1 /*
2 * Driver interaction with Linux nl80211/cfg80211 - Capabilities
3 * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
5 * Copyright (c) 2009-2010, Atheros Communications
6 *
7 * This software may be distributed under the terms of the BSD license.
8 * See README for more details.
9 */
10
11 #include "includes.h"
12 #include <netlink/genl/genl.h>
13
14 #include "utils/common.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/ieee802_11_common.h"
17 #include "common/qca-vendor.h"
18 #include "common/qca-vendor-attr.h"
19 #include "driver_nl80211.h"
20
21
protocol_feature_handler(struct nl_msg * msg,void * arg)22 static int protocol_feature_handler(struct nl_msg *msg, void *arg)
23 {
24 u32 *feat = arg;
25 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
26 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
27
28 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
29 genlmsg_attrlen(gnlh, 0), NULL);
30
31 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES])
32 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]);
33
34 return NL_SKIP;
35 }
36
37
get_nl80211_protocol_features(struct wpa_driver_nl80211_data * drv)38 static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv)
39 {
40 u32 feat = 0;
41 struct nl_msg *msg;
42
43 msg = nlmsg_alloc();
44 if (!msg)
45 return 0;
46
47 if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES)) {
48 nlmsg_free(msg);
49 return 0;
50 }
51
52 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0)
53 return feat;
54
55 return 0;
56 }
57
58
59 struct wiphy_info_data {
60 struct wpa_driver_nl80211_data *drv;
61 struct wpa_driver_capa *capa;
62
63 unsigned int num_multichan_concurrent;
64
65 unsigned int error:1;
66 unsigned int device_ap_sme:1;
67 unsigned int poll_command_supported:1;
68 unsigned int data_tx_status:1;
69 unsigned int monitor_supported:1;
70 unsigned int auth_supported:1;
71 unsigned int connect_supported:1;
72 unsigned int p2p_go_supported:1;
73 unsigned int p2p_client_supported:1;
74 unsigned int p2p_go_ctwindow_supported:1;
75 unsigned int p2p_concurrent:1;
76 unsigned int channel_switch_supported:1;
77 unsigned int set_qos_map_supported:1;
78 unsigned int have_low_prio_scan:1;
79 unsigned int wmm_ac_supported:1;
80 unsigned int mac_addr_rand_scan_supported:1;
81 unsigned int mac_addr_rand_sched_scan_supported:1;
82 };
83
84
probe_resp_offload_support(int supp_protocols)85 static unsigned int probe_resp_offload_support(int supp_protocols)
86 {
87 unsigned int prot = 0;
88
89 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
90 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
91 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
92 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
93 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
94 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
95 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
96 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
97
98 return prot;
99 }
100
101
wiphy_info_supported_iftypes(struct wiphy_info_data * info,struct nlattr * tb)102 static void wiphy_info_supported_iftypes(struct wiphy_info_data *info,
103 struct nlattr *tb)
104 {
105 struct nlattr *nl_mode;
106 int i;
107
108 if (tb == NULL)
109 return;
110
111 nla_for_each_nested(nl_mode, tb, i) {
112 switch (nla_type(nl_mode)) {
113 case NL80211_IFTYPE_AP:
114 info->capa->flags |= WPA_DRIVER_FLAGS_AP;
115 break;
116 case NL80211_IFTYPE_MESH_POINT:
117 info->capa->flags |= WPA_DRIVER_FLAGS_MESH;
118 break;
119 case NL80211_IFTYPE_ADHOC:
120 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS;
121 break;
122 case NL80211_IFTYPE_P2P_DEVICE:
123 info->capa->flags |=
124 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE;
125 break;
126 case NL80211_IFTYPE_P2P_GO:
127 info->p2p_go_supported = 1;
128 break;
129 case NL80211_IFTYPE_P2P_CLIENT:
130 info->p2p_client_supported = 1;
131 break;
132 case NL80211_IFTYPE_MONITOR:
133 info->monitor_supported = 1;
134 break;
135 }
136 }
137 }
138
139
wiphy_info_iface_comb_process(struct wiphy_info_data * info,struct nlattr * nl_combi)140 static int wiphy_info_iface_comb_process(struct wiphy_info_data *info,
141 struct nlattr *nl_combi)
142 {
143 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
144 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
145 struct nlattr *nl_limit, *nl_mode;
146 int err, rem_limit, rem_mode;
147 int combination_has_p2p = 0, combination_has_mgd = 0;
148 static struct nla_policy
149 iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
150 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
151 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
152 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
153 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
154 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 },
155 },
156 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
157 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
158 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
159 };
160
161 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
162 nl_combi, iface_combination_policy);
163 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
164 !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
165 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
166 return 0; /* broken combination */
167
168 if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS])
169 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR;
170
171 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS],
172 rem_limit) {
173 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT,
174 nl_limit, iface_limit_policy);
175 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES])
176 return 0; /* broken combination */
177
178 nla_for_each_nested(nl_mode,
179 tb_limit[NL80211_IFACE_LIMIT_TYPES],
180 rem_mode) {
181 int ift = nla_type(nl_mode);
182 if (ift == NL80211_IFTYPE_P2P_GO ||
183 ift == NL80211_IFTYPE_P2P_CLIENT)
184 combination_has_p2p = 1;
185 if (ift == NL80211_IFTYPE_STATION)
186 combination_has_mgd = 1;
187 }
188 if (combination_has_p2p && combination_has_mgd)
189 break;
190 }
191
192 if (combination_has_p2p && combination_has_mgd) {
193 unsigned int num_channels =
