1 /*
2 * Common driver-related functions
3 * Copyright (c) 2003-2017, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10 #include "utils/common.h"
11 #include "driver.h"
12
wpa_scan_results_free(struct wpa_scan_results * res)13 void wpa_scan_results_free(struct wpa_scan_results *res)
14 {
15 size_t i;
16
17 if (res == NULL)
18 return;
19
20 for (i = 0; i < res->num; i++)
21 os_free(res->res[i]);
22 os_free(res->res);
23 os_free(res);
24 }
25
26
event_to_string(enum wpa_event_type event)27 const char * event_to_string(enum wpa_event_type event)
28 {
29 #define E2S(n) case EVENT_ ## n: return #n
30 switch (event) {
31 E2S(ASSOC);
32 E2S(DISASSOC);
33 E2S(MICHAEL_MIC_FAILURE);
34 E2S(SCAN_RESULTS);
35 E2S(ASSOCINFO);
36 E2S(INTERFACE_STATUS);
37 E2S(PMKID_CANDIDATE);
38 E2S(TDLS);
39 E2S(FT_RESPONSE);
40 E2S(IBSS_RSN_START);
41 E2S(AUTH);
42 E2S(DEAUTH);
43 E2S(ASSOC_REJECT);
44 E2S(AUTH_TIMED_OUT);
45 E2S(ASSOC_TIMED_OUT);
46 E2S(WPS_BUTTON_PUSHED);
47 E2S(TX_STATUS);
48 E2S(RX_FROM_UNKNOWN);
49 E2S(RX_MGMT);
50 E2S(REMAIN_ON_CHANNEL);
51 E2S(CANCEL_REMAIN_ON_CHANNEL);
52 E2S(RX_PROBE_REQ);
53 E2S(NEW_STA);
54 E2S(EAPOL_RX);
55 E2S(SIGNAL_CHANGE);
56 E2S(INTERFACE_ENABLED);
57 E2S(INTERFACE_DISABLED);
58 E2S(CHANNEL_LIST_CHANGED);
59 E2S(INTERFACE_UNAVAILABLE);
60 E2S(BEST_CHANNEL);
61 E2S(UNPROT_DEAUTH);
62 E2S(UNPROT_DISASSOC);
63 E2S(STATION_LOW_ACK);
64 E2S(IBSS_PEER_LOST);
65 E2S(DRIVER_GTK_REKEY);
66 E2S(SCHED_SCAN_STOPPED);
67 E2S(DRIVER_CLIENT_POLL_OK);
68 E2S(EAPOL_TX_STATUS);
69 E2S(CH_SWITCH);
70 E2S(CH_SWITCH_STARTED);
71 E2S(WNM);
72 E2S(CONNECT_FAILED_REASON);
73 E2S(DFS_RADAR_DETECTED);
74 E2S(DFS_CAC_FINISHED);
75 E2S(DFS_CAC_ABORTED);
76 E2S(DFS_NOP_FINISHED);
77 E2S(SURVEY);
78 E2S(SCAN_STARTED);
79 E2S(AVOID_FREQUENCIES);
80 E2S(NEW_PEER_CANDIDATE);
81 E2S(ACS_CHANNEL_SELECTED);
82 E2S(DFS_CAC_STARTED);
83 E2S(P2P_LO_STOP);
84 E2S(BEACON_LOSS);
85 E2S(DFS_PRE_CAC_EXPIRED);
86 E2S(EXTERNAL_AUTH);
87 E2S(PORT_AUTHORIZED);
88 E2S(STATION_OPMODE_CHANGED);
89 E2S(INTERFACE_MAC_CHANGED);
90 E2S(WDS_STA_INTERFACE_STATUS);
91 E2S(UPDATE_DH);
92 E2S(UNPROT_BEACON);
93 E2S(TX_WAIT_EXPIRE);
94 E2S(BSS_COLOR_COLLISION);
95 E2S(CCA_STARTED_NOTIFY);
96 E2S(CCA_ABORTED_NOTIFY);
97 E2S(CCA_NOTIFY);
98 E2S(PASN_AUTH);
99 E2S(LINK_CH_SWITCH);
100 E2S(LINK_CH_SWITCH_STARTED);
101 E2S(TID_LINK_MAP);
102 E2S(LINK_RECONFIG);
103 }
104
105 return "UNKNOWN";
106 #undef E2S
107 }
108
109
channel_width_to_string(enum chan_width width)110 const char * channel_width_to_string(enum chan_width width)
111 {
112 switch (width) {
113 case CHAN_WIDTH_20_NOHT:
114 return "20 MHz (no HT)";
115 case CHAN_WIDTH_20:
116 return "20 MHz";
117 case CHAN_WIDTH_40:
118 return "40 MHz";
119 case CHAN_WIDTH_80:
120 return "80 MHz";
121 case CHAN_WIDTH_80P80:
122 return "80+80 MHz";
123 case CHAN_WIDTH_160:
124 return "160 MHz";
125 case CHAN_WIDTH_320:
126 return "320 MHz";
127 default:
128 return "unknown";
129 }
130 }
131
132
channel_width_to_int(enum chan_width width)133 int channel_width_to_int(enum chan_width width)
134 {
135 switch (width) {
136 case CHAN_WIDTH_20_NOHT:
137 case CHAN_WIDTH_20:
138 return 20;
139 case CHAN_WIDTH_40:
140 return 40;
141 case CHAN_WIDTH_80:
142 return 80;
143 case CHAN_WIDTH_80P80:
144 case CHAN_WIDTH_160:
145 return 160;
146 case CHAN_WIDTH_320:
147 return 320;
148 default:
149 return 0;
150 }
151 }
152
153
ht_supported(const struct hostapd_hw_modes * mode)154 int ht_supported(const struct hostapd_hw_modes *mode)
155 {
156 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
157 /*
158 * The driver did not indicate whether it supports HT. Assume
159 * it does to avoid connection issues.
