0
JM		 850 mlme_event_action_tx_status(drv, cookie, nla_data(frame),
851 nla_len(frame), ack);
852 break;
c2a04078
JM		 853 default:
854 break;
855 }
856}
857
858
35583f3f
JM		 859static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
860 struct nlattr *tb[])
861{
862 union wpa_event_data data;
863
864 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
865 os_memset(&data, 0, sizeof(data));
866 if (tb[NL80211_ATTR_MAC]) {
867 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
868 nla_data(tb[NL80211_ATTR_MAC]),
869 nla_len(tb[NL80211_ATTR_MAC]));
ad1e68e6 870 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
35583f3f
JM		 871 }
872 if (tb[NL80211_ATTR_KEY_SEQ]) {
873 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
874 nla_data(tb[NL80211_ATTR_KEY_SEQ]),
875 nla_len(tb[NL80211_ATTR_KEY_SEQ]));
876 }
877 if (tb[NL80211_ATTR_KEY_TYPE]) {
878 enum nl80211_key_type key_type =
879 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
880 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
881 if (key_type == NL80211_KEYTYPE_PAIRWISE)
882 data.michael_mic_failure.unicast = 1;
883 } else
884 data.michael_mic_failure.unicast = 1;
885
886 if (tb[NL80211_ATTR_KEY_IDX]) {
887 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
888 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
889 }
890
891 wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
892}
893
894
5cc4d64b
JM		 895static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
896 struct nlattr *tb[])
897{
898 if (tb[NL80211_ATTR_MAC] == NULL) {
899 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
900 "event");
901 return;
902 }
903 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
904 drv->associated = 1;
905 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
906 MAC2STR(drv->bssid));
907
908 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
909}
910
911
55777702
JM		 912static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
913 int cancel_event, struct nlattr *tb[])
914{
915 unsigned int freq, chan_type, duration;
916 union wpa_event_data data;
917 u64 cookie;
918
919 if (tb[NL80211_ATTR_WIPHY_FREQ])
920 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
921 else
922 freq = 0;
923
924 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
925 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
926 else
927 chan_type = 0;
928
929 if (tb[NL80211_ATTR_DURATION])
930 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
931 else
932 duration = 0;
933
934 if (tb[NL80211_ATTR_COOKIE])
935 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
936 else
937 cookie = 0;
938
939 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
940 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
941 cancel_event, freq, chan_type, duration,
942 (long long unsigned int) cookie,
943 cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
944
945 if (cookie != drv->remain_on_chan_cookie)
946 return; /* not for us */
947
948 drv->pending_remain_on_chan = !cancel_event;
949
950 os_memset(&data, 0, sizeof(data));
951 data.remain_on_channel.freq = freq;
952 data.remain_on_channel.duration = duration;
953 wpa_supplicant_event(drv->ctx, cancel_event ?
954 EVENT_CANCEL_REMAIN_ON_CHANNEL :
955 EVENT_REMAIN_ON_CHANNEL, &data);
956}
957
958
8d923a4a
JM		 959static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
960 struct nlattr *tb[])
961{
962 union wpa_event_data event;
963 struct nlattr *nl;
964 int rem;
965 struct scan_info *info;
966#define MAX_REPORT_FREQS 50
967 int freqs[MAX_REPORT_FREQS];
968 int num_freqs = 0;
969
970 os_memset(&event, 0, sizeof(event));
971 info = &event.scan_info;
972 info->aborted = aborted;
973
974 if (tb[NL80211_ATTR_SCAN_SSIDS]) {
975 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
976 struct wpa_driver_scan_ssid *s =
977 &info->ssids[info->num_ssids];
978 s->ssid = nla_data(nl);
979 s->ssid_len = nla_len(nl);
980 info->num_ssids++;
981 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
982 break;
983 }
984 }
985 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
986 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
987 {
988 freqs[num_freqs] = nla_get_u32(nl);
989 num_freqs++;
990 if (num_freqs == MAX_REPORT_FREQS - 1)
991 break;
992 }
993 info->freqs = freqs;
994 info->num_freqs = num_freqs;
995 }
996 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
997}
998
999
60a972a6
JM		 1000static int get_link_signal(struct nl_msg *msg, void *arg)
1001{
1002 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1003 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1004 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1005 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1006 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1007 };
1008 int *sig = arg;
1009
1010 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1011 genlmsg_attrlen(gnlh, 0), NULL);
1012 if (!tb[NL80211_ATTR_STA_INFO] ||
1013 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1014 tb[NL80211_ATTR_STA_INFO], policy))
1015 return NL_SKIP;
1016 if (!sinfo[NL80211_STA_INFO_SIGNAL])
1017 return NL_SKIP;
1018
1019 *sig = (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1020 return NL_SKIP;
1021}
1022
1023
1024static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1025 int *sig)
1026{
1027 struct nl_msg *msg;
1028
1029 *sig = -9999;
1030
1031 msg = nlmsg_alloc();
1032 if (!msg)
1033 return -ENOMEM;
1034
1035 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1036 0, NL80211_CMD_GET_STATION, 0);
1037
1038 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1039 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1040
1041 return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1042 nla_put_failure:
1043 return -ENOBUFS;
1044}
1045
1046
93910401
JM		 1047static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1048 struct nlattr *tb[])
1049{
1050 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1051 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1052 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1053 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1054 };
1055 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1056 enum nl80211_cqm_rssi_threshold_event event;
b625473c 1057 union wpa_event_data ed;
60a972a6 1058 int sig, res;
93910401
JM		 1059
1060 if (tb[NL80211_ATTR_CQM] == NULL ||
1061 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1062 cqm_policy)) {
1063 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1064 return;
1065 }
1066
1067 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1068 return;
1069 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
b625473c
JM		 1070
1071 os_memset(&ed, 0, sizeof(ed));
1072
93910401
JM		 1073 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1074 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1075 "event: RSSI high");
b625473c 1076 ed.signal_change.above_threshold = 1;
93910401
JM		 1077 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1078 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1079 "event: RSSI low");
b625473c
JM		 1080 ed.signal_change.above_threshold = 0;
1081 } else
1082 return;
1083
60a972a6
JM		 1084 res = nl80211_get_link_signal(drv, &sig);
1085 if (res == 0) {
1086 ed.signal_change.current_signal = sig;
1087 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm", sig);
1088 }
1089
b625473c 1090 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
93910401
JM		 1091}
1092
1093
97865538
JM		 1094static int process_event(struct nl_msg *msg, void *arg)
1095{
1096 struct wpa_driver_nl80211_data *drv = arg;
1097 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1098 struct nlattr *tb[NL80211_ATTR_MAX + 1];
0544b242 1099 union wpa_event_data data;
97865538
JM		 1100
1101 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1102 genlmsg_attrlen(gnlh, 0), NULL);
1103
1104 if (tb[NL80211_ATTR_IFINDEX]) {
1105 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
97cfcf64 1106 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
97865538
JM		 1107 wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
1108 " for foreign interface (ifindex %d)",
1109 gnlh->cmd, ifindex);
1110 return NL_SKIP;
1111 }
1112 }
1113
ad1e68e6
JM		 1114 if (drv->ap_scan_as_station &&
1115 (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
1116 gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
a2e40bb6
FF		 1117 wpa_driver_nl80211_set_mode(&drv->first_bss,
1118 IEEE80211_MODE_AP);
ad1e68e6
JM		 1119 drv->ap_scan_as_station = 0;
1120 }
1121
97865538 1122 switch (gnlh->cmd) {
d942a79e
JM		 1123 case NL80211_CMD_TRIGGER_SCAN:
1124 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
1125 break;
97865538
JM		 1126 case NL80211_CMD_NEW_SCAN_RESULTS:
1127 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
1128 drv->scan_complete_events = 1;
1129 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1130 drv->ctx);
8d923a4a 1131 send_scan_event(drv, 0, tb);
97865538
JM		 1132 break;
1133 case NL80211_CMD_SCAN_ABORTED:
1134 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
1135 /*
1136 * Need to indicate that scan results are available in order
1137 * not to make wpa_supplicant stop its scanning.
1138 */
1139 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
1140 drv->ctx);
8d923a4a 1141 send_scan_event(drv, 1, tb);
97865538 1142 break;
c2a04078
JM		 1143 case NL80211_CMD_AUTHENTICATE:
1144 case NL80211_CMD_ASSOCIATE:
1145 case NL80211_CMD_DEAUTHENTICATE:
1146 case NL80211_CMD_DISASSOCIATE:
bd94971e
JB		 1147 case NL80211_CMD_FRAME:
1148 case NL80211_CMD_FRAME_TX_STATUS:
da1fb17c 1149 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
58f6fbe0
JM		 1150 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
1151 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
1152 tb[NL80211_ATTR_COOKIE]);
c2a04078 1153 break;
da72a1c1
ZY		 1154 case NL80211_CMD_CONNECT:
1155 case NL80211_CMD_ROAM:
1156 mlme_event_connect(drv, gnlh->cmd,
1157 tb[NL80211_ATTR_STATUS_CODE],
1158 tb[NL80211_ATTR_MAC],
1159 tb[NL80211_ATTR_REQ_IE],
1160 tb[NL80211_ATTR_RESP_IE]);
1161 break;
1162 case NL80211_CMD_DISCONNECT:
7da2c527
JM		 1163 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1164 /*
1165 * Avoid reporting two disassociation events that could
1166 * confuse the core code.
1167 */
1168 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1169 "event when using userspace SME");
1170 break;
1171 }
da72a1c1 1172 drv->associated = 0;
0544b242
JM		 1173 os_memset(&data, 0, sizeof(data));
1174 if (tb[NL80211_ATTR_REASON_CODE])
1175 data.disassoc_info.reason_code =
1176 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]);
1177 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, &data);
da72a1c1 1178 break;
35583f3f
JM		 1179 case NL80211_CMD_MICHAEL_MIC_FAILURE:
1180 mlme_event_michael_mic_failure(drv, tb);
1181 break;
5cc4d64b
JM		 1182 case NL80211_CMD_JOIN_IBSS:
1183 mlme_event_join_ibss(drv, tb);
1184 break;
55777702
JM		 1185 case NL80211_CMD_REMAIN_ON_CHANNEL:
1186 mlme_event_remain_on_channel(drv, 0, tb);
1187 break;
1188 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
1189 mlme_event_remain_on_channel(drv, 1, tb);
1190 break;
93910401
JM		 1191 case NL80211_CMD_NOTIFY_CQM:
1192 nl80211_cqm_event(drv, tb);
1193 break;
97865538 1194 default:
c2a04078
JM		 1195 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
1196 "(cmd=%d)", gnlh->cmd);
97865538
JM		 1197 break;
1198 }
1199
1200 return NL_SKIP;
1201}
1202
1203
1204static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
1205 void *sock_ctx)
1206{
1207 struct nl_cb *cb;
1208 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1209
1210 wpa_printf(MSG_DEBUG, "nl80211: Event message available");
1211
1212 cb = nl_cb_clone(drv->nl_cb);
1213 if (!cb)
1214 return;
1215 nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
1216 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
335ce76b 1217 nl_recvmsgs(drv->nl_handle_event, cb);
97865538
JM		 1218 nl_cb_put(cb);
1219}
1220
1221
6d158490
LR		 1222/**
1223 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1224 * @priv: driver_nl80211 private data
1225 * @alpha2_arg: country to which to switch to
1226 * Returns: 0 on success, -1 on failure
1227 *
1228 * This asks nl80211 to set the regulatory domain for given
1229 * country ISO / IEC alpha2.
1230 */
1231static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
1232{
a2e40bb6
FF		 1233 struct i802_bss *bss = priv;
1234 struct wpa_driver_nl80211_data *drv = bss->drv;
6d158490
LR		 1235 char alpha2[3];
1236 struct nl_msg *msg;
1237
1238 msg = nlmsg_alloc();
1239 if (!msg)
e785c2ba 1240 return -ENOMEM;
6d158490
LR		 1241
1242 alpha2[0] = alpha2_arg[0];
1243 alpha2[1] = alpha2_arg[1];
1244 alpha2[2] = '\0';
1245
1246 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1247 0, NL80211_CMD_REQ_SET_REG, 0);
1248
1249 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1250 if (send_and_recv_msgs(drv, msg, NULL, NULL))
1251 return -EINVAL;
1252 return 0;
1253nla_put_failure:
1254 return -EINVAL;
1255}
1256
1257
bbaf0837 1258#ifndef HOSTAPD
80bc75f1
JM		 1259struct wiphy_info_data {
1260 int max_scan_ssids;
1581b38b 1261 int ap_supported;
93d11400
ZY		 1262 int auth_supported;
1263 int connect_supported;
80bc75f1
JM		 1264};
1265
1266
1267static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1268{
1269 struct nlattr *tb[NL80211_ATTR_MAX + 1];
1270 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1271 struct wiphy_info_data *info = arg;
1272
1273 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1274 genlmsg_attrlen(gnlh, 0), NULL);
1275
1276 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1277 info->max_scan_ssids =
1278 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1279
1581b38b
JM		 1280 if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1281 struct nlattr *nl_mode;
1282 int i;
1283 nla_for_each_nested(nl_mode,
1284 tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1285 if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1286 info->ap_supported = 1;
1287 break;
1288 }
1289 }
1290 }
1291
93d11400
ZY		 1292 if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1293 struct nlattr *nl_cmd;
1294 int i;
1295
1296 nla_for_each_nested(nl_cmd,
1297 tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1298 u32 cmd = nla_get_u32(nl_cmd);
1299 if (cmd == NL80211_CMD_AUTHENTICATE)
1300 info->auth_supported = 1;
1301 else if (cmd == NL80211_CMD_CONNECT)
1302 info->connect_supported = 1;
1303 }
1304 }
1305
80bc75f1
JM		 1306 return NL_SKIP;
1307}
1308
1309
1310static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1311 struct wiphy_info_data *info)
1312{
1313 struct nl_msg *msg;
1314
1315 os_memset(info, 0, sizeof(*info));
1316 msg = nlmsg_alloc();
1317 if (!msg)
1318 return -1;
1319
1320 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1321 0, NL80211_CMD_GET_WIPHY, 0);
1322
a2e40bb6 1323 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
80bc75f1
JM		 1324
1325 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1326 return 0;
1327 msg = NULL;
1328nla_put_failure:
1329 nlmsg_free(msg);
1330 return -1;
1331}
1332
1333
93d11400 1334static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
80bc75f1
JM		 1335{
1336 struct wiphy_info_data info;
1337 if (wpa_driver_nl80211_get_info(drv, &info))
93d11400 1338 return -1;
80bc75f1 1339 drv->has_capability = 1;
1b2a72e8
JM		 1340 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1341 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1342 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1343 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1344 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1345 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1346 WPA_DRIVER_CAPA_ENC_WEP104 |
1347 WPA_DRIVER_CAPA_ENC_TKIP |
1348 WPA_DRIVER_CAPA_ENC_CCMP;
291b6068
JM		 1349 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1350 WPA_DRIVER_AUTH_SHARED |
1351 WPA_DRIVER_AUTH_LEAP;
1b2a72e8 1352
80bc75f1 1353 drv->capa.max_scan_ssids = info.max_scan_ssids;
1581b38b
JM		 1354 if (info.ap_supported)
1355 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
93d11400
ZY		 1356
1357 if (info.auth_supported)
1358 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1359 else if (!info.connect_supported) {
1360 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1361 "authentication/association or connect commands");
1362 return -1;
1363 }
1364
0194fedb 1365 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
046b26a2 1366 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
814782b9 1367 drv->capa.max_remain_on_chan = 5000;
0194fedb 1368
93d11400 1369 return 0;
80bc75f1 1370}
bbaf0837 1371#endif /* HOSTAPD */
80bc75f1
JM		 1372
1373
ba2d0d7d 1374static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
3f5285e8 1375{
9fff9fdc 1376 int ret;
3f5285e8 1377
9fff9fdc 1378 /* Initialize generic netlink and nl80211 */
3f5285e8
JM		 1379
1380 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1381 if (drv->nl_cb == NULL) {
1382 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1383 "callbacks");
1384 goto err1;
1385 }
1386
a65a9aed 1387 drv->nl_handle = nl80211_handle_alloc(drv->nl_cb);
3f5285e8
JM		 1388 if (drv->nl_handle == NULL) {
1389 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1390 "callbacks");
1391 goto err2;
1392 }
1393
a65a9aed 1394 drv->nl_handle_event = nl80211_handle_alloc(drv->nl_cb);
335ce76b
JM		 1395 if (drv->nl_handle_event == NULL) {
1396 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1397 "callbacks (event)");
1398 goto err2b;
1399 }
1400
3f5285e8
JM		 1401 if (genl_connect(drv->nl_handle)) {
1402 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1403 "netlink");
1404 goto err3;
1405 }
1406
335ce76b
JM		 1407 if (genl_connect(drv->nl_handle_event)) {
1408 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1409 "netlink (event)");
1410 goto err3;
1411 }
1412
9fff9fdc
JM		 1413#ifdef CONFIG_LIBNL20
1414 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1415 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1416 "netlink cache");
1417 goto err3;
1418 }
335ce76b
JM		 1419 if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1420 0) {
1421 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1422 "netlink cache (event)");
1423 goto err3b;
1424 }
9fff9fdc 1425#else /* CONFIG_LIBNL20 */
3f5285e8
JM		 1426 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1427 if (drv->nl_cache == NULL) {
1428 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1429 "netlink cache");
1430 goto err3;
1431 }
335ce76b
JM		 1432 drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1433 if (drv->nl_cache_event == NULL) {
1434 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1435 "netlink cache (event)");
1436 goto err3b;
1437 }
9fff9fdc
JM		 1438#endif /* CONFIG_LIBNL20 */
1439
3f5285e8
JM		 1440 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1441 if (drv->nl80211 == NULL) {
1442 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1443 "found");
1444 goto err4;
1445 }
1446
97865538
JM		 1447 ret = nl_get_multicast_id(drv, "nl80211", "scan");
1448 if (ret >= 0)
335ce76b 1449 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
97865538
JM		 1450 if (ret < 0) {
1451 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1452 "membership for scan events: %d (%s)",
1453 ret, strerror(-ret));
1454 goto err4;
1455 }
c2a04078
JM		 1456
1457 ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1458 if (ret >= 0)
335ce76b 1459 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
c2a04078
JM		 1460 if (ret < 0) {
1461 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1462 "membership for mlme events: %d (%s)",
1463 ret, strerror(-ret));
1464 goto err4;
1465 }
c2a04078 1466
335ce76b 1467 eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
ba2d0d7d 1468 wpa_driver_nl80211_event_receive, drv, NULL);
97865538 1469
9fff9fdc
JM		 1470 return 0;
1471
1472err4:
335ce76b
JM		 1473 nl_cache_free(drv->nl_cache_event);
1474err3b:
9fff9fdc
JM		 1475 nl_cache_free(drv->nl_cache);
1476err3:
a65a9aed 1477 nl80211_handle_destroy(drv->nl_handle_event);
335ce76b 1478err2b:
a65a9aed 1479 nl80211_handle_destroy(drv->nl_handle);
9fff9fdc
JM		 1480err2:
1481 nl_cb_put(drv->nl_cb);
1482err1:
1483 return -1;
1484}
1485
1486
8401a6b0
JM		 1487static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
1488{
8401a6b0 1489 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
a63063b4
JM		 1490 /*
1491 * This may be for any interface; use ifdown event to disable
1492 * interface.
