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_DO_ACS:
593 drv->capa.flags |=
594 WPA_DRIVER_FLAGS_ACS_OFFLOAD;
595 break;
596 }
597 }
598
599 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u",
600 vinfo->vendor_id, vinfo->subcmd);
601 }
602 }
603
604 if (tb[NL80211_ATTR_VENDOR_EVENTS]) {
605 struct nlattr *nl;
606 int rem;
607
608 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) {
609 struct nl80211_vendor_cmd_info *vinfo;
610 if (nla_len(nl) != sizeof(*vinfo)) {
611 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info");
612 continue;
613 }
614 vinfo = nla_data(nl);
615 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u",
616 vinfo->vendor_id, vinfo->subcmd);
617 }
618 }
619
620 wiphy_info_wowlan_triggers(capa,
621 tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]);
622
623 if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA])
624 capa->max_stations =
625 nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]);
626
627 return NL_SKIP;
628 }
629
630
wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data * drv,struct wiphy_info_data * info)631 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
632 struct wiphy_info_data *info)
633 {
634 u32 feat;
635 struct nl_msg *msg;
636 int flags = 0;
637
638 os_memset(info, 0, sizeof(*info));
639 info->capa = &drv->capa;
640 info->drv = drv;
641
642 feat = get_nl80211_protocol_features(drv);
643 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
644 flags = NLM_F_DUMP;
645 msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY);
646 if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
647 nlmsg_free(msg);
648 return -1;
649 }
650
651 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info))
652 return -1;
653
654 if (info->auth_supported)
655 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
656 else if (!info->connect_supported) {
657 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
658 "authentication/association or connect commands");
659 info->error = 1;
660 }
661
662 if (info->p2p_go_supported && info->p2p_client_supported)
663 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
664 if (info->p2p_concurrent) {
665 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
666 "interface (driver advertised support)");
667 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
668 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
669 }
670 if (info->num_multichan_concurrent > 1) {
671 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel "
672 "concurrent (driver advertised support)");
673 drv->capa.num_multichan_concurrent =
674 info->num_multichan_concurrent;
675 }
676 if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
677 wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support");
678
679 /* default to 5000 since early versions of mac80211 don't set it */
680 if (!drv->capa.max_remain_on_chan)
681 drv->capa.max_remain_on_chan = 5000;
682
683 if (info->channel_switch_supported)
684 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA;
685 drv->capa.wmm_ac_supported = info->wmm_ac_supported;
686
687 drv->capa.mac_addr_rand_sched_scan_supported =
688 info->mac_addr_rand_sched_scan_supported;
689 drv->capa.mac_addr_rand_scan_supported =
690 info->mac_addr_rand_scan_supported;
691
692 return 0;
693 }
694
695
dfs_info_handler(struct nl_msg * msg,void * arg)696 static int dfs_info_handler(struct nl_msg *msg, void *arg)
697 {
698 struct nlattr *tb[NL80211_ATTR_MAX + 1];
699 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
700 int *dfs_capability_ptr = arg;
701
702 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
703 genlmsg_attrlen(gnlh, 0), NULL);
704
705 if (tb[NL80211_ATTR_VENDOR_DATA]) {
706 struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
707 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
708
709 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
710 nla_data(nl_vend), nla_len(nl_vend), NULL);
711
712 if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) {
713 u32 val;
714 val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]);
715 wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u",
716 val);
717 *dfs_capability_ptr = val;
718 }
719 }
720
721 return NL_SKIP;
722 }
723
724
qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data * drv)725 static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv)
726 {
727 struct nl_msg *msg;
728 int dfs_capability = 0;
729 int ret;
730
731 if (!drv->dfs_vendor_cmd_avail)
732 return;
733
734 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
735 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
736 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
737 QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) {
738 nlmsg_free(msg);
739 return;
740 }
741
742 ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability);
743 if (!ret && dfs_capability)
744 drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD;
745 }
746
747
748 struct features_info {
749 u8 *flags;
750 size_t flags_len;
751 };
752
753
