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(WNM);
71 E2S(CONNECT_FAILED_REASON);
72 E2S(DFS_RADAR_DETECTED);
73 E2S(DFS_CAC_FINISHED);
74 E2S(DFS_CAC_ABORTED);
75 E2S(DFS_NOP_FINISHED);
76 E2S(SURVEY);
77 E2S(SCAN_STARTED);
78 E2S(AVOID_FREQUENCIES);
79 E2S(NEW_PEER_CANDIDATE);
80 E2S(ACS_CHANNEL_SELECTED);
81 E2S(DFS_CAC_STARTED);
82 E2S(P2P_LO_STOP);
83 E2S(BEACON_LOSS);
84 E2S(DFS_PRE_CAC_EXPIRED);
85 E2S(EXTERNAL_AUTH);
86 E2S(PORT_AUTHORIZED);
87 E2S(STATION_OPMODE_CHANGED);
88 E2S(INTERFACE_MAC_CHANGED);
89 E2S(WDS_STA_INTERFACE_STATUS);
90 }
91
92 return "UNKNOWN";
93 #undef E2S
94 }
95
96
channel_width_to_string(enum chan_width width)97 const char * channel_width_to_string(enum chan_width width)
98 {
99 switch (width) {
100 case CHAN_WIDTH_20_NOHT:
101 return "20 MHz (no HT)";
102 case CHAN_WIDTH_20:
103 return "20 MHz";
104 case CHAN_WIDTH_40:
105 return "40 MHz";
106 case CHAN_WIDTH_80:
107 return "80 MHz";
108 case CHAN_WIDTH_80P80:
109 return "80+80 MHz";
110 case CHAN_WIDTH_160:
111 return "160 MHz";
112 default:
113 return "unknown";
114 }
115 }
116
117
channel_width_to_int(enum chan_width width)118 int channel_width_to_int(enum chan_width width)
119 {
120 switch (width) {
121 case CHAN_WIDTH_20_NOHT:
122 case CHAN_WIDTH_20:
123 return 20;
124 case CHAN_WIDTH_40:
125 return 40;
126 case CHAN_WIDTH_80:
127 return 80;
128 case CHAN_WIDTH_80P80:
129 case CHAN_WIDTH_160:
130 return 160;
131 default:
132 return 0;
133 }
134 }
135
136
ht_supported(const struct hostapd_hw_modes * mode)137 int ht_supported(const struct hostapd_hw_modes *mode)
138 {
139 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
140 /*
141 * The driver did not indicate whether it supports HT. Assume
142 * it does to avoid connection issues.
143 */
144 return 1;
145 }
146
147 /*
148 * IEEE Std 802.11n-2009 20.1.1:
149 * An HT non-AP STA shall support all EQM rates for one spatial stream.
150 */
151 return mode->mcs_set[0] == 0xff;
152 }
153
154
vht_supported(const struct hostapd_hw_modes * mode)155 int vht_supported(const struct hostapd_hw_modes *mode)
156 {
157 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
158 /*
159 * The driver did not indicate whether it supports VHT. Assume
160 * it does to avoid connection issues.
161 */
162 return 1;
163 }
164
165 /*
166 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
167 * TODO: Verify if this complies with the standard
168 */
169 return (mode->vht_mcs_set[0] & 0x3) != 3;
170 }
171
172
wpa_check_wowlan_trigger(const char * start,const char * trigger,int capa_trigger,u8 * param_trigger)173 static int wpa_check_wowlan_trigger(const char *start, const char *trigger,
174 int capa_trigger, u8 *param_trigger)
175 {
176 if (os_strcmp(start, trigger) != 0)
177 return 0;
178 if (!capa_trigger)
179 return 0;
180
181 *param_trigger = 1;
182 return 1;
183 }
184
185
186 struct wowlan_triggers *
wpa_get_wowlan_triggers(const char * wowlan_triggers,const struct wpa_driver_capa * capa)187 wpa_get_wowlan_triggers(const char *wowlan_triggers,