1493 */
8401a6b0
JM		 1494}
1495
1496
1497static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
1498{
1499 struct wpa_driver_nl80211_data *drv = ctx;
1500 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
1501 if (linux_set_iface_flags(drv->ioctl_sock, drv->first_bss.ifname, 1)) {
1502 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
1503 "after rfkill unblock");
1504 return;
1505 }
a63063b4 1506 /* rtnetlink ifup handler will report interface as enabled */
8401a6b0
JM		 1507}
1508
1509
9fff9fdc
JM		 1510/**
1511 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1512 * @ctx: context to be used when calling wpa_supplicant functions,
1513 * e.g., wpa_supplicant_event()
1514 * @ifname: interface name, e.g., wlan0
1515 * Returns: Pointer to private data, %NULL on failure
1516 */
1517static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1518{
9fff9fdc 1519 struct wpa_driver_nl80211_data *drv;
08063178 1520 struct netlink_config *cfg;
8401a6b0 1521 struct rfkill_config *rcfg;
a2e40bb6 1522 struct i802_bss *bss;
9fff9fdc
JM		 1523
1524 drv = os_zalloc(sizeof(*drv));
1525 if (drv == NULL)
1526 return NULL;
1527 drv->ctx = ctx;
a2e40bb6
FF		 1528 bss = &drv->first_bss;
1529 bss->drv = drv;
1530 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
9fff9fdc
JM		 1531 drv->monitor_ifidx = -1;
1532 drv->monitor_sock = -1;
bbaf0837 1533 drv->ioctl_sock = -1;
9fff9fdc 1534
ba2d0d7d 1535 if (wpa_driver_nl80211_init_nl(drv)) {
bbaf0837
JM		 1536 os_free(drv);
1537 return NULL;
1538 }
9fff9fdc 1539
3f5285e8
JM		 1540 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1541 if (drv->ioctl_sock < 0) {
1542 perror("socket(PF_INET,SOCK_DGRAM)");
bbaf0837 1543 goto failed;
3f5285e8
JM		 1544 }
1545
08063178
JM		 1546 cfg = os_zalloc(sizeof(*cfg));
1547 if (cfg == NULL)
1548 goto failed;
1549 cfg->ctx = drv;
1550 cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1551 cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1552 drv->netlink = netlink_init(cfg);
1553 if (drv->netlink == NULL) {
1554 os_free(cfg);
1555 goto failed;
1556 }
8401a6b0
JM		 1557
1558 rcfg = os_zalloc(sizeof(*rcfg));
1559 if (rcfg == NULL)
1560 goto failed;
1561 rcfg->ctx = drv;
1562 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
1563 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
1564 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
1565 drv->rfkill = rfkill_init(rcfg);
52169389 1566 if (drv->rfkill == NULL) {
8401a6b0 1567 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
52169389
JM		 1568 os_free(rcfg);
1569 }
8401a6b0 1570
08063178 1571 if (wpa_driver_nl80211_finish_drv_init(drv))
bbaf0837 1572 goto failed;
7524cfb1 1573
a2e40bb6 1574 return bss;
7524cfb1 1575
bbaf0837 1576failed:
8401a6b0 1577 rfkill_deinit(drv->rfkill);
08063178 1578 netlink_deinit(drv->netlink);
bbaf0837
JM		 1579 if (drv->ioctl_sock >= 0)
1580 close(drv->ioctl_sock);
1581
7524cfb1 1582 genl_family_put(drv->nl80211);
7524cfb1 1583 nl_cache_free(drv->nl_cache);
a65a9aed 1584 nl80211_handle_destroy(drv->nl_handle);
7524cfb1 1585 nl_cb_put(drv->nl_cb);
05ba8690 1586 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
bbaf0837 1587
7524cfb1
JM		 1588 os_free(drv);
1589 return NULL;
1590}
1591
1592
bd94971e
JB		 1593static int nl80211_register_frame(struct wpa_driver_nl80211_data *drv,
1594 u16 type, const u8 *match, size_t match_len)
58f6fbe0
JM		 1595{
1596 struct nl_msg *msg;
1597 int ret = -1;
1598
1599 msg = nlmsg_alloc();
1600 if (!msg)
1601 return -1;
1602
1603 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1604 NL80211_CMD_REGISTER_ACTION, 0);
1605
1606 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
bd94971e 1607 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
58f6fbe0
JM		 1608 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
1609
1610 ret = send_and_recv(drv, drv->nl_handle_event, msg, NULL, NULL);
1611 msg = NULL;
1612 if (ret) {
1613 wpa_printf(MSG_DEBUG, "nl80211: Register Action command "
1614 "failed: ret=%d (%s)", ret, strerror(-ret));
1615 wpa_hexdump(MSG_DEBUG, "nl80211: Register Action match",
1616 match, match_len);
1617 goto nla_put_failure;
1618 }
1619 ret = 0;
1620nla_put_failure:
1621 nlmsg_free(msg);
1622 return ret;
1623}
1624
1625
bd94971e
JB		 1626static int nl80211_register_action_frame(struct wpa_driver_nl80211_data *drv,
1627 const u8 *match, size_t match_len)
1628{
1629 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
1630 return nl80211_register_frame(drv, type, match, match_len);
1631}
1632
1633
58f6fbe0
JM		 1634static int nl80211_register_action_frames(struct wpa_driver_nl80211_data *drv)
1635{
046b26a2
JM		 1636#ifdef CONFIG_P2P
1637 /* GAS Initial Request */
1638 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0a", 2) < 0)
1639 return -1;
1640 /* GAS Initial Response */
1641 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0b", 2) < 0)
1642 return -1;
18708aad
JM		 1643 /* GAS Comeback Request */
1644 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0c", 2) < 0)
1645 return -1;
1646 /* GAS Comeback Response */
1647 if (nl80211_register_action_frame(drv, (u8 *) "\x04\x0d", 2) < 0)
1648 return -1;
046b26a2
JM		 1649 /* P2P Public Action */
1650 if (nl80211_register_action_frame(drv,
1651 (u8 *) "\x04\x09\x50\x6f\x9a\x09",
1652 6) < 0)
1653 return -1;
1654 /* P2P Action */
1655 if (nl80211_register_action_frame(drv,
1656 (u8 *) "\x7f\x50\x6f\x9a\x09",
1657 5) < 0)
1658 return -1;
1659#endif /* CONFIG_P2P */
1660
7b90c16a
JM		 1661 /* FT Action frames */
1662 if (nl80211_register_action_frame(drv, (u8 *) "\x06", 1) < 0)
1663 return -1;
1664 else
1665 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
1666 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
1667
58f6fbe0
JM		 1668 return 0;
1669}
1670
1671
8401a6b0
JM		 1672static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
1673{
1674 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
1675}
1676
1677
362f781e 1678static int
7524cfb1
JM		 1679wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1680{
a2e40bb6 1681 struct i802_bss *bss = &drv->first_bss;
8401a6b0 1682 int send_rfkill_event = 0;
a2e40bb6
FF		 1683
1684 drv->ifindex = if_nametoindex(bss->ifname);
1685 drv->first_bss.ifindex = drv->ifindex;
a87c9d96 1686
bbaf0837 1687#ifndef HOSTAPD
a2e40bb6 1688 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA) < 0) {
a87c9d96
JM		 1689 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1690 "use managed mode");
1691 }
1692
a2e40bb6 1693 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
8401a6b0
JM		 1694 if (rfkill_is_blocked(drv->rfkill)) {
1695 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
1696 "interface '%s' due to rfkill",
1697 bss->ifname);
a63063b4 1698 drv->if_disabled = 1;
8401a6b0
JM		 1699 send_rfkill_event = 1;
1700 } else {
1701 wpa_printf(MSG_ERROR, "nl80211: Could not set "
1702 "interface '%s' UP", bss->ifname);
1703 return -1;
1704 }
362f781e 1705 }
3f5285e8 1706
93d11400
ZY		 1707 if (wpa_driver_nl80211_capa(drv))
1708 return -1;
80bc75f1 1709
08063178 1710 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
e2d02c29 1711 1, IF_OPER_DORMANT);
bbaf0837 1712#endif /* HOSTAPD */
362f781e 1713
7b90c16a
JM		 1714 if (nl80211_register_action_frames(drv) < 0) {
1715 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
1716 "frame processing - ignore for now");
1717 /*
1718 * Older kernel versions did not support this, so ignore the
1719 * error for now. Some functionality may not be available
1720 * because of this.
1721 */
1722 }
58f6fbe0 1723
8401a6b0
JM		 1724 if (send_rfkill_event) {
1725 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
1726 drv, drv->ctx);
1727 }
1728
362f781e 1729 return 0;
3f5285e8
JM		 1730}
1731
1732
8a27af5c
JM		 1733static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1734{
1735 struct nl_msg *msg;
1736
1737 msg = nlmsg_alloc();
1738 if (!msg)
1739 return -ENOMEM;
1740
1741 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1742 0, NL80211_CMD_DEL_BEACON, 0);
1743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1744
1745 return send_and_recv_msgs(drv, msg, NULL, NULL);
1746 nla_put_failure:
1747 return -ENOBUFS;
1748}
8a27af5c
JM		 1749
1750
3f5285e8 1751/**
7e5ba1b9
JM		 1752 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1753 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3f5285e8
JM		 1754 *
1755 * Shut down driver interface and processing of driver events. Free
1756 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1757 */
7e5ba1b9 1758static void wpa_driver_nl80211_deinit(void *priv)
3f5285e8 1759{
a2e40bb6
FF		 1760 struct i802_bss *bss = priv;
1761 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8 1762
94627f6c 1763 if (drv->added_if_into_bridge) {
a2e40bb6 1764 if (linux_br_del_if(drv->ioctl_sock, drv->brname, bss->ifname)
94627f6c
JM		 1765 < 0)
1766 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1767 "interface %s from bridge %s: %s",
a2e40bb6 1768 bss->ifname, drv->brname, strerror(errno));
94627f6c
JM		 1769 }
1770 if (drv->added_bridge) {
1771 if (linux_br_del(drv->ioctl_sock, drv->brname) < 0)
1772 wpa_printf(MSG_INFO, "nl80211: Failed to remove "
1773 "bridge %s: %s",
1774 drv->brname, strerror(errno));
1775 }
1776
460456f8 1777 nl80211_remove_monitor_interface(drv);
8a27af5c
JM		 1778
1779 if (drv->nlmode == NL80211_IFTYPE_AP)
1780 wpa_driver_nl80211_del_beacon(drv);
0915d02c 1781
bbaf0837
JM		 1782#ifdef HOSTAPD
1783 if (drv->last_freq_ht) {
1784 /* Clear HT flags from the driver */
1785 struct hostapd_freq_params freq;
1786 os_memset(&freq, 0, sizeof(freq));
1787 freq.freq = drv->last_freq;
1788 i802_set_freq(priv, &freq);
1789 }
1790
bbaf0837
JM		 1791 if (drv->eapol_sock >= 0) {
1792 eloop_unregister_read_sock(drv->eapol_sock);
1793 close(drv->eapol_sock);
1794 }
1795
1796 if (drv->if_indices != drv->default_if_indices)
1797 os_free(drv->if_indices);
1b648c7e 1798#endif /* HOSTAPD */
3f5285e8 1799
4e5cb1a3
JM		 1800 if (drv->disable_11b_rates)
1801 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
1802
08063178
JM		 1803 netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1804 netlink_deinit(drv->netlink);
8401a6b0 1805 rfkill_deinit(drv->rfkill);
3f5285e8 1806
bbaf0837
JM		 1807 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1808
a2e40bb6
FF		 1809 (void) linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0);
1810 wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_INFRA);
3f5285e8 1811
bbaf0837
JM		 1812 if (drv->ioctl_sock >= 0)
1813 close(drv->ioctl_sock);
3f5285e8 1814
335ce76b 1815 eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
3f5285e8
JM		 1816 genl_family_put(drv->nl80211);
1817 nl_cache_free(drv->nl_cache);
335ce76b 1818 nl_cache_free(drv->nl_cache_event);
a65a9aed
JB		 1819 nl80211_handle_destroy(drv->nl_handle);
1820 nl80211_handle_destroy(drv->nl_handle_event);
3f5285e8
JM		 1821 nl_cb_put(drv->nl_cb);
1822
504e905c
JM		 1823 eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1824 drv, NULL);
1825
3812464c
JM		 1826 os_free(drv->filter_ssids);
1827
3f5285e8
JM		 1828 os_free(drv);
1829}
1830
1831
1832/**
1833 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
ad1e68e6 1834 * @eloop_ctx: Driver private data
3f5285e8
JM		 1835 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1836 *
1837 * This function can be used as registered timeout when starting a scan to
1838 * generate a scan completed event if the driver does not report this.
1839 */
1840static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1841{
ad1e68e6
JM		 1842 struct wpa_driver_nl80211_data *drv = eloop_ctx;
1843 if (drv->ap_scan_as_station) {
a2e40bb6
FF		 1844 wpa_driver_nl80211_set_mode(&drv->first_bss,
1845 IEEE80211_MODE_AP);
ad1e68e6
JM		 1846 drv->ap_scan_as_station = 0;
1847 }
3f5285e8
JM		 1848 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1849 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1850}
1851
1852
1853/**
1854 * wpa_driver_nl80211_scan - Request the driver to initiate scan
ad1e68e6 1855 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
6a1063e0 1856 * @params: Scan parameters
3f5285e8
JM		 1857 * Returns: 0 on success, -1 on failure
1858 */
6a1063e0
JM		 1859static int wpa_driver_nl80211_scan(void *priv,
1860 struct wpa_driver_scan_params *params)
3f5285e8 1861{
a2e40bb6
FF		 1862 struct i802_bss *bss = priv;
1863 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8 1864 int ret = 0, timeout;
d3a98225 1865 struct nl_msg *msg, *ssids, *freqs;
6a1063e0 1866 size_t i;
3f5285e8 1867
0e75527f
JM		 1868 msg = nlmsg_alloc();
1869 ssids = nlmsg_alloc();
d3a98225
JM		 1870 freqs = nlmsg_alloc();
1871 if (!msg || !ssids || !freqs) {
0e75527f
JM		 1872 nlmsg_free(msg);
1873 nlmsg_free(ssids);
d3a98225 1874 nlmsg_free(freqs);
3f5285e8
JM		 1875 return -1;
1876 }
1877
3812464c
JM		 1878 os_free(drv->filter_ssids);
1879 drv->filter_ssids = params->filter_ssids;
1880 params->filter_ssids = NULL;
1881 drv->num_filter_ssids = params->num_filter_ssids;
1882
0e75527f
JM		 1883 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1884 NL80211_CMD_TRIGGER_SCAN, 0);
1885
1886 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 1887
6a1063e0 1888 for (i = 0; i < params->num_ssids; i++) {
9fad706c
JM		 1889 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
1890 params->ssids[i].ssid,
1891 params->ssids[i].ssid_len);
6a1063e0
JM		 1892 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1893 params->ssids[i].ssid);
3f5285e8 1894 }
6a1063e0
JM		 1895 if (params->num_ssids)
1896 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3f5285e8 1897
d173df52 1898 if (params->extra_ies) {
9fad706c
JM		 1899 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan extra IEs",
1900 params->extra_ies, params->extra_ies_len);
d173df52
JM		 1901 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1902 params->extra_ies);
1903 }
1904
d3a98225 1905 if (params->freqs) {
9fad706c
JM		 1906 for (i = 0; params->freqs[i]; i++) {
1907 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
1908 "MHz", params->freqs[i]);
d3a98225 1909 NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
9fad706c 1910 }
d3a98225
JM		 1911 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1912 }
1913
0e75527f
JM		 1914 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1915 msg = NULL;
1916 if (ret) {
1917 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1918 "(%s)", ret, strerror(-ret));
ad1e68e6
JM		 1919#ifdef HOSTAPD
1920 if (drv->nlmode == NL80211_IFTYPE_AP) {
1921 /*
1922 * mac80211 does not allow scan requests in AP mode, so
1923 * try to do this in station mode.
1924 */
a2e40bb6 1925 if (wpa_driver_nl80211_set_mode(bss,
ad1e68e6
JM		 1926 IEEE80211_MODE_INFRA))
1927 goto nla_put_failure;
1928
1929 if (wpa_driver_nl80211_scan(drv, params)) {
a2e40bb6 1930 wpa_driver_nl80211_set_mode(bss,
ad1e68e6
JM		 1931 IEEE80211_MODE_AP);
1932 goto nla_put_failure;
1933 }
1934
1935 /* Restore AP mode when processing scan results */
1936 drv->ap_scan_as_station = 1;
1937 ret = 0;
1938 } else
1939 goto nla_put_failure;
1940#else /* HOSTAPD */
0e75527f 1941 goto nla_put_failure;
ad1e68e6 1942#endif /* HOSTAPD */
3f5285e8
JM		 1943 }
1944
1945 /* Not all drivers generate "scan completed" wireless event, so try to
1946 * read results after a timeout. */
0e75527f 1947 timeout = 10;
3f5285e8
JM		 1948 if (drv->scan_complete_events) {
1949 /*
d173df52
JM		 1950 * The driver seems to deliver events to notify when scan is
1951 * complete, so use longer timeout to avoid race conditions
1952 * with scanning and following association request.