features_info_handler(struct nl_msg * msg,void * arg)754 static int features_info_handler(struct nl_msg *msg, void *arg)
755 {
756 struct nlattr *tb[NL80211_ATTR_MAX + 1];
757 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
758 struct features_info *info = arg;
759 struct nlattr *nl_vend, *attr;
760
761 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
762 genlmsg_attrlen(gnlh, 0), NULL);
763
764 nl_vend = tb[NL80211_ATTR_VENDOR_DATA];
765 if (nl_vend) {
766 struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
767
768 nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
769 nla_data(nl_vend), nla_len(nl_vend), NULL);
770
771 attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS];
772 if (attr) {
773 info->flags = nla_data(attr);
774 info->flags_len = nla_len(attr);
775 }
776 }
777
778 return NL_SKIP;
779 }
780
781
check_feature(enum qca_wlan_vendor_features feature,struct features_info * info)782 static int check_feature(enum qca_wlan_vendor_features feature,
783 struct features_info *info)
784 {
785 size_t idx = feature / 8;
786
787 return (idx < info->flags_len) &&
788 (info->flags[idx] & BIT(feature % 8));
789 }
790
791
qca_nl80211_get_features(struct wpa_driver_nl80211_data * drv)792 static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv)
793 {
794 struct nl_msg *msg;
795 struct features_info info;
796 int ret;
797
798 if (!drv->get_features_vendor_cmd_avail)
799 return;
800
801 if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
802 nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
803 nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
804 QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) {
805 nlmsg_free(msg);
806 return;
807 }
808
809 os_memset(&info, 0, sizeof(info));
810 ret = send_and_recv_msgs(drv, msg, features_info_handler, &info);
811 if (ret || !info.flags)
812 return;
813
814 if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info))
815 drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD;
816
817 if (check_feature(QCA_WLAN_VENDOR_FEATURE_SUPPORT_HW_MODE_ANY, &info))
818 drv->capa.flags |= WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY;
819 }
820
821
wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data * drv)822 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
823 {
824 struct wiphy_info_data info;
825 if (wpa_driver_nl80211_get_info(drv, &info))
826 return -1;
827
828 if (info.error)
829 return -1;
830
831 drv->has_capability = 1;
832 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
833 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
834 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
835 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK |
836 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B |
837 WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192;
838 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
839 WPA_DRIVER_AUTH_SHARED |
840 WPA_DRIVER_AUTH_LEAP;
841
842 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
843 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
844 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
845
846 /*
847 * As all cfg80211 drivers must support cases where the AP interface is
848 * removed without the knowledge of wpa_supplicant/hostapd, e.g., in
849 * case that the user space daemon has crashed, they must be able to
850 * cleanup all stations and key entries in the AP tear down flow. Thus,
851 * this flag can/should always be set for cfg80211 drivers.
852 */
853 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT;
854
855 if (!info.device_ap_sme) {
856 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
857
858 /*
859 * No AP SME is currently assumed to also indicate no AP MLME
860 * in the driver/firmware.
861 */
862 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME;
863 }
864
865 drv->device_ap_sme = info.device_ap_sme;
866 drv->poll_command_supported = info.poll_command_supported;
867 drv->data_tx_status = info.data_tx_status;
868 drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported;
869 if (info.set_qos_map_supported)
870 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING;
871 drv->have_low_prio_scan = info.have_low_prio_scan;
872
873 /*
874 * If poll command and tx status are supported, mac80211 is new enough
875 * to have everything we need to not need monitor interfaces.
876 */
877 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status;
878
879 if (drv->device_ap_sme && drv->use_monitor) {
880 /*
881 * Non-mac80211 drivers may not support monitor interface.
882 * Make sure we do not get stuck with incorrect capability here
883 * by explicitly testing this.
884 */
885 if (!info.monitor_supported) {
886 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
887 "with device_ap_sme since no monitor mode "
888 "support detected");
889 drv->use_monitor = 0;
890 }
891 }
892
893 /*
894 * If we aren't going to use monitor interfaces, but the
895 * driver doesn't support data TX status, we won't get TX
896 * status for EAPOL frames.
