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0fafeb54 JM |
1 | /* |
2 | * Driver interaction with Linux nl80211/cfg80211 - Capabilities | |
399e6135 | 3 | * Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi> |
0fafeb54 JM |
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 | ||
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 | ||
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) | |
9589a91e JM |
45 | return 0; |
46 | ||
47 | if (!nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES)) { | |
48 | nlmsg_free(msg); | |
49 | return 0; | |
50 | } | |
0fafeb54 | 51 | |
0fafeb54 JM |
52 | if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) |
53 | return feat; | |
54 | ||
0fafeb54 JM |
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; | |
0fafeb54 JM |
69 | unsigned int auth_supported:1; |
70 | unsigned int connect_supported:1; | |
71 | unsigned int p2p_go_supported:1; | |
72 | unsigned int p2p_client_supported:1; | |
abb8d08b | 73 | unsigned int p2p_go_ctwindow_supported:1; |
0fafeb54 JM |
74 | unsigned int p2p_concurrent:1; |
75 | unsigned int channel_switch_supported:1; | |
76 | unsigned int set_qos_map_supported:1; | |
77 | unsigned int have_low_prio_scan:1; | |
dfa87878 | 78 | unsigned int wmm_ac_supported:1; |
86056fea IP |
79 | unsigned int mac_addr_rand_scan_supported:1; |
80 | unsigned int mac_addr_rand_sched_scan_supported:1; | |
0fafeb54 JM |
81 | }; |
82 | ||
83 | ||
84 | static unsigned int probe_resp_offload_support(int supp_protocols) | |
85 | { | |
86 | unsigned int prot = 0; | |
87 | ||
88 | if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) | |
89 | prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; | |
90 | if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) | |
91 | prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; | |
92 | if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) | |
93 | prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; | |
94 | if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) | |
95 | prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; | |
96 | ||
97 | return prot; | |
98 | } | |
99 | ||
100 | ||
101 | static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, | |
102 | struct nlattr *tb) | |
103 | { | |
104 | struct nlattr *nl_mode; | |
105 | int i; | |
106 | ||
107 | if (tb == NULL) | |
108 | return; | |
109 | ||
110 | nla_for_each_nested(nl_mode, tb, i) { | |
111 | switch (nla_type(nl_mode)) { | |
112 | case NL80211_IFTYPE_AP: | |
113 | info->capa->flags |= WPA_DRIVER_FLAGS_AP; | |
114 | break; | |
115 | case NL80211_IFTYPE_MESH_POINT: | |
116 | info->capa->flags |= WPA_DRIVER_FLAGS_MESH; | |
117 | break; | |
118 | case NL80211_IFTYPE_ADHOC: | |
119 | info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; | |
120 | break; | |
121 | case NL80211_IFTYPE_P2P_DEVICE: | |
122 | info->capa->flags |= | |
123 | WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE; | |
124 | break; | |
125 | case NL80211_IFTYPE_P2P_GO: | |
126 | info->p2p_go_supported = 1; | |
127 | break; | |
128 | case NL80211_IFTYPE_P2P_CLIENT: | |
129 | info->p2p_client_supported = 1; | |
130 | break; | |
0fafeb54 JM |
131 | } |
132 | } | |
133 | } | |
134 | ||
135 | ||
136 | static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, | |
137 | struct nlattr *nl_combi) | |
138 | { | |
139 | struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; | |
140 | struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; | |
141 | struct nlattr *nl_limit, *nl_mode; | |
142 | int err, rem_limit, rem_mode; | |
143 | int combination_has_p2p = 0, combination_has_mgd = 0; | |
144 | static struct nla_policy | |
145 | iface_combination_policy[NUM_NL80211_IFACE_COMB] = { | |
146 | [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, | |
147 | [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, | |
148 | [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, | |
149 | [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, | |
150 | [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 }, | |
151 | }, | |
152 | iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { | |
153 | [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, | |
154 | [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, | |
155 | }; | |
156 | ||
157 | err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, | |
158 | nl_combi, iface_combination_policy); | |
159 | if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || | |
160 | !tb_comb[NL80211_IFACE_COMB_MAXNUM] || | |
161 | !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) | |
162 | return 0; /* broken combination */ | |
163 | ||
164 | if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]) | |
165 | info->capa->flags |= WPA_DRIVER_FLAGS_RADAR; | |
166 | ||
167 | nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], | |
168 | rem_limit) { | |
169 | err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, | |
170 | nl_limit, iface_limit_policy); | |
171 | if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) | |
172 | return 0; /* broken combination */ | |
173 | ||
174 | nla_for_each_nested(nl_mode, | |
175 | tb_limit[NL80211_IFACE_LIMIT_TYPES], | |
176 | rem_mode) { | |
177 | int ift = nla_type(nl_mode); | |
178 | if (ift == NL80211_IFTYPE_P2P_GO || | |
179 | ift == NL80211_IFTYPE_P2P_CLIENT) | |
180 | combination_has_p2p = 1; | |
181 | if (ift == NL80211_IFTYPE_STATION) | |
182 | combination_has_mgd = 1; | |
183 | } | |
184 | if (combination_has_p2p && combination_has_mgd) | |
185 | break; | |
186 | } | |
187 | ||
188 | if (combination_has_p2p && combination_has_mgd) { | |
189 | unsigned int num_channels = | |
190 | nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]); | |
191 | ||
192 | info->p2p_concurrent = 1; | |
193 | if (info->num_multichan_concurrent < num_channels) | |
194 | info->num_multichan_concurrent = num_channels; | |
195 | } | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | ||
201 | static void wiphy_info_iface_comb(struct wiphy_info_data *info, | |
202 | struct nlattr *tb) | |
203 | { | |
204 | struct nlattr *nl_combi; | |
205 | int rem_combi; | |
206 | ||
207 | if (tb == NULL) | |
208 | return; | |
209 | ||
210 | nla_for_each_nested(nl_combi, tb, rem_combi) { | |
211 | if (wiphy_info_iface_comb_process(info, nl_combi) > 0) | |
212 | break; | |
213 | } | |
214 | } | |
215 | ||
216 | ||
217 | static void wiphy_info_supp_cmds(struct wiphy_info_data *info, | |
218 | struct nlattr *tb) | |
219 | { | |
220 | struct nlattr *nl_cmd; | |
221 | int i; | |
222 | ||
223 | if (tb == NULL) | |
224 | return; | |
225 | ||
226 | nla_for_each_nested(nl_cmd, tb, i) { | |
227 | switch (nla_get_u32(nl_cmd)) { | |
228 | case NL80211_CMD_AUTHENTICATE: | |
229 | info->auth_supported = 1; | |
230 | break; | |
231 | case NL80211_CMD_CONNECT: | |
232 | info->connect_supported = 1; | |
233 | break; | |
234 | case NL80211_CMD_START_SCHED_SCAN: | |
235 | info->capa->sched_scan_supported = 1; | |
236 | break; | |
237 | case NL80211_CMD_PROBE_CLIENT: | |
238 | info->poll_command_supported = 1; | |
239 | break; | |
240 | case NL80211_CMD_CHANNEL_SWITCH: | |
241 | info->channel_switch_supported = 1; | |
242 | break; | |
243 | case NL80211_CMD_SET_QOS_MAP: | |
244 | info->set_qos_map_supported = 1; | |
245 | break; | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
250 | ||
251 | static void wiphy_info_cipher_suites(struct wiphy_info_data *info, | |
252 | struct nlattr *tb) | |
253 | { | |
254 | int i, num; | |
255 | u32 *ciphers; | |
256 | ||
257 | if (tb == NULL) | |
258 | return; | |
259 | ||
260 | num = nla_len(tb) / sizeof(u32); | |
261 | ciphers = nla_data(tb); | |
262 | for (i = 0; i < num; i++) { | |
263 | u32 c = ciphers[i]; | |
264 | ||
265 | wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d", | |
266 | c >> 24, (c >> 16) & 0xff, | |
267 | (c >> 8) & 0xff, c & 0xff); | |
268 | switch (c) { | |
269 | case WLAN_CIPHER_SUITE_CCMP_256: | |
270 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256; | |
271 | break; | |
272 | case WLAN_CIPHER_SUITE_GCMP_256: | |
273 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256; | |
274 | break; | |
275 | case WLAN_CIPHER_SUITE_CCMP: | |
276 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP; | |
277 | break; | |
278 | case WLAN_CIPHER_SUITE_GCMP: | |
279 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP; | |
280 | break; | |
281 | case WLAN_CIPHER_SUITE_TKIP: | |