3f5285e8
JM		 1953 */
1954 timeout = 30;
1955 }
1956 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1957 "seconds", ret, timeout);
1958 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
0e75527f
JM		 1959 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1960 drv, drv->ctx);
3f5285e8 1961
0e75527f
JM		 1962nla_put_failure:
1963 nlmsg_free(ssids);
1964 nlmsg_free(msg);
d3a98225 1965 nlmsg_free(freqs);
3f5285e8
JM		 1966 return ret;
1967}
1968
1969
3812464c
JM		 1970static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
1971{
1972 const u8 *end, *pos;
1973
1974 if (ies == NULL)
1975 return NULL;
1976
1977 pos = ies;
1978 end = ies + ies_len;
1979
1980 while (pos + 1 < end) {
1981 if (pos + 2 + pos[1] > end)
1982 break;
1983 if (pos[0] == ie)
1984 return pos;
1985 pos += 2 + pos[1];
1986 }
1987
1988 return NULL;
1989}
1990
1991
1992static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
1993 const u8 *ie, size_t ie_len)
1994{
1995 const u8 *ssid;
1996 size_t i;
1997
1998 if (drv->filter_ssids == NULL)
1999 return 0;
2000
2001 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
2002 if (ssid == NULL)
2003 return 1;
2004
2005 for (i = 0; i < drv->num_filter_ssids; i++) {
2006 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
2007 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
2008 0)
2009 return 0;
2010 }
2011
2012 return 1;
2013}
2014
2015
2016struct nl80211_bss_info_arg {
2017 struct wpa_driver_nl80211_data *drv;
2018 struct wpa_scan_results *res;
2019};
2020
b3db1e1c 2021static int bss_info_handler(struct nl_msg *msg, void *arg)
3f5285e8 2022{
b3db1e1c
JM		 2023 struct nlattr *tb[NL80211_ATTR_MAX + 1];
2024 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2025 struct nlattr *bss[NL80211_BSS_MAX + 1];
2026 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
2027 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
2028 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
2029 [NL80211_BSS_TSF] = { .type = NLA_U64 },
2030 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
2031 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
2032 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
2033 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
2034 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
e6b8efeb 2035 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
b3ad11bb 2036 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
8c090654 2037 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
b3db1e1c 2038 };
3812464c
JM		 2039 struct nl80211_bss_info_arg *_arg = arg;
2040 struct wpa_scan_results *res = _arg->res;
3f5285e8
JM		 2041 struct wpa_scan_res **tmp;
2042 struct wpa_scan_res *r;
8c090654
JM		 2043 const u8 *ie, *beacon_ie;
2044 size_t ie_len, beacon_ie_len;
2045 u8 *pos;
3f5285e8 2046
b3db1e1c
JM		 2047 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2048 genlmsg_attrlen(gnlh, 0), NULL);
2049 if (!tb[NL80211_ATTR_BSS])
2050 return NL_SKIP;
2051 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
2052 bss_policy))
2053 return NL_SKIP;
2054 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
2055 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2056 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
2057 } else {
2058 ie = NULL;
2059 ie_len = 0;
2060 }
8c090654
JM		 2061 if (bss[NL80211_BSS_BEACON_IES]) {
2062 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
2063 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
2064 } else {
2065 beacon_ie = NULL;
2066 beacon_ie_len = 0;
2067 }
3f5285e8 2068
3812464c
JM		 2069 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
2070 ie ? ie_len : beacon_ie_len))
2071 return NL_SKIP;
2072
8c090654 2073 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3f5285e8 2074 if (r == NULL)
b3db1e1c
JM		 2075 return NL_SKIP;
2076 if (bss[NL80211_BSS_BSSID])
2077 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
2078 ETH_ALEN);
2079 if (bss[NL80211_BSS_FREQUENCY])
2080 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
2081 if (bss[NL80211_BSS_BEACON_INTERVAL])
2082 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
2083 if (bss[NL80211_BSS_CAPABILITY])
2084 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
7c2849d2
JM		 2085 r->flags |= WPA_SCAN_NOISE_INVALID;
2086 if (bss[NL80211_BSS_SIGNAL_MBM]) {
b3db1e1c 2087 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
7c2849d2
JM		 2088 r->level /= 100; /* mBm to dBm */
2089 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
2090 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
2091 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
2092 r->flags |= WPA_SCAN_LEVEL_INVALID;
2093 } else
2094 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
b3db1e1c
JM		 2095 if (bss[NL80211_BSS_TSF])
2096 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
b3ad11bb
JM		 2097 if (bss[NL80211_BSS_SEEN_MS_AGO])
2098 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
b3db1e1c 2099 r->ie_len = ie_len;
8c090654
JM		 2100 pos = (u8 *) (r + 1);
2101 if (ie) {
2102 os_memcpy(pos, ie, ie_len);
2103 pos += ie_len;
2104 }
2105 r->beacon_ie_len = beacon_ie_len;
2106 if (beacon_ie)
2107 os_memcpy(pos, beacon_ie, beacon_ie_len);
3f5285e8 2108
e6b8efeb
JM		 2109 if (bss[NL80211_BSS_STATUS]) {
2110 enum nl80211_bss_status status;
2111 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
2112 switch (status) {
2113 case NL80211_BSS_STATUS_AUTHENTICATED:
2114 r->flags |= WPA_SCAN_AUTHENTICATED;
2115 break;
2116 case NL80211_BSS_STATUS_ASSOCIATED:
2117 r->flags |= WPA_SCAN_ASSOCIATED;
2118 break;
2119 default:
2120 break;
2121 }
2122 }
2123
3f5285e8
JM		 2124 tmp = os_realloc(res->res,
2125 (res->num + 1) * sizeof(struct wpa_scan_res *));
2126 if (tmp == NULL) {
2127 os_free(r);
b3db1e1c 2128 return NL_SKIP;
3f5285e8
JM		 2129 }
2130 tmp[res->num++] = r;
2131 res->res = tmp;
b3db1e1c
JM		 2132
2133 return NL_SKIP;
3f5285e8 2134}
b3db1e1c 2135
3f5285e8 2136
d72aad94
JM		 2137static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
2138 const u8 *addr)
2139{
2140 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
2141 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
582507be 2142 "mismatch (" MACSTR ")", MAC2STR(addr));
d72aad94
JM		 2143 wpa_driver_nl80211_mlme(drv, addr,
2144 NL80211_CMD_DEAUTHENTICATE,
77339912 2145 WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
d72aad94
JM		 2146 }
2147}
2148
2149
e6b8efeb
JM		 2150static void wpa_driver_nl80211_check_bss_status(
2151 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
2152{
2153 size_t i;
2154
2155 for (i = 0; i < res->num; i++) {
2156 struct wpa_scan_res *r = res->res[i];
2157 if (r->flags & WPA_SCAN_AUTHENTICATED) {
2158 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2159 "indicates BSS status with " MACSTR
2160 " as authenticated",
2161 MAC2STR(r->bssid));
2162 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2163 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
2164 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
2165 0) {
2166 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
2167 " in local state (auth=" MACSTR
2168 " assoc=" MACSTR ")",
2169 MAC2STR(drv->auth_bssid),
2170 MAC2STR(drv->bssid));
582507be 2171 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 2172 }
2173 }
2174
2175 if (r->flags & WPA_SCAN_ASSOCIATED) {
2176 wpa_printf(MSG_DEBUG, "nl80211: Scan results "
2177 "indicate BSS status with " MACSTR
2178 " as associated",
2179 MAC2STR(r->bssid));
2180 if (drv->nlmode == NL80211_IFTYPE_STATION &&
2181 !drv->associated) {
2182 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2183 "(not associated) does not match "
2184 "with BSS state");
d72aad94 2185 clear_state_mismatch(drv, r->bssid);
e6b8efeb
JM		 2186 } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
2187 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
2188 0) {
2189 wpa_printf(MSG_DEBUG, "nl80211: Local state "
2190 "(associated with " MACSTR ") does "
2191 "not match with BSS state",
d72aad94
JM		 2192 MAC2STR(drv->bssid));
2193 clear_state_mismatch(drv, r->bssid);
2194 clear_state_mismatch(drv, drv->bssid);
e6b8efeb
JM		 2195 }
2196 }
2197 }
2198}
2199
2200
d1f9c410
JM		 2201static void wpa_scan_results_free(struct wpa_scan_results *res)
2202{
2203 size_t i;
2204
2205 if (res == NULL)
2206 return;
2207
2208 for (i = 0; i < res->num; i++)
2209 os_free(res->res[i]);
2210 os_free(res->res);
2211 os_free(res);
2212}
2213
2214
7e5ba1b9 2215static struct wpa_scan_results *
8856462d 2216nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
3f5285e8 2217{
b3db1e1c 2218 struct nl_msg *msg;
3f5285e8 2219 struct wpa_scan_results *res;
b3db1e1c 2220 int ret;
3812464c 2221 struct nl80211_bss_info_arg arg;
3f5285e8
JM		 2222
2223 res = os_zalloc(sizeof(*res));
b3db1e1c 2224 if (res == NULL)
8e2c104f 2225 return NULL;
b3db1e1c
JM		 2226 msg = nlmsg_alloc();
2227 if (!msg)
2228 goto nla_put_failure;
3f5285e8 2229
b3db1e1c
JM		 2230 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
2231 NL80211_CMD_GET_SCAN, 0);
2232 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3f5285e8 2233
3812464c
JM		 2234 arg.drv = drv;
2235 arg.res = res;
2236 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
b3db1e1c
JM		 2237 msg = NULL;
2238 if (ret == 0) {
2239 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
2240 (unsigned long) res->num);
2241 return res;
3f5285e8 2242 }
b3db1e1c
JM		 2243 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
2244 "(%s)", ret, strerror(-ret));
2245nla_put_failure:
2246 nlmsg_free(msg);
2247 wpa_scan_results_free(res);
2248 return NULL;
3f5285e8
JM		 2249}
2250
2251
8856462d
JM		 2252/**
2253 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
2254 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
2255 * Returns: Scan results on success, -1 on failure
2256 */
2257static struct wpa_scan_results *
2258wpa_driver_nl80211_get_scan_results(void *priv)
2259{
a2e40bb6
FF		 2260 struct i802_bss *bss = priv;
2261 struct wpa_driver_nl80211_data *drv = bss->drv;
8856462d
JM		 2262 struct wpa_scan_results *res;
2263
2264 res = nl80211_get_scan_results(drv);
2265 if (res)
2266 wpa_driver_nl80211_check_bss_status(drv, res);
2267 return res;
2268}
2269
2270
2271static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
2272{
2273 struct wpa_scan_results *res;
2274 size_t i;
2275
2276 res = nl80211_get_scan_results(drv);
2277 if (res == NULL) {
2278 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
2279 return;
2280 }
2281
2282 wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
2283 for (i = 0; i < res->num; i++) {
2284 struct wpa_scan_res *r = res->res[i];
2285 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
2286 (int) i, (int) res->num, MAC2STR(r->bssid),
2287 r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
2288 r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
2289 }
2290
2291 wpa_scan_results_free(res);
2292}
2293
2294
642187d6 2295static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
71934751
JM		 2296 enum wpa_alg alg, const u8 *addr,
2297 int key_idx, int set_tx,
642187d6
JM		 2298 const u8 *seq, size_t seq_len,
2299 const u8 *key, size_t key_len)
3f5285e8 2300{
a2e40bb6
FF		 2301 struct i802_bss *bss = priv;
2302 struct wpa_driver_nl80211_data *drv = bss->drv;
642187d6 2303 int ifindex = if_nametoindex(ifname);
3f5285e8 2304 struct nl_msg *msg;
1ad1cdc2 2305 int ret;
3f5285e8 2306
1ad1cdc2
JM		 2307 wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
2308 "set_tx=%d seq_len=%lu key_len=%lu",
2309 __func__, ifindex, alg, addr, key_idx, set_tx,
3f5285e8
JM		 2310 (unsigned long) seq_len, (unsigned long) key_len);
2311
2312 msg = nlmsg_alloc();
1ad1cdc2
JM		 2313 if (!msg)
2314 return -ENOMEM;
3f5285e8
JM		 2315
2316 if (alg == WPA_ALG_NONE) {
1ad1cdc2
JM		 2317 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2318 0, NL80211_CMD_DEL_KEY, 0);
3f5285e8 2319 } else {
1ad1cdc2
JM		 2320 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2321 0, NL80211_CMD_NEW_KEY, 0);
3f5285e8 2322 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
d723bab4
JM		 2323 switch (alg) {
2324 case WPA_ALG_WEP:
2325 if (key_len == 5)
2326 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2327 WLAN_CIPHER_SUITE_WEP40);
2328 else
2329 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2330 WLAN_CIPHER_SUITE_WEP104);
2331 break;
2332 case WPA_ALG_TKIP:
2333 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2334 WLAN_CIPHER_SUITE_TKIP);
2335 break;
2336 case WPA_ALG_CCMP:
2337 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2338 WLAN_CIPHER_SUITE_CCMP);
2339 break;
2340 case WPA_ALG_IGTK:
2341 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
2342 WLAN_CIPHER_SUITE_AES_CMAC);
2343 break;
2344 default:
2345 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2346 "algorithm %d", __func__, alg);
3f5285e8
JM		 2347 nlmsg_free(msg);
2348 return -1;
2349 }
2350 }
2351
849ef835 2352 if (seq && seq_len)
1ad1cdc2
JM		 2353 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
2354
3f5285e8
JM		 2355 if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
2356 {
2357 wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
2358 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2359 }
2360 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1ad1cdc2 2361 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3f5285e8 2362
1ad1cdc2 2363 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
15664ad0 2364 if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
1ad1cdc2
JM		 2365 ret = 0;
2366 if (ret)
2367 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
2368 ret, strerror(-ret));
3f5285e8 2369
1ad1cdc2
JM		 2370 /*
2371 * If we failed or don't need to set the default TX key (below),
2372 * we're done here.
2373 */
2374 if (ret || !set_tx || alg == WPA_ALG_NONE)
2375 return ret;
de12717a 2376#ifdef HOSTAPD
1ad1cdc2
JM		 2377 if (addr)
2378 return ret;
de12717a
JM		 2379#else /* HOSTAPD */
2380 if (drv->nlmode == NL80211_IFTYPE_AP && addr)
2381 return ret;
1ad1cdc2 2382#endif /* HOSTAPD */
3f5285e8 2383
1ad1cdc2
JM		 2384 msg = nlmsg_alloc();
2385 if (!msg)
2386 return -ENOMEM;
3f5285e8 2387
1ad1cdc2
JM		 2388 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2389 0, NL80211_CMD_SET_KEY, 0);
2390 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
2391 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2392 if (alg == WPA_ALG_IGTK)
2393 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
2394 else
2395 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
3f5285e8 2396
1ad1cdc2
JM		 2397 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2398 if (ret == -ENOENT)
2399 ret = 0;
2400 if (ret)
2401 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
2402 "err=%d %s)", ret, strerror(-ret));
2403 return ret;
3f5285e8
JM		 2404
2405nla_put_failure:
6241fcb1 2406 return -ENOBUFS;
3f5285e8
JM		 2407}
2408
2409
71934751 2410static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
0194fedb
JB		 2411 int key_idx, int defkey,
2412 const u8 *seq, size_t seq_len,
2413 const u8 *key, size_t key_len)
2414{
2415 struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
2416 if (!key_attr)
2417 return -1;
2418
2419 if (defkey && alg == WPA_ALG_IGTK)
2420 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
2421 else if (defkey)
2422 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2423
2424 NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
2425
d723bab4
JM		 2426 switch (alg) {
2427 case WPA_ALG_WEP:
2428 if (key_len == 5)
2aa5f847
JM		 2429 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2430 WLAN_CIPHER_SUITE_WEP40);
d723bab4 2431 else
2aa5f847
JM		 2432 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2433 WLAN_CIPHER_SUITE_WEP104);
d723bab4
JM		 2434 break;
2435 case WPA_ALG_TKIP:
2aa5f847 2436 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
d723bab4
JM		 2437 break;
2438 case WPA_ALG_CCMP:
2aa5f847 2439 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
d723bab4
JM		 2440 break;
2441 case WPA_ALG_IGTK:
2aa5f847
JM		 2442 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2443 WLAN_CIPHER_SUITE_AES_CMAC);
d723bab4
JM		 2444 break;
2445 default:
2446 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
2447 "algorithm %d", __func__, alg);
0194fedb 2448 return -1;
d723bab4 2449 }
0194fedb
JB		 2450
2451 if (seq && seq_len)
2452 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
2453
2454 NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
2455
2456 nla_nest_end(msg, key_attr);
2457
2458 return 0;
2459 nla_put_failure:
2460 return -1;
2461}
2462
c811d5bc 2463
cfaab580
ZY		 2464static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
2465 struct nl_msg *msg)
2466{
2467 int i, privacy = 0;
2468 struct nlattr *nl_keys, *nl_key;
2469
2470 for (i = 0; i < 4; i++) {
2471 if (!params->wep_key[i])
2472 continue;
2473 privacy = 1;
2474 break;
2475 }
2476 if (!privacy)
2477 return 0;
2478
2479 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
2480
2481 nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
2482 if (!nl_keys)
2483 goto nla_put_failure;
2484
2485 for (i = 0; i < 4; i++) {
2486 if (!params->wep_key[i])
2487 continue;
2488
2489 nl_key = nla_nest_start(msg, i);
2490 if (!nl_key)
2491 goto nla_put_failure;
2492
2493 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
2494 params->wep_key[i]);
2495 if (params->wep_key_len[i] == 5)
2496 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2497 WLAN_CIPHER_SUITE_WEP40);
2498 else
2499 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
2500 WLAN_CIPHER_SUITE_WEP104);
2501
2502 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
2503
2504 if (i == params->wep_tx_keyidx)
2505 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
2506
2507 nla_nest_end(msg, nl_key);
2508 }
2509 nla_nest_end(msg, nl_keys);
2510
2511 return 0;
2512
2513nla_put_failure:
2514 return -ENOBUFS;
2515}
2516
2517
c2a04078 2518static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
77339912
JM		 2519 const u8 *addr, int cmd, u16 reason_code,
2520 int local_state_change)
c2a04078
JM		 2521{
2522 int ret = -1;
2523 struct nl_msg *msg;
2524
2525 msg = nlmsg_alloc();
2526 if (!msg)
2527 return -1;
2528
2529 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
2530
2531 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2532 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
2533 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
77339912
JM		 2534 if (local_state_change)
2535 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
c2a04078
JM		 2536
2537 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2538 msg = NULL;
2539 if (ret) {
2540 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2541 "(%s)", ret, strerror(-ret));
2542 goto nla_put_failure;
2543 }
2544 ret = 0;
2545
2546nla_put_failure:
2547 nlmsg_free(msg);
2548 return ret;
2549}
3f5285e8
JM		 2550
2551
cfaab580
ZY		 2552static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
2553 const u8 *addr, int reason_code)
2554{
2e75a2b3
JM		 2555 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2556 __func__, MAC2STR(addr), reason_code);
cfaab580
ZY		 2557 drv->associated = 0;
2558 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
77339912 2559 reason_code, 0);
cfaab580
ZY		 2560}
2561
2562
3f5285e8 2563static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
c2a04078 2564 int reason_code)
3f5285e8 2565{
a2e40bb6
FF		 2566 struct i802_bss *bss = priv;
2567 struct wpa_driver_nl80211_data *drv = bss->drv;
cfaab580
ZY		 2568 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2569 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2e75a2b3
JM		 2570 wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
2571 __func__, MAC2STR(addr), reason_code);
13405f35 2572 drv->associated = 0;
c2a04078 2573 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
77339912 2574 reason_code, 0);
3f5285e8
JM		 2575}
2576
2577
2578static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
c2a04078 2579 int reason_code)
3f5285e8 2580{
a2e40bb6
FF		 2581 struct i802_bss *bss = priv;
2582 struct wpa_driver_nl80211_data *drv = bss->drv;
cfaab580
ZY		 2583 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2584 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
c2a04078 2585 wpa_printf(MSG_DEBUG, "%s", __func__);
13405f35 2586 drv->associated = 0;
c2a04078 2587 return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
77339912 2588 reason_code, 0);
3f5285e8
JM		 2589}
2590
2591
c2a04078
JM		 2592static int wpa_driver_nl80211_authenticate(
2593 void *priv, struct wpa_driver_auth_params *params)
2594{
a2e40bb6
FF		 2595 struct i802_bss *bss = priv;
2596 struct wpa_driver_nl80211_data *drv = bss->drv;
a0b2f99b 2597 int ret = -1, i;
c2a04078
JM		 2598 struct nl_msg *msg;
2599 enum nl80211_auth_type type;
6d6f4bb8 2600 int count = 0;
c2a04078
JM		 2601
2602 drv->associated = 0;
e6b8efeb 2603 os_memset(drv->auth_bssid, 0, ETH_ALEN);
af473088
JM		 2604 /* FIX: IBSS mode */
2605 if (drv->nlmode != NL80211_IFTYPE_STATION)
2606 wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
c2a04078 2607
a2e40bb6 2608 if (wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA) < 0)
4a867032
JM		 2609 return -1;
2610
6d6f4bb8 2611retry:
c2a04078
JM		 2612 msg = nlmsg_alloc();
2613 if (!msg)
2614 return -1;
2615
2616 wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2617 drv->ifindex);
a0b2f99b 2618
0194fedb
JB		 2619 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2620 NL80211_CMD_AUTHENTICATE, 0);
2621
a0b2f99b
JM		 2622 for (i = 0; i < 4; i++) {
2623 if (!params->wep_key[i])
2624 continue;
2ea2fcc7
HS		 2625 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
2626 NULL, i,
a0b2f99b
JM		 2627 i == params->wep_tx_keyidx, NULL, 0,
2628 params->wep_key[i],
2629 params->wep_key_len[i]);
0194fedb
JB		 2630 if (params->wep_tx_keyidx != i)
2631 continue;
2632 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2633 params->wep_key[i], params->wep_key_len[i])) {
2634 nlmsg_free(msg);
2635 return -1;
2636 }
a0b2f99b
JM		 2637 }
2638
c2a04078
JM		 2639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2640 if (params->bssid) {
2641 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
2642 MAC2STR(params->bssid));
2643 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2644 }
2645 if (params->freq) {
2646 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
2647 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2648 }
2649 if (params->ssid) {
2650 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
2651 params->ssid, params->ssid_len);
2652 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2653 params->ssid);
2654 }
2655 wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
2656 if (params->ie)
2657 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
abd9fafa 2658 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
c2a04078 2659 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 2660 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
c2a04078 2661 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 2662 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
c2a04078 2663 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 2664 else if (params->auth_alg & WPA_AUTH_ALG_FT)
c2a04078
JM		 2665 type = NL80211_AUTHTYPE_FT;
2666 else
2667 goto nla_put_failure;
2668 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
2669 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
77339912
JM		 2670 if (params->local_state_change) {
2671 wpa_printf(MSG_DEBUG, " * Local state change only");
2672 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
2673 }
c2a04078
JM		 2674
2675 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2676 msg = NULL;
2677 if (ret) {
2678 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2679 "(%s)", ret, strerror(-ret));
6d6f4bb8 2680 count++;
77339912
JM		 2681 if (ret == -EALREADY && count == 1 && params->bssid &&
2682 !params->local_state_change) {
6d6f4bb8
JM		 2683 /*
2684 * mac80211 does not currently accept new
2685 * authentication if we are already authenticated. As a
2686 * workaround, force deauthentication and try again.