897 */
898 if (!drv->use_monitor && !info.data_tx_status)
899 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
900
901 qca_nl80211_check_dfs_capa(drv);
902 qca_nl80211_get_features(drv);
903
904 return 0;
905 }
906
907
908 struct phy_info_arg {
909 u16 *num_modes;
910 struct hostapd_hw_modes *modes;
911 int last_mode, last_chan_idx;
912 };
913
phy_info_ht_capa(struct hostapd_hw_modes * mode,struct nlattr * capa,struct nlattr * ampdu_factor,struct nlattr * ampdu_density,struct nlattr * mcs_set)914 static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa,
915 struct nlattr *ampdu_factor,
916 struct nlattr *ampdu_density,
917 struct nlattr *mcs_set)
918 {
919 if (capa)
920 mode->ht_capab = nla_get_u16(capa);
921
922 if (ampdu_factor)
923 mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03;
924
925 if (ampdu_density)
926 mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2;
927
928 if (mcs_set && nla_len(mcs_set) >= 16) {
929 u8 *mcs;
930 mcs = nla_data(mcs_set);
931 os_memcpy(mode->mcs_set, mcs, 16);
932 }
933 }
934
935
phy_info_vht_capa(struct hostapd_hw_modes * mode,struct nlattr * capa,struct nlattr * mcs_set)936 static void phy_info_vht_capa(struct hostapd_hw_modes *mode,
937 struct nlattr *capa,
938 struct nlattr *mcs_set)
939 {
940 if (capa)
941 mode->vht_capab = nla_get_u32(capa);
942
943 if (mcs_set && nla_len(mcs_set) >= 8) {
944 u8 *mcs;
945 mcs = nla_data(mcs_set);
946 os_memcpy(mode->vht_mcs_set, mcs, 8);
947 }
948 }
949
950
phy_info_freq(struct hostapd_hw_modes * mode,struct hostapd_channel_data * chan,struct nlattr * tb_freq[])951 static void phy_info_freq(struct hostapd_hw_modes *mode,
952 struct hostapd_channel_data *chan,
953 struct nlattr *tb_freq[])
954 {
955 u8 channel;
956 chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
957 chan->flag = 0;
958 chan->dfs_cac_ms = 0;
959 if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES)
960 chan->chan = channel;
961
962 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
963 chan->flag |= HOSTAPD_CHAN_DISABLED;
964 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR])
965 chan->flag |= HOSTAPD_CHAN_NO_IR;
966 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
967 chan->flag |= HOSTAPD_CHAN_RADAR;
968 if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY])
969 chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY;
970 if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT])
971 chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT;
972
973 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) {
974 enum nl80211_dfs_state state =
975 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]);
976
977 switch (state) {
978 case NL80211_DFS_USABLE:
979 chan->flag |= HOSTAPD_CHAN_DFS_USABLE;
980 break;
981 case NL80211_DFS_AVAILABLE:
982 chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE;
983 break;
984 case NL80211_DFS_UNAVAILABLE:
985 chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE;
986 break;
987 }
988 }
989
990 if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) {
991 chan->dfs_cac_ms = nla_get_u32(
992 tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]);
993 }
994 }
995
996
phy_info_freqs(struct phy_info_arg * phy_info,struct hostapd_hw_modes * mode,struct nlattr * tb)997 static int phy_info_freqs(struct phy_info_arg *phy_info,
998 struct hostapd_hw_modes *mode, struct nlattr *tb)
999 {
1000 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1001 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1002 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1003 [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG },
1004 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1005 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1006 [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 },
1007 };
1008 int new_channels = 0;
1009 struct hostapd_channel_data *channel;
1010 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1011 struct nlattr *nl_freq;
1012 int rem_freq, idx;
1013
1014 if (tb == NULL)
1015 return NL_OK;
1016
1017 nla_for_each_nested(nl_freq, tb, rem_freq) {
1018 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
1019 nla_data(nl_freq), nla_len(nl_freq), freq_policy);
1020 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1021 continue;
1022 new_channels++;
1023 }
1024
1025 channel = os_realloc_array(mode->channels,
1026 mode->num_channels + new_channels,
1027 sizeof(struct hostapd_channel_data));