282 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP; | |
283 | break; | |
284 | case WLAN_CIPHER_SUITE_WEP104: | |
285 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104; | |
286 | break; | |
287 | case WLAN_CIPHER_SUITE_WEP40: | |
288 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40; | |
289 | break; | |
290 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
291 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP; | |
292 | break; | |
293 | case WLAN_CIPHER_SUITE_BIP_GMAC_128: | |
294 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128; | |
295 | break; | |
296 | case WLAN_CIPHER_SUITE_BIP_GMAC_256: | |
297 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256; | |
298 | break; | |
299 | case WLAN_CIPHER_SUITE_BIP_CMAC_256: | |
300 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256; | |
301 | break; | |
302 | case WLAN_CIPHER_SUITE_NO_GROUP_ADDR: | |
303 | info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED; | |
304 | break; | |
305 | } | |
306 | } | |
307 | } | |
308 | ||
309 | ||
310 | static void wiphy_info_max_roc(struct wpa_driver_capa *capa, | |
311 | struct nlattr *tb) | |
312 | { | |
313 | if (tb) | |
314 | capa->max_remain_on_chan = nla_get_u32(tb); | |
315 | } | |
316 | ||
317 | ||
318 | static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, | |
319 | struct nlattr *ext_setup) | |
320 | { | |
321 | if (tdls == NULL) | |
322 | return; | |
323 | ||
324 | wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); | |
325 | capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; | |
326 | ||
327 | if (ext_setup) { | |
328 | wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); | |
329 | capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; | |
330 | } | |
331 | } | |
332 | ||
333 | ||
4acdc48a JD |
334 | static int ext_feature_isset(const u8 *ext_features, int ext_features_len, |
335 | enum nl80211_ext_feature_index ftidx) | |
336 | { | |
337 | u8 ft_byte; | |
338 | ||
339 | if ((int) ftidx / 8 >= ext_features_len) | |
340 | return 0; | |
341 | ||
342 | ft_byte = ext_features[ftidx / 8]; | |
343 | return (ft_byte & BIT(ftidx % 8)) != 0; | |
344 | } | |
345 | ||
346 | ||
347 | static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info, | |
348 | struct nlattr *tb) | |
349 | { | |
350 | struct wpa_driver_capa *capa = info->capa; | |
b5d172e5 BL |
351 | u8 *ext_features; |
352 | int len; | |
4acdc48a JD |
353 | |
354 | if (tb == NULL) | |
355 | return; | |
356 | ||
b5d172e5 BL |
357 | ext_features = nla_data(tb); |
358 | len = nla_len(tb); | |
359 | ||
360 | if (ext_feature_isset(ext_features, len, NL80211_EXT_FEATURE_VHT_IBSS)) | |
4acdc48a | 361 | capa->flags |= WPA_DRIVER_FLAGS_VHT_IBSS; |
b5d172e5 BL |
362 | |
363 | if (ext_feature_isset(ext_features, len, NL80211_EXT_FEATURE_RRM)) | |
364 | capa->rrm_flags |= WPA_DRIVER_FLAGS_SUPPORT_RRM; | |
befdb2dc JM |
365 | |
366 | if (ext_feature_isset(ext_features, len, NL80211_EXT_FEATURE_FILS_STA)) | |
367 | capa->flags |= WPA_DRIVER_FLAGS_SUPPORT_FILS; | |
d4f3003c PK |
368 | |
369 | if (ext_feature_isset(ext_features, len, | |
370 | NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) | |
371 | capa->flags |= WPA_DRIVER_FLAGS_BEACON_RATE_LEGACY; | |
372 | ||
373 | if (ext_feature_isset(ext_features, len, | |
374 | NL80211_EXT_FEATURE_BEACON_RATE_HT)) | |
375 | capa->flags |= WPA_DRIVER_FLAGS_BEACON_RATE_HT; | |
376 | ||
377 | if (ext_feature_isset(ext_features, len, | |
378 | NL80211_EXT_FEATURE_BEACON_RATE_VHT)) | |
379 | capa->flags |= WPA_DRIVER_FLAGS_BEACON_RATE_VHT; | |
96a5f14e AS |
380 | |
381 | if (ext_feature_isset(ext_features, len, | |
382 | NL80211_EXT_FEATURE_SET_SCAN_DWELL)) | |
383 | capa->rrm_flags |= WPA_DRIVER_FLAGS_SUPPORT_SET_SCAN_DWELL; | |
384 | ||
385 | if (ext_feature_isset(ext_features, len, | |
386 | NL80211_EXT_FEATURE_SCAN_START_TIME) && | |
387 | ext_feature_isset(ext_features, len, | |
388 | NL80211_EXT_FEATURE_BSS_PARENT_TSF) && | |
389 | ext_feature_isset(ext_features, len, | |
390 | NL80211_EXT_FEATURE_SET_SCAN_DWELL)) | |
391 | capa->rrm_flags |= WPA_DRIVER_FLAGS_SUPPORT_BEACON_REPORT; | |
4acdc48a JD |
392 | } |
393 | ||
394 | ||
0fafeb54 JM |
395 | static void wiphy_info_feature_flags(struct wiphy_info_data *info, |
396 | struct nlattr *tb) | |
397 | { | |
398 | u32 flags; | |
399 | struct wpa_driver_capa *capa = info->capa; | |
400 | ||
401 | if (tb == NULL) | |
402 | return; | |
403 | ||
404 | flags = nla_get_u32(tb); | |
405 | ||
406 | if (flags & NL80211_FEATURE_SK_TX_STATUS) | |
407 | info->data_tx_status = 1; | |
408 | ||
409 | if (flags & NL80211_FEATURE_INACTIVITY_TIMER) | |
410 | capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; | |
411 | ||
412 | if (flags & NL80211_FEATURE_SAE) | |
413 | capa->flags |= WPA_DRIVER_FLAGS_SAE; | |
414 | ||
415 | if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) | |
416 | capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; | |
417 | ||
418 | if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE) | |
419 | capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX; | |
420 | ||
4daa5729 AN |
421 | if (flags & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) { |
422 | wpa_printf(MSG_DEBUG, "nl80211: TDLS channel switch"); | |
423 | capa->flags |= WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH; | |
424 | } | |
425 | ||
abb8d08b EP |
426 | if (flags & NL80211_FEATURE_P2P_GO_CTWIN) |
427 | info->p2p_go_ctwindow_supported = 1; | |
428 | ||
0fafeb54 JM |
429 | if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN) |
430 | info->have_low_prio_scan = 1; | |
431 | ||
86056fea IP |
432 | if (flags & NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR) |
433 | info->mac_addr_rand_scan_supported = 1; | |
434 | ||
435 | if (flags & NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR) | |
436 | info->mac_addr_rand_sched_scan_supported = 1; | |
437 | ||
0fafeb54 JM |
438 | if (flags & NL80211_FEATURE_STATIC_SMPS) |
439 | capa->smps_modes |= WPA_DRIVER_SMPS_MODE_STATIC; | |
440 | ||
441 | if (flags & NL80211_FEATURE_DYNAMIC_SMPS) | |
442 | capa->smps_modes |= WPA_DRIVER_SMPS_MODE_DYNAMIC; | |
dfa87878 MB |
443 | |
444 | if (flags & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) | |
445 | info->wmm_ac_supported = 1; | |
58162adf AK |
446 | |
447 | if (flags & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) | |
448 | capa->rrm_flags |= WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES; | |
449 | ||
450 | if (flags & NL80211_FEATURE_WFA_TPC_IE_IN_PROBES) | |
451 | capa->rrm_flags |= WPA_DRIVER_FLAGS_WFA_TPC_IE_IN_PROBES; | |
452 | ||
453 | if (flags & NL80211_FEATURE_QUIET) | |
454 | capa->rrm_flags |= WPA_DRIVER_FLAGS_QUIET; | |
455 | ||
456 | if (flags & NL80211_FEATURE_TX_POWER_INSERTION) | |
457 | capa->rrm_flags |= WPA_DRIVER_FLAGS_TX_POWER_INSERTION; | |
1830817e JD |
458 | |
459 | if (flags & NL80211_FEATURE_HT_IBSS) | |
460 | capa->flags |= WPA_DRIVER_FLAGS_HT_IBSS; | |
dc55b6b6 AB |
461 | |
462 | if (flags & NL80211_FEATURE_FULL_AP_CLIENT_STATE) | |
463 | capa->flags |= WPA_DRIVER_FLAGS_FULL_AP_CLIENT_STATE; | |
0fafeb54 JM |
464 | } |
465 | ||
466 | ||
467 | static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, | |
468 | struct nlattr *tb) | |
469 | { | |
470 | u32 protocols; | |
471 | ||
472 | if (tb == NULL) | |
473 | return; | |
474 | ||
475 | protocols = nla_get_u32(tb); | |
476 | wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " | |
477 | "mode"); | |
478 | capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; | |
479 | capa->probe_resp_offloads = probe_resp_offload_support(protocols); | |
480 | } | |
481 | ||
482 | ||
483 | static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa, | |
484 | struct nlattr *tb) | |
485 | { | |
486 | struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1]; | |
487 | ||
488 | if (tb == NULL) | |
489 | return; | |
490 | ||
491 | if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG, | |
492 | tb, NULL)) | |
493 | return; | |
494 | ||
495 | if (triggers[NL80211_WOWLAN_TRIG_ANY]) | |
496 | capa->wowlan_triggers.any = 1; | |
497 | if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT]) | |
498 | capa->wowlan_triggers.disconnect = 1; | |
499 | if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT]) | |
500 | capa->wowlan_triggers.magic_pkt = 1; | |
501 | if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) | |
502 | capa->wowlan_triggers.gtk_rekey_failure = 1; | |
