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(STKSTART); 39 E2S(TDLS); 40 E2S(FT_RESPONSE); 41 E2S(IBSS_RSN_START); 42 E2S(AUTH); 43 E2S(DEAUTH); 44 E2S(ASSOC_REJECT); 45 E2S(AUTH_TIMED_OUT); 46 E2S(ASSOC_TIMED_OUT); 47 E2S(WPS_BUTTON_PUSHED); 48 E2S(TX_STATUS); 49 E2S(RX_FROM_UNKNOWN); 50 E2S(RX_MGMT); 51 E2S(REMAIN_ON_CHANNEL); 52 E2S(CANCEL_REMAIN_ON_CHANNEL); 53 E2S(RX_PROBE_REQ); 54 E2S(NEW_STA); 55 E2S(EAPOL_RX); 56 E2S(SIGNAL_CHANGE); 57 E2S(INTERFACE_ENABLED); 58 E2S(INTERFACE_DISABLED); 59 E2S(CHANNEL_LIST_CHANGED); 60 E2S(INTERFACE_UNAVAILABLE); 61 E2S(BEST_CHANNEL); 62 E2S(UNPROT_DEAUTH); 63 E2S(UNPROT_DISASSOC); 64 E2S(STATION_LOW_ACK); 65 E2S(IBSS_PEER_LOST); 66 E2S(DRIVER_GTK_REKEY); 67 E2S(SCHED_SCAN_STOPPED); 68 E2S(DRIVER_CLIENT_POLL_OK); 69 E2S(EAPOL_TX_STATUS); 70 E2S(CH_SWITCH); 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 } 86 87 return "UNKNOWN"; 88#undef E2S 89} 90 91 92const char * channel_width_to_string(enum chan_width width) 93{ 94 switch (width) { 95 case CHAN_WIDTH_20_NOHT: 96 return "20 MHz (no HT)"; 97 case CHAN_WIDTH_20: 98 return "20 MHz"; 99 case CHAN_WIDTH_40: 100 return "40 MHz"; 101 case CHAN_WIDTH_80: 102 return "80 MHz"; 103 case CHAN_WIDTH_80P80: 104 return "80+80 MHz"; 105 case CHAN_WIDTH_160: 106 return "160 MHz"; 107 default: 108 return "unknown"; 109 } 110} 111 112 113int ht_supported(const struct hostapd_hw_modes *mode) 114{ 115 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) { 116 /* 117 * The driver did not indicate whether it supports HT. Assume 118 * it does to avoid connection issues. 119 */ 120 return 1; 121 } 122 123 /* 124 * IEEE Std 802.11n-2009 20.1.1: 125 * An HT non-AP STA shall support all EQM rates for one spatial stream. 126 */ 127 return mode->mcs_set[0] == 0xff; 128} 129 130 131int vht_supported(const struct hostapd_hw_modes *mode) 132{ 133 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) { 134 /* 135 * The driver did not indicate whether it supports VHT. Assume 136 * it does to avoid connection issues. 137 */ 138 return 1; 139 } 140 141 /* 142 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream. 143 * TODO: Verify if this complies with the standard 144 */ 145 return (mode->vht_mcs_set[0] & 0x3) != 3; 146} 147 148 149static int wpa_check_wowlan_trigger(const char *start, const char *trigger, 150 int capa_trigger, u8 *param_trigger) 151{ 152 if (os_strcmp(start, trigger) != 0) 153 return 0; 154 if (!capa_trigger) 155 return 0; 156 157 *param_trigger = 1; 158 return 1; 159} 160 161 162struct wowlan_triggers * 163wpa_get_wowlan_triggers(const