1028 if (!channel)
1029 return NL_SKIP;
1030
1031 mode->channels = channel;
1032 mode->num_channels += new_channels;
1033
1034 idx = phy_info->last_chan_idx;
1035
1036 nla_for_each_nested(nl_freq, tb, rem_freq) {
1037 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX,
1038 nla_data(nl_freq), nla_len(nl_freq), freq_policy);
1039 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1040 continue;
1041 phy_info_freq(mode, &mode->channels[idx], tb_freq);
1042 idx++;
1043 }
1044 phy_info->last_chan_idx = idx;
1045
1046 return NL_OK;
1047 }
1048
1049
phy_info_rates(struct hostapd_hw_modes * mode,struct nlattr * tb)1050 static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb)
1051 {
1052 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1053 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1054 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] =
1055 { .type = NLA_FLAG },
1056 };
1057 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1058 struct nlattr *nl_rate;
1059 int rem_rate, idx;
1060
1061 if (tb == NULL)
1062 return NL_OK;
1063
1064 nla_for_each_nested(nl_rate, tb, rem_rate) {
1065 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1066 nla_data(nl_rate), nla_len(nl_rate),
1067 rate_policy);
1068 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1069 continue;
1070 mode->num_rates++;
1071 }
1072
1073 mode->rates = os_calloc(mode->num_rates, sizeof(int));
1074 if (!mode->rates)
1075 return NL_SKIP;
1076
1077 idx = 0;
1078
1079 nla_for_each_nested(nl_rate, tb, rem_rate) {
1080 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX,
1081 nla_data(nl_rate), nla_len(nl_rate),
1082 rate_policy);
1083 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1084 continue;
1085 mode->rates[idx] = nla_get_u32(
1086 tb_rate[NL80211_BITRATE_ATTR_RATE]);
1087 idx++;
1088 }
1089
1090 return NL_OK;
1091 }
1092
1093
phy_info_band(struct phy_info_arg * phy_info,struct nlattr * nl_band)1094 static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band)
1095 {
1096 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1097 struct hostapd_hw_modes *mode;
1098 int ret;
1099
1100 if (phy_info->last_mode != nl_band->nla_type) {
1101 mode = os_realloc_array(phy_info->modes,
1102 *phy_info->num_modes + 1,
1103 sizeof(*mode));
1104 if (!mode)
1105 return NL_SKIP;
1106 phy_info->modes = mode;
1107
1108 mode = &phy_info->modes[*(phy_info->num_modes)];
1109 os_memset(mode, 0, sizeof(*mode));
1110 mode->mode = NUM_HOSTAPD_MODES;
1111 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN |
1112 HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN;
1113
1114 /*
1115 * Unsupported VHT MCS stream is defined as value 3, so the VHT
1116 * MCS RX/TX map must be initialized with 0xffff to mark all 8
1117 * possible streams as unsupported. This will be overridden if
1118 * driver advertises VHT support.
1119 */
1120 mode->vht_mcs_set[0] = 0xff;
1121 mode->vht_mcs_set[1] = 0xff;
1122 mode->vht_mcs_set[4] = 0xff;
1123 mode->vht_mcs_set[5] = 0xff;
1124
1125 *(phy_info->num_modes) += 1;
1126 phy_info->last_mode = nl_band->nla_type;
1127 phy_info->last_chan_idx = 0;
1128 } else
1129 mode = &phy_info->modes[*(phy_info->num_modes) - 1];
1130
1131 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1132 nla_len(nl_band), NULL);
1133
1134 phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA],
1135 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR],
1136 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY],
1137 tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
1138 phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA],
1139 tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
1140 ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]);
1141 if (ret != NL_OK)
1142 return ret;
1143 ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]);
1144 if (ret != NL_OK)
1145 return ret;
1146
1147 return NL_OK;
1148 }
1149
1150
phy_info_handler(struct nl_msg * msg,void * arg)1151 static int phy_info_handler(struct nl_msg *msg, void *arg)
1152 {
1153 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1154 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1155 struct phy_info_arg *phy_info = arg;
1156 struct nlattr *nl_band;
1157 int rem_band;
1158
1159 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1160 genlmsg_attrlen(gnlh, 0), NULL);
1161
1162 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1163 return NL_SKIP;
1164