194 nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]);
195
196 info->p2p_concurrent = 1;
197 if (info->num_multichan_concurrent < num_channels)
198 info->num_multichan_concurrent = num_channels;
199 }
200
201 return 0;
202 }
203
204
wiphy_info_iface_comb(struct wiphy_info_data * info,struct nlattr * tb)205 static void wiphy_info_iface_comb(struct wiphy_info_data *info,
206 struct nlattr *tb)
207 {
208 struct nlattr *nl_combi;
209 int rem_combi;
210
211 if (tb == NULL)
212 return;
213
214 nla_for_each_nested(nl_combi, tb, rem_combi) {
215 if (wiphy_info_iface_comb_process(info, nl_combi) > 0)
216 break;
217 }
218 }
219
220
wiphy_info_supp_cmds(struct wiphy_info_data * info,struct nlattr * tb)221 static void wiphy_info_supp_cmds(struct wiphy_info_data *info,
222 struct nlattr *tb)
223 {
224 struct nlattr *nl_cmd;
225 int i;
226
227 if (tb == NULL)
228 return;
229
230 nla_for_each_nested(nl_cmd, tb, i) {
231 switch (nla_get_u32(nl_cmd)) {
232 case NL80211_CMD_AUTHENTICATE:
233 info->auth_supported = 1;
234 break;
235 case NL80211_CMD_CONNECT:
236 info->connect_supported = 1;
237 break;
238 case NL80211_CMD_START_SCHED_SCAN:
239 info->capa->sched_scan_supported = 1;
240 break;
241 case NL80211_CMD_PROBE_CLIENT:
242 info->poll_command_supported = 1;
243 break;
244 case NL80211_CMD_CHANNEL_SWITCH:
245 info->channel_switch_supported = 1;
246 break;
247 case NL80211_CMD_SET_QOS_MAP:
248 info->set_qos_map_supported = 1;
249 break;
250 }
251 }
252 }
253
254
wiphy_info_cipher_suites(struct wiphy_info_data * info,struct nlattr * tb)255 static void wiphy_info_cipher_suites(struct wiphy_info_data *info,
256 struct nlattr *tb)
257 {
258 int i, num;
259 u32 *ciphers;
260
261 if (tb == NULL)
262 return;
263
264 num = nla_len(tb) / sizeof(u32);
265 ciphers = nla_data(tb);
266 for (i = 0; i < num; i++) {
267 u32 c = ciphers[i];
268
269 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d",
270 c >> 24, (c >> 16) & 0xff,
271 (c >> 8) & 0xff, c & 0xff);
272 switch (c) {
273 case WLAN_CIPHER_SUITE_CCMP_256:
274 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256;
275 break;
276 case WLAN_CIPHER_SUITE_GCMP_256:
277 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256;
278 break;
279 case WLAN_CIPHER_SUITE_CCMP:
280 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP;
281 break;
282 case WLAN_CIPHER_SUITE_GCMP:
283 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP;
284 break;
285 case WLAN_CIPHER_SUITE_TKIP:
286 info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP;
287 break;
288 case WLAN_CIPHER_SUITE_WEP104:
289 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104;
290 break;
291 case WLAN_CIPHER_SUITE_WEP40:
292 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40;
293 break;
294 case WLAN_CIPHER_SUITE_AES_CMAC:
295 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP;
296 break;
297 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
298 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128;
299 break;
300 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
301 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256;
302 break;
303 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
304 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256;
305 break;
306 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR:
307 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED;
308 break;
309 }
310 }
311 }
312
313
wiphy_info_max_roc(struct wpa_driver_capa * capa,struct nlattr * tb)314 static void wiphy_info_max_roc(struct wpa_driver_capa *capa,
315 struct nlattr *tb)
316 {
317 if (tb)
318 capa->max_remain_on_chan = nla_get_u32(tb);
319 }
320
321
wiphy_info_tdls(struct wpa_driver_capa * capa,struct nlattr * tdls,struct nlattr * ext_setup)322 static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls,
323 struct nlattr *ext_setup)
324 {
325 if (tdls == NULL)
326 return;
327
328 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
329 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
330
331 if (ext_setup) {
332 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
333 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
334 }
335 }
336
337
ext_feature_isset(const u8 * ext_features,int ext_features_len,enum nl80211_ext_feature_index ftidx)338 static int ext_feature_isset(const u8 *ext_features, int ext_features_len,
339 enum nl80211_ext_feature_index ftidx)
340 {
341 u8 ft_byte;
342
343 if ((int) ftidx / 8 >= ext_features_len)
344 return 0;
345
346 ft_byte = ext_features[ftidx / 8];
347 return (ft_byte & BIT(ftidx % 8)) != 0;
348 }
349
350
wiphy_info_ext_feature_flags(struct wiphy_info_data * info,struct nlattr * tb)351 static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info,
352 struct nlattr *tb)
353 {
354 struct wpa_driver_capa *capa = info->capa;
355
356 if (tb == NULL)
357 return;
358
359 if (ext_feature_isset(nla_data(tb), nla_len(tb),
360 NL80211_EXT_FEATURE_VHT_IBSS))
361 capa->flags |= WPA_DRIVER_FLAGS_VHT_IBSS;
362 }
363
364
wiphy_info_feature_flags(struct wiphy_info_data * info,struct nlattr * tb)365 static void wiphy_info_feature_flags(struct wiphy_info_data *info,
366 struct nlattr *tb)
367 {
368 u32 flags;
369 struct wpa_driver_capa *capa = info->capa;
370
371 if (tb == NULL)
372 return;
373
374 flags = nla_get_u32(tb);
375
376 if (flags & NL80211_FEATURE_SK_TX_STATUS)
377 info->data_tx_status = 1;
378
379 if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
380 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
381
382 if (flags & NL80211_FEATURE_SAE)
383 capa->flags |= WPA_DRIVER_FLAGS_SAE;
384
385 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN)
386 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN;
387
388 if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)
389 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX;
390
391 if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) {
392 wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch");
393 capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH;
394 }
395
396 if (flags & NL80211_FEATURE_P2P_GO_CTWIN)
397 info->p2p_go_ctwindow_supported = 1;
398
399 if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN)
400 info->have_low_prio_scan = 1;
