/* * WPA Supplicant / Network configuration structures * Copyright (c) 2003-2008, Jouni Malinen * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Alternatively, this software may be distributed under the terms of BSD * license. * * See README and COPYING for more details. */ #ifndef CONFIG_SSID_H #define CONFIG_SSID_H #include "common/defs.h" #include "eap_peer/eap_config.h" #define MAX_SSID_LEN 32 #define DEFAULT_EAP_WORKAROUND ((unsigned int) -1) #define DEFAULT_EAPOL_FLAGS (EAPOL_FLAG_REQUIRE_KEY_UNICAST | \ EAPOL_FLAG_REQUIRE_KEY_BROADCAST) #define DEFAULT_PROTO (WPA_PROTO_WPA | WPA_PROTO_RSN) #define DEFAULT_KEY_MGMT (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X) #define DEFAULT_PAIRWISE (WPA_CIPHER_CCMP | WPA_CIPHER_TKIP) #define DEFAULT_GROUP (WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | \ WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) #define DEFAULT_FRAGMENT_SIZE 1398 #define DEFAULT_DISABLE_HT 0 #define DEFAULT_DISABLE_HT40 0 #define DEFAULT_DISABLE_MAX_AMSDU -1 /* no change */ #define DEFAULT_AMPDU_FACTOR -1 /* no change */ #define DEFAULT_AMPDU_DENSITY -1 /* no change */ /** * struct wpa_ssid - Network configuration data * * This structure includes all the configuration variables for a network. This * data is included in the per-interface configuration data as an element of * the network list, struct wpa_config::ssid. Each network block in the * configuration is mapped to a struct wpa_ssid instance. */ struct wpa_ssid { /** * next - Next network in global list * * This pointer can be used to iterate over all networks. The head of * this list is stored in the ssid field of struct wpa_config. */ struct wpa_ssid *next; /** * pnext - Next network in per-priority list * * This pointer can be used to iterate over all networks in the same * priority class. The heads of these list are stored in the pssid * fields of struct wpa_config. */ struct wpa_ssid *pnext; /** * id - Unique id for the network * * This identifier is used as a unique identifier for each network * block when using the control interface. Each network is allocated an * id when it is being created, either when reading the configuration * file or when a new network is added through the control interface. */ int id; /** * priority - Priority group * * By default, all networks will get same priority group (0). If some * of the networks are more desirable, this field can be used to change * the order in which wpa_supplicant goes through the networks when * selecting a BSS. The priority groups will be iterated in decreasing * priority (i.e., the larger the priority value, the sooner the * network is matched against the scan results). Within each priority * group, networks will be selected based on security policy, signal * strength, etc. * * Please note that AP scanning with scan_ssid=1 and ap_scan=2 mode are * not using this priority to select the order for scanning. Instead, * they try the networks in the order that used in the configuration * file. */ int priority; /** * ssid - Service set identifier (network name) * * This is the SSID for the network. For wireless interfaces, this is * used to select which network will be used. If set to %NULL (or * ssid_len=0), any SSID can be used. For wired interfaces, this must * be set to %NULL. Note: SSID may contain any characters, even nul * (ASCII 0) and as such, this should not be assumed to be a nul * terminated string. ssid_len defines how many characters are valid * and the ssid field is not guaranteed to be nul terminated. */ u8 *ssid; /** * ssid_len - Length of the SSID */ size_t ssid_len; /** * bssid - BSSID * * If set, this network block is used only when associating with the AP * using the configured BSSID * * If this is a persistent P2P group (disabled == 2), this is the GO * Device Address. */ u8 bssid[ETH_ALEN]; /** * bssid_set - Whether BSSID is configured for this network */ int bssid_set; /** * psk - WPA pre-shared key (256 bits) */ u8 psk[32]; /** * psk_set - Whether PSK field is configured */ int psk_set; /** * passphrase - WPA ASCII passphrase * * If this is set, psk will be generated using the SSID and passphrase * configured for the network. ASCII passphrase must be between 8 and * 63 