1165 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band)
1166 {
1167 int res = phy_info_band(phy_info, nl_band);
1168 if (res != NL_OK)
1169 return res;
1170 }
1171
1172 return NL_SKIP;
1173 }
1174
1175
1176 static struct hostapd_hw_modes *
wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes * modes,u16 * num_modes)1177 wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes,
1178 u16 *num_modes)
1179 {
1180 u16 m;
1181 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1182 int i, mode11g_idx = -1;
1183
1184 /* heuristic to set up modes */
1185 for (m = 0; m < *num_modes; m++) {
1186 if (!modes[m].num_channels)
1187 continue;
1188 if (modes[m].channels[0].freq < 4000) {
1189 modes[m].mode = HOSTAPD_MODE_IEEE80211B;
1190 for (i = 0; i < modes[m].num_rates; i++) {
1191 if (modes[m].rates[i] > 200) {
1192 modes[m].mode = HOSTAPD_MODE_IEEE80211G;
1193 break;
1194 }
1195 }
1196 } else if (modes[m].channels[0].freq > 50000)
1197 modes[m].mode = HOSTAPD_MODE_IEEE80211AD;
1198 else
1199 modes[m].mode = HOSTAPD_MODE_IEEE80211A;
1200 }
1201
1202 /* If only 802.11g mode is included, use it to construct matching
1203 * 802.11b mode data. */
1204
1205 for (m = 0; m < *num_modes; m++) {
1206 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1207 return modes; /* 802.11b already included */
1208 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1209 mode11g_idx = m;
1210 }
1211
1212 if (mode11g_idx < 0)
1213 return modes; /* 2.4 GHz band not supported at all */
1214
1215 nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes));
1216 if (nmodes == NULL)
1217 return modes; /* Could not add 802.11b mode */
1218
1219 mode = &nmodes[*num_modes];
1220 os_memset(mode, 0, sizeof(*mode));
1221 (*num_modes)++;
1222 modes = nmodes;
1223
1224 mode->mode = HOSTAPD_MODE_IEEE80211B;
1225
1226 mode11g = &modes[mode11g_idx];
1227 mode->num_channels = mode11g->num_channels;
1228 mode->channels = os_malloc(mode11g->num_channels *
1229 sizeof(struct hostapd_channel_data));
1230 if (mode->channels == NULL) {
1231 (*num_modes)--;
1232 return modes; /* Could not add 802.11b mode */
1233 }
1234 os_memcpy(mode->channels, mode11g->channels,
1235 mode11g->num_channels * sizeof(struct hostapd_channel_data));
1236
1237 mode->num_rates = 0;
1238 mode->rates = os_malloc(4 * sizeof(int));
1239 if (mode->rates == NULL) {
1240 os_free(mode->channels);
1241 (*num_modes)--;
1242 return modes; /* Could not add 802.11b mode */
1243 }
1244
1245 for (i = 0; i < mode11g->num_rates; i++) {
1246 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
1247 mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
1248 continue;
1249 mode->rates[mode->num_rates] = mode11g->rates[i];
1250 mode->num_rates++;
1251 if (mode->num_rates == 4)
1252 break;
1253 }
1254
1255 if (mode->num_rates == 0) {
1256 os_free(mode->channels);
1257 os_free(mode->rates);
1258 (*num_modes)--;
1259 return modes; /* No 802.11b rates */
1260 }
1261
1262 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1263 "information");
1264
1265 return modes;
1266 }
1267
1268
nl80211_set_ht40_mode(struct hostapd_hw_modes * mode,int start,int end)1269 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
1270 int end)
1271 {
1272 int c;
1273
1274 for (c = 0; c < mode->num_channels; c++) {
1275 struct hostapd_channel_data *chan = &mode->channels[c];
1276 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
1277 chan->flag |= HOSTAPD_CHAN_HT40;
1278 }
1279 }
1280
1281
nl80211_set_ht40_mode_sec(struct hostapd_hw_modes * mode,int start,int end)1282 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
1283 int end)
1284 {
1285 int c;
1286
1287 for (c = 0; c < mode->num_channels; c++) {
1288 struct hostapd_channel_data *chan = &mode->channels[c];
1289 if (!(chan->flag & HOSTAPD_CHAN_HT40))
1290 continue;
1291 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
1292 chan->flag |= HOSTAPD_CHAN_HT40MINUS;
1293 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
1294 chan->flag |= HOSTAPD_CHAN_HT40PLUS;
1295 }
1296 }
1297
1298
nl80211_reg_rule_max_eirp(u32 start,u32 end,u32 max_eirp,struct phy_info_arg * results)1299 static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp,
1300 struct phy_info_arg *results)
1301 {
1302 u16 m;
1303
1304 for (m = 0; m < *results->num_modes; m++) {
1305 int c;
1306 struct hostapd_hw_modes *mode = &results->modes[m];
1307
1308 for (c = 0; c < mode->num_channels; c++) {
1309 struct hostapd_channel_data *chan = &mode->channels[c];