401
402 if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)
403 info->mac_addr_rand_scan_supported = 1;
404
405 if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR)
406 info->mac_addr_rand_sched_scan_supported = 1;
407
408 if (flags & NL80211_FEATURE_STATIC_SMPS)
409 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC;
410
411 if (flags & NL80211_FEATURE_DYNAMIC_SMPS)
412 capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC;
413
414 if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
415 info->wmm_ac_supported = 1;
416
417 if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES)
418 capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES;
419
420 if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES)
421 capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES;
422
423 if (flags & NL80211_FEATURE_QUIET)
424 capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET;
425
426 if (flags & NL80211_FEATURE_TX_POWER_INSERTION)
427 capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION;
428
429 if (flags & NL80211_FEATURE_HT_IBSS)
430 capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS;
431 }
432
433
wiphy_info_probe_resp_offload(struct wpa_driver_capa * capa,struct nlattr * tb)434 static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa,
435 struct nlattr *tb)
436 {
437 u32 protocols;
438
439 if (tb == NULL)
440 return;
441
442 protocols = nla_get_u32(tb);
443 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP "
444 "mode");
445 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
446 capa->probe_resp_offloads = probe_resp_offload_support(protocols);
447 }
448
449
wiphy_info_wowlan_triggers(struct wpa_driver_capa * capa,struct nlattr * tb)450 static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa,
451 struct nlattr *tb)
452 {
453 struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1];
454
455 if (tb == NULL)
456 return;
457
458 if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG,
459 tb, NULL))
460 return;
461
462 if (triggers[NL80211_WOWLAN_TRIG_ANY])
463 capa->wowlan_triggers.any = 1;
464 if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT])
465 capa->wowlan_triggers.disconnect = 1;
466 if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT])
467 capa->wowlan_triggers.magic_pkt = 1;
468 if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE])
469 capa->wowlan_triggers.gtk_rekey_failure = 1;
470 if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST])
471 capa->wowlan_triggers.eap_identity_req = 1;
472 if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE])
473 capa->wowlan_triggers.four_way_handshake = 1;
474 if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE])
475 capa->wowlan_triggers.rfkill_release = 1;
476 }
477
478
wiphy_info_handler(struct nl_msg * msg,void * arg)479 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
480 {
481 struct nlattr *tb[NL80211_ATTR_MAX + 1];
482 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
483 struct wiphy_info_data *info = arg;
484 struct wpa_driver_capa *capa = info->capa;
485 struct wpa_driver_nl80211_data *drv = info->drv;
486
487 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
488 genlmsg_attrlen(gnlh, 0), NULL);
489
490 if (tb[NL80211_ATTR_WIPHY_NAME])
491 os_strlcpy(drv->phyname,
492 nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]),
493 sizeof(drv->phyname));
494 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
495 capa->max_scan_ssids =
496 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
497
498 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
499 capa->max_sched_scan_ssids =
500 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
501
502 if (tb[NL80211_ATTR_MAX_MATCH_SETS])
503 capa->max_match_sets =
504 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
505
506 if (tb[NL80211_ATTR_MAC_ACL_MAX])
507 capa->max_acl_mac_addrs =
508 nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
509
510 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
511 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);
512 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]);
513 wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]);
514
515 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
516 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
517 "off-channel TX");
518 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
519 }
520
521 if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
522 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
523 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
524 }
525
526 wiphy_info_max_roc(capa,
527 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
528
529 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
530 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
531
532 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT],
533 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]);
534
535 if (tb[NL80211_ATTR_DEVICE_AP_SME])
536 info->device_ap_sme = 1;
537
538 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]);
539 wiphy_info_ext_feature_flags(info, tb[NL80211_ATTR_EXT_FEATURES]);
540 wiphy_info_probe_resp_offload(capa,
541 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
542
543 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] &&
544 drv->extended_capa == NULL) {
545 drv->extended_capa =
546 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA]));
547 if (drv->extended_capa) {
548 os_memcpy(drv->extended_capa,
549 nla_data(tb[NL80211_ATTR_EXT_CAPA]),
550 nla_len(tb[NL80211_ATTR_EXT_CAPA]));
551 drv->extended_capa_len =
552 nla_len(tb[NL80211_ATTR_EXT_CAPA]);
553 }
554 drv->extended_capa_mask =
555 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK]));
556 if (drv->extended_capa_mask) {
557 os_memcpy(drv->extended_capa_mask,
558 nla_data(tb[NL80211_ATTR_EXT_CAPA_MASK]),
559 nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK]));
560 } else {
561 os_free(drv->extended_capa);
562 drv->extended_capa = NULL;
563 drv->extended_capa_len = 0;
564 }
565 }
566
567 if (tb[NL80211_ATTR_VENDOR_DATA]) {
568 struct nlattr *nl;
569 int rem;
570
571 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) {
572 struct nl80211_vendor_cmd_info *vinfo;