188 const struct wpa_driver_capa *capa)
189 {
190 struct wowlan_triggers *triggers;
191 char *start, *end, *buf;
192 int last;
193
194 if (!wowlan_triggers)
195 return NULL;
196
197 buf = os_strdup(wowlan_triggers);
198 if (buf == NULL)
199 return NULL;
200
201 triggers = os_zalloc(sizeof(*triggers));
202 if (triggers == NULL)
203 goto out;
204
205 #define CHECK_TRIGGER(trigger) \
206 wpa_check_wowlan_trigger(start, #trigger, \
207 capa->wowlan_triggers.trigger, \
208 &triggers->trigger)
209
210 start = buf;
211 while (*start != '\0') {
212 while (isblank((unsigned char) *start))
213 start++;
214 if (*start == '\0')
215 break;
216 end = start;
217 while (!isblank((unsigned char) *end) && *end != '\0')
218 end++;
219 last = *end == '\0';
220 *end = '\0';
221
222 if (!CHECK_TRIGGER(any) &&
223 !CHECK_TRIGGER(disconnect) &&
224 !CHECK_TRIGGER(magic_pkt) &&
225 !CHECK_TRIGGER(gtk_rekey_failure) &&
226 !CHECK_TRIGGER(eap_identity_req) &&
227 !CHECK_TRIGGER(four_way_handshake) &&
228 !CHECK_TRIGGER(rfkill_release)) {
229 wpa_printf(MSG_DEBUG,
230 "Unknown/unsupported wowlan trigger '%s'",
231 start);
232 os_free(triggers);
233 triggers = NULL;
234 goto out;
235 }
236
237 if (last)
238 break;
239 start = end + 1;
240 }
241 #undef CHECK_TRIGGER
242
243 out:
244 os_free(buf);
245 return triggers;
246 }
247
248
driver_flag_to_string(u64 flag)249 const char * driver_flag_to_string(u64 flag)
250 {
251 #define DF2S(x) case WPA_DRIVER_FLAGS_ ## x: return #x
252 switch (flag) {
253 DF2S(DRIVER_IE);
254 DF2S(SET_KEYS_AFTER_ASSOC);
255 DF2S(DFS_OFFLOAD);
256 DF2S(4WAY_HANDSHAKE_PSK);
257 DF2S(4WAY_HANDSHAKE_8021X);
258 DF2S(WIRED);
259 DF2S(SME);
260 DF2S(AP);
261 DF2S(SET_KEYS_AFTER_ASSOC_DONE);
262 DF2S(HT_2040_COEX);
263 DF2S(P2P_CONCURRENT);
264 DF2S(P2P_DEDICATED_INTERFACE);
265 DF2S(P2P_CAPABLE);
266 DF2S(AP_TEARDOWN_SUPPORT);
267 DF2S(P2P_MGMT_AND_NON_P2P);
268 DF2S(SANE_ERROR_CODES);
269 DF2S(OFFCHANNEL_TX);
270 DF2S(EAPOL_TX_STATUS);
271 DF2S(DEAUTH_TX_STATUS);
272 DF2S(BSS_SELECTION);
273 DF2S(TDLS_SUPPORT);
274 DF2S(TDLS_EXTERNAL_SETUP);
275 DF2S(PROBE_RESP_OFFLOAD);
276 DF2S(AP_UAPSD);
277 DF2S(INACTIVITY_TIMER);
278 DF2S(AP_MLME);
279 DF2S(SAE);
280 DF2S(OBSS_SCAN);
281 DF2S(IBSS);
282 DF2S(RADAR);
283 DF2S(DEDICATED_P2P_DEVICE);
284 DF2S(QOS_MAPPING);
285 DF2S(AP_CSA);
286 DF2S(MESH);
287 DF2S(ACS_OFFLOAD);
288 DF2S(KEY_MGMT_OFFLOAD);
289 DF2S(TDLS_CHANNEL_SWITCH);
290 DF2S(HT_IBSS);
291 DF2S(VHT_IBSS);
292 DF2S(SUPPORT_HW_MODE_ANY);
293 DF2S(OFFCHANNEL_SIMULTANEOUS);
294 DF2S(FULL_AP_CLIENT_STATE);
295 DF2S(P2P_LISTEN_OFFLOAD);
296 DF2S(SUPPORT_FILS);
297 DF2S(BEACON_RATE_LEGACY);
298 DF2S(BEACON_RATE_HT);
299 DF2S(BEACON_RATE_VHT);
300 DF2S(MGMT_TX_RANDOM_TA);
301 DF2S(MGMT_TX_RANDOM_TA_CONNECTED);
302 DF2S(SCHED_SCAN_RELATIVE_RSSI);
303 DF2S(HE_CAPABILITIES);
304 DF2S(FILS_SK_OFFLOAD);
305 DF2S(OCE_STA);
306 DF2S(OCE_AP);
307 DF2S(OCE_STA_CFON);
308 DF2S(MFP_OPTIONAL);
309 }
310 return "UNKNOWN";
311 #undef DF2S
312 }
313