char *wowlan_triggers, 164 const struct wpa_driver_capa *capa) 165{ 166 struct wowlan_triggers *triggers; 167 char *start, *end, *buf; 168 int last; 169 170 if (!wowlan_triggers) 171 return NULL; 172 173 buf = os_strdup(wowlan_triggers); 174 if (buf == NULL) 175 return NULL; 176 177 triggers = os_zalloc(sizeof(*triggers)); 178 if (triggers == NULL) 179 goto out; 180 181#define CHECK_TRIGGER(trigger) \ 182 wpa_check_wowlan_trigger(start, #trigger, \ 183 capa->wowlan_triggers.trigger, \ 184 &triggers->trigger) 185 186 start = buf; 187 while (*start != '\0') { 188 while (isblank((unsigned char) *start)) 189 start++; 190 if (*start == '\0') 191 break; 192 end = start; 193 while (!isblank((unsigned char) *end) && *end != '\0') 194 end++; 195 last = *end == '\0'; 196 *end = '\0'; 197 198 if (!CHECK_TRIGGER(any) && 199 !CHECK_TRIGGER(disconnect) && 200 !CHECK_TRIGGER(magic_pkt) && 201 !CHECK_TRIGGER(gtk_rekey_failure) && 202 !CHECK_TRIGGER(eap_identity_req) && 203 !CHECK_TRIGGER(four_way_handshake) && 204 !CHECK_TRIGGER(rfkill_release)) { 205 wpa_printf(MSG_DEBUG, 206 "Unknown/unsupported wowlan trigger '%s'", 207 start); 208 os_free(triggers); 209 triggers = NULL; 210 goto out; 211 } 212 213 if (last) 214 break; 215 start = end + 1; 216 } 217#undef CHECK_TRIGGER 218 219out: 220 os_free(buf); 221 return triggers; 222} 223 224 225const char * driver_flag_to_string(u64 flag) 226{ 227#define DF2S(x) case WPA_DRIVER_FLAGS_ ## x: return #x 228 switch (flag) { 229 DF2S(DRIVER_IE); 230 DF2S(SET_KEYS_AFTER_ASSOC); 231 DF2S(DFS_OFFLOAD); 232 DF2S(4WAY_HANDSHAKE); 233 DF2S(WIRED); 234 DF2S(SME); 235 DF2S(AP); 236 DF2S(SET_KEYS_AFTER_ASSOC_DONE); 237 DF2S(HT_2040_COEX); 238 DF2S(P2P_CONCURRENT); 239 DF2S(P2P_DEDICATED_INTERFACE); 240 DF2S(P2P_CAPABLE); 241 DF2S(AP_TEARDOWN_SUPPORT); 242 DF2S(P2P_MGMT_AND_NON_P2P); 243 DF2S(SANE_ERROR_CODES); 244 DF2S(OFFCHANNEL_TX); 245 DF2S(EAPOL_TX_STATUS); 246 DF2S(DEAUTH_TX_STATUS); 247 DF2S(BSS_SELECTION); 248 DF2S(TDLS_SUPPORT); 249 DF2S(TDLS_EXTERNAL_SETUP); 250 DF2S(PROBE_RESP_OFFLOAD); 251 DF2S(AP_UAPSD); 252 DF2S(INACTIVITY_TIMER); 253 DF2S(AP_MLME); 254 DF2S(SAE); 255 DF2S(OBSS_SCAN); 256 DF2S(IBSS); 257 DF2S(RADAR); 258 DF2S(DEDICATED_P2P_DEVICE); 259 DF2S(QOS_MAPPING); 260 DF2S(AP_CSA); 261 DF2S(MESH); 262 DF2S(ACS_OFFLOAD); 263 DF2S(KEY_MGMT_OFFLOAD); 264 DF2S(TDLS_CHANNEL_SWITCH); 265 DF2S(HT_IBSS); 266 DF2S(VHT_IBSS); 267 DF2S(SUPPORT_HW_MODE_ANY); 268 DF2S(OFFCHANNEL_SIMULTANEOUS); 269 DF2S(FULL_AP_CLIENT_STATE); 270 DF2S(P2P_LISTEN_OFFLOAD); 271 } 272 return "UNKNOWN"; 273#undef DF2S 274} 275