characters (inclusive). */ char *passphrase; /** * pairwise_cipher - Bitfield of allowed pairwise ciphers, WPA_CIPHER_* */ int pairwise_cipher; /** * group_cipher - Bitfield of allowed group ciphers, WPA_CIPHER_* */ int group_cipher; /** * key_mgmt - Bitfield of allowed key management protocols * * WPA_KEY_MGMT_* */ int key_mgmt; /** * proto - Bitfield of allowed protocols, WPA_PROTO_* */ int proto; /** * auth_alg - Bitfield of allowed authentication algorithms * * WPA_AUTH_ALG_* */ int auth_alg; /** * scan_ssid - Scan this SSID with Probe Requests * * scan_ssid can be used to scan for APs using hidden SSIDs. * Note: Many drivers do not support this. ap_mode=2 can be used with * such drivers to use hidden SSIDs. */ int scan_ssid; #ifdef IEEE8021X_EAPOL #define EAPOL_FLAG_REQUIRE_KEY_UNICAST BIT(0) #define EAPOL_FLAG_REQUIRE_KEY_BROADCAST BIT(1) /** * eapol_flags - Bit field of IEEE 802.1X/EAPOL options (EAPOL_FLAG_*) */ int eapol_flags; /** * eap - EAP peer configuration for this network */ struct eap_peer_config eap; #endif /* IEEE8021X_EAPOL */ #define NUM_WEP_KEYS 4 #define MAX_WEP_KEY_LEN 16 /** * wep_key - WEP keys */ u8 wep_key[NUM_WEP_KEYS][MAX_WEP_KEY_LEN]; /** * wep_key_len - WEP key lengths */ size_t wep_key_len[NUM_WEP_KEYS]; /** * wep_tx_keyidx - Default key index for TX frames using WEP */ int wep_tx_keyidx; /** * proactive_key_caching - Enable proactive key caching * * This field can be used to enable proactive key caching which is also * known as opportunistic PMKSA caching for WPA2. This is disabled (0) * by default. Enable by setting this to 1. * * Proactive key caching is used to make supplicant assume that the APs * are using the same PMK and generate PMKSA cache entries without * doing RSN pre-authentication. This requires support from the AP side * and is normally used with wireless switches that co-locate the * authenticator. */ int proactive_key_caching; /** * mixed_cell - Whether mixed cells are allowed * * This option can be used to configure whether so called mixed cells, * i.e., networks that use both plaintext and encryption in the same * SSID, are allowed. This is disabled (0) by default. Enable by * setting this to 1. */ int mixed_cell; #ifdef IEEE8021X_EAPOL /** * leap - Number of EAP methods using LEAP * * This field should be set to 1 if LEAP is enabled. This is used to * select IEEE 802.11 authentication algorithm. */ int leap; /** * non_leap - Number of EAP methods not using LEAP * * This field should be set to >0 if any EAP method other than LEAP is * enabled. This is used to select IEEE 802.11 authentication * algorithm. */ int non_leap; /** * eap_workaround - EAP workarounds enabled * * wpa_supplicant supports number of "EAP workarounds" to work around * interoperability issues with incorrectly behaving authentication * servers. This is recommended to be enabled by default because some * of the issues are present in large number of authentication servers. * * Strict EAP conformance mode can be configured by disabling * workarounds with eap_workaround = 0. */ unsigned int eap_workaround; #endif /* IEEE8021X_EAPOL */ /** * mode - IEEE 802.11 operation mode (Infrastucture/IBSS) * * 0 = infrastructure (Managed) mode, i.e., associate with an AP. * * 1 = IBSS (ad-hoc, peer-to-peer) * * 2 = AP (access point) * * 3 = P2P Group Owner (can be set in the configuration file) * * 4 = P2P Group Formation (used internally; not in configuration * files) * * Note: IBSS can only be used with key_mgmt NONE (plaintext and * static WEP) and key_mgmt=WPA-NONE (fixed group key TKIP/CCMP). In * addition, ap_scan has to be set to 2 for IBSS. WPA-None requires * following network block options: proto=WPA, key_mgmt=WPA-NONE, * pairwise=NONE, group=TKIP (or CCMP, but not both), and psk must also * be set (either directly or using ASCII passphrase). */ enum wpas_mode { WPAS_MODE_INFRA = 0, WPAS_MODE_IBSS = 1, WPAS_MODE_AP = 2, WPAS_MODE_P2P_GO = 3, WPAS_MODE_P2P_GROUP_FORMATION = 4, } mode; /** * disabled - Whether this network is currently disabled * * 0 = this network can be used (default). * 1 = this network block is disabled (can be enabled through * ctrl_iface, e.g., with wpa_cli or wpa_gui). * 2 = this network block includes parameters for a