160 */
161 return 1;
162 }
163
164 /*
165 * IEEE Std 802.11n-2009 20.1.1:
166 * An HT non-AP STA shall support all EQM rates for one spatial stream.
167 */
168 return mode->mcs_set[0] == 0xff;
169 }
170
171
vht_supported(const struct hostapd_hw_modes * mode)172 int vht_supported(const struct hostapd_hw_modes *mode)
173 {
174 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
175 /*
176 * The driver did not indicate whether it supports VHT. Assume
177 * it does to avoid connection issues.
178 */
179 return 1;
180 }
181
182 /*
183 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
184 * TODO: Verify if this complies with the standard
185 */
186 return (mode->vht_mcs_set[0] & 0x3) != 3;
187 }
188
189
he_supported(const struct hostapd_hw_modes * hw_mode,enum ieee80211_op_mode op_mode)190 bool he_supported(const struct hostapd_hw_modes *hw_mode,
191 enum ieee80211_op_mode op_mode)
192 {
193 if (!(hw_mode->flags & HOSTAPD_MODE_FLAG_HE_INFO_KNOWN)) {
194 /*
195 * The driver did not indicate whether it supports HE. Assume
196 * it does to avoid connection issues.
197 */
198 return true;
199 }
200
201 return hw_mode->he_capab[op_mode].he_supported;
202 }
203
204
wpa_check_wowlan_trigger(const char * start,const char * trigger,int capa_trigger,u8 * param_trigger)205 static int wpa_check_wowlan_trigger(const char *start, const char *trigger,
206 int capa_trigger, u8 *param_trigger)
207 {
208 if (os_strcmp(start, trigger) != 0)
209 return 0;
210 if (!capa_trigger)
211 return 0;
212
213 *param_trigger = 1;
214 return 1;
215 }
216
217
218 struct wowlan_triggers *
wpa_get_wowlan_triggers(const char * wowlan_triggers,const struct wpa_driver_capa * capa)219 wpa_get_wowlan_triggers(const char *wowlan_triggers,
220 const struct wpa_driver_capa *capa)
221 {
222 struct wowlan_triggers *triggers;
223 char *start, *end, *buf;
224 int last;
225
226 if (!wowlan_triggers)
227 return NULL;
228
229 buf = os_strdup(wowlan_triggers);
230 if (buf == NULL)
231 return NULL;
232
233 triggers = os_zalloc(sizeof(*triggers));
234 if (triggers == NULL)
235 goto out;
236
237 #define CHECK_TRIGGER(trigger) \
238 wpa_check_wowlan_trigger(start, #trigger, \
239 capa->wowlan_triggers.trigger, \
240 &triggers->trigger)
241
242 start = buf;
243 while (*start != '\0') {
244 while (isblank((unsigned char) *start))
245 start++;
246 if (*start == '\0')
247 break;
248 end = start;
249 while (!isblank((unsigned char) *end) && *end != '\0')
250 end++;
251 last = *end == '\0';
252 *end = '\0';
253
254 if (!CHECK_TRIGGER(any) &&
255 !CHECK_TRIGGER(disconnect) &&
256 !CHECK_TRIGGER(magic_pkt) &&
257 !CHECK_TRIGGER(gtk_rekey_failure) &&
258 !CHECK_TRIGGER(eap_identity_req) &&
259 !CHECK_TRIGGER(four_way_handshake) &&
260 !CHECK_TRIGGER(rfkill_release)) {
261 wpa_printf(MSG_DEBUG,