503 | if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) | |
504 | capa->wowlan_triggers.eap_identity_req = 1; | |
505 | if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) | |
506 | capa->wowlan_triggers.four_way_handshake = 1; | |
507 | if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) | |
508 | capa->wowlan_triggers.rfkill_release = 1; | |
509 | } | |
510 | ||
511 | ||
cc9a2575 KV |
512 | static void wiphy_info_extended_capab(struct wpa_driver_nl80211_data *drv, |
513 | struct nlattr *tb) | |
514 | { | |
515 | int rem = 0, i; | |
516 | struct nlattr *tb1[NL80211_ATTR_MAX + 1], *attr; | |
517 | ||
518 | if (!tb || drv->num_iface_ext_capa == NL80211_IFTYPE_MAX) | |
519 | return; | |
520 | ||
521 | nla_for_each_nested(attr, tb, rem) { | |
522 | unsigned int len; | |
523 | struct drv_nl80211_ext_capa *capa; | |
524 | ||
525 | nla_parse(tb1, NL80211_ATTR_MAX, nla_data(attr), | |
526 | nla_len(attr), NULL); | |
527 | ||
528 | if (!tb1[NL80211_ATTR_IFTYPE] || | |
529 | !tb1[NL80211_ATTR_EXT_CAPA] || | |
530 | !tb1[NL80211_ATTR_EXT_CAPA_MASK]) | |
531 | continue; | |
532 | ||
533 | capa = &drv->iface_ext_capa[drv->num_iface_ext_capa]; | |
534 | capa->iftype = nla_get_u32(tb1[NL80211_ATTR_IFTYPE]); | |
535 | wpa_printf(MSG_DEBUG, | |
536 | "nl80211: Driver-advertised extended capabilities for interface type %s", | |
537 | nl80211_iftype_str(capa->iftype)); | |
538 | ||
539 | len = nla_len(tb1[NL80211_ATTR_EXT_CAPA]); | |
540 | capa->ext_capa = os_malloc(len); | |
541 | if (!capa->ext_capa) | |
542 | goto err; | |
543 | ||
544 | os_memcpy(capa->ext_capa, nla_data(tb1[NL80211_ATTR_EXT_CAPA]), | |
545 | len); | |
546 | capa->ext_capa_len = len; | |
547 | wpa_hexdump(MSG_DEBUG, "nl80211: Extended capabilities", | |
548 | capa->ext_capa, capa->ext_capa_len); | |
549 | ||
550 | len = nla_len(tb1[NL80211_ATTR_EXT_CAPA_MASK]); | |
551 | capa->ext_capa_mask = os_malloc(len); | |
552 | if (!capa->ext_capa_mask) | |
553 | goto err; | |
554 | ||
555 | os_memcpy(capa->ext_capa_mask, | |
556 | nla_data(tb1[NL80211_ATTR_EXT_CAPA_MASK]), len); | |
557 | wpa_hexdump(MSG_DEBUG, "nl80211: Extended capabilities mask", | |
558 | capa->ext_capa_mask, capa->ext_capa_len); | |
559 | ||
560 | drv->num_iface_ext_capa++; | |
561 | if (drv->num_iface_ext_capa == NL80211_IFTYPE_MAX) | |
562 | break; | |
563 | } | |
564 | ||
565 | return; | |
566 | ||
567 | err: | |
568 | /* Cleanup allocated memory on error */ | |
569 | for (i = 0; i < NL80211_IFTYPE_MAX; i++) { | |
570 | os_free(drv->iface_ext_capa[i].ext_capa); | |
571 | drv->iface_ext_capa[i].ext_capa = NULL; | |
572 | os_free(drv->iface_ext_capa[i].ext_capa_mask); | |
573 | drv->iface_ext_capa[i].ext_capa_mask = NULL; | |
574 | drv->iface_ext_capa[i].ext_capa_len = 0; | |
575 | } | |
576 | drv->num_iface_ext_capa = 0; | |
577 | } | |
578 | ||
579 | ||
0fafeb54 JM |
580 | static int wiphy_info_handler(struct nl_msg *msg, void *arg) |
581 | { | |
582 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
583 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
584 | struct wiphy_info_data *info = arg; | |
585 | struct wpa_driver_capa *capa = info->capa; | |
586 | struct wpa_driver_nl80211_data *drv = info->drv; | |
587 | ||
588 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
589 | genlmsg_attrlen(gnlh, 0), NULL); | |
590 | ||
0e92fb8f JB |
591 | if (tb[NL80211_ATTR_WIPHY]) |
592 | drv->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); | |
593 | ||
0fafeb54 JM |
594 | if (tb[NL80211_ATTR_WIPHY_NAME]) |
595 | os_strlcpy(drv->phyname, | |
596 | nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]), | |
597 | sizeof(drv->phyname)); | |
598 | if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) | |
599 | capa->max_scan_ssids = | |
600 | nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); | |
601 | ||
602 | if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) | |
603 | capa->max_sched_scan_ssids = | |
604 | nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); | |
605 | ||
09ea4309 AS |
606 | if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS] && |
607 | tb[NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL] && | |
608 | tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]) { | |
609 | capa->max_sched_scan_plans = | |
610 | nla_get_u32(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS]); | |
611 | ||
612 | capa->max_sched_scan_plan_interval = | |
613 | nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL]); | |
614 | ||
615 | capa->max_sched_scan_plan_iterations = | |
616 | nla_get_u32(tb[NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS]); | |
617 | } | |
618 | ||
0fafeb54 JM |
619 | if (tb[NL80211_ATTR_MAX_MATCH_SETS]) |
620 | capa->max_match_sets = | |
621 | nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); | |
622 | ||
623 | if (tb[NL80211_ATTR_MAC_ACL_MAX]) | |
624 | capa->max_acl_mac_addrs = | |
625 | nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]); | |
626 | ||
627 | wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); | |
628 | wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); | |
629 | wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); | |
630 | wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]); | |
631 | ||
632 | if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { | |
633 | wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " | |
634 | "off-channel TX"); | |
635 | capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; | |
636 | } | |
637 | ||
638 | if (tb[NL80211_ATTR_ROAM_SUPPORT]) { | |
639 | wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); | |
640 | capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; | |
641 | } | |
642 | ||
643 | wiphy_info_max_roc(capa, | |
644 | tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); | |
645 | ||
646 | if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) | |
647 | capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; | |
648 | ||
649 | wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], | |
650 | tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); | |
651 | ||
652 | if (tb[NL80211_ATTR_DEVICE_AP_SME]) | |
653 | info->device_ap_sme = 1; | |
654 | ||
655 | wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); | |
4acdc48a | 656 | wiphy_info_ext_feature_flags(info, tb[NL80211_ATTR_EXT_FEATURES]); |
0fafeb54 JM |
657 | wiphy_info_probe_resp_offload(capa, |
658 | tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); | |
659 | ||
660 | if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && | |
661 | drv->extended_capa == NULL) { | |
662 | drv->extended_capa = | |
663 | os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); | |
664 | if (drv->extended_capa) { | |
665 | os_memcpy(drv->extended_capa, | |
666 | nla_data(tb[NL80211_ATTR_EXT_CAPA]), | |
667 | nla_len(tb[NL80211_ATTR_EXT_CAPA])); | |
668 | drv->extended_capa_len = | |
669 | nla_len(tb[NL80211_ATTR_EXT_CAPA]); | |
cc9a2575 KV |
670 | wpa_hexdump(MSG_DEBUG, |
671 | "nl80211: Driver-advertised extended capabilities (default)", | |
672 | drv->extended_capa, drv->extended_capa_len); | |
0fafeb54 JM |
673 | } |
674 | drv->extended_capa_mask = | |
7b7b4449 | 675 | os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK])); |
0fafeb54 JM |
676 | if (drv->extended_capa_mask) { |
677 | os_memcpy(drv->extended_capa_mask, | |
7b7b4449 LC |
678 | nla_data(tb[NL80211_ATTR_EXT_CAPA_MASK]), |
679 | nla_len(tb[NL80211_ATTR_EXT_CAPA_MASK])); | |
cc9a2575 KV |
680 | wpa_hexdump(MSG_DEBUG, |
681 | "nl80211: Driver-advertised extended capabilities mask (default)", | |
682 | drv->extended_capa_mask, | |
683 | drv->extended_capa_len); | |
0fafeb54 JM |
684 | } else { |
685 | os_free(drv->extended_capa); | |
686 | drv->extended_capa = NULL; | |
687 | drv->extended_capa_len = 0; | |
688 | } | |
689 | } | |
690 | ||
cc9a2575 KV |
691 | wiphy_info_extended_capab(drv, tb[NL80211_ATTR_IFTYPE_EXT_CAPA]); |
692 | ||
0fafeb54 JM |
693 | if (tb[NL80211_ATTR_VENDOR_DATA]) { |
694 | struct nlattr *nl; | |
695 | int rem; | |
696 | ||
697 | nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) { | |
698 | struct nl80211_vendor_cmd_info *vinfo; | |
699 | if (nla_len(nl) != sizeof(*vinfo)) { | |
700 | wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); | |
701 | continue; | |
702 | } | |
703 | vinfo = nla_data(nl); | |
5f9c92f8 ZK |
704 | if (vinfo->vendor_id == OUI_QCA) { |
705 | switch (vinfo->subcmd) { | |
706 | case QCA_NL80211_VENDOR_SUBCMD_TEST: | |