573 if (nla_len(nl) != sizeof(*vinfo)) {
574 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
575 continue;
576 }
577 vinfo = nla_data(nl);
578 if (vinfo->vendor_id == OUI_QCA) {
579 switch (vinfo->subcmd) {
580 case QCA_NL80211_VENDOR_SUBCMD_TEST:
581 drv->vendor_cmd_test_avail = 1;
582 break;
583 case QCA_NL80211_VENDOR_SUBCMD_ROAMING:
584 drv->roaming_vendor_cmd_avail = 1;
585 break;
586 case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY:
587 drv->dfs_vendor_cmd_avail = 1;
588 break;
589 case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES:
590 drv->get_features_vendor_cmd_avail = 1;
591 break;
592 case QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST:
593 drv->get_pref_freq_list = 1;
594 break;
595 case QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL:
596 drv->set_prob_oper_freq = 1;
597 break;
598 case QCA_NL80211_VENDOR_SUBCMD_DO_ACS:
599 drv->capa.flags |=
600 WPA_DRIVER_FLAGS_ACS_OFFLOAD;
601 break;
602 case QCA_NL80211_VENDOR_SUBCMD_SETBAND:
603 drv->setband_vendor_cmd_avail = 1;
604 break;
605 }
606 }
607
608 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
609 vinfo->vendor_id, vinfo->subcmd);
610 }
611 }
612
613 if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
614 struct nlattr *nl;
615 int rem;
616
617 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
618 struct nl80211_vendor_cmd_info *vinfo;
619 if (nla_len(nl) != sizeof(*vinfo)) {
620 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
621 continue;
622 }
623 vinfo = nla_data(nl);
624 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
625 vinfo->vendor_id, vinfo->subcmd);
626 }
627 }
628
629 wiphy_info_wowlan_triggers(capa,
630 tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
631
632 if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
633 capa->max_stations =
634 nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
635
636 return NL_SKIP;
637 }
638
639
wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data * drv,struct wiphy_info_data * info)640 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
641 struct wiphy_info_data *info)
642 {
643 u32 feat;
644 struct nl_msg *msg;
645 int flags = 0;
646
647 os_memset(info, 0, sizeof(*info));
648 info->capa = &drv->capa;
649 info->drv = drv;
650
651 feat = get_nl80211_protocol_features(drv);
652 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
653 flags = NLM_F_DUMP;
654 msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
655 if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
656 nlmsg_free(msg);
657 return -1;
658 }
659
660 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
661 return -1;
662
663 if (info->auth_supported)
664 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
665 else if (!info->connect_supported) {
666 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
667 "authentication/association or connect commands");
668 info->error = 1;
669 }
670
671 if (info->p2p_go_supported && info->p2p_client_supported)
672 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
673 if (info->p2p_concurrent) {
674 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
675 "interface (driver advertised support)");
676 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
677 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
678 }
679 if (info->num_multichan_concurrent > 1) {
680 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
681 "concurrent (driver advertised support)");
682 drv->capa.num_multichan_concurrent =
683 info->num_multichan_concurrent;
684 }
685 if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
686 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
687
688 /* default to 5000 since early versions of mac80211 don't set it */
689 if (!drv->capa.max_remain_on_chan)
690 drv->capa.max_remain_on_chan = 5000;
691
692 if (info->channel_switch_supported)
693 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
694 drv->capa.wmm_ac_supported = info->wmm_ac_supported;
695
696 drv->capa.mac_addr_rand_sched_scan_supported =
697 info->mac_addr_rand_sched_scan_supported;
698 drv->capa.mac_addr_rand_scan_supported =
699 info->mac_addr_rand_scan_supported;
700
701 return 0;
702 }
703
704
dfs_info_handler(struct nl_msg * msg,void * arg)705 static int dfs_info_handler(struct nl_msg *msg, void *arg)
706 {
707 struct nlattr *tb[NL80211_ATTR_MAX + 1];
708 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
709 int *dfs_capability_ptr = arg;
710
711 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
712 genlmsg_attrlen(gnlh, 0), NULL);
713
714 if (tb[NL80211_ATTR_VENDOR_DATA]) {
715 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
716 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
717
718 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
719 nla_data(nl_vend), nla_len(nl_vend), NULL);
720
721 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
722 u32 val;
723 val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
724 wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
725 val);
726 *dfs_capability_ptr = val;
727 }
728 }
729
730 return NL_SKIP;
731 }
732
733
qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data * drv)734 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
735 {
736 struct nl_msg *msg;
737 int dfs_capability = 0;
738 int ret;
739
740 if (!drv->dfs_vendor_cmd_avail)
741 return;
742
743 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
744 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
745 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
746 QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
747 nlmsg_free(msg);
748 return;
749 }
750
751 ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
752 if (!ret && dfs_capability)
753 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
754 }
755
756
757 struct features_info {
758 u8 *flags;
759 size_t flags_len;
760 struct wpa_driver_capa *capa;
761 };
762
763
features_info_handler(struct nl_msg * msg,void * arg)764 static int features_info_handler(struct nl_msg *msg, void *arg)
765 {
766 struct nlattr *tb[NL80211_ATTR_MAX + 1];
767 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
768 struct features_info *info = arg;
769 struct nlattr *nl_vend, *attr;
770
