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 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 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 } 94 95 return "UNKNOWN"; 96 #undef E2S 97 } 98 99 100 const char * channel_width_to_string(enum chan_width width) 101 { 102 switch (width) { 103 case CHAN_WIDTH_20_NOHT: 104 return "20 MHz (no HT)"; 105 case CHAN_WIDTH_20: 106 return "20 MHz"; 107 case CHAN_WIDTH_40: 108 return "40 MHz"; 109 case CHAN_WIDTH_80: 110 return "80 MHz"; 111 case CHAN_WIDTH_80P80: 112 return "80+80 MHz"; 113 case CHAN_WIDTH_160: 114 return "160 MHz"; 115 default: 116 return "unknown"; 117 } 118 } 119 120 121 int channel_width_to_int(enum chan_width width) 122 { 123 switch (width) { 124 case CHAN_WIDTH_20_NOHT: 125 case CHAN_WIDTH_20: 126 return 20; 127 case CHAN_WIDTH_40: 128 return 40; 129 case CHAN_WIDTH_80: 130 return 80; 131 case CHAN_WIDTH_80P80: 132 case CHAN_WIDTH_160: 133 return 160; 134 default: 135 return 0; 136 } 137 } 138 139 140 int ht_supported(const struct hostapd_hw_modes *mode) 141 { 142 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) { 143 /* 144 * The driver did not indicate whether it supports HT. Assume 145 * it does to avoid connection issues. 146 */ 147 return 1; 148 } 149 150 /* 151 * IEEE Std 802.11n-2009 20.1.1: 152 * An HT non-AP STA shall support all EQM rates for one spatial stream. 153 */ 154 return mode->mcs_set[0] == 0xff; 155 } 156 157 158 int vht_supported(const struct hostapd_hw_modes *mode) 159 { 160 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) { 161 /* 162 * The driver did not indicate whether it supports VHT. Assume 163 * it does to avoid connection issues. 164 */ 165 return 1; 166 } 167 168 /* 169 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream. 170 * TODO: Verify if this complies with the standard 171 */ 172 return (mode->vht_mcs_set[0] & 0x3) != 3; 173 } 174 175 176 static int wpa_check_wowlan_trigger(const char *start, const char *trigger, 177 int capa_trigger, u8 *param_trigger) 178 { 179 if (os_strcmp(start, trigger) != 0) 180 return 0; 181 if (!capa_trigger) 182 return 0; 183 184 *param_trigger = 1; 185 return 1; 186 } 187 188 189 struct wowlan_triggers * 190 wpa_get_wowlan_triggers(const char *wowlan_triggers, 191 const struct wpa_driver_capa *capa) 192 { 193 struct wowlan_triggers *triggers; 194 char *start, *end, *buf; 195 int last; 196 197 if (!wowlan_triggers) 198 return NULL; 199 200 buf = os_strdup(wowlan_triggers); 201 if (buf == NULL) 202 return NULL; 203 204 triggers = os_zalloc(sizeof(*triggers)); 205 if (triggers == NULL) 206 goto out; 207 208 #define CHECK_TRIGGER(trigger) \ 209 wpa_check_wowlan_trigger(start, #trigger, \ 210 capa->wowlan_triggers.trigger, \ 211 &triggers->trigger) 212 213 start = buf; 214 while (*start != '\0') { 215 while (isblank((unsigned