707 | drv->vendor_cmd_test_avail = 1; | |
708 | break; | |
b658547d | 709 | #ifdef CONFIG_DRIVER_NL80211_QCA |
5f9c92f8 ZK |
710 | case QCA_NL80211_VENDOR_SUBCMD_ROAMING: |
711 | drv->roaming_vendor_cmd_avail = 1; | |
712 | break; | |
713 | case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY: | |
714 | drv->dfs_vendor_cmd_avail = 1; | |
715 | break; | |
716 | case QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES: | |
717 | drv->get_features_vendor_cmd_avail = 1; | |
718 | break; | |
98342208 AK |
719 | case QCA_NL80211_VENDOR_SUBCMD_GET_PREFERRED_FREQ_LIST: |
720 | drv->get_pref_freq_list = 1; | |
721 | break; | |
7c813acf AK |
722 | case QCA_NL80211_VENDOR_SUBCMD_SET_PROBABLE_OPER_CHANNEL: |
723 | drv->set_prob_oper_freq = 1; | |
724 | break; | |
5f9c92f8 ZK |
725 | case QCA_NL80211_VENDOR_SUBCMD_DO_ACS: |
726 | drv->capa.flags |= | |
727 | WPA_DRIVER_FLAGS_ACS_OFFLOAD; | |
728 | break; | |
844dfeb8 SD |
729 | case QCA_NL80211_VENDOR_SUBCMD_SETBAND: |
730 | drv->setband_vendor_cmd_avail = 1; | |
731 | break; | |
f22a080c KV |
732 | case QCA_NL80211_VENDOR_SUBCMD_TRIGGER_SCAN: |
733 | drv->scan_vendor_cmd_avail = 1; | |
734 | break; | |
cc9985d1 | 735 | case QCA_NL80211_VENDOR_SUBCMD_SET_WIFI_CONFIGURATION: |
736 | drv->set_wifi_conf_vendor_cmd_avail = 1; | |
737 | break; | |
b658547d | 738 | #endif /* CONFIG_DRIVER_NL80211_QCA */ |
5f9c92f8 | 739 | } |
0fafeb54 JM |
740 | } |
741 | ||
742 | wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u", | |
743 | vinfo->vendor_id, vinfo->subcmd); | |
744 | } | |
745 | } | |
746 | ||
747 | if (tb[NL80211_ATTR_VENDOR_EVENTS]) { | |
748 | struct nlattr *nl; | |
749 | int rem; | |
750 | ||
751 | nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) { | |
752 | struct nl80211_vendor_cmd_info *vinfo; | |
753 | if (nla_len(nl) != sizeof(*vinfo)) { | |
754 | wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); | |
755 | continue; | |
756 | } | |
757 | vinfo = nla_data(nl); | |
0fafeb54 JM |
758 | wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u", |
759 | vinfo->vendor_id, vinfo->subcmd); | |
760 | } | |
761 | } | |
762 | ||
763 | wiphy_info_wowlan_triggers(capa, | |
764 | tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]); | |
765 | ||
766 | if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA]) | |
767 | capa->max_stations = | |
768 | nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]); | |
769 | ||
366179d2 AO |
770 | if (tb[NL80211_ATTR_MAX_CSA_COUNTERS]) |
771 | capa->max_csa_counters = | |
772 | nla_get_u8(tb[NL80211_ATTR_MAX_CSA_COUNTERS]); | |
773 | ||
0fafeb54 JM |
774 | return NL_SKIP; |
775 | } | |
776 | ||
777 | ||
778 | static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, | |
779 | struct wiphy_info_data *info) | |
780 | { | |
781 | u32 feat; | |
782 | struct nl_msg *msg; | |
9589a91e | 783 | int flags = 0; |
0fafeb54 JM |
784 | |
785 | os_memset(info, 0, sizeof(*info)); | |
786 | info->capa = &drv->capa; | |
787 | info->drv = drv; | |
788 | ||
0fafeb54 JM |
789 | feat = get_nl80211_protocol_features(drv); |
790 | if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) | |
9589a91e | 791 | flags = NLM_F_DUMP; |
56f77852 JM |
792 | msg = nl80211_cmd_msg(drv->first_bss, flags, NL80211_CMD_GET_WIPHY); |
793 | if (!msg || nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { | |
9589a91e JM |
794 | nlmsg_free(msg); |
795 | return -1; | |
796 | } | |
0fafeb54 JM |
797 | |
798 | if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) | |
799 | return -1; | |
800 | ||
801 | if (info->auth_supported) | |
802 | drv->capa.flags |= WPA_DRIVER_FLAGS_SME; | |
803 | else if (!info->connect_supported) { | |
804 | wpa_printf(MSG_INFO, "nl80211: Driver does not support " | |
805 | "authentication/association or connect commands"); | |
806 | info->error = 1; | |
807 | } | |
808 | ||
809 | if (info->p2p_go_supported && info->p2p_client_supported) | |
810 | drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; | |
811 | if (info->p2p_concurrent) { | |
812 | wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " | |
813 | "interface (driver advertised support)"); | |
814 | drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; | |
815 | drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; | |
816 | } | |
817 | if (info->num_multichan_concurrent > 1) { | |
818 | wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " | |
819 | "concurrent (driver advertised support)"); | |
820 | drv->capa.num_multichan_concurrent = | |
821 | info->num_multichan_concurrent; | |
822 | } | |
823 | if (drv->capa.flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) | |
824 | wpa_printf(MSG_DEBUG, "nl80211: use P2P_DEVICE support"); | |
825 | ||
826 | /* default to 5000 since early versions of mac80211 don't set it */ | |
827 | if (!drv->capa.max_remain_on_chan) | |
828 | drv->capa.max_remain_on_chan = 5000; | |
829 | ||
dfa87878 | 830 | drv->capa.wmm_ac_supported = info->wmm_ac_supported; |
0fafeb54 | 831 | |
86056fea IP |
832 | drv->capa.mac_addr_rand_sched_scan_supported = |
833 | info->mac_addr_rand_sched_scan_supported; | |
834 | drv->capa.mac_addr_rand_scan_supported = | |
835 | info->mac_addr_rand_scan_supported; | |
836 | ||
366179d2 AO |
837 | if (info->channel_switch_supported) { |
838 | drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA; | |
839 | if (!drv->capa.max_csa_counters) | |
840 | drv->capa.max_csa_counters = 1; | |
841 | } | |
842 | ||
09ea4309 AS |
843 | if (!drv->capa.max_sched_scan_plans) { |
844 | drv->capa.max_sched_scan_plans = 1; | |
845 | drv->capa.max_sched_scan_plan_interval = UINT32_MAX; | |
846 | drv->capa.max_sched_scan_plan_iterations = 0; | |
847 | } | |
848 | ||
0fafeb54 | 849 | return 0; |
0fafeb54 JM |
850 | } |
851 | ||
852 | ||
b658547d JM |
853 | #ifdef CONFIG_DRIVER_NL80211_QCA |
854 | ||
0fafeb54 JM |
855 | static int dfs_info_handler(struct nl_msg *msg, void *arg) |
856 | { | |
857 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
858 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
859 | int *dfs_capability_ptr = arg; | |
860 | ||
861 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
862 | genlmsg_attrlen(gnlh, 0), NULL); | |
863 | ||
864 | if (tb[NL80211_ATTR_VENDOR_DATA]) { | |
865 | struct nlattr *nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; | |
866 | struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; | |
867 | ||
868 | nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, | |
869 | nla_data(nl_vend), nla_len(nl_vend), NULL); | |
870 | ||
871 | if (tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]) { | |
872 | u32 val; | |
873 | val = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_DFS]); | |
874 | wpa_printf(MSG_DEBUG, "nl80211: DFS offload capability: %u", | |
875 | val); | |
876 | *dfs_capability_ptr = val; | |
877 | } | |
878 | } | |
879 | ||
880 | return NL_SKIP; | |
881 | } | |
882 | ||
883 | ||
884 | static void qca_nl80211_check_dfs_capa(struct wpa_driver_nl80211_data *drv) | |
885 | { | |
886 | struct nl_msg *msg; | |
887 | int dfs_capability = 0; | |
888 | int ret; | |
889 | ||
890 | if (!drv->dfs_vendor_cmd_avail) | |
891 | return; | |
892 | ||
9725b784 | 893 | if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || |
9589a91e JM |
894 | nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || |
895 | nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, | |
896 | QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY)) { | |
897 | nlmsg_free(msg); | |
898 | return; | |
899 | } | |
0fafeb54 JM |
900 | |
901 | ret = send_and_recv_msgs(drv, msg, dfs_info_handler, &dfs_capability); | |
902 | if (!ret && dfs_capability) | |
903 | drv->capa.flags |= WPA_DRIVER_FLAGS_DFS_OFFLOAD; | |
0fafeb54 JM |
904 | } |
905 | ||
906 | ||
15badebd CL |
907 | struct features_info { |
908 | u8 *flags; | |
909 | size_t flags_len; | |
079a28f7 | 910 | struct wpa_driver_capa *capa; |
15badebd CL |
911 | }; |
912 | ||
913 | ||
914 | static int features_info_handler(struct nl_msg *msg, void *arg) | |
915 | { | |
916 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
917 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
918 | struct features_info *info = arg; | |
919 | struct nlattr *nl_vend, *attr; | |
920 | ||
921 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
922 | genlmsg_attrlen(gnlh, 0), NULL); | |
923 | ||
924 | nl_vend = tb[NL80211_ATTR_VENDOR_DATA]; | |
925 | if (nl_vend) { | |