771 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
772 genlmsg_attrlen(gnlh, 0), NULL);
773
774 nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
775 if (nl_vend) {
776 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
777
778 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
779 nla_data(nl_vend), nla_len(nl_vend), NULL);
780
781 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS];
782 if (attr) {
783 info->flags = nla_data(attr);
784 info->flags_len = nla_len(attr);
785 }
786 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_CONCURRENCY_CAPA];
787 if (attr)
788 info->capa->conc_capab = nla_get_u32(attr);
789
790 attr = tb_vendor[
791 QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_2_4_BAND];
792 if (attr)
793 info->capa->max_conc_chan_2_4 = nla_get_u32(attr);
794
795 attr = tb_vendor[
796 QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_5_0_BAND];
797 if (attr)
798 info->capa->max_conc_chan_5_0 = nla_get_u32(attr);
799 }
800
801 return NL_SKIP;
802 }
803
804
check_feature(enum qca_wlan_vendor_features feature,struct features_info * info)805 static int check_feature(enum qca_wlan_vendor_features feature,
806 struct features_info *info)
807 {
808 size_t idx = feature / 8;
809
810 return (idx < info->flags_len) &&
811 (info->flags[idx] & BIT(feature % 8));
812 }
813
814
qca_nl80211_get_features(struct wpa_driver_nl80211_data * drv)815 static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv)
816 {
817 struct nl_msg *msg;
818 struct features_info info;
819 int ret;
820
821 if (!drv->get_features_vendor_cmd_avail)
822 return;
823
824 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
825 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
826 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
827 QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) {
828 nlmsg_free(msg);
829 return;
830 }
831
832 os_memset(&info, 0, sizeof(info));
833 info.capa = &drv->capa;
834 ret = send_and_recv_msgs(drv, msg, features_info_handler, &info);
835 if (ret || !info.flags)
836 return;
837
838 if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info))
839 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD;
840
841 if (check_feature(QCA_WLAN_VENDOR_FEATURE_SUPPORT_HW_MODE_ANY, &info))
842 drv->capa.flags |= WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY;
843 }
844
845
wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data * drv)846 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
847 {
848 struct wiphy_info_data info;
849 if (wpa_driver_nl80211_get_info(drv, &info))
850 return -1;
851
852 if (info.error)
853 return -1;
854
855 drv->has_capability = 1;
856 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
857 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
858 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
859 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK |
860 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B |
861 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192;
862 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
863 WPA_DRIVER_AUTH_SHARED |
864 WPA_DRIVER_AUTH_LEAP;
865
866 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
867 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
868 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
869
870 /*
871 * As all cfg80211 drivers must support cases where the AP interface is
872 * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
873 * case that the user space daemon has crashed, they must be able to
874 * cleanup all stations and key entries in the AP tear down flow. Thus,
875 * this flag can/should always be set for cfg80211 drivers.
876 */
877 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
878
879 if (!info.device_ap_sme) {
880 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
881
882 /*
883 * No AP SME is currently assumed to also indicate no AP MLME
884 * in the driver/firmware.
885 */
886 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
887 }
888
889 drv->device_ap_sme = info.device_ap_sme;
890 drv->poll_command_supported = info.poll_command_supported;
891 drv->data_tx_status = info.data_tx_status;
892 drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported;
893 if (info.set_qos_map_supported)
894 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
895 drv->have_low_prio_scan = info.have_low_prio_scan;
896
897 /*
898 * If poll command and tx status are supported, mac80211 is new enough
899 * to have everything we need to not need monitor interfaces.
900 */
901 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
902
903 if (drv->device_ap_sme && drv->use_monitor) {
904 /*
905 * Non-mac80211 drivers may not support monitor interface.
906 * Make sure we do not get stuck with incorrect capability here
907 * by explicitly testing this.
908 */
909 if (!info.monitor_supported) {
910 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
911 "with device_ap_sme since no monitor mode "
912 "support detected");
913 drv->use_monitor = 0;
914 }
915 }
916
917 /*
918 * If we aren't going to use monitor interfaces, but the
919 * driver doesn't support data TX status, we won't get TX
920 * status for EAPOL frames.
921 */
922 if (!drv->use_monitor && !info.data_tx_status)
923 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
924
925 qca_nl80211_check_dfs_capa(drv);
926 qca_nl80211_get_features(drv);
927
928 return 0;
929 }
930
931
932 struct phy_info_arg {
933 u16 *num_modes;
934 struct hostapd_hw_modes *modes;
935 int last_mode, last_chan_idx;
936 };
937
phy_info_ht_capa(struct hostapd_hw_modes * mode,struct nlattr * capa,struct nlattr * ampdu_factor,struct nlattr * ampdu_density,struct nlattr * mcs_set)938 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
939 struct nlattr *ampdu_factor,
940 struct nlattr *ampdu_density,
941 struct nlattr *mcs_set)
942 {
943 if (capa)
944 mode->ht_capab = nla_get_u16(capa);
945
946 if (ampdu_factor)
947 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
948
949 if (ampdu_density)
950 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
951
952 if (mcs_set && nla_len(mcs_set) >= 16) {
953 u8 *mcs;
954 mcs = nla_data(mcs_set);
955 os_memcpy(mode->mcs_set, mcs, 16);