char) *start)) 216 start++; 217 if (*start == '\0') 218 break; 219 end = start; 220 while (!isblank((unsigned char) *end) && *end != '\0') 221 end++; 222 last = *end == '\0'; 223 *end = '\0'; 224 225 if (!CHECK_TRIGGER(any) && 226 !CHECK_TRIGGER(disconnect) && 227 !CHECK_TRIGGER(magic_pkt) && 228 !CHECK_TRIGGER(gtk_rekey_failure) && 229 !CHECK_TRIGGER(eap_identity_req) && 230 !CHECK_TRIGGER(four_way_handshake) && 231 !CHECK_TRIGGER(rfkill_release)) { 232 wpa_printf(MSG_DEBUG, 233 "Unknown/unsupported wowlan trigger '%s'", 234 start); 235 os_free(triggers); 236 triggers = NULL; 237 goto out; 238 } 239 240 if (last) 241 break; 242 start = end + 1; 243 } 244 #undef CHECK_TRIGGER 245 246 out: 247 os_free(buf); 248 return triggers; 249 } 250 251 252 const char * driver_flag_to_string(u64 flag) 253 { 254 #define DF2S(x) case WPA_DRIVER_FLAGS_ ## x: return #x 255 switch (flag) { 256 DF2S(DRIVER_IE); 257 DF2S(SET_KEYS_AFTER_ASSOC); 258 DF2S(DFS_OFFLOAD); 259 DF2S(4WAY_HANDSHAKE_PSK); 260 DF2S(4WAY_HANDSHAKE_8021X); 261 DF2S(WIRED); 262 DF2S(SME); 263 DF2S(AP); 264 DF2S(SET_KEYS_AFTER_ASSOC_DONE); 265 DF2S(HT_2040_COEX); 266 DF2S(P2P_CONCURRENT); 267 DF2S(P2P_DEDICATED_INTERFACE); 268 DF2S(P2P_CAPABLE); 269 DF2S(AP_TEARDOWN_SUPPORT); 270 DF2S(P2P_MGMT_AND_NON_P2P); 271 DF2S(SANE_ERROR_CODES); 272 DF2S(OFFCHANNEL_TX); 273 DF2S(EAPOL_TX_STATUS); 274 DF2S(DEAUTH_TX_STATUS); 275 DF2S(BSS_SELECTION); 276 DF2S(TDLS_SUPPORT); 277 DF2S(TDLS_EXTERNAL_SETUP); 278 DF2S(PROBE_RESP_OFFLOAD); 279 DF2S(AP_UAPSD); 280 DF2S(INACTIVITY_TIMER); 281 DF2S(AP_MLME); 282 DF2S(SAE); 283 DF2S(OBSS_SCAN); 284 DF2S(IBSS); 285 DF2S(RADAR); 286 DF2S(DEDICATED_P2P_DEVICE); 287 DF2S(QOS_MAPPING); 288 DF2S(AP_CSA); 289 DF2S(MESH); 290 DF2S(ACS_OFFLOAD); 291 DF2S(KEY_MGMT_OFFLOAD); 292 DF2S(TDLS_CHANNEL_SWITCH); 293 DF2S(HT_IBSS); 294 DF2S(VHT_IBSS); 295 DF2S(SUPPORT_HW_MODE_ANY); 296 DF2S(OFFCHANNEL_SIMULTANEOUS); 297 DF2S(FULL_AP_CLIENT_STATE); 298 DF2S(P2P_LISTEN_OFFLOAD); 299 DF2S(SUPPORT_FILS); 300 DF2S(BEACON_RATE_LEGACY); 301 DF2S(BEACON_RATE_HT); 302 DF2S(BEACON_RATE_VHT); 303 DF2S(MGMT_TX_RANDOM_TA); 304 DF2S(MGMT_TX_RANDOM_TA_CONNECTED); 305 DF2S(SCHED_SCAN_RELATIVE_RSSI); 306 DF2S(HE_CAPABILITIES); 307 DF2S(FILS_SK_OFFLOAD); 308 DF2S(OCE_STA); 309 DF2S(OCE_AP); 310 DF2S(OCE_STA_CFON); 311 DF2S(MFP_OPTIONAL); 312 DF2S(SELF_MANAGED_REGULATORY); 313 DF2S(FTM_RESPONDER); 314 DF2S(CONTROL_PORT); 315 DF2S(VLAN_OFFLOAD); 316 DF2S(UPDATE_FT_IES); 317 DF2S(SAFE_PTK0_REKEYS); 318 DF2S(BEACON_PROTECTION); 319 DF2S(EXTENDED_KEY_ID); 320 } 321 return "UNKNOWN"; 322 #undef DF2S 323 } 324 325 326 const char * driver_flag2_to_string(u64 flag2) 327 { 328 #define DF2S(x) case WPA_DRIVER_FLAGS2_ ## x: return #x 329 switch (flag2) { 330 DF2S(CONTROL_PORT_RX); 331 DF2S(CONTROL_PORT_TX_STATUS); 332 } 333 return "UNKNOWN"; 334 #undef DF2S 335 } 336