926 | struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1]; | |
927 | ||
928 | nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX, | |
929 | nla_data(nl_vend), nla_len(nl_vend), NULL); | |
930 | ||
931 | attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_FEATURE_FLAGS]; | |
932 | if (attr) { | |
fdc1188a PS |
933 | int len = nla_len(attr); |
934 | info->flags = os_malloc(len); | |
935 | if (info->flags != NULL) { | |
936 | os_memcpy(info->flags, nla_data(attr), len); | |
937 | info->flags_len = len; | |
938 | } | |
15badebd | 939 | } |
079a28f7 AK |
940 | attr = tb_vendor[QCA_WLAN_VENDOR_ATTR_CONCURRENCY_CAPA]; |
941 | if (attr) | |
942 | info->capa->conc_capab = nla_get_u32(attr); | |
943 | ||
944 | attr = tb_vendor[ | |
945 | QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_2_4_BAND]; | |
946 | if (attr) | |
947 | info->capa->max_conc_chan_2_4 = nla_get_u32(attr); | |
948 | ||
949 | attr = tb_vendor[ | |
950 | QCA_WLAN_VENDOR_ATTR_MAX_CONCURRENT_CHANNELS_5_0_BAND]; | |
951 | if (attr) | |
952 | info->capa->max_conc_chan_5_0 = nla_get_u32(attr); | |
15badebd CL |
953 | } |
954 | ||
955 | return NL_SKIP; | |
956 | } | |
957 | ||
958 | ||
959 | static int check_feature(enum qca_wlan_vendor_features feature, | |
960 | struct features_info *info) | |
961 | { | |
49e3eea8 | 962 | size_t idx = feature / 8; |
15badebd | 963 | |
49e3eea8 JM |
964 | return (idx < info->flags_len) && |
965 | (info->flags[idx] & BIT(feature % 8)); | |
15badebd CL |
966 | } |
967 | ||
968 | ||
969 | static void qca_nl80211_get_features(struct wpa_driver_nl80211_data *drv) | |
970 | { | |
971 | struct nl_msg *msg; | |
972 | struct features_info info; | |
973 | int ret; | |
974 | ||
975 | if (!drv->get_features_vendor_cmd_avail) | |
976 | return; | |
977 | ||
978 | if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) || | |
979 | nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) || | |
980 | nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD, | |
981 | QCA_NL80211_VENDOR_SUBCMD_GET_FEATURES)) { | |
982 | nlmsg_free(msg); | |
983 | return; | |
984 | } | |
985 | ||
986 | os_memset(&info, 0, sizeof(info)); | |
079a28f7 | 987 | info.capa = &drv->capa; |
15badebd CL |
988 | ret = send_and_recv_msgs(drv, msg, features_info_handler, &info); |
989 | if (ret || !info.flags) | |
990 | return; | |
991 | ||
992 | if (check_feature(QCA_WLAN_VENDOR_FEATURE_KEY_MGMT_OFFLOAD, &info)) | |
993 | drv->capa.flags |= WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD; | |
3784c058 PX |
994 | |
995 | if (check_feature(QCA_WLAN_VENDOR_FEATURE_SUPPORT_HW_MODE_ANY, &info)) | |
996 | drv->capa.flags |= WPA_DRIVER_FLAGS_SUPPORT_HW_MODE_ANY; | |
8e509745 KV |
997 | |
998 | if (check_feature(QCA_WLAN_VENDOR_FEATURE_OFFCHANNEL_SIMULTANEOUS, | |
999 | &info)) | |
1000 | drv->capa.flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS; | |
a6f5b193 PX |
1001 | if (check_feature(QCA_WLAN_VENDOR_FEATURE_P2P_LISTEN_OFFLOAD, &info)) |
1002 | drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD; | |
fdc1188a | 1003 | os_free(info.flags); |
15badebd CL |
1004 | } |
1005 | ||
b658547d JM |
1006 | #endif /* CONFIG_DRIVER_NL80211_QCA */ |
1007 | ||
15badebd | 1008 | |
0fafeb54 JM |
1009 | int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) |
1010 | { | |
1011 | struct wiphy_info_data info; | |
1012 | if (wpa_driver_nl80211_get_info(drv, &info)) | |
1013 | return -1; | |
1014 | ||
1015 | if (info.error) | |
1016 | return -1; | |
1017 | ||
1018 | drv->has_capability = 1; | |
1019 | drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | | |
1020 | WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | | |
1021 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | | |
399e6135 JM |
1022 | WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK | |
1023 | WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B | | |
1024 | WPA_DRIVER_CAPA_KEY_MGMT_SUITE_B_192; | |
0fafeb54 JM |
1025 | drv->capa.auth = WPA_DRIVER_AUTH_OPEN | |
1026 | WPA_DRIVER_AUTH_SHARED | | |
1027 | WPA_DRIVER_AUTH_LEAP; | |
1028 | ||
1029 | drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; | |
1030 | drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; | |
1031 | drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; | |
1032 | ||
1033 | /* | |
1034 | * As all cfg80211 drivers must support cases where the AP interface is | |
1035 | * removed without the knowledge of wpa_supplicant/hostapd, e.g., in | |
1036 | * case that the user space daemon has crashed, they must be able to | |
1037 | * cleanup all stations and key entries in the AP tear down flow. Thus, | |
1038 | * this flag can/should always be set for cfg80211 drivers. | |
1039 | */ | |
1040 | drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT; | |
1041 | ||
1042 | if (!info.device_ap_sme) { | |
1043 | drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; | |
1044 | ||
1045 | /* | |
1046 | * No AP SME is currently assumed to also indicate no AP MLME | |
1047 | * in the driver/firmware. | |
1048 | */ | |
1049 | drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; | |
1050 | } | |
1051 | ||
1052 | drv->device_ap_sme = info.device_ap_sme; | |
1053 | drv->poll_command_supported = info.poll_command_supported; | |
1054 | drv->data_tx_status = info.data_tx_status; | |
abb8d08b | 1055 | drv->p2p_go_ctwindow_supported = info.p2p_go_ctwindow_supported; |
0fafeb54 JM |
1056 | if (info.set_qos_map_supported) |
1057 | drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING; | |
1058 | drv->have_low_prio_scan = info.have_low_prio_scan; | |
1059 | ||
1060 | /* | |
1061 | * If poll command and tx status are supported, mac80211 is new enough | |
1062 | * to have everything we need to not need monitor interfaces. | |
1063 | */ | |
660103ec SD |
1064 | drv->use_monitor = !info.device_ap_sme && |
1065 | (!info.poll_command_supported || !info.data_tx_status); | |
0fafeb54 JM |
1066 | |
1067 | /* | |
1068 | * If we aren't going to use monitor interfaces, but the | |
1069 | * driver doesn't support data TX status, we won't get TX | |
1070 | * status for EAPOL frames. | |
1071 | */ | |
1072 | if (!drv->use_monitor && !info.data_tx_status) | |
1073 | drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; | |
1074 | ||
b658547d | 1075 | #ifdef CONFIG_DRIVER_NL80211_QCA |
0fafeb54 | 1076 | qca_nl80211_check_dfs_capa(drv); |
15badebd | 1077 | qca_nl80211_get_features(drv); |
0fafeb54 | 1078 | |
8e509745 KV |
1079 | /* |
1080 | * To enable offchannel simultaneous support in wpa_supplicant, the | |
1081 | * underlying driver needs to support the same along with offchannel TX. | |
1082 | * Offchannel TX support is needed since remain_on_channel and | |
1083 | * action_tx use some common data structures and hence cannot be | |
1084 | * scheduled simultaneously. | |
1085 | */ | |
1086 | if (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX)) | |
1087 | drv->capa.flags &= ~WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS; | |
b658547d | 1088 | #endif /* CONFIG_DRIVER_NL80211_QCA */ |
8e509745 | 1089 | |
0fafeb54 JM |
1090 | return 0; |
1091 | } | |
1092 | ||
1093 | ||
1094 | struct phy_info_arg { | |
1095 | u16 *num_modes; | |
1096 | struct hostapd_hw_modes *modes; | |
1097 | int last_mode, last_chan_idx; | |
747ba106 | 1098 | int failed; |
0fafeb54 JM |
1099 | }; |
1100 | ||
1101 | static void phy_info_ht_capa(struct hostapd_hw_modes *mode, struct nlattr *capa, | |
1102 | struct nlattr *ampdu_factor, | |
1103 | struct nlattr *ampdu_density, | |
1104 | struct nlattr *mcs_set) | |
1105 | { | |
1106 | if (capa) | |
1107 | mode->ht_capab = nla_get_u16(capa); | |
1108 | ||
1109 | if (ampdu_factor) | |
1110 | mode->a_mpdu_params |= nla_get_u8(ampdu_factor) & 0x03; | |
1111 | ||
1112 | if (ampdu_density) | |
1113 | mode->a_mpdu_params |= nla_get_u8(ampdu_density) << 2; | |
1114 | ||
1115 | if (mcs_set && nla_len(mcs_set) >= 16) { | |
1116 | u8 *mcs; | |
1117 | mcs = nla_data(mcs_set); | |
1118 | os_memcpy(mode->mcs_set, mcs, 16); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | ||
1123 | static void phy_info_vht_capa(struct hostapd_hw_modes *mode, | |
1124 | struct nlattr *capa, | |
1125 | struct nlattr *mcs_set) | |
1126 | { | |
1127 | if (capa) | |
1128 | mode->vht_capab = nla_get_u32(capa); | |
1129 | ||
1130 | if (mcs_set && nla_len(mcs_set) >= 8) { | |
1131 | u8 *mcs; | |
1132 | mcs = nla_data(mcs_set); | |