956 }
957 }
958
959
phy_info_vht_capa(struct hostapd_hw_modes * mode,struct nlattr * capa,struct nlattr * mcs_set)960 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
961 struct nlattr *capa,
962 struct nlattr *mcs_set)
963 {
964 if (capa)
965 mode->vht_capab = nla_get_u32(capa);
966
967 if (mcs_set && nla_len(mcs_set) >= 8) {
968 u8 *mcs;
969 mcs = nla_data(mcs_set);
970 os_memcpy(mode->vht_mcs_set, mcs, 8);
971 }
972 }
973
974
phy_info_freq(struct hostapd_hw_modes * mode,struct hostapd_channel_data * chan,struct nlattr * tb_freq[])975 static void phy_info_freq(struct hostapd_hw_modes *mode,
976 struct hostapd_channel_data *chan,
977 struct nlattr *tb_freq[])
978 {
979 u8 channel;
980 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
981 chan->flag = 0;
982 chan->dfs_cac_ms = 0;
983 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
984 chan->chan = channel;
985
986 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
987 chan->flag |= HOSTAPD_CHAN_DISABLED;
988 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
989 chan->flag |= HOSTAPD_CHAN_NO_IR;
990 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
991 chan->flag |= HOSTAPD_CHAN_RADAR;
992 if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
993 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
994 if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
995 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
996
997 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
998 enum nl80211_dfs_state state =
999 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
1000
1001 switch (state) {
1002 case NL80211_DFS_USABLE:
1003 chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
1004 break;
1005 case NL80211_DFS_AVAILABLE:
1006 chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
1007 break;
1008 case NL80211_DFS_UNAVAILABLE:
1009 chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
1010 break;
1011 }
1012 }
1013
1014 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
1015 chan->dfs_cac_ms = nla_get_u32(
1016 tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
1017 }
1018 }
1019
1020
phy_info_freqs(struct phy_info_arg * phy_info,struct hostapd_hw_modes * mode,struct nlattr * tb)1021 static int phy_info_freqs(struct phy_info_arg *phy_info,
1022 struct hostapd_hw_modes *mode, struct nlattr *tb)
1023 {
1024 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1025 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1026 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1027 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
1028 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1029 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1030 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
1031 };
1032 int new_channels = 0;
1033 struct hostapd_channel_data *channel;
1034 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1035 struct nlattr *nl_freq;
1036 int rem_freq, idx;
1037
1038 if (tb == NULL)
1039 return NL_OK;
1040
1041 nla_for_each_nested(nl_freq, tb, rem_freq) {
1042 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
1043 nla_data(nl_freq), nla_len(nl_freq), freq_policy);
1044 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1045 continue;
1046 new_channels++;
1047 }
1048
1049 channel = os_realloc_array(mode->channels,
1050 mode->num_channels + new_channels,
1051 sizeof(struct hostapd_channel_data));
1052 if (!channel)
1053 return NL_SKIP;
1054
1055 mode->channels = channel;
1056 mode->num_channels += new_channels;
1057
1058 idx = phy_info->last_chan_idx;
1059
1060 nla_for_each_nested(nl_freq, tb, rem_freq) {
1061 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
1062 nla_data(nl_freq), nla_len(nl_freq), freq_policy);
1063 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1064 continue;
1065 phy_info_freq(mode, &mode->channels[idx], tb_freq);
1066 idx++;
1067 }
1068 phy_info->last_chan_idx = idx;
1069
1070 return NL_OK;
1071 }
1072
1073
phy_info_rates(struct hostapd_hw_modes * mode,struct nlattr * tb)1074 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
1075 {
1076 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1077 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1078 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
1079 { .type = NLA_FLAG },
1080 };
1081 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1082 struct nlattr *nl_rate;
1083 int rem_rate, idx;
1084
1085 if (tb == NULL)
1086 return NL_OK;
1087
1088 nla_for_each_nested(nl_rate, tb, rem_rate) {
1089 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1090 nla_data(nl_rate), nla_len(nl_rate),
1091 rate_policy);
1092 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1093 continue;
1094 mode->num_rates++;
1095 }
1096
1097 mode->rates = os_calloc(mode->num_rates, sizeof(int));
1098 if (!mode->rates)
1099 return NL_SKIP;
1100
1101 idx = 0;
1102
1103 nla_for_each_nested(nl_rate, tb, rem_rate) {
1104 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1105 nla_data(nl_rate), nla_len(nl_rate),
1106 rate_policy);
1107 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1108 continue;
1109 mode->rates[idx] = nla_get_u32(
1110 tb_rate[NL80211_BITRATE_ATTR_RATE]);
1111 idx++;
1112 }
1113
1114 return NL_OK;
1115 }
1116
1117
phy_info_band(struct phy_info_arg * phy_info,struct nlattr * nl_band)1118 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
1119 {
1120 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1121 struct hostapd_hw_modes *mode;
1122 int ret;
1123
1124 if (phy_info->last_mode != nl_band->nla_type) {
1125 mode = os_realloc_array(phy_info->modes,
1126 *phy_info->num_modes + 1,
1127 sizeof(*mode));
1128 if (!mode)
1129 return NL_SKIP;
1130 phy_info->modes = mode;
1131
1132 mode = &phy_info->modes[*(phy_info->num_modes)];
1133 os_memset(mode, 0, sizeof(*mode));
1134 mode->mode = NUM_HOSTAPD_MODES;
1135 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
1136 HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
1137
1138 /*
1139 * Unsupported VHT MCS stream is defined as value 3, so the VHT
1140 * MCS RX/TX map must be initialized with 0xffff to mark all 8
1141 * possible streams as unsupported. This will be overridden if
1142 * driver advertises VHT support.
