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 13void 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 27const 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 } 93 94 return "UNKNOWN"; 95#undef E2S 96} 97 98 99const char * channel_width_to_string(enum chan_width width) 100{ 101 switch (width) { 102 case CHAN_WIDTH_20_NOHT: 103 return "20 MHz (no HT)"; 104 case CHAN_WIDTH_20: 105 return "20 MHz"; 106 case CHAN_WIDTH_40: 107 return "40 MHz"; 108 case CHAN_WIDTH_80: 109 return "80 MHz"; 110 case CHAN_WIDTH_80P80: 111 return "80+80 MHz"; 112 case CHAN_WIDTH_160: 113 return "160 MHz"; 114 default: 115 return "unknown"; 116 } 117} 118 119 120int channel_width_to_int(enum chan_width width) 121{ 122 switch (width) { 123 case CHAN_WIDTH_20_NOHT: 124 case CHAN_WIDTH_20: 125 return 20; 126 case CHAN_WIDTH_40: 127 return 40; 128 case CHAN_WIDTH_80: 129 return 80; 130 case CHAN_WIDTH_80P80: 131 case CHAN_WIDTH_160: 132 return 160; 133 default: 134 return 0; 135 } 136} 137 138 139int ht_supported(const struct hostapd_hw_modes *mode) 140{ 141 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) { 142 /* 143 * The driver did not indicate whether it supports HT. Assume 144 * it does to avoid connection issues. 145 */ 146 return 1; 147 } 148 149 /* 150 * IEEE Std 802.11n-2009 20.1.1: 151 * An HT non-AP STA shall support all EQM rates for one spatial stream. 152 */ 153 return mode->mcs_set[0] == 0xff; 154} 155 156 157int vht_supported(const struct hostapd_hw_modes *mode) 158{ 159 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) { 160 /* 161 * The driver did not indicate whether it supports VHT. Assume 162 * it does to avoid connection issues. 163 */ 164 return 1; 165 } 166 167 /* 168 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream. 169 * TODO: Verify if this complies with the standard 170 */ 171 return (mode->vht_mcs_set[0] & 0x3) != 3; 172} 173 174 175static int wpa_check_wowlan_trigger(const char *start, const char *trigger, 176 int capa_trigger, u8 *param_trigger) 177{ 178 if (os_strcmp(start, trigger) != 0) 179 return 0; 180 if (!capa_trigger) 181 return 0; 182 183 *param_trigger = 1; 184 return 1; 185} 186 187 188struct wowlan_triggers * 189wpa_get_wowlan_triggers(const char *wowlan_triggers, 190 const struct wpa_driver_capa *capa) 191{ 192 struct wowlan_triggers *triggers; 193 char *start, *end, *buf; 194 int last; 195 196 if (!wowlan_triggers) 197 return NULL; 198 199 buf = os_strdup(wowlan_triggers); 200 if (buf == NULL) 201 return NULL; 202 203 triggers = os_zalloc(sizeof(*triggers)); 204 if (triggers == NULL) 205 goto out; 206 207#define CHECK_TRIGGER(trigger) \ 208 wpa_check_wowlan_trigger(start, #trigger, \ 209 capa->wowlan_triggers.trigger, \ 210 &triggers->trigger) 211 212 start = buf; 213 while (*start != '\0') { 214 while (isblank((unsigned char) *start)) 215 start++; 216 if (*start == '\0') 217 break; 218 end = start; 219 while (!isblank((unsigned char) *end) && *end != '\0') 220 end++; 221 last = *end == '\0'; 222 *end = '\0'; 223 224 if (!CHECK_TRIGGER(any) && 225 !CHECK_TRIGGER(disconnect) && 226 !CHECK_TRIGGER(magic_pkt) && 227 !CHECK_TRIGGER(gtk_rekey_failure) && 228 !CHECK_TRIGGER(eap_identity_req) && 229 !CHECK_TRIGGER(four_way_handshake) && 230 !CHECK_TRIGGER(rfkill_release)) { 231 wpa_printf(MSG_DEBUG, 232 "Unknown/unsupported wowlan trigger '%s'", 233 start); 234 os_free(triggers); 235 triggers = NULL; 236 goto out; 237 } 238 239 if (last) 240 break; 241 start = end + 1; 242 } 243#undef CHECK_TRIGGER 244 245out: 246 os_free(buf); 247 return triggers; 248} 249 250 251const char * driver_flag_to_string(u64 flag) 252{ 253#define DF2S(x) case WPA_DRIVER_FLAGS_ ## x: return #x 254 switch (flag) { 255 DF2S(DRIVER_IE); 256 DF2S(SET_KEYS_AFTER_ASSOC); 257 DF2S(DFS_OFFLOAD); 258 DF2S(4WAY_HANDSHAKE_PSK); 259 DF2S(4WAY_HANDSHAKE_8021X); 260 DF2S(WIRED); 261 DF2S(SME); 262 DF2S(AP); 263 DF2S(SET_KEYS_AFTER_ASSOC_DONE); 264 DF2S(HT_2040_COEX); 265 DF2S(P2P_CONCURRENT); 266 DF2S(P2P_DEDICATED_INTERFACE); 267 DF2S(P2P_CAPABLE); 268 DF2S(AP_TEARDOWN_SUPPORT); 269 DF2S(P2P_MGMT_AND_NON_P2P); 270 DF2S(SANE_ERROR_CODES); 271 DF2S(OFFCHANNEL_TX); 272 DF2S(EAPOL_TX_STATUS); 273 DF2S(DEAUTH_TX_STATUS); 274 DF2S(BSS_SELECTION); 275 DF2S(TDLS_SUPPORT); 276 DF2S(TDLS_EXTERNAL_SETUP); 277 DF2S(PROBE_RESP_OFFLOAD); 278 DF2S(AP_UAPSD); 279 DF2S(INACTIVITY_TIMER); 280 DF2S(AP_MLME); 281 DF2S(SAE); 282 DF2S(OBSS_SCAN); 283 DF2S(IBSS); 284 DF2S(RADAR); 285 DF2S(DEDICATED_P2P_DEVICE); 286 DF2S(QOS_MAPPING); 287 DF2S(AP_CSA); 288 DF2S(MESH); 289 DF2S(ACS_OFFLOAD); 290 DF2S(KEY_MGMT_OFFLOAD); 291 DF2S(TDLS_CHANNEL_SWITCH); 292 DF2S(HT_IBSS); 293 DF2S(VHT_IBSS); 294 DF2S(SUPPORT_HW_MODE_ANY); 295 DF2S(OFFCHANNEL_SIMULTANEOUS); 296 DF2S(FULL_AP_CLIENT_STATE); 297 DF2S(P2P_LISTEN_OFFLOAD); 298 DF2S(SUPPORT_FILS); 299 DF2S(BEACON_RATE_LEGACY); 300 DF2S(BEACON_RATE_HT); 301 DF2S(BEACON_RATE_VHT); 302 DF2S(MGMT_TX_RANDOM_TA); 303 DF2S(MGMT_TX_RANDOM_TA_CONNECTED); 304 DF2S(SCHED_SCAN_RELATIVE_RSSI); 305 DF2S(HE_CAPABILITIES); 306 DF2S(FILS_SK_OFFLOAD); 307 DF2S(OCE_STA); 308 DF2S(OCE_AP); 309 DF2S(OCE_STA_CFON); 310 DF2S(MFP_OPTIONAL); 311 } 312 return "UNKNOWN"; 313#undef DF2S 314} 315