1133 | os_memcpy(mode->vht_mcs_set, mcs, 8); | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | ||
1138 | static void phy_info_freq(struct hostapd_hw_modes *mode, | |
1139 | struct hostapd_channel_data *chan, | |
1140 | struct nlattr *tb_freq[]) | |
1141 | { | |
1142 | u8 channel; | |
1143 | chan->freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]); | |
1144 | chan->flag = 0; | |
1145 | chan->dfs_cac_ms = 0; | |
1146 | if (ieee80211_freq_to_chan(chan->freq, &channel) != NUM_HOSTAPD_MODES) | |
1147 | chan->chan = channel; | |
1148 | ||
1149 | if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED]) | |
1150 | chan->flag |= HOSTAPD_CHAN_DISABLED; | |
1151 | if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IR]) | |
1152 | chan->flag |= HOSTAPD_CHAN_NO_IR; | |
1153 | if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR]) | |
1154 | chan->flag |= HOSTAPD_CHAN_RADAR; | |
1155 | if (tb_freq[NL80211_FREQUENCY_ATTR_INDOOR_ONLY]) | |
1156 | chan->flag |= HOSTAPD_CHAN_INDOOR_ONLY; | |
1157 | if (tb_freq[NL80211_FREQUENCY_ATTR_GO_CONCURRENT]) | |
1158 | chan->flag |= HOSTAPD_CHAN_GO_CONCURRENT; | |
1159 | ||
1160 | if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]) { | |
1161 | enum nl80211_dfs_state state = | |
1162 | nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_DFS_STATE]); | |
1163 | ||
1164 | switch (state) { | |
1165 | case NL80211_DFS_USABLE: | |
1166 | chan->flag |= HOSTAPD_CHAN_DFS_USABLE; | |
1167 | break; | |
1168 | case NL80211_DFS_AVAILABLE: | |
1169 | chan->flag |= HOSTAPD_CHAN_DFS_AVAILABLE; | |
1170 | break; | |
1171 | case NL80211_DFS_UNAVAILABLE: | |
1172 | chan->flag |= HOSTAPD_CHAN_DFS_UNAVAILABLE; | |
1173 | break; | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | if (tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]) { | |
1178 | chan->dfs_cac_ms = nla_get_u32( | |
1179 | tb_freq[NL80211_FREQUENCY_ATTR_DFS_CAC_TIME]); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | ||
1184 | static int phy_info_freqs(struct phy_info_arg *phy_info, | |
1185 | struct hostapd_hw_modes *mode, struct nlattr *tb) | |
1186 | { | |
1187 | static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { | |
1188 | [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, | |
1189 | [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, | |
1190 | [NL80211_FREQUENCY_ATTR_NO_IR] = { .type = NLA_FLAG }, | |
1191 | [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, | |
1192 | [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, | |
1193 | [NL80211_FREQUENCY_ATTR_DFS_STATE] = { .type = NLA_U32 }, | |
1194 | }; | |
1195 | int new_channels = 0; | |
1196 | struct hostapd_channel_data *channel; | |
1197 | struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1]; | |
1198 | struct nlattr *nl_freq; | |
1199 | int rem_freq, idx; | |
1200 | ||
1201 | if (tb == NULL) | |
1202 | return NL_OK; | |
1203 | ||
1204 | nla_for_each_nested(nl_freq, tb, rem_freq) { | |
1205 | nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, | |
1206 | nla_data(nl_freq), nla_len(nl_freq), freq_policy); | |
1207 | if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) | |
1208 | continue; | |
1209 | new_channels++; | |
1210 | } | |
1211 | ||
1212 | channel = os_realloc_array(mode->channels, | |
1213 | mode->num_channels + new_channels, | |
1214 | sizeof(struct hostapd_channel_data)); | |
1215 | if (!channel) | |
747ba106 | 1216 | return NL_STOP; |
0fafeb54 JM |
1217 | |
1218 | mode->channels = channel; | |
1219 | mode->num_channels += new_channels; | |
1220 | ||
1221 | idx = phy_info->last_chan_idx; | |
1222 | ||
1223 | nla_for_each_nested(nl_freq, tb, rem_freq) { | |
1224 | nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, | |
1225 | nla_data(nl_freq), nla_len(nl_freq), freq_policy); | |
1226 | if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ]) | |
1227 | continue; | |
1228 | phy_info_freq(mode, &mode->channels[idx], tb_freq); | |
1229 | idx++; | |
1230 | } | |
1231 | phy_info->last_chan_idx = idx; | |
1232 | ||
1233 | return NL_OK; | |
1234 | } | |
1235 | ||
1236 | ||
1237 | static int phy_info_rates(struct hostapd_hw_modes *mode, struct nlattr *tb) | |
1238 | { | |
1239 | static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = { | |
1240 | [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 }, | |
1241 | [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = | |
1242 | { .type = NLA_FLAG }, | |
1243 | }; | |
1244 | struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1]; | |
1245 | struct nlattr *nl_rate; | |
1246 | int rem_rate, idx; | |
1247 | ||
1248 | if (tb == NULL) | |
1249 | return NL_OK; | |
1250 | ||
1251 | nla_for_each_nested(nl_rate, tb, rem_rate) { | |
1252 | nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, | |
1253 | nla_data(nl_rate), nla_len(nl_rate), | |
1254 | rate_policy); | |
1255 | if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) | |
1256 | continue; | |
1257 | mode->num_rates++; | |
1258 | } | |
1259 | ||
1260 | mode->rates = os_calloc(mode->num_rates, sizeof(int)); | |
1261 | if (!mode->rates) | |
747ba106 | 1262 | return NL_STOP; |
0fafeb54 JM |
1263 | |
1264 | idx = 0; | |
1265 | ||
1266 | nla_for_each_nested(nl_rate, tb, rem_rate) { | |
1267 | nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, | |
1268 | nla_data(nl_rate), nla_len(nl_rate), | |
1269 | rate_policy); | |
1270 | if (!tb_rate[NL80211_BITRATE_ATTR_RATE]) | |
1271 | continue; | |
1272 | mode->rates[idx] = nla_get_u32( | |
1273 | tb_rate[NL80211_BITRATE_ATTR_RATE]); | |
1274 | idx++; | |
1275 | } | |
1276 | ||
1277 | return NL_OK; | |
1278 | } | |
1279 | ||
1280 | ||
1281 | static int phy_info_band(struct phy_info_arg *phy_info, struct nlattr *nl_band) | |
1282 | { | |
1283 | struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1]; | |
1284 | struct hostapd_hw_modes *mode; | |
1285 | int ret; | |
1286 | ||
1287 | if (phy_info->last_mode != nl_band->nla_type) { | |
1288 | mode = os_realloc_array(phy_info->modes, | |
1289 | *phy_info->num_modes + 1, | |
1290 | sizeof(*mode)); | |
747ba106 JM |
1291 | if (!mode) { |
1292 | phy_info->failed = 1; | |
1293 | return NL_STOP; | |
1294 | } | |
0fafeb54 JM |
1295 | phy_info->modes = mode; |
1296 | ||
1297 | mode = &phy_info->modes[*(phy_info->num_modes)]; | |
1298 | os_memset(mode, 0, sizeof(*mode)); | |
1299 | mode->mode = NUM_HOSTAPD_MODES; | |
1300 | mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN | | |
1301 | HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN; | |
1302 | ||
1303 | /* | |
1304 | * Unsupported VHT MCS stream is defined as value 3, so the VHT | |
1305 | * MCS RX/TX map must be initialized with 0xffff to mark all 8 | |
1306 | * possible streams as unsupported. This will be overridden if | |
1307 | * driver advertises VHT support. | |
1308 | */ | |
1309 | mode->vht_mcs_set[0] = 0xff; | |
1310 | mode->vht_mcs_set[1] = 0xff; | |
1311 | mode->vht_mcs_set[4] = 0xff; | |
1312 | mode->vht_mcs_set[5] = 0xff; | |
1313 | ||
1314 | *(phy_info->num_modes) += 1; | |
1315 | phy_info->last_mode = nl_band->nla_type; | |
1316 | phy_info->last_chan_idx = 0; | |
1317 | } else | |
1318 | mode = &phy_info->modes[*(phy_info->num_modes) - 1]; | |
1319 | ||
1320 | nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band), | |
1321 | nla_len(nl_band), NULL); | |
1322 | ||
1323 | phy_info_ht_capa(mode, tb_band[NL80211_BAND_ATTR_HT_CAPA], | |
1324 | tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR], | |
1325 | tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY], | |
1326 | tb_band[NL80211_BAND_ATTR_HT_MCS_SET]); | |
1327 | phy_info_vht_capa(mode, tb_band[NL80211_BAND_ATTR_VHT_CAPA], | |
1328 | tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]); | |
1329 | ret = phy_info_freqs(phy_info, mode, tb_band[NL80211_BAND_ATTR_FREQS]); | |
747ba106 JM |
1330 | if (ret == NL_OK) |
1331 | ret = phy_info_rates(mode, tb_band[NL80211_BAND_ATTR_RATES]); | |
1332 | if (ret != NL_OK) { | |
1333 | phy_info->failed = 1; | |
0fafeb54 | 1334 | return ret; |
747ba106 | 1335 | } |
0fafeb54 JM |
1336 | |
1337 | return NL_OK; | |
1338 | } | |
1339 | ||
1340 | ||
1341 | static int phy_info_handler(struct nl_msg *msg, void *arg) | |
1342 | { | |
1343 | struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; | |
1344 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
1345 | struct phy_info_arg *phy_info = arg; | |
1346 | struct nlattr *nl_band; | |
1347 | int rem_band; | |
1348 | ||
1349 | nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