1143 */
1144 mode->vht_mcs_set[0] = 0xff;
1145 mode->vht_mcs_set[1] = 0xff;
1146 mode->vht_mcs_set[4] = 0xff;
1147 mode->vht_mcs_set[5] = 0xff;
1148
1149 *(phy_info->num_modes) += 1;
1150 phy_info->last_mode = nl_band->nla_type;
1151 phy_info->last_chan_idx = 0;
1152 } else
1153 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
1154
1155 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1156 nla_len(nl_band), NULL);
1157
1158 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1159 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1160 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1161 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1162 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1163 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1164 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1165 if (ret != NL_OK)
1166 return ret;
1167 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1168 if (ret != NL_OK)
1169 return ret;
1170
1171 return NL_OK;
1172 }
1173
1174
phy_info_handler(struct nl_msg * msg,void * arg)1175 static int phy_info_handler(struct nl_msg *msg, void *arg)
1176 {
1177 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1178 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1179 struct phy_info_arg *phy_info = arg;
1180 struct nlattr *nl_band;
1181 int rem_band;
1182
1183 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1184 genlmsg_attrlen(gnlh, 0), NULL);
1185
1186 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1187 return NL_SKIP;
1188
1189 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1190 {
1191 int res = phy_info_band(phy_info, nl_band);
1192 if (res != NL_OK)
1193 return res;
1194 }
1195
1196 return NL_SKIP;
1197 }
1198
1199
1200 static struct hostapd_hw_modes *
wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes * modes,u16 * num_modes)1201 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1202 u16 *num_modes)
1203 {
1204 u16 m;
1205 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1206 int i, mode11g_idx = -1;
1207
1208 /* heuristic to set up modes */
1209 for (m = 0; m < *num_modes; m++) {
1210 if (!modes[m].num_channels)
1211 continue;
1212 if (modes[m].channels[0].freq < 4000) {
1213 modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1214 for (i = 0; i < modes[m].num_rates; i++) {
1215 if (modes[m].rates[i] > 200) {
1216 modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1217 break;
1218 }
1219 }
1220 } else if (modes[m].channels[0].freq > 50000)
1221 modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1222 else
1223 modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1224 }
1225
1226 /* If only 802.11g mode is included, use it to construct matching
1227 * 802.11b mode data. */
1228
1229 for (m = 0; m < *num_modes; m++) {
1230 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1231 return modes; /* 802.11b already included */
1232 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1233 mode11g_idx = m;
1234 }
1235
1236 if (mode11g_idx < 0)
1237 return modes; /* 2.4 GHz band not supported at all */
1238
1239 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1240 if (nmodes == NULL)
1241 return modes; /* Could not add 802.11b mode */
1242
1243 mode = &nmodes[*num_modes];
1244 os_memset(mode, 0, sizeof(*mode));
1245 (*num_modes)++;
1246 modes = nmodes;
1247
1248 mode->mode = HOSTAPD_MODE_IEEE80211B;
1249
1250 mode11g = &modes[mode11g_idx];
1251 mode->num_channels = mode11g->num_channels;
1252 mode->channels = os_malloc(mode11g->num_channels *
1253 sizeof(struct hostapd_channel_data));
1254 if (mode->channels == NULL) {
1255 (*num_modes)--;
1256 return modes; /* Could not add 802.11b mode */
1257 }
1258 os_memcpy(mode->channels, mode11g->channels,
1259 mode11g->num_channels * sizeof(struct hostapd_channel_data));
1260
1261 mode->num_rates = 0;
1262 mode->rates = os_malloc(4 * sizeof(int));
1263 if (mode->rates == NULL) {
1264 os_free(mode->channels);
1265 (*num_modes)--;
1266 return modes; /* Could not add 802.11b mode */
1267 }
1268
1269 for (i = 0; i < mode11g->num_rates; i++) {
1270 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1271 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1272 continue;
1273 mode->rates[mode->num_rates] = mode11g->rates[i];
1274 mode->num_rates++;
1275 if (mode->num_rates == 4)
1276 break;
1277 }
1278
1279 if (mode->num_rates == 0) {
1280 os_free(mode->channels);
1281 os_free(mode->rates);
1282 (*num_modes)--;
1283 return modes; /* No 802.11b rates */
1284 }
1285
1286 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1287 "information");
1288
1289 return modes;
1290 }
1291
1292
nl80211_set_ht40_mode(struct hostapd_hw_modes * mode,int start,int end)1293 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1294 int end)
1295 {
1296 int c;
1297
1298 for (c = 0; c < mode->num_channels; c++) {
1299 struct hostapd_channel_data *chan = &mode->channels[c];
1300 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1301 chan->flag |= HOSTAPD_CHAN_HT40;
1302 }
1303 }
1304
1305
nl80211_set_ht40_mode_sec(struct hostapd_hw_modes * mode,int start,int end)1306 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1307 int end)
1308 {
1309 int c;
1310
1311 for (c = 0; c < mode->num_channels; c++) {
1312 struct hostapd_channel_data *chan = &mode->channels[c];
1313 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1314 continue;
1315 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1316 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1317 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1318 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1319 }
1320 }
1321
1322
nl80211_reg_rule_max_eirp(u32 start,u32 end,u32 max_eirp,struct phy_info_arg * results)1323 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1324 struct phy_info_arg *results)
1325 {
1326 u16 m;
1327
1328 for (m = 0; m < *results->num_modes; m++) {
1329 int c;
1330 struct hostapd_hw_modes *mode = &results->modes[m];
1331
1332 for (c = 0; c < mode->num_channels; c++) {
1333 struct hostapd_channel_data *chan = &mode->channels[c];
1334 if ((u32) chan->freq - 10 >= start &&
1335 (u32) chan->freq + 10 <= end)
1336 chan->max_tx_power = max_eirp;
1337 }
1338 }
1339 }
1340
1341
nl80211_reg_rule_ht40(u32 start,u32 end,struct phy_info_arg * results)1342 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1343 struct phy_info_arg *results)
1344 {
1345 u16 m;
1346
1347 for (m = 0; m < *results->num_modes; m++) {
1348 if (!(results->modes[m].ht_capab &
1349 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1350 continue;
1351 nl80211_set_ht40_mode(&results->modes[m], start, end);
1352 }
1353 }
1354
1355
nl80211_reg_rule_sec(struct nlattr * tb[],struct phy_info_arg * results)1356 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1357 struct phy_info_arg *results)
1358 {
1359 u32 start, end, max_bw;
1360 u16 m;
1361
1362 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1363 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1364 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1365 return;
1366
1367 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1368 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1369 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1370
1371 if (max_bw < 20)
1372 return;
1373
1374 for (m = 0; m < *results->num_modes; m++) {
1375 if (!(results->modes[m].ht_capab &
1376 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1377 continue;