2687 */
2688 wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2689 "after forced deauthentication");
2690 wpa_driver_nl80211_deauthenticate(
5205c4f9 2691 bss, params->bssid,
6d6f4bb8
JM		 2692 WLAN_REASON_PREV_AUTH_NOT_VALID);
2693 nlmsg_free(msg);
2694 goto retry;
2695 }
c2a04078
JM		 2696 goto nla_put_failure;
2697 }
2698 ret = 0;
2699 wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2700 "successfully");
2701
2702nla_put_failure:
2703 nlmsg_free(msg);
2704 return ret;
2705}
2706
2707
282d5590
JM		 2708struct phy_info_arg {
2709 u16 *num_modes;
2710 struct hostapd_hw_modes *modes;
2711};
2712
2713static int phy_info_handler(struct nl_msg *msg, void *arg)
2714{
2715 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2716 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2717 struct phy_info_arg *phy_info = arg;
2718
2719 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2720
2721 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2722 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2723 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2724 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2725 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2726 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2727 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2728 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2729 };
2730
2731 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2732 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2733 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2734 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2735 };
2736
2737 struct nlattr *nl_band;
2738 struct nlattr *nl_freq;
2739 struct nlattr *nl_rate;
2740 int rem_band, rem_freq, rem_rate;
2741 struct hostapd_hw_modes *mode;
2742 int idx, mode_is_set;
2743
2744 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2745 genlmsg_attrlen(gnlh, 0), NULL);
2746
2747 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2748 return NL_SKIP;
2749
2750 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
e62fb0a0 2751 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
282d5590
JM		 2752 if (!mode)
2753 return NL_SKIP;
2754 phy_info->modes = mode;
2755
2756 mode_is_set = 0;
2757
2758 mode = &phy_info->modes[*(phy_info->num_modes)];
2759 memset(mode, 0, sizeof(*mode));
2760 *(phy_info->num_modes) += 1;
2761
2762 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2763 nla_len(nl_band), NULL);
2764
2765 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2766 mode->ht_capab = nla_get_u16(
2767 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2768 }
2769
be8eb8ab
JM		 2770 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2771 mode->a_mpdu_params |= nla_get_u8(
2772 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2773 0x03;
2774 }
2775
2776 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2777 mode->a_mpdu_params |= nla_get_u8(
2778 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2779 2;
2780 }
2781
08eb154d
JM		 2782 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2783 nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2784 u8 *mcs;
2785 mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2786 os_memcpy(mode->mcs_set, mcs, 16);
2787 }
2788
282d5590
JM		 2789 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2790 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2791 nla_len(nl_freq), freq_policy);
2792 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2793 continue;
2794 mode->num_channels++;
2795 }
2796
e62fb0a0 2797 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
282d5590
JM		 2798 if (!mode->channels)
2799 return NL_SKIP;
2800
2801 idx = 0;
2802
2803 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2804 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2805 nla_len(nl_freq), freq_policy);
2806 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2807 continue;
2808
2809 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2810 mode->channels[idx].flag = 0;
2811
2812 if (!mode_is_set) {
2813 /* crude heuristic */
2814 if (mode->channels[idx].freq < 4000)
2815 mode->mode = HOSTAPD_MODE_IEEE80211B;
2816 else
2817 mode->mode = HOSTAPD_MODE_IEEE80211A;
2818 mode_is_set = 1;
2819 }
2820
2821 /* crude heuristic */
2822 if (mode->channels[idx].freq < 4000)
5a0ffb5f 2823 if (mode->channels[idx].freq == 2484)
282d5590
JM		 2824 mode->channels[idx].chan = 14;
2825 else
2826 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2827 else
2828 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2829
2830 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2831 mode->channels[idx].flag |=
2832 HOSTAPD_CHAN_DISABLED;
2833 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2834 mode->channels[idx].flag |=
2835 HOSTAPD_CHAN_PASSIVE_SCAN;
2836 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2837 mode->channels[idx].flag |=
2838 HOSTAPD_CHAN_NO_IBSS;
2839 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2840 mode->channels[idx].flag |=
2841 HOSTAPD_CHAN_RADAR;
2842
2843 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2844 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2845 mode->channels[idx].max_tx_power =
2846 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2847
2848 idx++;
2849 }
2850
2851 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2852 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2853 nla_len(nl_rate), rate_policy);
2854 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2855 continue;
2856 mode->num_rates++;
2857 }
2858
e62fb0a0 2859 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
282d5590
JM		 2860 if (!mode->rates)
2861 return NL_SKIP;
2862
2863 idx = 0;
2864
2865 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2866 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2867 nla_len(nl_rate), rate_policy);
2868 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2869 continue;
fb7842aa 2870 mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
282d5590
JM		 2871
2872 /* crude heuristic */
2873 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
fb7842aa 2874 mode->rates[idx] > 200)
282d5590
JM		 2875 mode->mode = HOSTAPD_MODE_IEEE80211G;
2876
282d5590
JM		 2877 idx++;
2878 }
2879 }
2880
2881 return NL_SKIP;
2882}
2883
2884static struct hostapd_hw_modes *
2885wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2886{
2887 u16 m;
2888 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2889 int i, mode11g_idx = -1;
2890
2891 /* If only 802.11g mode is included, use it to construct matching
2892 * 802.11b mode data. */
2893
2894 for (m = 0; m < *num_modes; m++) {
2895 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2896 return modes; /* 802.11b already included */
2897 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2898 mode11g_idx = m;
2899 }
2900
2901 if (mode11g_idx < 0)
2902 return modes; /* 2.4 GHz band not supported at all */
2903
2904 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2905 if (nmodes == NULL)
2906 return modes; /* Could not add 802.11b mode */
2907
2908 mode = &nmodes[*num_modes];
2909 os_memset(mode, 0, sizeof(*mode));
2910 (*num_modes)++;
2911 modes = nmodes;
2912
2913 mode->mode = HOSTAPD_MODE_IEEE80211B;
2914
2915 mode11g = &modes[mode11g_idx];
2916 mode->num_channels = mode11g->num_channels;
2917 mode->channels = os_malloc(mode11g->num_channels *
2918 sizeof(struct hostapd_channel_data));
2919 if (mode->channels == NULL) {
2920 (*num_modes)--;
2921 return modes; /* Could not add 802.11b mode */
2922 }
2923 os_memcpy(mode->channels, mode11g->channels,
2924 mode11g->num_channels * sizeof(struct hostapd_channel_data));
2925
2926 mode->num_rates = 0;
fb7842aa 2927 mode->rates = os_malloc(4 * sizeof(int));
282d5590
JM		 2928 if (mode->rates == NULL) {
2929 os_free(mode->channels);
2930 (*num_modes)--;
2931 return modes; /* Could not add 802.11b mode */
2932 }
2933
2934 for (i = 0; i < mode11g->num_rates; i++) {
fb7842aa
JM		 2935 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2936 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
282d5590
JM		 2937 continue;
2938 mode->rates[mode->num_rates] = mode11g->rates[i];
2939 mode->num_rates++;
2940 if (mode->num_rates == 4)
2941 break;
2942 }
2943
2944 if (mode->num_rates == 0) {
2945 os_free(mode->channels);
2946 os_free(mode->rates);
2947 (*num_modes)--;
2948 return modes; /* No 802.11b rates */
2949 }
2950
2951 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2952 "information");
2953
2954 return modes;
2955}
2956
2957
2958static struct hostapd_hw_modes *
2959wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2960{
a2e40bb6
FF		 2961 struct i802_bss *bss = priv;
2962 struct wpa_driver_nl80211_data *drv = bss->drv;
282d5590
JM		 2963 struct nl_msg *msg;
2964 struct phy_info_arg result = {
2965 .num_modes = num_modes,
2966 .modes = NULL,
2967 };
2968
2969 *num_modes = 0;
2970 *flags = 0;
2971
2972 msg = nlmsg_alloc();
2973 if (!msg)
2974 return NULL;
2975
2976 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2977 0, NL80211_CMD_GET_WIPHY, 0);
2978
2979 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2980
2981 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2982 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2983 nla_put_failure:
2984 return NULL;
2985}
2986
2987
2c2010ac
JM		 2988static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2989 const void *data, size_t len,
2990 int encrypt)
2991{
2992 __u8 rtap_hdr[] = {
2993 0x00, 0x00, /* radiotap version */
2994 0x0e, 0x00, /* radiotap length */
2995 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2996 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2997 0x00, /* padding */
2998 0x00, 0x00, /* RX and TX flags to indicate that */
2999 0x00, 0x00, /* this is the injected frame directly */
3000 };
3001 struct iovec iov[2] = {
3002 {
3003 .iov_base = &rtap_hdr,
3004 .iov_len = sizeof(rtap_hdr),
3005 },
3006 {
3007 .iov_base = (void *) data,
3008 .iov_len = len,
3009 }
3010 };
3011 struct msghdr msg = {
3012 .msg_name = NULL,
3013 .msg_namelen = 0,
3014 .msg_iov = iov,
3015 .msg_iovlen = 2,
3016 .msg_control = NULL,
3017 .msg_controllen = 0,
3018 .msg_flags = 0,
3019 };
3020
3021 if (encrypt)
3022 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
3023
3024 return sendmsg(drv->monitor_sock, &msg, 0);
3025}
3026
3027
3028static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
3029 size_t data_len)
3030{
a2e40bb6
FF		 3031 struct i802_bss *bss = priv;
3032 struct wpa_driver_nl80211_data *drv = bss->drv;
2c2010ac 3033 struct ieee80211_mgmt *mgmt;
7a47d567 3034 int encrypt = 1;
2c2010ac
JM		 3035 u16 fc;
3036
3037 mgmt = (struct ieee80211_mgmt *) data;
3038 fc = le_to_host16(mgmt->frame_control);
3039
3040 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3041 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
3042 /*
3043 * Only one of the authentication frame types is encrypted.
3044 * In order for static WEP encryption to work properly (i.e.,
3045 * to not encrypt the frame), we need to tell mac80211 about
3046 * the frames that must not be encrypted.
3047 */
3048 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
3049 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
7a47d567
JB		 3050 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
3051 encrypt = 0;
2c2010ac
JM		 3052 }
3053
7a47d567 3054 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2c2010ac
JM		 3055}
3056
3057
8b897f5a 3058static int wpa_driver_nl80211_set_beacon(void *priv,
5d674872
JM		 3059 const u8 *head, size_t head_len,
3060 const u8 *tail, size_t tail_len,
3061 int dtim_period, int beacon_int)
d2440ba0 3062{
a2e40bb6
FF		 3063 struct i802_bss *bss = priv;
3064 struct wpa_driver_nl80211_data *drv = bss->drv;
d2440ba0
JM		 3065 struct nl_msg *msg;
3066 u8 cmd = NL80211_CMD_NEW_BEACON;
3067 int ret;
b4fd6fab 3068 int beacon_set;
8b897f5a 3069 int ifindex = if_nametoindex(bss->ifname);
b4fd6fab 3070
b4fd6fab 3071 beacon_set = bss->beacon_set;
d2440ba0
JM		 3072
3073 msg = nlmsg_alloc();
3074 if (!msg)
3075 return -ENOMEM;
3076
3077 wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
b4fd6fab
JM		 3078 beacon_set);
3079 if (beacon_set)
d2440ba0
JM		 3080 cmd = NL80211_CMD_SET_BEACON;
3081
3082 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3083 0, cmd, 0);
3084 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
3085 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
b4fd6fab 3086 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5d674872 3087 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
d2440ba0
JM		 3088 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
3089
3090 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3091 if (ret) {
3092 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
3093 ret, strerror(-ret));
b4fd6fab 3094 } else {
b4fd6fab 3095 bss->beacon_set = 1;
b4fd6fab 3096 }
d2440ba0
JM		 3097 return ret;
3098 nla_put_failure:
3099 return -ENOBUFS;
3100}
3101
3102
f019981a
JM		 3103static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
3104 int freq, int ht_enabled,
3105 int sec_channel_offset)
1581b38b
JM		 3106{
3107 struct nl_msg *msg;
d2440ba0 3108 int ret;
1581b38b
JM		 3109
3110 msg = nlmsg_alloc();
3111 if (!msg)
3112 return -1;
3113
3114 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3115 NL80211_CMD_SET_WIPHY, 0);
3116
3117 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
f019981a
JM		 3118 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
3119 if (ht_enabled) {
3120 switch (sec_channel_offset) {
3121 case -1:
3122 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3123 NL80211_CHAN_HT40MINUS);
3124 break;
3125 case 1:
3126 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3127 NL80211_CHAN_HT40PLUS);
3128 break;
3129 default:
3130 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3131 NL80211_CHAN_HT20);
3132 break;
3133 }
3134 }
1581b38b 3135
d2440ba0
JM		 3136 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3137 if (ret == 0)
1581b38b 3138 return 0;
f019981a
JM		 3139 wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
3140 "%d (%s)", freq, ret, strerror(-ret));
1581b38b
JM		 3141nla_put_failure:
3142 return -1;
3143}
3144
0f4e8b4f 3145
62847751 3146static int wpa_driver_nl80211_sta_add(void *priv,
0f4e8b4f
JM		 3147 struct hostapd_sta_add_params *params)
3148{
a2e40bb6
FF		 3149 struct i802_bss *bss = priv;
3150 struct wpa_driver_nl80211_data *drv = bss->drv;
0f4e8b4f
JM		 3151 struct nl_msg *msg;
3152 int ret = -ENOBUFS;
3153
3154 msg = nlmsg_alloc();
3155 if (!msg)
3156 return -ENOMEM;
3157
3158 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3159 0, NL80211_CMD_NEW_STATION, 0);
3160
62847751 3161 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
0f4e8b4f
JM		 3162 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
3163 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
3164 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
3165 params->supp_rates);
3166 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
3167 params->listen_interval);
0f4e8b4f
JM		 3168 if (params->ht_capabilities) {
3169 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
fc4e2d95
JM		 3170 sizeof(*params->ht_capabilities),
3171 params->ht_capabilities);
0f4e8b4f 3172 }
0f4e8b4f
JM		 3173
3174 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3175 if (ret)
3176 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
3177 "result: %d (%s)", ret, strerror(-ret));
3178 if (ret == -EEXIST)
3179 ret = 0;
3180 nla_put_failure:
3181 return ret;
3182}
3183
3184
3185static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
3186{
a2e40bb6
FF		 3187 struct i802_bss *bss = priv;
3188 struct wpa_driver_nl80211_data *drv = bss->drv;
0f4e8b4f
JM		 3189 struct nl_msg *msg;
3190 int ret;
3191
3192 msg = nlmsg_alloc();
3193 if (!msg)
3194 return -ENOMEM;
3195
3196 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3197 0, NL80211_CMD_DEL_STATION, 0);
3198
3199 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 3200 if_nametoindex(bss->ifname));
0f4e8b4f
JM		 3201 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3202
3203 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3204 if (ret == -ENOENT)
3205 return 0;
3206 return ret;
3207 nla_put_failure:
3208 return -ENOBUFS;
3209}
3210
1581b38b 3211
0915d02c
JM		 3212static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
3213 int ifidx)
3214{
3215 struct nl_msg *msg;
3216
c6e8e8e4
JM		 3217 wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
3218
2135f224
JM		 3219#ifdef HOSTAPD
3220 /* stop listening for EAPOL on this interface */
3221 del_ifidx(drv, ifidx);
3222#endif /* HOSTAPD */
3223
0915d02c
JM		 3224 msg = nlmsg_alloc();
3225 if (!msg)
3226 goto nla_put_failure;
3227
3228 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3229 0, NL80211_CMD_DEL_INTERFACE, 0);
3230 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
3231
3232 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
3233 return;
3234 nla_put_failure:
e748062b 3235 wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
0915d02c
JM		 3236}
3237
3238
a35187e7
KH		 3239static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
3240 const char *ifname,
3241 enum nl80211_iftype iftype,
fbbfcbac 3242 const u8 *addr, int wds)
0915d02c
JM		 3243{
3244 struct nl_msg *msg, *flags = NULL;
3245 int ifidx;
3246 int ret = -ENOBUFS;
3247
3248 msg = nlmsg_alloc();
3249 if (!msg)
3250 return -1;
3251
3252 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3253 0, NL80211_CMD_NEW_INTERFACE, 0);