262 "Unknown/unsupported wowlan trigger '%s'",
263 start);
264 os_free(triggers);
265 triggers = NULL;
266 goto out;
267 }
268
269 if (last)
270 break;
271 start = end + 1;
272 }
273 #undef CHECK_TRIGGER
274
275 out:
276 os_free(buf);
277 return triggers;
278 }
279
280
driver_flag_to_string(u64 flag)281 const char * driver_flag_to_string(u64 flag)
282 {
283 #define DF2S(x) case WPA_DRIVER_FLAGS_ ## x: return #x
284 switch (flag) {
285 DF2S(DRIVER_IE);
286 DF2S(SET_KEYS_AFTER_ASSOC);
287 DF2S(DFS_OFFLOAD);
288 DF2S(4WAY_HANDSHAKE_PSK);
289 DF2S(4WAY_HANDSHAKE_8021X);
290 DF2S(WIRED);
291 DF2S(SME);
292 DF2S(AP);
293 DF2S(SET_KEYS_AFTER_ASSOC_DONE);
294 DF2S(HT_2040_COEX);
295 DF2S(P2P_CONCURRENT);
296 DF2S(P2P_DEDICATED_INTERFACE);
297 DF2S(P2P_CAPABLE);
298 DF2S(AP_TEARDOWN_SUPPORT);
299 DF2S(P2P_MGMT_AND_NON_P2P);
300 DF2S(VALID_ERROR_CODES);
301 DF2S(OFFCHANNEL_TX);
302 DF2S(EAPOL_TX_STATUS);
303 DF2S(DEAUTH_TX_STATUS);
304 DF2S(BSS_SELECTION);
305 DF2S(TDLS_SUPPORT);
306 DF2S(TDLS_EXTERNAL_SETUP);
307 DF2S(PROBE_RESP_OFFLOAD);
308 DF2S(AP_UAPSD);
309 DF2S(INACTIVITY_TIMER);
310 DF2S(AP_MLME);
311 DF2S(SAE);
312 DF2S(OBSS_SCAN);
313 DF2S(IBSS);
314 DF2S(RADAR);
315 DF2S(DEDICATED_P2P_DEVICE);
316 DF2S(QOS_MAPPING);
317 DF2S(AP_CSA);
318 DF2S(MESH);
319 DF2S(ACS_OFFLOAD);
320 DF2S(KEY_MGMT_OFFLOAD);
321 DF2S(TDLS_CHANNEL_SWITCH);
322 DF2S(HT_IBSS);
323 DF2S(VHT_IBSS);
324 DF2S(SUPPORT_HW_MODE_ANY);
325 DF2S(OFFCHANNEL_SIMULTANEOUS);
326 DF2S(FULL_AP_CLIENT_STATE);
327 DF2S(P2P_LISTEN_OFFLOAD);
328 DF2S(SUPPORT_FILS);
329 DF2S(BEACON_RATE_LEGACY);
330 DF2S(BEACON_RATE_HT);
331 DF2S(BEACON_RATE_VHT);
332 DF2S(MGMT_TX_RANDOM_TA);
333 DF2S(MGMT_TX_RANDOM_TA_CONNECTED);
334 DF2S(SCHED_SCAN_RELATIVE_RSSI);
335 DF2S(HE_CAPABILITIES);
336 DF2S(FILS_SK_OFFLOAD);
337 DF2S(OCE_STA);
338 DF2S(OCE_AP);
339 DF2S(OCE_STA_CFON);
340 DF2S(MFP_OPTIONAL);
341 DF2S(SELF_MANAGED_REGULATORY);
342 DF2S(FTM_RESPONDER);
343 DF2S(CONTROL_PORT);
344 DF2S(VLAN_OFFLOAD);
345 DF2S(UPDATE_FT_IES);
346 DF2S(SAFE_PTK0_REKEYS);
347 DF2S(BEACON_PROTECTION);
348 DF2S(EXTENDED_KEY_ID);
349 }
350 return "UNKNOWN";
351 #undef DF2S
352 }
353
354
driver_flag2_to_string(u64 flag2)355 const char * driver_flag2_to_string(u64 flag2)
356 {
357 #define DF2S(x) case WPA_DRIVER_FLAGS2_ ## x: return #x
358 switch (flag2) {
359 DF2S(CONTROL_PORT_RX);
360 DF2S(CONTROL_PORT_TX_STATUS);
361 DF2S(SEC_LTF_AP);
362 DF2S(SEC_RTT_AP);
363 DF2S(PROT_RANGE_NEG_AP);
364 DF2S(BEACON_RATE_HE);
365 DF2S(BEACON_PROTECTION_CLIENT);
366 DF2S(OCV);
367 DF2S(AP_SME);
368 DF2S(SA_QUERY_OFFLOAD_AP);
369 DF2S(RADAR_BACKGROUND);
370 DF2S(SEC_LTF_STA);
371 DF2S(SEC_RTT_STA);
372 DF2S(PROT_RANGE_NEG_STA);
373 DF2S(MLO);
374 DF2S(SCAN_MIN_PREQ);
375 DF2S(SAE_OFFLOAD_STA);
376 }
377 return "UNKNOWN";
378 #undef DF2S
379 }
380