1310 if ((u32) chan->freq - 10 >= start &&
1311 (u32) chan->freq + 10 <= end)
1312 chan->max_tx_power = max_eirp;
1313 }
1314 }
1315 }
1316
1317
nl80211_reg_rule_ht40(u32 start,u32 end,struct phy_info_arg * results)1318 static void nl80211_reg_rule_ht40(u32 start, u32 end,
1319 struct phy_info_arg *results)
1320 {
1321 u16 m;
1322
1323 for (m = 0; m < *results->num_modes; m++) {
1324 if (!(results->modes[m].ht_capab &
1325 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1326 continue;
1327 nl80211_set_ht40_mode(&results->modes[m], start, end);
1328 }
1329 }
1330
1331
nl80211_reg_rule_sec(struct nlattr * tb[],struct phy_info_arg * results)1332 static void nl80211_reg_rule_sec(struct nlattr *tb[],
1333 struct phy_info_arg *results)
1334 {
1335 u32 start, end, max_bw;
1336 u16 m;
1337
1338 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1339 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1340 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1341 return;
1342
1343 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1344 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1345 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1346
1347 if (max_bw < 20)
1348 return;
1349
1350 for (m = 0; m < *results->num_modes; m++) {
1351 if (!(results->modes[m].ht_capab &
1352 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1353 continue;
1354 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
1355 }
1356 }
1357
1358
nl80211_set_vht_mode(struct hostapd_hw_modes * mode,int start,int end)1359 static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start,
1360 int end)
1361 {
1362 int c;
1363
1364 for (c = 0; c < mode->num_channels; c++) {
1365 struct hostapd_channel_data *chan = &mode->channels[c];
1366 if (chan->freq - 10 >= start && chan->freq + 70 <= end)
1367 chan->flag |= HOSTAPD_CHAN_VHT_10_70;
1368
1369 if (chan->freq - 30 >= start && chan->freq + 50 <= end)
1370 chan->flag |= HOSTAPD_CHAN_VHT_30_50;
1371
1372 if (chan->freq - 50 >= start && chan->freq + 30 <= end)
1373 chan->flag |= HOSTAPD_CHAN_VHT_50_30;
1374
1375 if (chan->freq - 70 >= start && chan->freq + 10 <= end)
1376 chan->flag |= HOSTAPD_CHAN_VHT_70_10;
1377 }
1378 }
1379
1380
nl80211_reg_rule_vht(struct nlattr * tb[],struct phy_info_arg * results)1381 static void nl80211_reg_rule_vht(struct nlattr *tb[],
1382 struct phy_info_arg *results)
1383 {
1384 u32 start, end, max_bw;
1385 u16 m;
1386
1387 if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1388 tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
1389 tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
1390 return;
1391
1392 start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1393 end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1394 max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1395
1396 if (max_bw < 80)
1397 return;
1398
1399 for (m = 0; m < *results->num_modes; m++) {
1400 if (!(results->modes[m].ht_capab &
1401 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1402 continue;
1403 /* TODO: use a real VHT support indication */
1404 if (!results->modes[m].vht_capab)
1405 continue;
1406
1407 nl80211_set_vht_mode(&results->modes[m], start, end);
1408 }
1409 }
1410
1411
dfs_domain_name(enum nl80211_dfs_regions region)1412 static const char * dfs_domain_name(enum nl80211_dfs_regions region)
1413 {
1414 switch (region) {
1415 case NL80211_DFS_UNSET:
1416 return "DFS-UNSET";
1417 case NL80211_DFS_FCC:
1418 return "DFS-FCC";
1419 case NL80211_DFS_ETSI:
1420 return "DFS-ETSI";
1421 case NL80211_DFS_JP:
1422 return "DFS-JP";
1423 default:
1424 return "DFS-invalid";
1425 }
1426 }
1427
1428
nl80211_get_reg(struct nl_msg * msg,void * arg)1429 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
1430 {
1431 struct phy_info_arg *results = arg;
1432 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1433 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1434 struct nlattr *nl_rule;
1435 struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
1436 int rem_rule;
1437 static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1438 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
1439 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
1440 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
1441 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
1442 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
1443 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
1444 };