3254 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3255 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
3256 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
3257
3258 if (iftype == NL80211_IFTYPE_MONITOR) {
3259 int err;
3260
3261 flags = nlmsg_alloc();
3262 if (!flags)
3263 goto nla_put_failure;
3264
3265 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
3266
3267 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
3268
3269 nlmsg_free(flags);
3270
3271 if (err)
3272 goto nla_put_failure;
fbbfcbac
FF		 3273 } else if (wds) {
3274 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
0915d02c
JM		 3275 }
3276
3277 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3278 if (ret) {
3279 nla_put_failure:
a35187e7
KH		 3280 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
3281 ifname, ret, strerror(-ret));
0915d02c
JM		 3282 return ret;
3283 }
3284
3285 ifidx = if_nametoindex(ifname);
c6e8e8e4
JM		 3286 wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
3287 ifname, ifidx);
0915d02c
JM		 3288
3289 if (ifidx <= 0)
3290 return -1;
3291
2135f224
JM		 3292#ifdef HOSTAPD
3293 /* start listening for EAPOL on this interface */
3294 add_ifidx(drv, ifidx);
7bfc47c3 3295#endif /* HOSTAPD */
2135f224 3296
7bfc47c3 3297 if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2ac9688e 3298 linux_set_ifhwaddr(drv->ioctl_sock, ifname, addr)) {
41d931ee
JM		 3299 nl80211_remove_iface(drv, ifidx);
3300 return -1;
2135f224 3301 }
2135f224 3302
0915d02c
JM		 3303 return ifidx;
3304}
22a7c9d7
JM		 3305
3306
a35187e7
KH		 3307static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
3308 const char *ifname, enum nl80211_iftype iftype,
fbbfcbac 3309 const u8 *addr, int wds)
a35187e7
KH		 3310{
3311 int ret;
3312
fbbfcbac 3313 ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
a35187e7
KH		 3314
3315 /* if error occured and interface exists already */
3316 if (ret == -ENFILE && if_nametoindex(ifname)) {
3317 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
3318
3319 /* Try to remove the interface that was already there. */
3320 nl80211_remove_iface(drv, if_nametoindex(ifname));
3321
3322 /* Try to create the interface again */
fbbfcbac
FF		 3323 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
3324 wds);
a35187e7
KH		 3325 }
3326
4e5cb1a3
JM		 3327 if (ret >= 0 && drv->disable_11b_rates)
3328 nl80211_disable_11b_rates(drv, ret, 1);
3329
a35187e7
KH		 3330 return ret;
3331}
0915d02c 3332
2135f224 3333
0915d02c
JM		 3334static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
3335{
3336 struct ieee80211_hdr *hdr;
f8b1f695
JM		 3337 u16 fc;
3338 union wpa_event_data event;
0915d02c
JM		 3339
3340 hdr = (struct ieee80211_hdr *) buf;
3341 fc = le_to_host16(hdr->frame_control);
3342
f8b1f695
JM		 3343 os_memset(&event, 0, sizeof(event));
3344 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
3345 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
3346 event.tx_status.dst = hdr->addr1;
3347 event.tx_status.data = buf;
3348 event.tx_status.data_len = len;
3349 event.tx_status.ack = ok;
3350 wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
0915d02c
JM		 3351}
3352
3353
4b9841d3 3354static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
0d9fc3d8 3355 u8 *buf, size_t len)
0915d02c 3356{
f8b1f695
JM		 3357 union wpa_event_data event;
3358 os_memset(&event, 0, sizeof(event));
0d9fc3d8 3359 event.rx_from_unknown.frame = buf;
f8b1f695
JM		 3360 event.rx_from_unknown.len = len;
3361 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
4b9841d3 3362}
0915d02c 3363
4b9841d3
JM		 3364
3365static void handle_frame(struct wpa_driver_nl80211_data *drv,
2a8b7416 3366 u8 *buf, size_t len, int datarate, int ssi_signal)
4b9841d3
JM		 3367{
3368 struct ieee80211_hdr *hdr;
f8b1f695
JM		 3369 u16 fc;
3370 union wpa_event_data event;
0915d02c
JM		 3371
3372 hdr = (struct ieee80211_hdr *) buf;
3373 fc = le_to_host16(hdr->frame_control);
0915d02c 3374
4b9841d3 3375 switch (WLAN_FC_GET_TYPE(fc)) {
0915d02c 3376 case WLAN_FC_TYPE_MGMT:
f8b1f695
JM		 3377 os_memset(&event, 0, sizeof(event));
3378 event.rx_mgmt.frame = buf;
3379 event.rx_mgmt.frame_len = len;
2a8b7416
JM		 3380 event.rx_mgmt.datarate = datarate;
3381 event.rx_mgmt.ssi_signal = ssi_signal;
f8b1f695 3382 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
0915d02c
JM		 3383 break;
3384 case WLAN_FC_TYPE_CTRL:
3385 /* can only get here with PS-Poll frames */
3386 wpa_printf(MSG_DEBUG, "CTRL");
0d9fc3d8 3387 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3388 break;
3389 case WLAN_FC_TYPE_DATA:
0d9fc3d8 3390 from_unknown_sta(drv, buf, len);
0915d02c
JM		 3391 break;
3392 }
3393}
3394
3395
3396static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
3397{
3398 struct wpa_driver_nl80211_data *drv = eloop_ctx;
3399 int len;
3400 unsigned char buf[3000];
3401 struct ieee80211_radiotap_iterator iter;
3402 int ret;
2a8b7416 3403 int datarate = 0, ssi_signal = 0;
4b9841d3 3404 int injected = 0, failed = 0, rxflags = 0;
0915d02c
JM		 3405
3406 len = recv(sock, buf, sizeof(buf), 0);
3407 if (len < 0) {
3408 perror("recv");
3409 return;
3410 }
3411
504e905c
JM		 3412 if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
3413 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
3414 "frame since Probe Request reporting is disabled");
3415 return;
3416 }
3417
0915d02c
JM		 3418 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
3419 printf("received invalid radiotap frame\n");
3420 return;
3421 }
3422
0915d02c
JM		 3423 while (1) {
3424 ret = ieee80211_radiotap_iterator_next(&iter);
3425 if (ret == -ENOENT)
3426 break;
3427 if (ret) {
3428 printf("received invalid radiotap frame (%d)\n", ret);
3429 return;
3430 }
3431 switch (iter.this_arg_index) {
3432 case IEEE80211_RADIOTAP_FLAGS:
3433 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
3434 len -= 4;
3435 break;
3436 case IEEE80211_RADIOTAP_RX_FLAGS:
3437 rxflags = 1;
3438 break;
3439 case IEEE80211_RADIOTAP_TX_FLAGS:
3440 injected = 1;
3441 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
3442 IEEE80211_RADIOTAP_F_TX_FAIL;
3443 break;
3444 case IEEE80211_RADIOTAP_DATA_RETRIES:
3445 break;
3446 case IEEE80211_RADIOTAP_CHANNEL:
2a8b7416 3447 /* TODO: convert from freq/flags to channel number */
0915d02c
JM		 3448 break;
3449 case IEEE80211_RADIOTAP_RATE:
2a8b7416 3450 datarate = *iter.this_arg * 5;
0915d02c
JM		 3451 break;
3452 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2a8b7416 3453 ssi_signal = *iter.this_arg;
0915d02c
JM		 3454 break;
3455 }
3456 }
3457
3458 if (rxflags && injected)
3459 return;
3460
3461 if (!injected)
4b9841d3 3462 handle_frame(drv, buf + iter.max_length,
2a8b7416 3463 len - iter.max_length, datarate, ssi_signal);
0915d02c 3464 else
4b9841d3
JM		 3465 handle_tx_callback(drv->ctx, buf + iter.max_length,
3466 len - iter.max_length, !failed);
0915d02c
JM		 3467}
3468
3469
3470/*
3471 * we post-process the filter code later and rewrite
3472 * this to the offset to the last instruction
3473 */
3474#define PASS 0xFF
3475#define FAIL 0xFE
3476
3477static struct sock_filter msock_filter_insns[] = {
3478 /*
3479 * do a little-endian load of the radiotap length field
3480 */
3481 /* load lower byte into A */
3482 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
3483 /* put it into X (== index register) */
3484 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3485 /* load upper byte into A */
3486 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
3487 /* left-shift it by 8 */
3488 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
3489 /* or with X */
3490 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
3491 /* put result into X */
3492 BPF_STMT(BPF_MISC| BPF_TAX, 0),
3493
3494 /*
3495 * Allow management frames through, this also gives us those
3496 * management frames that we sent ourselves with status
3497 */
3498 /* load the lower byte of the IEEE 802.11 frame control field */
3499 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3500 /* mask off frame type and version */
3501 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
3502 /* accept frame if it's both 0, fall through otherwise */
3503 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
3504
3505 /*
3506 * TODO: add a bit to radiotap RX flags that indicates
3507 * that the sending station is not associated, then
3508 * add a filter here that filters on our DA and that flag
3509 * to allow us to deauth frames to that bad station.
3510 *
3511 * Not a regression -- we didn't do it before either.
3512 */
3513
3514#if 0
3515 /*
fbbfcbac 3516 * drop non-data frames
0915d02c
JM		 3517 */
3518 /* load the lower byte of the frame control field */
3519 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3520 /* mask off QoS bit */
3521 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
3522 /* drop non-data frames */
3523 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
fbbfcbac 3524#endif
0915d02c 3525 /* load the upper byte of the frame control field */
fbbfcbac 3526 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
0915d02c
JM		 3527 /* mask off toDS/fromDS */
3528 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
fbbfcbac
FF		 3529 /* accept WDS frames */
3530 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
0915d02c
JM		 3531
3532 /*
3533 * add header length to index
3534 */
3535 /* load the lower byte of the frame control field */
3536 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
3537 /* mask off QoS bit */
3538 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
3539 /* right shift it by 6 to give 0 or 2 */
3540 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
3541 /* add data frame header length */
3542 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
3543 /* add index, was start of 802.11 header */
3544 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
3545 /* move to index, now start of LL header */
3546 BPF_STMT(BPF_MISC | BPF_TAX, 0),
3547
3548 /*
3549 * Accept empty data frames, we use those for
3550 * polling activity.
3551 */
3552 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
3553 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
3554
3555 /*
3556 * Accept EAPOL frames
3557 */
3558 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
3559 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
3560 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
3561 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
3562
3563 /* keep these last two statements or change the code below */
3564 /* return 0 == "DROP" */
3565 BPF_STMT(BPF_RET | BPF_K, 0),
3566 /* return ~0 == "keep all" */
3567 BPF_STMT(BPF_RET | BPF_K, ~0),
3568};
3569
3570static struct sock_fprog msock_filter = {
3571 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
3572 .filter = msock_filter_insns,
3573};
3574
3575
3576static int add_monitor_filter(int s)
3577{
3578 int idx;
3579
3580 /* rewrite all PASS/FAIL jump offsets */
3581 for (idx = 0; idx < msock_filter.len; idx++) {
3582 struct sock_filter *insn = &msock_filter_insns[idx];
3583
3584 if (BPF_CLASS(insn->code) == BPF_JMP) {
3585 if (insn->code == (BPF_JMP|BPF_JA)) {
3586 if (insn->k == PASS)
3587 insn->k = msock_filter.len - idx - 2;
3588 else if (insn->k == FAIL)
3589 insn->k = msock_filter.len - idx - 3;
3590 }
3591
3592 if (insn->jt == PASS)
3593 insn->jt = msock_filter.len - idx - 2;
3594 else if (insn->jt == FAIL)
3595 insn->jt = msock_filter.len - idx - 3;
3596
3597 if (insn->jf == PASS)
3598 insn->jf = msock_filter.len - idx - 2;
3599 else if (insn->jf == FAIL)
3600 insn->jf = msock_filter.len - idx - 3;
3601 }
3602 }
3603
3604 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3605 &msock_filter, sizeof(msock_filter))) {
3606 perror("SO_ATTACH_FILTER");
3607 return -1;
3608 }
3609
3610 return 0;
3611}
3612
3613
460456f8
JM		 3614static void nl80211_remove_monitor_interface(
3615 struct wpa_driver_nl80211_data *drv)
3616{
3617 if (drv->monitor_ifidx >= 0) {
3618 nl80211_remove_iface(drv, drv->monitor_ifidx);
3619 drv->monitor_ifidx = -1;
3620 }
504e905c
JM		 3621 if (drv->monitor_sock >= 0) {
3622 eloop_unregister_read_sock(drv->monitor_sock);
3623 close(drv->monitor_sock);
3624 drv->monitor_sock = -1;
3625 }
460456f8
JM		 3626}
3627
3628
0915d02c
JM		 3629static int
3630nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3631{
3632 char buf[IFNAMSIZ];
3633 struct sockaddr_ll ll;
3634 int optval;
3635 socklen_t optlen;
0915d02c 3636
a2e40bb6 3637 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
0915d02c
JM		 3638 buf[IFNAMSIZ - 1] = '\0';
3639
3640 drv->monitor_ifidx =
fbbfcbac
FF		 3641 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3642 0);
0915d02c
JM		 3643
3644 if (drv->monitor_ifidx < 0)
3645 return -1;
3646
34f2f814 3647 if (linux_set_iface_flags(drv->ioctl_sock, buf, 1))
0915d02c 3648 goto error;
0915d02c
JM		 3649
3650 memset(&ll, 0, sizeof(ll));
3651 ll.sll_family = AF_PACKET;
3652 ll.sll_ifindex = drv->monitor_ifidx;
3653 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3654 if (drv->monitor_sock < 0) {
3655 perror("socket[PF_PACKET,SOCK_RAW]");
3656 goto error;
3657 }
3658
3659 if (add_monitor_filter(drv->monitor_sock)) {
3660 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3661 "interface; do filtering in user space");
3662 /* This works, but will cost in performance. */
3663 }
3664
2135f224 3665 if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
0915d02c
JM		 3666 perror("monitor socket bind");
3667 goto error;
3668 }
3669
3670 optlen = sizeof(optval);
3671 optval = 20;
3672 if (setsockopt
3673 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3674 perror("Failed to set socket priority");
3675 goto error;
3676 }
3677
3678 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3679 drv, NULL)) {
3680 printf("Could not register monitor read socket\n");
3681 goto error;
3682 }
3683
3684 return 0;
3685 error:
460456f8 3686 nl80211_remove_monitor_interface(drv);
0915d02c
JM		 3687 return -1;
3688}
3689
db149ac9
JM		 3690
3691static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3692
3693static int wpa_driver_nl80211_hapd_send_eapol(
3694 void *priv, const u8 *addr, const u8 *data,
3695 size_t data_len, int encrypt, const u8 *own_addr)
3696{
a2e40bb6
FF		 3697 struct i802_bss *bss = priv;
3698 struct wpa_driver_nl80211_data *drv = bss->drv;
db149ac9
JM		 3699 struct ieee80211_hdr *hdr;
3700 size_t len;
3701 u8 *pos;
3702 int res;
3703#if 0 /* FIX */
0de39516 3704 int qos = sta->flags & WPA_STA_WMM;
db149ac9
JM		 3705#else
3706 int qos = 0;
3707#endif
3708
3709 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3710 data_len;
3711 hdr = os_zalloc(len);
3712 if (hdr == NULL) {
3713 printf("malloc() failed for i802_send_data(len=%lu)\n",
3714 (unsigned long) len);
3715 return -1;
3716 }
3717
3718 hdr->frame_control =
3719 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3720 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3721 if (encrypt)
3722 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3723#if 0 /* To be enabled if qos determination is added above */
3724 if (qos) {
3725 hdr->frame_control |=
3726 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3727 }
3728#endif
3729
3730 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3731 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3732 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3733 pos = (u8 *) (hdr + 1);
3734
3735#if 0 /* To be enabled if qos determination is added above */
3736 if (qos) {
3737 /* add an empty QoS header if needed */
3738 pos[0] = 0;
3739 pos[1] = 0;
3740 pos += 2;
3741 }
3742#endif
3743
3744 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3745 pos += sizeof(rfc1042_header);
3746 WPA_PUT_BE16(pos, ETH_P_PAE);
3747 pos += 2;
3748 memcpy(pos, data, data_len);
3749
3750 res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3751 if (res < 0) {
3752 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3753 "failed: %d (%s)",
3754 (unsigned long) len, errno, strerror(errno));
3755 }
7bf12757 3756 os_free(hdr);
db149ac9
JM		 3757
3758 return res;
3759}
3760
a8d6ffa4 3761
7e76ee9c
JM		 3762static u32 sta_flags_nl80211(int flags)
3763{
3764 u32 f = 0;
3765
0de39516 3766 if (flags & WPA_STA_AUTHORIZED)
7e76ee9c 3767 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
0de39516 3768 if (flags & WPA_STA_WMM)
7e76ee9c 3769 f |= BIT(NL80211_STA_FLAG_WME);
0de39516 3770 if (flags & WPA_STA_SHORT_PREAMBLE)
7e76ee9c 3771 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
0de39516 3772 if (flags & WPA_STA_MFP)
7e76ee9c
JM		 3773 f |= BIT(NL80211_STA_FLAG_MFP);
3774
3775 return f;
3776}
3777
3778
3234cba4
JM		 3779static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3780 int total_flags,
4c32757d 3781 int flags_or, int flags_and)
a8d6ffa4 3782{
a2e40bb6
FF		 3783 struct i802_bss *bss = priv;
3784 struct wpa_driver_nl80211_data *drv = bss->drv;
a8d6ffa4 3785 struct nl_msg *msg, *flags = NULL;
7e76ee9c 3786 struct nl80211_sta_flag_update upd;
a8d6ffa4
JM		 3787
3788 msg = nlmsg_alloc();
3789 if (!msg)
3790 return -ENOMEM;
3791
3792 flags = nlmsg_alloc();
3793 if (!flags) {
3794 nlmsg_free(msg);
3795 return -ENOMEM;
3796 }
3797
3798 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3799 0, NL80211_CMD_SET_STATION, 0);
3800
3801 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3234cba4 3802 if_nametoindex(bss->ifname));
a8d6ffa4
JM		 3803 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3804
7e76ee9c
JM		 3805 /*
3806 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3807 * can be removed eventually.