1378 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1379 }
1380 }
1381
1382
nl80211_set_vht_mode(struct hostapd_hw_modes * mode,int start,int end)1383 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1384 int end)
1385 {
1386 int c;
1387
1388 for (c = 0; c < mode->num_channels; c++) {
1389 struct hostapd_channel_data *chan = &mode->channels[c];
1390 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1391 chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1392
1393 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1394 chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1395
1396 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1397 chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1398
1399 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1400 chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1401 }
1402 }
1403
1404
nl80211_reg_rule_vht(struct nlattr * tb[],struct phy_info_arg * results)1405 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1406 struct phy_info_arg *results)
1407 {
1408 u32 start, end, max_bw;
1409 u16 m;
1410
1411 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1412 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1413 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1414 return;
1415
1416 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1417 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1418 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1419
1420 if (max_bw < 80)
1421 return;
1422
1423 for (m = 0; m < *results->num_modes; m++) {
1424 if (!(results->modes[m].ht_capab &
1425 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1426 continue;
1427 /* TODO: use a real VHT support indication */
1428 if (!results->modes[m].vht_capab)
1429 continue;
1430
1431 nl80211_set_vht_mode(&results->modes[m], start, end);
1432 }
1433 }
1434
1435
dfs_domain_name(enum nl80211_dfs_regions region)1436 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1437 {
1438 switch (region) {
1439 case NL80211_DFS_UNSET:
1440 return "DFS-UNSET";
1441 case NL80211_DFS_FCC:
1442 return "DFS-FCC";
1443 case NL80211_DFS_ETSI:
1444 return "DFS-ETSI";
1445 case NL80211_DFS_JP:
1446 return "DFS-JP";
1447 default:
1448 return "DFS-invalid";
1449 }
1450 }
1451
1452
nl80211_get_reg(struct nl_msg * msg,void * arg)1453 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1454 {
1455 struct phy_info_arg *results = arg;
1456 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1457 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1458 struct nlattr *nl_rule;
1459 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1460 int rem_rule;
1461 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1462 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1463 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1464 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1465 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1466 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1467 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1468 };
1469
1470 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1471 genlmsg_attrlen(gnlh, 0), NULL);
1472 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1473 !tb_msg[NL80211_ATTR_REG_RULES]) {
1474 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1475 "available");
1476 return NL_SKIP;
1477 }
1478
1479 if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1480 enum nl80211_dfs_regions dfs_domain;
1481 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1482 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1483 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1484 dfs_domain_name(dfs_domain));
1485 } else {
1486 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1487 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1488 }
1489
1490 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1491 {
1492 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1493 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1494 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1495 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1496 tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1497 continue;
1498 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1499 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1500 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1501 max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1502 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1503 max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1504 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1505 flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1506
1507 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1508 start, end, max_bw, max_eirp,
1509 flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1510 flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1511 flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1512 flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1513 "",
1514 flags & NL80211_RRF_DFS ? " (DFS)" : "",
1515 flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1516 flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1517 flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1518 if (max_bw >= 40)
1519 nl80211_reg_rule_ht40(start, end, results);
1520 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1521 nl80211_reg_rule_max_eirp(start, end, max_eirp,
1522 results);
1523 }
1524
1525 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1526 {
1527 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1528 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1529 nl80211_reg_rule_sec(tb_rule, results);
1530 }
1531
1532 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1533 {
1534 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1535 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1536 nl80211_reg_rule_vht(tb_rule, results);
1537 }
1538
1539 return NL_SKIP;
1540 }
1541
1542
nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data * drv,struct phy_info_arg * results)1543 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1544 struct phy_info_arg *results)
1545 {
1546 struct nl_msg *msg;
1547
1548 msg = nlmsg_alloc();
1549 if (!msg)
1550 return -ENOMEM;
1551
1552 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1553 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1554 }
1555
1556
1557 struct hostapd_hw_modes *
nl80211_get_hw_feature_data(void * priv,u16 * num_modes,u16 * flags)1558 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1559 {
1560 u32 feat;
1561 struct i802_bss *bss = priv;
1562 struct wpa_driver_nl80211_data *drv = bss->drv;
1563 int nl_flags = 0;
1564 struct nl_msg *msg;
1565 struct phy_info_arg result = {
1566 .num_modes = num_modes,
1567 .modes = NULL,
1568 .last_mode = -1,
1569 };
1570
1571 *num_modes = 0;
1572 *flags = 0;
1573
1574 feat = get_nl80211_protocol_features(drv);
1575 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1576 nl_flags = NLM_F_DUMP;
1577 if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
1578 nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
1579 nlmsg_free(msg);
1580 return NULL;
1581 }
1582
1583 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1584 nl80211_set_regulatory_flags(drv, &result);
1585 return wpa_driver_nl80211_postprocess_modes(result.modes,
1586 num_modes);
1587 }
1588
1589 return NULL;
1590 }
1591