1445
1446 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1447 genlmsg_attrlen(gnlh, 0), NULL);
1448 if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
1449 !tb_msg[NL80211_ATTR_REG_RULES]) {
1450 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
1451 "available");
1452 return NL_SKIP;
1453 }
1454
1455 if (tb_msg[NL80211_ATTR_DFS_REGION]) {
1456 enum nl80211_dfs_regions dfs_domain;
1457 dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]);
1458 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)",
1459 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]),
1460 dfs_domain_name(dfs_domain));
1461 } else {
1462 wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
1463 (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
1464 }
1465
1466 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1467 {
1468 u32 start, end, max_eirp = 0, max_bw = 0, flags = 0;
1469 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1470 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1471 if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
1472 tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL)
1473 continue;
1474 start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
1475 end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
1476 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1477 max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100;
1478 if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW])
1479 max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
1480 if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS])
1481 flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]);
1482
1483 wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s",
1484 start, end, max_bw, max_eirp,
1485 flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "",
1486 flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "",
1487 flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "",
1488 flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" :
1489 "",
1490 flags & NL80211_RRF_DFS ? " (DFS)" : "",
1491 flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "",
1492 flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "",
1493 flags & NL80211_RRF_NO_IR ? " (no IR)" : "");
1494 if (max_bw >= 40)
1495 nl80211_reg_rule_ht40(start, end, results);
1496 if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP])
1497 nl80211_reg_rule_max_eirp(start, end, max_eirp,
1498 results);
1499 }
1500
1501 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1502 {
1503 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1504 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1505 nl80211_reg_rule_sec(tb_rule, results);
1506 }
1507
1508 nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
1509 {
1510 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
1511 nla_data(nl_rule), nla_len(nl_rule), reg_policy);
1512 nl80211_reg_rule_vht(tb_rule, results);
1513 }
1514
1515 return NL_SKIP;
1516 }
1517
1518
nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data * drv,struct phy_info_arg * results)1519 static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
1520 struct phy_info_arg *results)
1521 {
1522 struct nl_msg *msg;
1523
1524 msg = nlmsg_alloc();
1525 if (!msg)
1526 return -ENOMEM;
1527
1528 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
1529 return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
1530 }
1531
1532
1533 struct hostapd_hw_modes *
nl80211_get_hw_feature_data(void * priv,u16 * num_modes,u16 * flags)1534 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
1535 {
1536 u32 feat;
1537 struct i802_bss *bss = priv;
1538 struct wpa_driver_nl80211_data *drv = bss->drv;
1539 int nl_flags = 0;
1540 struct nl_msg *msg;
1541 struct phy_info_arg result = {
1542 .num_modes = num_modes,
1543 .modes = NULL,
1544 .last_mode = -1,
1545 };
1546
1547 *num_modes = 0;
1548 *flags = 0;
1549
1550 feat = get_nl80211_protocol_features(drv);
1551 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
1552 nl_flags = NLM_F_DUMP;
1553 if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) ||
1554 nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) {
1555 nlmsg_free(msg);
1556 return NULL;
1557 }
1558
1559 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
1560 nl80211_set_regulatory_flags(drv, &result);
1561 return wpa_driver_nl80211_postprocess_modes(result.modes,
1562 num_modes);
1563 }
1564
1565 return NULL;
1566 }
1567