3808 */
0de39516 3809 if (total_flags & WPA_STA_AUTHORIZED)
a8d6ffa4
JM		 3810 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3811
0de39516 3812 if (total_flags & WPA_STA_WMM)
a8d6ffa4
JM		 3813 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3814
0de39516 3815 if (total_flags & WPA_STA_SHORT_PREAMBLE)
a8d6ffa4
JM		 3816 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3817
0de39516 3818 if (total_flags & WPA_STA_MFP)
a8d6ffa4
JM		 3819 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3820
3821 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3822 goto nla_put_failure;
3823
7e76ee9c
JM		 3824 os_memset(&upd, 0, sizeof(upd));
3825 upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3826 upd.set = sta_flags_nl80211(flags_or);
3827 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3828
a8d6ffa4
JM		 3829 nlmsg_free(flags);
3830
3831 return send_and_recv_msgs(drv, msg, NULL, NULL);
3832 nla_put_failure:
3833 nlmsg_free(flags);
3834 return -ENOBUFS;
3835}
3836
0915d02c 3837
1581b38b
JM		 3838static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3839 struct wpa_driver_associate_params *params)
3840{
046b26a2
JM		 3841 if (params->p2p)
3842 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
3843 "group (GO)");
a2e40bb6 3844 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode) ||
f019981a 3845 wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
460456f8 3846 nl80211_remove_monitor_interface(drv);
1581b38b 3847 return -1;
0915d02c 3848 }
1581b38b
JM		 3849
3850 /* TODO: setup monitor interface (and add code somewhere to remove this
3851 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
1581b38b
JM		 3852
3853 return 0;
3854}
1581b38b
JM		 3855
3856
5cc4d64b
JM		 3857static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3858{
3859 struct nl_msg *msg;
3860 int ret = -1;
3861
3862 msg = nlmsg_alloc();
3863 if (!msg)
3864 return -1;
3865
3866 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3867 NL80211_CMD_LEAVE_IBSS, 0);
3868 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3869 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3870 msg = NULL;
3871 if (ret) {
3872 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3873 "(%s)", ret, strerror(-ret));
3874 goto nla_put_failure;
3875 }
3876
3877 ret = 0;
3878 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3879
3880nla_put_failure:
3881 nlmsg_free(msg);
3882 return ret;
3883}
3884
3885
3886static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3887 struct wpa_driver_associate_params *params)
3888{
3889 struct nl_msg *msg;
3890 int ret = -1;
3891 int count = 0;
3892
3893 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3894
a2e40bb6 3895 if (wpa_driver_nl80211_set_mode(&drv->first_bss, params->mode)) {
5cc4d64b
JM		 3896 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3897 "IBSS mode");
3898 return -1;
3899 }
3900
3901retry:
3902 msg = nlmsg_alloc();
3903 if (!msg)
3904 return -1;
3905
3906 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3907 NL80211_CMD_JOIN_IBSS, 0);
3908 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3909
3910 if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3911 goto nla_put_failure;
3912
3913 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3914 params->ssid, params->ssid_len);
3915 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3916 params->ssid);
3917 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3918 drv->ssid_len = params->ssid_len;
3919
3920 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3921 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3922
3923 ret = nl80211_set_conn_keys(params, msg);
3924 if (ret)
3925 goto nla_put_failure;
3926
a95795ad
JM		 3927 if (params->wpa_ie) {
3928 wpa_hexdump(MSG_DEBUG,
3929 " * Extra IEs for Beacon/Probe Response frames",
3930 params->wpa_ie, params->wpa_ie_len);
3931 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3932 params->wpa_ie);
3933 }
3934
5cc4d64b
JM		 3935 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3936 msg = NULL;
3937 if (ret) {
3938 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3939 ret, strerror(-ret));
3940 count++;
3941 if (ret == -EALREADY && count == 1) {
3942 wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3943 "forced leave");
3944 nl80211_leave_ibss(drv);
3945 nlmsg_free(msg);
3946 goto retry;
3947 }
3948
3949 goto nla_put_failure;
3950 }
3951 ret = 0;
3952 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3953
3954nla_put_failure:
3955 nlmsg_free(msg);
3956 return ret;
3957}
3958
3959
cfaab580
ZY		 3960static int wpa_driver_nl80211_connect(
3961 struct wpa_driver_nl80211_data *drv,
3962 struct wpa_driver_associate_params *params)
3963{
3964 struct nl_msg *msg;
3965 enum nl80211_auth_type type;
3966 int ret = 0;
3967
3968 msg = nlmsg_alloc();
3969 if (!msg)
3970 return -1;
3971
3972 wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3973 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3974 NL80211_CMD_CONNECT, 0);
3975
3976 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3977 if (params->bssid) {
3978 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
3979 MAC2STR(params->bssid));
3980 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3981 }
3982 if (params->freq) {
3983 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
3984 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3985 }
3986 if (params->ssid) {
3987 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
3988 params->ssid, params->ssid_len);
3989 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3990 params->ssid);
3991 if (params->ssid_len > sizeof(drv->ssid))
3992 goto nla_put_failure;
3993 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3994 drv->ssid_len = params->ssid_len;
3995 }
3996 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
3997 if (params->wpa_ie)
3998 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3999 params->wpa_ie);
4000
abd9fafa 4001 if (params->auth_alg & WPA_AUTH_ALG_OPEN)
cfaab580 4002 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
abd9fafa 4003 else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
cfaab580 4004 type = NL80211_AUTHTYPE_SHARED_KEY;
abd9fafa 4005 else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
cfaab580 4006 type = NL80211_AUTHTYPE_NETWORK_EAP;
abd9fafa 4007 else if (params->auth_alg & WPA_AUTH_ALG_FT)
cfaab580
ZY		 4008 type = NL80211_AUTHTYPE_FT;
4009 else
4010 goto nla_put_failure;
4011
4012 wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
4013 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4014
4015 if (params->wpa_ie && params->wpa_ie_len) {
4016 enum nl80211_wpa_versions ver;
4017
4018 if (params->wpa_ie[0] == WLAN_EID_RSN)
4019 ver = NL80211_WPA_VERSION_2;
4020 else
4021 ver = NL80211_WPA_VERSION_1;
4022
4023 wpa_printf(MSG_DEBUG, " * WPA Version %d", ver);
4024 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
4025 }
4026
4027 if (params->pairwise_suite != CIPHER_NONE) {
c1bb3e0a 4028 int cipher;
cfaab580
ZY		 4029
4030 switch (params->pairwise_suite) {
4031 case CIPHER_WEP40:
4032 cipher = WLAN_CIPHER_SUITE_WEP40;
4033 break;
4034 case CIPHER_WEP104:
4035 cipher = WLAN_CIPHER_SUITE_WEP104;
4036 break;
4037 case CIPHER_CCMP:
4038 cipher = WLAN_CIPHER_SUITE_CCMP;
4039 break;
4040 case CIPHER_TKIP:
4041 default:
4042 cipher = WLAN_CIPHER_SUITE_TKIP;
4043 break;
4044 }
4045 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
4046 }
4047
4048 if (params->group_suite != CIPHER_NONE) {
c1bb3e0a 4049 int cipher;
cfaab580
ZY		 4050
4051 switch (params->group_suite) {
4052 case CIPHER_WEP40:
4053 cipher = WLAN_CIPHER_SUITE_WEP40;
4054 break;
4055 case CIPHER_WEP104:
4056 cipher = WLAN_CIPHER_SUITE_WEP104;
4057 break;
4058 case CIPHER_CCMP:
4059 cipher = WLAN_CIPHER_SUITE_CCMP;
4060 break;
4061 case CIPHER_TKIP:
4062 default:
4063 cipher = WLAN_CIPHER_SUITE_TKIP;
4064 break;
4065 }
4066 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
4067 }
4068
4069 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
4070 params->key_mgmt_suite == KEY_MGMT_PSK) {
4071 int mgmt = WLAN_AKM_SUITE_PSK;
4072
4073 switch (params->key_mgmt_suite) {
4074 case KEY_MGMT_802_1X:
4075 mgmt = WLAN_AKM_SUITE_8021X;
4076 break;
4077 case KEY_MGMT_PSK:
4078 default:
4079 mgmt = WLAN_AKM_SUITE_PSK;
4080 break;
4081 }
4082 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
4083 }
4084
4085 ret = nl80211_set_conn_keys(params, msg);
4086 if (ret)
4087 goto nla_put_failure;
4088
4089 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4090 msg = NULL;
4091 if (ret) {
4092 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
4093 "(%s)", ret, strerror(-ret));
4094 goto nla_put_failure;
4095 }
4096 ret = 0;
4097 wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
4098
4099nla_put_failure:
4100 nlmsg_free(msg);
4101 return ret;
4102
4103}
4104
4105
c2a04078
JM		 4106static int wpa_driver_nl80211_associate(
4107 void *priv, struct wpa_driver_associate_params *params)
4108{
a2e40bb6
FF		 4109 struct i802_bss *bss = priv;
4110 struct wpa_driver_nl80211_data *drv = bss->drv;
c2a04078
JM		 4111 int ret = -1;
4112 struct nl_msg *msg;
4113
5cc4d64b 4114 if (params->mode == IEEE80211_MODE_AP)
1581b38b 4115 return wpa_driver_nl80211_ap(drv, params);
1581b38b 4116
5cc4d64b
JM		 4117 if (params->mode == IEEE80211_MODE_IBSS)
4118 return wpa_driver_nl80211_ibss(drv, params);
4119
4a867032 4120 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
a2e40bb6 4121 if (wpa_driver_nl80211_set_mode(priv, params->mode) < 0)
4a867032 4122 return -1;
cfaab580 4123 return wpa_driver_nl80211_connect(drv, params);
4a867032 4124 }
cfaab580 4125
c2a04078
JM		 4126 drv->associated = 0;
4127
4128 msg = nlmsg_alloc();
4129 if (!msg)
4130 return -1;
4131
4132 wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
4133 drv->ifindex);
4134 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4135 NL80211_CMD_ASSOCIATE, 0);
4136
4137 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4138 if (params->bssid) {
4139 wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
4140 MAC2STR(params->bssid));
4141 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4142 }
4143 if (params->freq) {
4144 wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
4145 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4832ecd7
JM		 4146 drv->assoc_freq = params->freq;
4147 } else
4148 drv->assoc_freq = 0;
c2a04078
JM		 4149 if (params->ssid) {
4150 wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
4151 params->ssid, params->ssid_len);
4152 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4153 params->ssid);
fd05d64e
JM		 4154 if (params->ssid_len > sizeof(drv->ssid))
4155 goto nla_put_failure;
4156 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
4157 drv->ssid_len = params->ssid_len;
c2a04078
JM		 4158 }
4159 wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
4160 if (params->wpa_ie)
4161 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
4162 params->wpa_ie);
4163
e572fa33
JM		 4164#ifdef CONFIG_IEEE80211W
4165 if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
4166 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
4167#endif /* CONFIG_IEEE80211W */
4168
01652550
JM		 4169 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
4170
62fa124c
JM		 4171 if (params->prev_bssid) {
4172 wpa_printf(MSG_DEBUG, " * prev_bssid=" MACSTR,
4173 MAC2STR(params->prev_bssid));
4174 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
4175 params->prev_bssid);
4176 }
4177
046b26a2
JM		 4178 if (params->p2p)
4179 wpa_printf(MSG_DEBUG, " * P2P group");
4180
c2a04078
JM		 4181 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4182 msg = NULL;
4183 if (ret) {
4184 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
4185 "(%s)", ret, strerror(-ret));
8856462d 4186 nl80211_dump_scan(drv);
c2a04078
JM		 4187 goto nla_put_failure;
4188 }
4189 ret = 0;
4190 wpa_printf(MSG_DEBUG, "nl80211: Association request send "
4191 "successfully");
4192
4193nla_put_failure:
4194 nlmsg_free(msg);
4195 return ret;
4196}
3f5285e8
JM		 4197
4198
ad1e68e6
JM		 4199static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
4200 int ifindex, int mode)
3f5285e8 4201{
3f5285e8 4202 struct nl_msg *msg;
ad1e68e6
JM		 4203 int ret = -ENOBUFS;
4204
4205 msg = nlmsg_alloc();
4206 if (!msg)
4207 return -ENOMEM;
4208
4209 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4210 0, NL80211_CMD_SET_INTERFACE, 0);
4211 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4212 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
4213
4214 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4215 if (!ret)
4216 return 0;
4217nla_put_failure:
4218 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
4219 " %d (%s)", ifindex, mode, ret, strerror(-ret));
4220 return ret;
4221}
4222
4223
4224static int wpa_driver_nl80211_set_mode(void *priv, int mode)
4225{
a2e40bb6
FF		 4226 struct i802_bss *bss = priv;
4227 struct wpa_driver_nl80211_data *drv = bss->drv;
ad1e68e6 4228 int ret = -1;
1581b38b 4229 int nlmode;
26af9dca 4230 int i;
1581b38b
JM		 4231
4232 switch (mode) {
4233 case 0:
4234 nlmode = NL80211_IFTYPE_STATION;
4235 break;
4236 case 1:
4237 nlmode = NL80211_IFTYPE_ADHOC;
4238 break;
4239 case 2:
4240 nlmode = NL80211_IFTYPE_AP;
4241 break;
4242 default:
4243 return -1;
4244 }
3f5285e8 4245
ad1e68e6
JM		 4246 if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
4247 drv->nlmode = nlmode;
460456f8
JM		 4248 ret = 0;
4249 goto done;
ad1e68e6 4250 }
3f5285e8 4251
460456f8 4252 if (nlmode == drv->nlmode) {
c6e8e8e4
JM		 4253 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
4254 "requested mode - ignore error");
460456f8
JM		 4255 ret = 0;
4256 goto done; /* Already in the requested mode */
4257 }
3f5285e8 4258
3f5285e8
JM		 4259 /* mac80211 doesn't allow mode changes while the device is up, so
4260 * take the device down, try to set the mode again, and bring the
4261 * device back up.
4262 */
26af9dca
JM		 4263 wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
4264 "interface down");
4265 for (i = 0; i < 10; i++) {
4266 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0) ==
4267 0) {
4268 /* Try to set the mode again while the interface is
4269 * down */
4270 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
4271 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname,
4272 1))
4273 ret = -1;
4274 if (!ret)
4275 break;
4276 } else
4277 wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
4278 "interface down");
4279 os_sleep(0, 100000);
3f5285e8
JM		 4280 }
4281
c6e8e8e4
JM		 4282 if (!ret) {
4283 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
4284 "interface is down");
ad1e68e6 4285 drv->nlmode = nlmode;
c6e8e8e4 4286 }
ad1e68e6 4287
460456f8 4288done:
460456f8
JM		 4289 if (!ret && nlmode == NL80211_IFTYPE_AP) {
4290 /* Setup additional AP mode functionality if needed */
4291 if (drv->monitor_ifidx < 0 &&
4292 nl80211_create_monitor_interface(drv))
4293 return -1;
4294 } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
4295 /* Remove additional AP mode functionality */
4296 nl80211_remove_monitor_interface(drv);
a2e40bb6 4297 bss->beacon_set = 0;
460456f8 4298 }
460456f8 4299
c6e8e8e4
JM		 4300 if (ret)
4301 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
4302 "from %d failed", nlmode, drv->nlmode);
4303
3f5285e8
JM		 4304 return ret;
4305}
4306
4307
3f5285e8
JM		 4308static int wpa_driver_nl80211_get_capa(void *priv,
4309 struct wpa_driver_capa *capa)
4310{
a2e40bb6
FF		 4311 struct i802_bss *bss = priv;
4312 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8
JM		 4313 if (!drv->has_capability)
4314 return -1;
4315 os_memcpy(capa, &drv->capa, sizeof(*capa));
4316 return 0;
4317}
4318
4319
4320static int wpa_driver_nl80211_set_operstate(void *priv, int state)
4321{
a2e40bb6
FF		 4322 struct i802_bss *bss = priv;
4323 struct wpa_driver_nl80211_data *drv = bss->drv;
3f5285e8
JM		 4324
4325 wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
4326 __func__, drv->operstate, state, state ? "UP" : "DORMANT");
4327 drv->operstate = state;
08063178 4328 return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
e2d02c29 4329 state ? IF_OPER_UP : IF_OPER_DORMANT);
3f5285e8
JM		 4330}
4331
01652550
JM		 4332
4333static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
4334{
a2e40bb6
FF		 4335 struct i802_bss *bss = priv;
4336 struct wpa_driver_nl80211_data *drv = bss->drv;
01652550
JM		 4337 struct nl_msg *msg;
4338 struct nl80211_sta_flag_update upd;
4339
4340 msg = nlmsg_alloc();
4341 if (!msg)
4342 return -ENOMEM;
4343
4344 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4345 0, NL80211_CMD_SET_STATION, 0);
4346
4347 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4348 if_nametoindex(bss->ifname));
01652550
JM		 4349 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
4350
4351 os_memset(&upd, 0, sizeof(upd));
4352 upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
4353 if (authorized)
4354 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
4355 NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
4356
4357 return send_and_recv_msgs(drv, msg, NULL, NULL);
4358 nla_put_failure:
4359 return -ENOBUFS;
4360}
4361
3f5285e8 4362
c5121837
JM		 4363#ifdef HOSTAPD
4364
c5121837
JM		 4365static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4366{
4367 int i;
4368 int *old;
4369
4370 wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
4371 ifidx);
4372 for (i = 0; i < drv->num_if_indices; i++) {
4373 if (drv->if_indices[i] == 0) {
4374 drv->if_indices[i] = ifidx;
4375 return;
4376 }
4377 }
4378
4379 if (drv->if_indices != drv->default_if_indices)
4380 old = drv->if_indices;
4381 else
4382 old = NULL;
4383
7bf12757
JM		 4384 drv->if_indices = os_realloc(old,
4385 sizeof(int) * (drv->num_if_indices + 1));
c5121837
JM		 4386 if (!drv->if_indices) {
4387 if (!old)
4388 drv->if_indices = drv->default_if_indices;
4389 else
4390 drv->if_indices = old;
4391 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
4392 "interfaces");
4393 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
4394 return;
0ab7a701
B		 4395 } else if (!old)
4396 os_memcpy(drv->if_indices, drv->default_if_indices,
4397 sizeof(drv->default_if_indices));
c5121837
JM		 4398 drv->if_indices[drv->num_if_indices] = ifidx;
4399 drv->num_if_indices++;
4400}
4401
4402
4403static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4404{
4405 int i;
4406
4407 for (i = 0; i < drv->num_if_indices; i++) {
4408 if (drv->if_indices[i] == ifidx) {
4409 drv->if_indices[i] = 0;
4410 break;
4411 }
4412 }
4413}
4414
4415
4416static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
4417{
4418 int i;
4419
4420 for (i = 0; i < drv->num_if_indices; i++)
4421 if (drv->if_indices[i] == ifidx)
4422 return 1;
4423
4424 return 0;
4425}
4426
4427
c5121837
JM		 4428static inline int min_int(int a, int b)
4429{
4430 if (a < b)
4431 return a;
4432 return b;
4433}
4434
4435
4436static int get_key_handler(struct nl_msg *msg, void *arg)
4437{
4438 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4439 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4440
4441 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4442 genlmsg_attrlen(gnlh, 0), NULL);
4443
4444 /*
4445 * TODO: validate the key index and mac address!
4446 * Otherwise, there's a race condition as soon as
4447 * the kernel starts sending key notifications.