1350 | genlmsg_attrlen(gnlh, 0), NULL); | |
1351 | ||
1352 | if (!tb_msg[NL80211_ATTR_WIPHY_BANDS]) | |
1353 | return NL_SKIP; | |
1354 | ||
1355 | nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) | |
1356 | { | |
1357 | int res = phy_info_band(phy_info, nl_band); | |
1358 | if (res != NL_OK) | |
1359 | return res; | |
1360 | } | |
1361 | ||
1362 | return NL_SKIP; | |
1363 | } | |
1364 | ||
1365 | ||
1366 | static struct hostapd_hw_modes * | |
1367 | wpa_driver_nl80211_postprocess_modes(struct hostapd_hw_modes *modes, | |
1368 | u16 *num_modes) | |
1369 | { | |
1370 | u16 m; | |
1371 | struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode; | |
1372 | int i, mode11g_idx = -1; | |
1373 | ||
1374 | /* heuristic to set up modes */ | |
1375 | for (m = 0; m < *num_modes; m++) { | |
1376 | if (!modes[m].num_channels) | |
1377 | continue; | |
1378 | if (modes[m].channels[0].freq < 4000) { | |
1379 | modes[m].mode = HOSTAPD_MODE_IEEE80211B; | |
1380 | for (i = 0; i < modes[m].num_rates; i++) { | |
1381 | if (modes[m].rates[i] > 200) { | |
1382 | modes[m].mode = HOSTAPD_MODE_IEEE80211G; | |
1383 | break; | |
1384 | } | |
1385 | } | |
1386 | } else if (modes[m].channels[0].freq > 50000) | |
1387 | modes[m].mode = HOSTAPD_MODE_IEEE80211AD; | |
1388 | else | |
1389 | modes[m].mode = HOSTAPD_MODE_IEEE80211A; | |
1390 | } | |
1391 | ||
1392 | /* If only 802.11g mode is included, use it to construct matching | |
1393 | * 802.11b mode data. */ | |
1394 | ||
1395 | for (m = 0; m < *num_modes; m++) { | |
1396 | if (modes[m].mode == HOSTAPD_MODE_IEEE80211B) | |
1397 | return modes; /* 802.11b already included */ | |
1398 | if (modes[m].mode == HOSTAPD_MODE_IEEE80211G) | |
1399 | mode11g_idx = m; | |
1400 | } | |
1401 | ||
1402 | if (mode11g_idx < 0) | |
1403 | return modes; /* 2.4 GHz band not supported at all */ | |
1404 | ||
1405 | nmodes = os_realloc_array(modes, *num_modes + 1, sizeof(*nmodes)); | |
1406 | if (nmodes == NULL) | |
1407 | return modes; /* Could not add 802.11b mode */ | |
1408 | ||
1409 | mode = &nmodes[*num_modes]; | |
1410 | os_memset(mode, 0, sizeof(*mode)); | |
1411 | (*num_modes)++; | |
1412 | modes = nmodes; | |
1413 | ||
1414 | mode->mode = HOSTAPD_MODE_IEEE80211B; | |
1415 | ||
1416 | mode11g = &modes[mode11g_idx]; | |
1417 | mode->num_channels = mode11g->num_channels; | |
1418 | mode->channels = os_malloc(mode11g->num_channels * | |
1419 | sizeof(struct hostapd_channel_data)); | |
1420 | if (mode->channels == NULL) { | |
1421 | (*num_modes)--; | |
1422 | return modes; /* Could not add 802.11b mode */ | |
1423 | } | |
1424 | os_memcpy(mode->channels, mode11g->channels, | |
1425 | mode11g->num_channels * sizeof(struct hostapd_channel_data)); | |
1426 | ||
1427 | mode->num_rates = 0; | |
1428 | mode->rates = os_malloc(4 * sizeof(int)); | |
1429 | if (mode->rates == NULL) { | |
1430 | os_free(mode->channels); | |
1431 | (*num_modes)--; | |
1432 | return modes; /* Could not add 802.11b mode */ | |
1433 | } | |
1434 | ||
1435 | for (i = 0; i < mode11g->num_rates; i++) { | |
1436 | if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 && | |
1437 | mode11g->rates[i] != 55 && mode11g->rates[i] != 110) | |
1438 | continue; | |
1439 | mode->rates[mode->num_rates] = mode11g->rates[i]; | |
1440 | mode->num_rates++; | |
1441 | if (mode->num_rates == 4) | |
1442 | break; | |
1443 | } | |
1444 | ||
1445 | if (mode->num_rates == 0) { | |
1446 | os_free(mode->channels); | |
1447 | os_free(mode->rates); | |
1448 | (*num_modes)--; | |
1449 | return modes; /* No 802.11b rates */ | |
1450 | } | |
1451 | ||
1452 | wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g " | |
1453 | "information"); | |
1454 | ||
1455 | return modes; | |
1456 | } | |
1457 | ||
1458 | ||
1459 | static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start, | |
1460 | int end) | |
1461 | { | |
1462 | int c; | |
1463 | ||
1464 | for (c = 0; c < mode->num_channels; c++) { | |
1465 | struct hostapd_channel_data *chan = &mode->channels[c]; | |
1466 | if (chan->freq - 10 >= start && chan->freq + 10 <= end) | |
1467 | chan->flag |= HOSTAPD_CHAN_HT40; | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | ||
1472 | static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start, | |
1473 | int end) | |
1474 | { | |
1475 | int c; | |
1476 | ||
1477 | for (c = 0; c < mode->num_channels; c++) { | |
1478 | struct hostapd_channel_data *chan = &mode->channels[c]; | |
1479 | if (!(chan->flag & HOSTAPD_CHAN_HT40)) | |
1480 | continue; | |
1481 | if (chan->freq - 30 >= start && chan->freq - 10 <= end) | |
1482 | chan->flag |= HOSTAPD_CHAN_HT40MINUS; | |
1483 | if (chan->freq + 10 >= start && chan->freq + 30 <= end) | |
1484 | chan->flag |= HOSTAPD_CHAN_HT40PLUS; | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | ||
1489 | static void nl80211_reg_rule_max_eirp(u32 start, u32 end, u32 max_eirp, | |
1490 | struct phy_info_arg *results) | |
1491 | { | |
1492 | u16 m; | |
1493 | ||
1494 | for (m = 0; m < *results->num_modes; m++) { | |
1495 | int c; | |
1496 | struct hostapd_hw_modes *mode = &results->modes[m]; | |
1497 | ||
1498 | for (c = 0; c < mode->num_channels; c++) { | |
1499 | struct hostapd_channel_data *chan = &mode->channels[c]; | |
1500 | if ((u32) chan->freq - 10 >= start && | |
1501 | (u32) chan->freq + 10 <= end) | |
1502 | chan->max_tx_power = max_eirp; | |
1503 | } | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | ||
1508 | static void nl80211_reg_rule_ht40(u32 start, u32 end, | |
1509 | struct phy_info_arg *results) | |
1510 | { | |
1511 | u16 m; | |
1512 | ||
1513 | for (m = 0; m < *results->num_modes; m++) { | |
1514 | if (!(results->modes[m].ht_capab & | |
1515 | HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1516 | continue; | |
1517 | nl80211_set_ht40_mode(&results->modes[m], start, end); | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | ||
1522 | static void nl80211_reg_rule_sec(struct nlattr *tb[], | |
1523 | struct phy_info_arg *results) | |
1524 | { | |
1525 | u32 start, end, max_bw; | |
1526 | u16 m; | |
1527 | ||
1528 | if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || | |
1529 | tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || | |
1530 | tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) | |
1531 | return; | |
1532 | ||
1533 | start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; | |
1534 | end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; | |
1535 | max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; | |
1536 | ||
1537 | if (max_bw < 20) | |
1538 | return; | |
1539 | ||
1540 | for (m = 0; m < *results->num_modes; m++) { | |
1541 | if (!(results->modes[m].ht_capab & | |
1542 | HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1543 | continue; | |
1544 | nl80211_set_ht40_mode_sec(&results->modes[m], start, end); | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | ||
1549 | static void nl80211_set_vht_mode(struct hostapd_hw_modes *mode, int start, | |
bee5d8e0 | 1550 | int end, int max_bw) |
0fafeb54 JM |
1551 | { |
1552 | int c; | |
1553 | ||
1554 | for (c = 0; c < mode->num_channels; c++) { | |
1555 | struct hostapd_channel_data *chan = &mode->channels[c]; | |
1556 | if (chan->freq - 10 >= start && chan->freq + 70 <= end) | |
1557 | chan->flag |= HOSTAPD_CHAN_VHT_10_70; | |
1558 | ||
1559 | if (chan->freq - 30 >= start && chan->freq + 50 <= end) | |
1560 | chan->flag |= HOSTAPD_CHAN_VHT_30_50; | |
1561 | ||
1562 | if (chan->freq - 50 >= start && chan->freq + 30 <= end) | |
1563 | chan->flag |= HOSTAPD_CHAN_VHT_50_30; | |
1564 | ||
1565 | if (chan->freq - 70 >= start && chan->freq + 10 <= end) | |
1566 | chan->flag |= HOSTAPD_CHAN_VHT_70_10; | |
bee5d8e0 AK |
1567 | |
1568 | if (max_bw >= 160) { | |
1569 | if (chan->freq - 10 >= start && chan->freq + 150 <= end) | |
1570 | chan->flag |= HOSTAPD_CHAN_VHT_10_150; | |
1571 | ||
1572 | if (chan->freq - 30 >= start && chan->freq + 130 <= end) | |
1573 | chan->flag |= HOSTAPD_CHAN_VHT_30_130; | |
1574 | ||
1575 | if (chan->freq - 50 >= start && chan->freq + 110 <= end) | |
1576 | chan->flag |= HOSTAPD_CHAN_VHT_50_110; | |
1577 | ||
1578 | if (chan->freq - 70 >= start && chan->freq + 90 <= end) | |
1579 | chan->flag |= HOSTAPD_CHAN_VHT_70_90; | |
1580 | ||
1581 | if (chan->freq - 90 >= start && chan->freq + 70 <= end) | |
1582 | chan->flag |= HOSTAPD_CHAN_VHT_90_70; | |
1583 | ||
1584 | if (chan->freq - 110 >= start && chan->freq + 50 <= end) | |