persistent P2P * group (can be used with P2P ctrl_iface commands) */ int disabled; /** * peerkey - Whether PeerKey handshake for direct links is allowed * * This is only used when both RSN/WPA2 and IEEE 802.11e (QoS) are * enabled. * * 0 = disabled (default) * 1 = enabled */ int peerkey; /** * id_str - Network identifier string for external scripts * * This value is passed to external ctrl_iface monitors in * WPA_EVENT_CONNECTED event and wpa_cli sets this as WPA_ID_STR * environment variable for action scripts. */ char *id_str; #ifdef CONFIG_IEEE80211W /** * ieee80211w - Whether management frame protection is enabled * * This value is used to configure policy for management frame * protection (IEEE 802.11w). 0 = disabled, 1 = optional, 2 = required. */ enum mfp_options ieee80211w; #endif /* CONFIG_IEEE80211W */ /** * frequency - Channel frequency in megahertz (MHz) for IBSS * * This value is used to configure the initial channel for IBSS (adhoc) * networks, e.g., 2412 = IEEE 802.11b/g channel 1. It is ignored in * the infrastructure mode. In addition, this value is only used by the * station that creates the IBSS. If an IBSS network with the * configured SSID is already present, the frequency of the network * will be used instead of this configured value. */ int frequency; /** * wpa_ptk_rekey - Maximum lifetime for PTK in seconds * * This value can be used to enforce rekeying of PTK to mitigate some * attacks against TKIP deficiencies. */ int wpa_ptk_rekey; /** * scan_freq - Array of frequencies to scan or %NULL for all * * This is an optional zero-terminated array of frequencies in * megahertz (MHz) to include in scan requests when searching for this * network. This can be used to speed up scanning when the network is * known to not use all possible channels. */ int *scan_freq; /** * bgscan - Background scan and roaming parameters or %NULL if none * * This is an optional set of parameters for background scanning and * roaming within a network (ESS) in following format: * : */ char *bgscan; /** * freq_list - Array of allowed frequencies or %NULL for all * * This is an optional zero-terminated array of frequencies in * megahertz (MHz) to allow for selecting the BSS. If set, scan results * that do not match any of the specified frequencies are not * considered when selecting a BSS. */ int *freq_list; /** * p2p_client_list - List of P2P Clients in a persistent group (GO) * * This is a list of P2P Clients (P2P Device Address) that have joined * the persistent group. This is maintained on the GO for persistent * group entries (disabled == 2). */ u8 *p2p_client_list; /** * num_p2p_clients - Number of entries in p2p_client_list */ size_t num_p2p_clients; /** * p2p_group - Network generated as a P2P group (used internally) */ int p2p_group; /** * p2p_persistent_group - Whether this is a persistent group */ int p2p_persistent_group; /** * temporary - Whether this network is temporary and not to be saved */ int temporary; /** * export_keys - Whether keys may be exported * * This attribute will be set when keys are determined through * WPS or similar so that they may be exported. */ int export_keys; #ifdef CONFIG_HT_OVERRIDES /** * disable_ht - Disable HT (IEEE 802.11n) for this network * * By default, use it if it is available, but this can be configured * to 1 to have it disabled. */ int disable_ht; /** * disable_ht40 - Disable HT40 for this network * * By default, use it if it is available, but this can be configured * to 1 to have it disabled. */ int disable_ht40; /** * disable_max_amsdu - Disable MAX A-MSDU * * A-MDSU will be 3839 bytes when disabled, or 7935 * when enabled (assuming it is otherwise supported) * -1 (default) means do not apply any settings to the kernel. */ int disable_max_amsdu; /** * ampdu_factor - Maximum A-MPDU Length Exponent * * Value: 0-3, see 7.3.2.56.3 in IEEE Std 802.11n-2009. */ int ampdu_factor; /** * ampdu_density - Minimum A-MPDU Start Spacing * * Value: 0-7, see 7.3.2.56.3 in IEEE Std 802.11n-2009. */ int ampdu_density; /** * ht_mcs - Allowed HT-MCS rates, in ASCII hex: ffff0000... * * By default (empty string): Use whatever the OS has configured. */ char *ht_mcs; #endif /* CONFIG_HT_OVERRIDES */ }; #endif /* CONFIG_SSID_H */