4448 */
4449
4450 if (tb[NL80211_ATTR_KEY_SEQ])
4451 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
4452 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
4453 return NL_SKIP;
4454}
4455
4456
4457static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
4458 int idx, u8 *seq)
4459{
a2e40bb6
FF		 4460 struct i802_bss *bss = priv;
4461 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4462 struct nl_msg *msg;
4463
4464 msg = nlmsg_alloc();
4465 if (!msg)
4466 return -ENOMEM;
4467
4468 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4469 0, NL80211_CMD_GET_KEY, 0);
4470
4471 if (addr)
4472 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4473 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
4474 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
4475
4476 memset(seq, 0, 6);
4477
4478 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
4479 nla_put_failure:
4480 return -ENOBUFS;
4481}
4482
4483
4484static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
4485 int mode)
4486{
a2e40bb6
FF		 4487 struct i802_bss *bss = priv;
4488 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4489 struct nl_msg *msg;
4490 u8 rates[NL80211_MAX_SUPP_RATES];
4491 u8 rates_len = 0;
4492 int i;
4493
4494 msg = nlmsg_alloc();
4495 if (!msg)
4496 return -ENOMEM;
4497
4498 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4499 NL80211_CMD_SET_BSS, 0);
4500
4501 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
4502 rates[rates_len++] = basic_rates[i] / 5;
4503
4504 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
4505
a2e40bb6 4506 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4507
4508 return send_and_recv_msgs(drv, msg, NULL, NULL);
4509 nla_put_failure:
4510 return -ENOBUFS;
4511}
4512
e3802622
JM		 4513#endif /* HOSTAPD */
4514
c5121837 4515
c5121837
JM		 4516/* Set kernel driver on given frequency (MHz) */
4517static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
4518{
a2e40bb6
FF		 4519 struct i802_bss *bss = priv;
4520 struct wpa_driver_nl80211_data *drv = bss->drv;
f019981a
JM		 4521 return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
4522 freq->sec_channel_offset);
c5121837
JM		 4523}
4524
4525
e3802622
JM		 4526#ifdef HOSTAPD
4527
c5121837
JM		 4528static int i802_set_rts(void *priv, int rts)
4529{
a2e40bb6
FF		 4530 struct i802_bss *bss = priv;
4531 struct wpa_driver_nl80211_data *drv = bss->drv;
ad649451
JM		 4532 struct nl_msg *msg;
4533 int ret = -ENOBUFS;
4534 u32 val;
c5121837 4535
ad649451
JM		 4536 msg = nlmsg_alloc();
4537 if (!msg)
4538 return -ENOMEM;
c5121837 4539
ad649451
JM		 4540 if (rts >= 2347)
4541 val = (u32) -1;
4542 else
4543 val = rts;
c5121837 4544
ad649451
JM		 4545 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4546 0, NL80211_CMD_SET_WIPHY, 0);
4547 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4548 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
4549
4550 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4551 if (!ret)
4552 return 0;
4553nla_put_failure:
4554 wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
4555 "%d (%s)", rts, ret, strerror(-ret));
4556 return ret;
c5121837
JM		 4557}
4558
4559
4560static int i802_set_frag(void *priv, int frag)
4561{
a2e40bb6
FF		 4562 struct i802_bss *bss = priv;
4563 struct wpa_driver_nl80211_data *drv = bss->drv;
ad649451
JM		 4564 struct nl_msg *msg;
4565 int ret = -ENOBUFS;
4566 u32 val;
c5121837 4567
ad649451
JM		 4568 msg = nlmsg_alloc();
4569 if (!msg)
4570 return -ENOMEM;
c5121837 4571
ad649451
JM		 4572 if (frag >= 2346)
4573 val = (u32) -1;
4574 else
4575 val = frag;
c5121837 4576
ad649451
JM		 4577 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4578 0, NL80211_CMD_SET_WIPHY, 0);
4579 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4580 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
4581
4582 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4583 if (!ret)
4584 return 0;
4585nla_put_failure:
4586 wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
4587 "%d: %d (%s)", frag, ret, strerror(-ret));
4588 return ret;
c5121837
JM		 4589}
4590
4591
c5121837
JM		 4592static int i802_flush(void *priv)
4593{
a2e40bb6
FF		 4594 struct i802_bss *bss = priv;
4595 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4596 struct nl_msg *msg;
4597
4598 msg = nlmsg_alloc();
4599 if (!msg)
4600 return -1;
4601
4602 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4603 0, NL80211_CMD_DEL_STATION, 0);
4604
4605 /*
4606 * XXX: FIX! this needs to flush all VLANs too
4607 */
4608 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4609 if_nametoindex(bss->ifname));
c5121837
JM		 4610
4611 return send_and_recv_msgs(drv, msg, NULL, NULL);
4612 nla_put_failure:
4613 return -ENOBUFS;
4614}
4615
4616
4617static int get_sta_handler(struct nl_msg *msg, void *arg)
4618{
4619 struct nlattr *tb[NL80211_ATTR_MAX + 1];
4620 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4621 struct hostap_sta_driver_data *data = arg;
4622 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4623 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4624 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4625 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4626 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4627 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4628 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4629 };
4630
4631 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4632 genlmsg_attrlen(gnlh, 0), NULL);
4633
4634 /*
4635 * TODO: validate the interface and mac address!
4636 * Otherwise, there's a race condition as soon as
4637 * the kernel starts sending station notifications.
4638 */
4639
4640 if (!tb[NL80211_ATTR_STA_INFO]) {
4641 wpa_printf(MSG_DEBUG, "sta stats missing!");
4642 return NL_SKIP;
4643 }
4644 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4645 tb[NL80211_ATTR_STA_INFO],
4646 stats_policy)) {
4647 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4648 return NL_SKIP;
4649 }
4650
4651 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4652 data->inactive_msec =
4653 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4654 if (stats[NL80211_STA_INFO_RX_BYTES])
4655 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4656 if (stats[NL80211_STA_INFO_TX_BYTES])
4657 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4658 if (stats[NL80211_STA_INFO_RX_PACKETS])
4659 data->rx_packets =
4660 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4661 if (stats[NL80211_STA_INFO_TX_PACKETS])
4662 data->tx_packets =
4663 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4664
4665 return NL_SKIP;
4666}
4667
4668static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4669 const u8 *addr)
4670{
a2e40bb6
FF		 4671 struct i802_bss *bss = priv;
4672 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4673 struct nl_msg *msg;
4674
4675 os_memset(data, 0, sizeof(*data));
4676 msg = nlmsg_alloc();
4677 if (!msg)
4678 return -ENOMEM;
4679
4680 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4681 0, NL80211_CMD_GET_STATION, 0);
4682
4683 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
a2e40bb6 4684 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4685
4686 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4687 nla_put_failure:
4688 return -ENOBUFS;
4689}
4690
4691
c5121837
JM		 4692static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4693 int cw_min, int cw_max, int burst_time)
4694{
a2e40bb6
FF		 4695 struct i802_bss *bss = priv;
4696 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4697 struct nl_msg *msg;
4698 struct nlattr *txq, *params;
4699
4700 msg = nlmsg_alloc();
4701 if (!msg)
4702 return -1;
4703
4704 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4705 0, NL80211_CMD_SET_WIPHY, 0);
4706
a2e40bb6 4707 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4708
4709 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4710 if (!txq)
4711 goto nla_put_failure;
4712
4713 /* We are only sending parameters for a single TXQ at a time */
4714 params = nla_nest_start(msg, 1);
4715 if (!params)
4716 goto nla_put_failure;
4717
4718 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4719 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4720 * 32 usec, so need to convert the value here. */
4721 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4722 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4723 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4724 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4725
4726 nla_nest_end(msg, params);
4727
4728 nla_nest_end(msg, txq);
4729
4730 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4731 return 0;
4732 nla_put_failure:
4733 return -1;
4734}
4735
4736
c5121837
JM		 4737static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4738{
a2e40bb6
FF		 4739 struct i802_bss *bss = priv;
4740 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837
JM		 4741 struct nl_msg *msg;
4742
4743 msg = nlmsg_alloc();
4744 if (!msg)
4745 return -ENOMEM;
4746
4747 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4748 NL80211_CMD_SET_BSS, 0);
4749
4750 if (cts >= 0)
4751 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4752 if (preamble >= 0)
4753 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4754 if (slot >= 0)
4755 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4756
a2e40bb6 4757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
c5121837
JM		 4758
4759 return send_and_recv_msgs(drv, msg, NULL, NULL);
4760 nla_put_failure:
4761 return -ENOBUFS;
4762}
4763
4764
4765static int i802_set_cts_protect(void *priv, int value)
4766{
4767 return i802_set_bss(priv, value, -1, -1);
4768}
4769
4770
4771static int i802_set_preamble(void *priv, int value)
4772{
4773 return i802_set_bss(priv, -1, value, -1);
4774}
4775
4776
4777static int i802_set_short_slot_time(void *priv, int value)
4778{
4779 return i802_set_bss(priv, -1, -1, value);
4780}
4781
4782
c5121837
JM		 4783static int i802_set_sta_vlan(void *priv, const u8 *addr,
4784 const char *ifname, int vlan_id)
4785{
a2e40bb6
FF		 4786 struct i802_bss *bss = priv;
4787 struct wpa_driver_nl80211_data *drv = bss->drv;
c5121837 4788 struct nl_msg *msg;
cd1d72c1 4789 int ret = -ENOBUFS;
c5121837
JM		 4790
4791 msg = nlmsg_alloc();
4792 if (!msg)
4793 return -ENOMEM;
4794
4795 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4796 0, NL80211_CMD_SET_STATION, 0);
4797
4798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
a2e40bb6 4799 if_nametoindex(bss->ifname));
c5121837 4800 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1c766b09 4801 NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
c5121837
JM		 4802 if_nametoindex(ifname));
4803
cd1d72c1
JM		 4804 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4805 if (ret < 0) {
4806 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
4807 MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
4808 MAC2STR(addr), ifname, vlan_id, ret,
4809 strerror(-ret));
4810 }
c5121837 4811 nla_put_failure:
cd1d72c1 4812 return ret;
c5121837
JM		 4813}
4814
4815
fbbfcbac
FF		 4816static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4817{
a2e40bb6
FF		 4818 struct i802_bss *bss = priv;
4819 struct wpa_driver_nl80211_data *drv = bss->drv;
e748062b 4820 char name[IFNAMSIZ + 1];
fbbfcbac 4821
a2e40bb6 4822 os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
e748062b
JM		 4823 wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
4824 " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
fbbfcbac 4825 if (val) {
a2e40bb6 4826 if (nl80211_create_iface(drv, name, NL80211_IFTYPE_AP_VLAN,
fbbfcbac
FF		 4827 NULL, 1) < 0)
4828 return -1;
34f2f814 4829 linux_set_iface_flags(drv->ioctl_sock, name, 1);
fbbfcbac
FF		 4830 return i802_set_sta_vlan(priv, addr, name, 0);
4831 } else {
a2e40bb6 4832 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
fbbfcbac
FF		 4833 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4834 name);
4835 }
4836}
4837
4838
c5121837
JM		 4839static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4840{
4841 struct wpa_driver_nl80211_data *drv = eloop_ctx;
4842 struct sockaddr_ll lladdr;
4843 unsigned char buf[3000];
4844 int len;
4845 socklen_t fromlen = sizeof(lladdr);
4846
4847 len = recvfrom(sock, buf, sizeof(buf), 0,
4848 (struct sockaddr *)&lladdr, &fromlen);
4849 if (len < 0) {
4850 perror("recv");
4851 return;
4852 }
4853
baac6490
JM		 4854 if (have_ifidx(drv, lladdr.sll_ifindex))
4855 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
c5121837
JM		 4856}
4857
4858
c5121837
JM		 4859static int i802_get_inact_sec(void *priv, const u8 *addr)
4860{
4861 struct hostap_sta_driver_data data;
4862 int ret;
4863
4864 data.inactive_msec = (unsigned long) -1;
4865 ret = i802_read_sta_data(priv, &data, addr);
4866 if (ret || data.inactive_msec == (unsigned long) -1)
4867 return -1;
4868 return data.inactive_msec / 1000;
4869}
4870
4871
4872static int i802_sta_clear_stats(void *priv, const u8 *addr)
4873{
4874#if 0
4875 /* TODO */
4876#endif
4877 return 0;
4878}
4879
4880
731723a5
JM		 4881static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4882 int reason)
c5121837 4883{
a2e40bb6 4884 struct i802_bss *bss = priv;
c5121837
JM		 4885 struct ieee80211_mgmt mgmt;
4886
4887 memset(&mgmt, 0, sizeof(mgmt));
4888 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4889 WLAN_FC_STYPE_DEAUTH);
4890 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4891 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4892 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4893 mgmt.u.deauth.reason_code = host_to_le16(reason);
a2e40bb6 4894 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9f324b61
JM		 4895 IEEE80211_HDRLEN +
4896 sizeof(mgmt.u.deauth));
c5121837
JM		 4897}
4898
4899
731723a5
JM		 4900static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4901 int reason)
c5121837 4902{
a2e40bb6 4903 struct i802_bss *bss = priv;
c5121837
JM		 4904 struct ieee80211_mgmt mgmt;
4905
4906 memset(&mgmt, 0, sizeof(mgmt));
4907 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4908 WLAN_FC_STYPE_DISASSOC);
4909 memcpy(mgmt.da, addr, ETH_ALEN);
731723a5
JM		 4910 memcpy(mgmt.sa, own_addr, ETH_ALEN);
4911 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
c5121837 4912 mgmt.u.disassoc.reason_code = host_to_le16(reason);
a2e40bb6 4913 return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
9f324b61
JM		 4914 IEEE80211_HDRLEN +
4915 sizeof(mgmt.u.disassoc));
c5121837
JM		 4916}
4917
4918
94627f6c
JM		 4919static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
4920 const char *brname, const char *ifname)
4921{
4922 int ifindex;
4923 char in_br[IFNAMSIZ];
4924
4925 os_strlcpy(drv->brname, brname, IFNAMSIZ);
4926 ifindex = if_nametoindex(brname);
4927 if (ifindex == 0) {
4928 /*
4929 * Bridge was configured, but the bridge device does
4930 * not exist. Try to add it now.
4931 */
4932 if (linux_br_add(drv->ioctl_sock, brname) < 0) {
4933 wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
4934 "bridge interface %s: %s",
4935 brname, strerror(errno));
4936 return -1;
4937 }
4938 drv->added_bridge = 1;
4939 add_ifidx(drv, if_nametoindex(brname));
4940 }
4941
4942 if (linux_br_get(in_br, ifname) == 0) {
4943 if (os_strcmp(in_br, brname) == 0)
4944 return 0; /* already in the bridge */
4945
4946 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
4947 "bridge %s", ifname, in_br);
4948 if (linux_br_del_if(drv->ioctl_sock, in_br, ifname) < 0) {
4949 wpa_printf(MSG_ERROR, "nl80211: Failed to "
4950 "remove interface %s from bridge "
4951 "%s: %s",
4952 ifname, brname, strerror(errno));
4953 return -1;
4954 }
4955 }
4956
4957 wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
4958 ifname, brname);
4959 if (linux_br_add_if(drv->ioctl_sock, brname, ifname) < 0) {
4960 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
4961 "into bridge %s: %s",
4962 ifname, brname, strerror(errno));
4963 return -1;
4964 }
4965 drv->added_if_into_bridge = 1;
4966
4967 return 0;
4968}
4969
4970
92f475b4
JM		 4971static void *i802_init(struct hostapd_data *hapd,
4972 struct wpa_init_params *params)
c5121837
JM		 4973{
4974 struct wpa_driver_nl80211_data *drv;
a2e40bb6 4975 struct i802_bss *bss;
c5121837 4976 size_t i;
94627f6c
JM		 4977 char brname[IFNAMSIZ];
4978 int ifindex, br_ifindex;
4979 int br_added = 0;
c5121837 4980
a2e40bb6
FF		 4981 bss = wpa_driver_nl80211_init(hapd, params->ifname);
4982 if (bss == NULL)
c5121837 4983 return NULL;
c5121837 4984
a2e40bb6 4985 drv = bss->drv;
94627f6c
JM		 4986 if (linux_br_get(brname, params->ifname) == 0) {
4987 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
4988 params->ifname, brname);
4989 br_ifindex = if_nametoindex(brname);
4990 } else {
4991 brname[0] = '\0';
4992 br_ifindex = 0;
4993 }
4994
c5121837
JM		 4995 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4996 drv->if_indices = drv->default_if_indices;
92f475b4 4997 for (i = 0; i < params->num_bridge; i++) {
94627f6c
JM		 4998 if (params->bridge[i]) {
4999 ifindex = if_nametoindex(params->bridge[i]);
5000 if (ifindex)
5001 add_ifidx(drv, ifindex);
5002 if (ifindex == br_ifindex)
5003 br_added = 1;
5004 }
c5121837 5005 }
94627f6c
JM		 5006 if (!br_added && br_ifindex &&
5007 (params->num_bridge == 0 || !params->bridge[0]))
5008 add_ifidx(drv, br_ifindex);
c5121837 5009
ad1e68e6
JM		 5010 /* start listening for EAPOL on the default AP interface */
5011 add_ifidx(drv, drv->ifindex);
5012
a2e40bb6 5013 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 0))
6980c191 5014 goto failed;
ad1e68e6 5015
6980c191 5016 if (params->bssid) {
a2e40bb6 5017 if (linux_set_ifhwaddr(drv->ioctl_sock, bss->ifname,
2ac9688e 5018 params->bssid))
460456f8
JM		 5019 goto failed;
5020 }
ad1e68e6 5021
a2e40bb6 5022 if (wpa_driver_nl80211_set_mode(bss, IEEE80211_MODE_AP)) {
ad1e68e6 5023 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
a2e40bb6 5024 "into AP mode", bss->ifname);
bbaf0837 5025 goto failed;
ad1e68e6
JM		 5026 }
5027
94627f6c
JM		 5028 if (params->num_bridge && params->bridge[0] &&
5029 i802_check_bridge(drv, params->bridge[0], params->ifname) < 0)
5030 goto failed;
5031
a2e40bb6 5032 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1))
bbaf0837 5033 goto failed;
ad1e68e6
JM		 5034
5035 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
5036 if (drv->eapol_sock < 0) {
5037 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
bbaf0837 5038 goto failed;
ad1e68e6
JM		 5039 }
5040
5041 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
5042 {
5043 printf("Could not register read socket for eapol\n");
c5121837 5044 goto failed;
ad1e68e6
JM		 5045 }
5046
a2e40bb6 5047 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, params->own_addr))
bbaf0837 5048 goto failed;
c5121837 5049
a2e40bb6 5050 return bss;
c5121837
JM		 5051
5052failed:
460456f8 5053 nl80211_remove_monitor_interface(drv);
c5121837
JM		 5054 if (drv->ioctl_sock >= 0)