1585 | chan->flag |= HOSTAPD_CHAN_VHT_110_50; | |
1586 | ||
1587 | if (chan->freq - 130 >= start && chan->freq + 30 <= end) | |
1588 | chan->flag |= HOSTAPD_CHAN_VHT_130_30; | |
1589 | ||
1590 | if (chan->freq - 150 >= start && chan->freq + 10 <= end) | |
1591 | chan->flag |= HOSTAPD_CHAN_VHT_150_10; | |
1592 | } | |
0fafeb54 JM |
1593 | } |
1594 | } | |
1595 | ||
1596 | ||
1597 | static void nl80211_reg_rule_vht(struct nlattr *tb[], | |
1598 | struct phy_info_arg *results) | |
1599 | { | |
1600 | u32 start, end, max_bw; | |
1601 | u16 m; | |
1602 | ||
1603 | if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL || | |
1604 | tb[NL80211_ATTR_FREQ_RANGE_END] == NULL || | |
1605 | tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL) | |
1606 | return; | |
1607 | ||
1608 | start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000; | |
1609 | end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000; | |
1610 | max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; | |
1611 | ||
1612 | if (max_bw < 80) | |
1613 | return; | |
1614 | ||
1615 | for (m = 0; m < *results->num_modes; m++) { | |
1616 | if (!(results->modes[m].ht_capab & | |
1617 | HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1618 | continue; | |
1619 | /* TODO: use a real VHT support indication */ | |
1620 | if (!results->modes[m].vht_capab) | |
1621 | continue; | |
1622 | ||
bee5d8e0 | 1623 | nl80211_set_vht_mode(&results->modes[m], start, end, max_bw); |
0fafeb54 JM |
1624 | } |
1625 | } | |
1626 | ||
1627 | ||
1628 | static const char * dfs_domain_name(enum nl80211_dfs_regions region) | |
1629 | { | |
1630 | switch (region) { | |
1631 | case NL80211_DFS_UNSET: | |
1632 | return "DFS-UNSET"; | |
1633 | case NL80211_DFS_FCC: | |
1634 | return "DFS-FCC"; | |
1635 | case NL80211_DFS_ETSI: | |
1636 | return "DFS-ETSI"; | |
1637 | case NL80211_DFS_JP: | |
1638 | return "DFS-JP"; | |
1639 | default: | |
1640 | return "DFS-invalid"; | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | ||
1645 | static int nl80211_get_reg(struct nl_msg *msg, void *arg) | |
1646 | { | |
1647 | struct phy_info_arg *results = arg; | |
1648 | struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; | |
1649 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
1650 | struct nlattr *nl_rule; | |
1651 | struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1]; | |
1652 | int rem_rule; | |
1653 | static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { | |
1654 | [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, | |
1655 | [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, | |
1656 | [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, | |
1657 | [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, | |
1658 | [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, | |
1659 | [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, | |
1660 | }; | |
1661 | ||
1662 | nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
1663 | genlmsg_attrlen(gnlh, 0), NULL); | |
1664 | if (!tb_msg[NL80211_ATTR_REG_ALPHA2] || | |
1665 | !tb_msg[NL80211_ATTR_REG_RULES]) { | |
1666 | wpa_printf(MSG_DEBUG, "nl80211: No regulatory information " | |
1667 | "available"); | |
1668 | return NL_SKIP; | |
1669 | } | |
1670 | ||
1671 | if (tb_msg[NL80211_ATTR_DFS_REGION]) { | |
1672 | enum nl80211_dfs_regions dfs_domain; | |
1673 | dfs_domain = nla_get_u8(tb_msg[NL80211_ATTR_DFS_REGION]); | |
1674 | wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s (%s)", | |
1675 | (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), | |
1676 | dfs_domain_name(dfs_domain)); | |
1677 | } else { | |
1678 | wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s", | |
1679 | (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2])); | |
1680 | } | |
1681 | ||
1682 | nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) | |
1683 | { | |
1684 | u32 start, end, max_eirp = 0, max_bw = 0, flags = 0; | |
1685 | nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, | |
1686 | nla_data(nl_rule), nla_len(nl_rule), reg_policy); | |
1687 | if (tb_rule[NL80211_ATTR_FREQ_RANGE_START] == NULL || | |
1688 | tb_rule[NL80211_ATTR_FREQ_RANGE_END] == NULL) | |
1689 | continue; | |
1690 | start = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_START]) / 1000; | |
1691 | end = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_END]) / 1000; | |
1692 | if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
1693 | max_eirp = nla_get_u32(tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) / 100; | |
1694 | if (tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) | |
1695 | max_bw = nla_get_u32(tb_rule[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000; | |
1696 | if (tb_rule[NL80211_ATTR_REG_RULE_FLAGS]) | |
1697 | flags = nla_get_u32(tb_rule[NL80211_ATTR_REG_RULE_FLAGS]); | |
1698 | ||
1699 | wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz %u mBm%s%s%s%s%s%s%s%s", | |
1700 | start, end, max_bw, max_eirp, | |
1701 | flags & NL80211_RRF_NO_OFDM ? " (no OFDM)" : "", | |
1702 | flags & NL80211_RRF_NO_CCK ? " (no CCK)" : "", | |
1703 | flags & NL80211_RRF_NO_INDOOR ? " (no indoor)" : "", | |
1704 | flags & NL80211_RRF_NO_OUTDOOR ? " (no outdoor)" : | |
1705 | "", | |
1706 | flags & NL80211_RRF_DFS ? " (DFS)" : "", | |
1707 | flags & NL80211_RRF_PTP_ONLY ? " (PTP only)" : "", | |
1708 | flags & NL80211_RRF_PTMP_ONLY ? " (PTMP only)" : "", | |
1709 | flags & NL80211_RRF_NO_IR ? " (no IR)" : ""); | |
1710 | if (max_bw >= 40) | |
1711 | nl80211_reg_rule_ht40(start, end, results); | |
1712 | if (tb_rule[NL80211_ATTR_POWER_RULE_MAX_EIRP]) | |
1713 | nl80211_reg_rule_max_eirp(start, end, max_eirp, | |
1714 | results); | |
1715 | } | |
1716 | ||
1717 | nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) | |
1718 | { | |
1719 | nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, | |
1720 | nla_data(nl_rule), nla_len(nl_rule), reg_policy); | |
1721 | nl80211_reg_rule_sec(tb_rule, results); | |
1722 | } | |
1723 | ||
1724 | nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule) | |
1725 | { | |
1726 | nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX, | |
1727 | nla_data(nl_rule), nla_len(nl_rule), reg_policy); | |
1728 | nl80211_reg_rule_vht(tb_rule, results); | |
1729 | } | |
1730 | ||
1731 | return NL_SKIP; | |
1732 | } | |
1733 | ||
1734 | ||
1735 | static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv, | |
1736 | struct phy_info_arg *results) | |
1737 | { | |
1738 | struct nl_msg *msg; | |
1739 | ||
1740 | msg = nlmsg_alloc(); | |
1741 | if (!msg) | |
1742 | return -ENOMEM; | |
1743 | ||
1744 | nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); | |
1745 | return send_and_recv_msgs(drv, msg, nl80211_get_reg, results); | |
1746 | } | |
1747 | ||
1748 | ||
1749 | struct hostapd_hw_modes * | |
1750 | nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags) | |
1751 | { | |
1752 | u32 feat; | |
1753 | struct i802_bss *bss = priv; | |
1754 | struct wpa_driver_nl80211_data *drv = bss->drv; | |
9589a91e | 1755 | int nl_flags = 0; |
0fafeb54 JM |
1756 | struct nl_msg *msg; |
1757 | struct phy_info_arg result = { | |
1758 | .num_modes = num_modes, | |
1759 | .modes = NULL, | |
1760 | .last_mode = -1, | |
747ba106 | 1761 | .failed = 0, |
0fafeb54 JM |
1762 | }; |
1763 | ||
1764 | *num_modes = 0; | |
1765 | *flags = 0; | |
1766 | ||
0fafeb54 JM |
1767 | feat = get_nl80211_protocol_features(drv); |
1768 | if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) | |
9589a91e | 1769 | nl_flags = NLM_F_DUMP; |
56f77852 JM |
1770 | if (!(msg = nl80211_cmd_msg(bss, nl_flags, NL80211_CMD_GET_WIPHY)) || |
1771 | nla_put_flag(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP)) { | |
9589a91e JM |
1772 | nlmsg_free(msg); |
1773 | return NULL; | |
1774 | } | |
0fafeb54 JM |
1775 | |
1776 | if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) { | |
1777 | nl80211_set_regulatory_flags(drv, &result); | |
747ba106 JM |
1778 | if (result.failed) { |
1779 | int i; | |
1780 | ||
1781 | for (i = 0; result.modes && i < *num_modes; i++) { | |
1782 | os_free(result.modes[i].channels); | |
1783 | os_free(result.modes[i].rates); | |
1784 | } | |
1785 | os_free(result.modes); | |
517b5f92 | 1786 | *num_modes = 0; |
747ba106 JM |
1787 | return NULL; |
1788 | } | |
0fafeb54 JM |
1789 | return wpa_driver_nl80211_postprocess_modes(result.modes, |
1790 | num_modes); | |
1791 | } | |
9589a91e | 1792 | |
0fafeb54 JM |
1793 | return NULL; |
1794 | } |