5055 close(drv->ioctl_sock);
c5121837
JM		 5056
5057 genl_family_put(drv->nl80211);
5058 nl_cache_free(drv->nl_cache);
a65a9aed 5059 nl80211_handle_destroy(drv->nl_handle);
c5121837
JM		 5060 nl_cb_put(drv->nl_cb);
5061
bbaf0837
JM		 5062 os_free(drv);
5063 return NULL;
5064}
c5121837 5065
c5121837 5066
bbaf0837
JM		 5067static void i802_deinit(void *priv)
5068{
5069 wpa_driver_nl80211_deinit(priv);
c5121837
JM		 5070}
5071
5072#endif /* HOSTAPD */
5073
5074
22a7c9d7
JM		 5075static enum nl80211_iftype wpa_driver_nl80211_if_type(
5076 enum wpa_driver_if_type type)
5077{
5078 switch (type) {
5079 case WPA_IF_STATION:
75bde05d
JM		 5080 case WPA_IF_P2P_CLIENT:
5081 case WPA_IF_P2P_GROUP:
22a7c9d7
JM		 5082 return NL80211_IFTYPE_STATION;
5083 case WPA_IF_AP_VLAN:
5084 return NL80211_IFTYPE_AP_VLAN;
5085 case WPA_IF_AP_BSS:
75bde05d 5086 case WPA_IF_P2P_GO:
22a7c9d7
JM		 5087 return NL80211_IFTYPE_AP;
5088 }
5089 return -1;
5090}
5091
5092
7ab68865 5093static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
8043e725 5094 const char *ifname, const u8 *addr,
f3585c8a
JM		 5095 void *bss_ctx, void **drv_priv,
5096 char *force_ifname, u8 *if_addr)
22a7c9d7 5097{
a2e40bb6
FF		 5098 struct i802_bss *bss = priv;
5099 struct wpa_driver_nl80211_data *drv = bss->drv;
22a7c9d7
JM		 5100 int ifidx;
5101#ifdef HOSTAPD
a2e40bb6 5102 struct i802_bss *new_bss = NULL;
22a7c9d7
JM		 5103
5104 if (type == WPA_IF_AP_BSS) {
a2e40bb6
FF		 5105 new_bss = os_zalloc(sizeof(*new_bss));
5106 if (new_bss == NULL)
22a7c9d7
JM		 5107 return -1;
5108 }
5109#endif /* HOSTAPD */
5110
f3585c8a
JM		 5111 if (addr)
5112 os_memcpy(if_addr, addr, ETH_ALEN);
22a7c9d7 5113 ifidx = nl80211_create_iface(drv, ifname,
fbbfcbac
FF		 5114 wpa_driver_nl80211_if_type(type), addr,
5115 0);
22a7c9d7
JM		 5116 if (ifidx < 0) {
5117#ifdef HOSTAPD
a2e40bb6 5118 os_free(new_bss);
22a7c9d7
JM		 5119#endif /* HOSTAPD */
5120 return -1;
5121 }
5122
f3585c8a
JM		 5123 if (!addr &&
5124 linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, if_addr) < 0)
5125 return -1;
5126
22a7c9d7
JM		 5127#ifdef HOSTAPD
5128 if (type == WPA_IF_AP_BSS) {
34f2f814
JM		 5129 if (linux_set_iface_flags(drv->ioctl_sock, ifname, 1)) {
5130 nl80211_remove_iface(drv, ifidx);
07179987 5131 os_free(new_bss);
22a7c9d7
JM		 5132 return -1;
5133 }
a2e40bb6
FF		 5134 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
5135 new_bss->ifindex = ifidx;
5136 new_bss->drv = drv;
5137 new_bss->next = drv->first_bss.next;
5138 drv->first_bss.next = new_bss;
5139 if (drv_priv)
5140 *drv_priv = new_bss;
22a7c9d7
JM		 5141 }
5142#endif /* HOSTAPD */
5143
5144 return 0;
5145}
5146
5147
5148static int wpa_driver_nl80211_if_remove(void *priv,
5149 enum wpa_driver_if_type type,
5150 const char *ifname)
5151{
a2e40bb6
FF		 5152 struct i802_bss *bss = priv;
5153 struct wpa_driver_nl80211_data *drv = bss->drv;
22a7c9d7
JM		 5154 int ifindex = if_nametoindex(ifname);
5155
e748062b
JM		 5156 wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
5157 __func__, type, ifname, ifindex);
5158 if (ifindex <= 0)
5159 return -1;
22a7c9d7
JM		 5160 nl80211_remove_iface(drv, ifindex);
5161
5162#ifdef HOSTAPD
a2e40bb6
FF		 5163 if (type != WPA_IF_AP_BSS)
5164 return 0;
5165
5166 if (bss != &drv->first_bss) {
5167 struct i802_bss *tbss = &drv->first_bss;
5168
5169 while (tbss) {
5170 if (tbss->next != bss)
5171 continue;
5172
5173 tbss->next = bss->next;
5174 os_free(bss);
5175 break;
22a7c9d7
JM		 5176 }
5177 }
5178#endif /* HOSTAPD */
5179
5180 return 0;
5181}
5182
5183
55777702
JM		 5184static int cookie_handler(struct nl_msg *msg, void *arg)
5185{
5186 struct nlattr *tb[NL80211_ATTR_MAX + 1];
5187 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5188 u64 *cookie = arg;
5189 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5190 genlmsg_attrlen(gnlh, 0), NULL);
5191 if (tb[NL80211_ATTR_COOKIE])
5192 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
5193 return NL_SKIP;
5194}
5195
5196
9884f9cc
JB		 5197static int nl80211_send_frame_cmd(struct wpa_driver_nl80211_data *drv,
5198 unsigned int freq, const u8 *buf,
5199 size_t buf_len, u64 *cookie_out)
5200{
5201 struct nl_msg *msg;
5202 u64 cookie;
5203 int ret = -1;
5204
5205 msg = nlmsg_alloc();
5206 if (!msg)
5207 return -1;
5208
5209 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5210 NL80211_CMD_FRAME, 0);
5211
5212 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5213 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5214 NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
5215
5216 cookie = 0;
5217 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5218 msg = NULL;
5219 if (ret) {
5220 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
5221 "(%s)", ret, strerror(-ret));
5222 goto nla_put_failure;
5223 }
5224 wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted; "
5225 "cookie 0x%llx", (long long unsigned int) cookie);
5226
5227 if (cookie_out)
5228 *cookie_out = cookie;
5229
5230nla_put_failure:
5231 nlmsg_free(msg);
5232 return ret;
5233}
5234
5235
58f6fbe0
JM		 5236static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
5237 const u8 *dst, const u8 *src,
5238 const u8 *bssid,
5239 const u8 *data, size_t data_len)
5240{
a2e40bb6
FF		 5241 struct i802_bss *bss = priv;
5242 struct wpa_driver_nl80211_data *drv = bss->drv;
58f6fbe0 5243 int ret = -1;
58f6fbe0
JM		 5244 u8 *buf;
5245 struct ieee80211_hdr *hdr;
58f6fbe0
JM		 5246
5247 wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d)",
5248 drv->ifindex);
5249
5250 buf = os_zalloc(24 + data_len);
5251 if (buf == NULL)
5252 return ret;
5253 os_memcpy(buf + 24, data, data_len);
5254 hdr = (struct ieee80211_hdr *) buf;
5255 hdr->frame_control =
5256 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
5257 os_memcpy(hdr->addr1, dst, ETH_ALEN);
5258 os_memcpy(hdr->addr2, src, ETH_ALEN);
5259 os_memcpy(hdr->addr3, bssid, ETH_ALEN);
5260
9884f9cc 5261 if (drv->nlmode == NL80211_IFTYPE_AP)
58f6fbe0 5262 ret = wpa_driver_nl80211_send_mlme(priv, buf, 24 + data_len);
9884f9cc
JB		 5263 else
5264 ret = nl80211_send_frame_cmd(drv, freq, buf, 24 + data_len,
5265 &drv->send_action_cookie);
58f6fbe0 5266
f8bf1421 5267 os_free(buf);
58f6fbe0
JM		 5268 return ret;
5269}
5270
5271
55777702
JM		 5272static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
5273 unsigned int duration)
5274{
a2e40bb6
FF		 5275 struct i802_bss *bss = priv;
5276 struct wpa_driver_nl80211_data *drv = bss->drv;
55777702
JM		 5277 struct nl_msg *msg;
5278 int ret;
5279 u64 cookie;
5280
5281 msg = nlmsg_alloc();
5282 if (!msg)
5283 return -1;
5284
5285 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5286 NL80211_CMD_REMAIN_ON_CHANNEL, 0);
5287
5288 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5289 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5290 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5291
5292 cookie = 0;
5293 ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
5294 if (ret == 0) {
5295 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
5296 "0x%llx for freq=%u MHz duration=%u",
5297 (long long unsigned int) cookie, freq, duration);
5298 drv->remain_on_chan_cookie = cookie;
5299 return 0;
5300 }
5301 wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
15ed5535
JM		 5302 "(freq=%d duration=%u): %d (%s)",
5303 freq, duration, ret, strerror(-ret));
55777702
JM		 5304nla_put_failure:
5305 return -1;
5306}
5307
5308
5309static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
5310{
a2e40bb6
FF		 5311 struct i802_bss *bss = priv;
5312 struct wpa_driver_nl80211_data *drv = bss->drv;
55777702
JM		 5313 struct nl_msg *msg;
5314 int ret;
5315
5316 if (!drv->pending_remain_on_chan) {
5317 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
5318 "to cancel");
5319 return -1;
5320 }
5321
5322 wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
5323 "0x%llx",
5324 (long long unsigned int) drv->remain_on_chan_cookie);
5325
5326 msg = nlmsg_alloc();
5327 if (!msg)
5328 return -1;
5329
5330 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5331 NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
5332
5333 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5334 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
5335
5336 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5337 if (ret == 0)
5338 return 0;
5339 wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
5340 "%d (%s)", ret, strerror(-ret));
5341nla_put_failure:
5342 return -1;
5343}
5344
5345
504e905c
JM		 5346static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
5347 void *timeout_ctx)
5348{
5349 struct wpa_driver_nl80211_data *drv = eloop_ctx;
5350 if (drv->monitor_ifidx < 0)
5351 return; /* monitor interface already removed */
5352
5353 if (drv->nlmode != NL80211_IFTYPE_STATION)
5354 return; /* not in station mode anymore */
5355
5356 if (drv->probe_req_report)
5357 return; /* reporting enabled */
5358
5359 wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
5360 "Probe Request reporting needed anymore");
5361 nl80211_remove_monitor_interface(drv);
5362}
5363
5364
5365static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
5366{
a2e40bb6
FF		 5367 struct i802_bss *bss = priv;
5368 struct wpa_driver_nl80211_data *drv = bss->drv;
504e905c
JM		 5369
5370 if (drv->nlmode != NL80211_IFTYPE_STATION) {
5371 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
5372 "allowed in station mode (iftype=%d)",
5373 drv->nlmode);
5374 return -1;
5375 }
5376 drv->probe_req_report = report;
5377
5378 if (report) {
5379 eloop_cancel_timeout(
5380 wpa_driver_nl80211_probe_req_report_timeout,
5381 drv, NULL);
5382 if (drv->monitor_ifidx < 0 &&
5383 nl80211_create_monitor_interface(drv))
5384 return -1;
5385 } else {
5386 /*
5387 * It takes a while to remove the monitor interface, so try to
5388 * avoid doing this if it is needed again shortly. Instead,
5389 * schedule the interface to be removed later if no need for it
5390 * is seen.
5391 */
5392 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
5393 "to be removed after 10 seconds of no use");
5394 eloop_register_timeout(
5395 10, 0, wpa_driver_nl80211_probe_req_report_timeout,
5396 drv, NULL);
5397 }
5398
5399 return 0;
5400}
5401
5402
4e5cb1a3
JM		 5403static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
5404 int ifindex, int disabled)
5405{
5406 struct nl_msg *msg;
5407 struct nlattr *bands, *band;
5408 int ret;
5409
5410 msg = nlmsg_alloc();
5411 if (!msg)
5412 return -1;
5413
5414 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5415 NL80211_CMD_SET_TX_BITRATE_MASK, 0);
5416 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5417
5418 bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
5419 if (!bands)
5420 goto nla_put_failure;
5421
5422 /*
5423 * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
5424 * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
5425 * rates. All 5 GHz rates are left enabled.
5426 */
5427 band = nla_nest_start(msg, NL80211_BAND_2GHZ);
5428 if (!band)
5429 goto nla_put_failure;
5430 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
5431 "\x0c\x12\x18\x24\x30\x48\x60\x6c");
5432 nla_nest_end(msg, band);
5433
5434 nla_nest_end(msg, bands);
5435
5436 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5437 msg = NULL;
5438 if (ret) {
5439 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
5440 "(%s)", ret, strerror(-ret));
5441 }
5442
5443 return ret;
5444
5445nla_put_failure:
5446 nlmsg_free(msg);
5447 return -1;
5448}
5449
5450
5451static int wpa_driver_nl80211_disable_11b_rates(void *priv, int disabled)
5452{
a2e40bb6
FF		 5453 struct i802_bss *bss = priv;
5454 struct wpa_driver_nl80211_data *drv = bss->drv;
4e5cb1a3
JM		 5455 drv->disable_11b_rates = disabled;
5456 return nl80211_disable_11b_rates(drv, drv->ifindex, disabled);
5457}
5458
5459
af473088
JM		 5460static int wpa_driver_nl80211_deinit_ap(void *priv)
5461{
a2e40bb6
FF		 5462 struct i802_bss *bss = priv;
5463 struct wpa_driver_nl80211_data *drv = bss->drv;
af473088
JM		 5464 if (drv->nlmode != NL80211_IFTYPE_AP)
5465 return -1;
5466 wpa_driver_nl80211_del_beacon(drv);
a2e40bb6 5467 return wpa_driver_nl80211_set_mode(priv, IEEE80211_MODE_INFRA);
af473088
JM		 5468}
5469
5470
207ef3fb
JM		 5471static void wpa_driver_nl80211_resume(void *priv)
5472{
a2e40bb6
FF		 5473 struct i802_bss *bss = priv;
5474 struct wpa_driver_nl80211_data *drv = bss->drv;
5475 if (linux_set_iface_flags(drv->ioctl_sock, bss->ifname, 1)) {
207ef3fb
JM		 5476 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
5477 "resume event");
5478 }
5479}
5480
5481
7b90c16a
JM		 5482static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
5483 const u8 *ies, size_t ies_len)
5484{
5485 struct i802_bss *bss = priv;
5486 struct wpa_driver_nl80211_data *drv = bss->drv;
5487 int ret;
5488 u8 *data, *pos;
5489 size_t data_len;
5490 u8 own_addr[ETH_ALEN];
5491
5492 if (linux_get_ifhwaddr(drv->ioctl_sock, bss->ifname, own_addr) < 0)
5493 return -1;
5494
5495 if (action != 1) {
5496 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
5497 "action %d", action);
5498 return -1;
5499 }
5500
5501 /*
5502 * Action frame payload:
5503 * Category[1] = 6 (Fast BSS Transition)
5504 * Action[1] = 1 (Fast BSS Transition Request)
5505 * STA Address
5506 * Target AP Address
5507 * FT IEs
5508 */
5509
73fc617d
JM		 5510 data_len = 2 + 2 * ETH_ALEN + ies_len;
5511 data = os_malloc(data_len);
7b90c16a
JM		 5512 if (data == NULL)
5513 return -1;
5514 pos = data;
5515 *pos++ = 0x06; /* FT Action category */
5516 *pos++ = action;
5517 os_memcpy(pos, own_addr, ETH_ALEN);
5518 pos += ETH_ALEN;
5519 os_memcpy(pos, target_ap, ETH_ALEN);
5520 pos += ETH_ALEN;
5521 os_memcpy(pos, ies, ies_len);
5522
5523 ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, drv->bssid,
5524 own_addr, drv->bssid,
5525 data, data_len);
5526 os_free(data);
5527
5528 return ret;
5529}
5530
5531
b625473c
JM		 5532static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
5533{
5534 struct i802_bss *bss = priv;
5535 struct wpa_driver_nl80211_data *drv = bss->drv;
5536 struct nl_msg *msg, *cqm = NULL;
5537
5538 wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
5539 "hysteresis=%d", threshold, hysteresis);
5540
5541 msg = nlmsg_alloc();
5542 if (!msg)
5543 return -1;
5544
5545 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
5546 0, NL80211_CMD_SET_CQM, 0);
5547
5548 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
5549
5550 cqm = nlmsg_alloc();
5551 if (cqm == NULL)
5552 return -1;
5553
5554 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
5555 NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
5556 nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
5557
5558 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5559 return 0;
5560 msg = NULL;
5561
5562nla_put_failure:
5563 if (cqm)
5564 nlmsg_free(cqm);
5565 nlmsg_free(msg);
5566 return -1;
5567}
5568
5569
b91ab76e
JM		 5570static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
5571 int encrypt)
5572{
5573 struct i802_bss *bss = priv;
5574 struct wpa_driver_nl80211_data *drv = bss->drv;
5575 return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
5576}
5577
5578
6ee04cfc
JB		 5579static int nl80211_set_intra_bss(void *priv, int enabled)
5580{
5581 struct i802_bss *bss = priv;
5582 struct wpa_driver_nl80211_data *drv = bss->drv;
5583 struct nl_msg *msg;
5584
5585 msg = nlmsg_alloc();
5586 if (!msg)
5587 return -ENOMEM;
5588
5589 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
5590 NL80211_CMD_SET_BSS, 0);
5591
5592 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5593 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, !enabled);
5594
5595 return send_and_recv_msgs(drv, msg, NULL, NULL);
5596 nla_put_failure:
5597 return -ENOBUFS;
5598}
5599
5600
3f5285e8
JM		 5601const struct wpa_driver_ops wpa_driver_nl80211_ops = {
5602 .name = "nl80211",
5603 .desc = "Linux nl80211/cfg80211",
5604 .get_bssid = wpa_driver_nl80211_get_bssid,
5605 .get_ssid = wpa_driver_nl80211_get_ssid,
3f5285e8 5606 .set_key = wpa_driver_nl80211_set_key,
6a1063e0 5607 .scan2 = wpa_driver_nl80211_scan,
3f5285e8
JM		 5608 .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
5609 .deauthenticate = wpa_driver_nl80211_deauthenticate,
5610 .disassociate = wpa_driver_nl80211_disassociate,
c2a04078 5611 .authenticate = wpa_driver_nl80211_authenticate,
3f5285e8 5612 .associate = wpa_driver_nl80211_associate,
3f5285e8
JM		 5613 .init = wpa_driver_nl80211_init,
5614 .deinit = wpa_driver_nl80211_deinit,
3f5285e8
JM		 5615 .get_capa = wpa_driver_nl80211_get_capa,
5616 .set_operstate = wpa_driver_nl80211_set_operstate,
01652550 5617 .set_supp_port = wpa_driver_nl80211_set_supp_port,
6d158490 5618 .set_country = wpa_driver_nl80211_set_country,
d2440ba0 5619 .set_beacon = wpa_driver_nl80211_set_beacon,
22a7c9d7
JM		 5620 .if_add = wpa_driver_nl80211_if_add,
5621 .if_remove = wpa_driver_nl80211_if_remove,
071f8ac4 5622 .send_mlme = wpa_driver_nl80211_send_mlme,
c3965310 5623 .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
0f4e8b4f
JM		 5624 .sta_add = wpa_driver_nl80211_sta_add,
5625 .sta_remove = wpa_driver_nl80211_sta_remove,
db149ac9 5626 .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
a8d6ffa4 5627 .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
c5121837
JM		 5628#ifdef HOSTAPD
5629 .hapd_init = i802_init,
c5121837 5630 .hapd_deinit = i802_deinit,
c5121837
JM		 5631 .get_seqnum = i802_get_seqnum,
5632 .flush = i802_flush,
5633 .read_sta_data = i802_read_sta_data,
c5121837
JM		 5634 .sta_deauth = i802_sta_deauth,
5635 .sta_disassoc = i802_sta_disassoc,
c5121837
JM		 5636 .get_inact_sec = i802_get_inact_sec,
5637 .sta_clear_stats = i802_sta_clear_stats,
c5121837
JM		 5638 .set_rts = i802_set_rts,
5639 .set_frag = i802_set_frag,
c5121837 5640 .set_rate_sets = i802_set_rate_sets,
c5121837
JM		 5641 .set_cts_protect = i802_set_cts_protect,
5642 .set_preamble = i802_set_preamble,
5643 .set_short_slot_time = i802_set_short_slot_time,
5644 .set_tx_queue_params = i802_set_tx_queue_params,
c5121837 5645 .set_sta_vlan = i802_set_sta_vlan,
fbbfcbac 5646 .set_wds_sta = i802_set_wds_sta,
c5121837 5647#endif /* HOSTAPD */
e3802622 5648 .set_freq = i802_set_freq,
58f6fbe0 5649 .send_action = wpa_driver_nl80211_send_action,
55777702
JM		 5650 .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
5651 .cancel_remain_on_channel =
5652 wpa_driver_nl80211_cancel_remain_on_channel,
504e905c 5653 .probe_req_report = wpa_driver_nl80211_probe_req_report,
4e5cb1a3 5654 .disable_11b_rates = wpa_driver_nl80211_disable_11b_rates,
af473088 5655 .deinit_ap = wpa_driver_nl80211_deinit_ap,
207ef3fb 5656 .resume = wpa_driver_nl80211_resume,
7b90c16a 5657 .send_ft_action = nl80211_send_ft_action,
b625473c 5658 .signal_monitor = nl80211_signal_monitor,
b91ab76e 5659 .send_frame = nl80211_send_frame,
6ee04cfc 5660 .set_intra_bss = nl80211_set_intra_bss,
3f5285e8 5661};
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