driver.h

最新的Host AP 新添加了许多pcmcia 的驱动

	short chan; /* channel number (IEEE 802.11) */
	short freq; /* frequency in MHz */
	int flag; /* flag for user space use (WPA_CHAN_*) */
};

#define WPA_RATE_ERP 0x00000001
#define WPA_RATE_BASIC 0x00000002
#define WPA_RATE_PREAMBLE2 0x00000004
#define WPA_RATE_SUPPORTED 0x00000010
#define WPA_RATE_OFDM 0x00000020
#define WPA_RATE_CCK 0x00000040
#define WPA_RATE_MANDATORY 0x00000100

struct wpa_rate_data {
	int rate; /* rate in 100 kbps */
	int flags; /* WPA_RATE_ flags */
};

typedef enum {
	WPA_MODE_IEEE80211B,
	WPA_MODE_IEEE80211G,
	WPA_MODE_IEEE80211A,
	NUM_WPA_MODES
} wpa_hw_mode;

struct wpa_hw_modes {
	wpa_hw_mode mode;
	int num_channels;
	struct wpa_channel_data *channels;
	int num_rates;
	struct wpa_rate_data *rates;
};


struct ieee80211_rx_status {
        int channel;
        int ssi;
};


/**
 * struct wpa_driver_ops - Driver interface API definition
 *
 * This structure defines the API that each driver interface needs to implement
 * for core wpa_supplicant code. All driver specific functionality is captured
 * in this wrapper.
 */
struct wpa_driver_ops {
	/** Name of the driver interface */
	const char *name;
	/** One line description of the driver interface */
	const char *desc;

	/**
	 * get_bssid - Get the current BSSID
	 * @priv: private driver interface data
	 * @bssid: buffer for BSSID (ETH_ALEN = 6 bytes)
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Query kernel driver for the current BSSID and copy it to bssid.
	 * Setting bssid to 00:00:00:00:00:00 is recommended if the STA is not
	 * associated.
	 */
	int (*get_bssid)(void *priv, u8 *bssid);

	/**
	 * get_ssid - Get the current SSID
	 * @priv: private driver interface data
	 * @ssid: buffer for SSID (at least 32 bytes)
	 *
	 * Returns: Length of the SSID on success, -1 on failure
	 *
	 * Query kernel driver for the current SSID and copy it to ssid.
	 * Returning zero is recommended if the STA is not associated.
	 *
	 * Note: SSID is an array of octets, i.e., it is not nul terminated and
	 * can, at least in theory, contain control characters (including nul)
	 * and as such, should be processed as binary data, not a printable
	 * string.
	 */
	int (*get_ssid)(void *priv, u8 *ssid);

	/**
	 * set_wpa - Enable/disable WPA support (OBSOLETE)
	 * @priv: private driver interface data
	 * @enabled: 1 = enable, 0 = disable
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Note: This function is included for backwards compatibility. This is
	 * called only just after init and just before deinit, so these
	 * functions can be used to implement same functionality and the driver
	 * interface need not define this function.
	 *
	 * Configure the kernel driver to enable/disable WPA support. This may
	 * be empty function, if WPA support is always enabled. Common
	 * configuration items are WPA IE (clearing it when WPA support is
	 * disabled), Privacy flag configuration for capability field (note:
	 * this the value need to set in associate handler to allow plaintext
	 * mode to be used) when trying to associate with, roaming mode (can
	 * allow wpa_supplicant to control roaming if ap_scan=1 is used;
	 * however, drivers can also implement roaming if desired, especially
	 * ap_scan=2 mode is used for this).
	 */
	int (*set_wpa)(void *priv, int enabled);

	/**
	 * set_key - Configure encryption key
	 * @priv: private driver interface data
	 * @alg: encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
	 *	%WPA_ALG_TKIP, %WPA_ALG_CCMP, %WPA_ALG_IGTK, %WPA_ALG_PMK);
	 *	%WPA_ALG_NONE clears the key.
	 * @addr: address of the peer STA or ff:ff:ff:ff:ff:ff for
	 *	broadcast/default keys
	 * @key_idx: key index (0..3), usually 0 for unicast keys; 0..4095 for
	 *	IGTK
	 * @set_tx: configure this key as the default Tx key (only used when
	 *	driver does not support separate unicast/individual key
	 * @seq: sequence number/packet number, seq_len octets, the next
	 *	packet number to be used for in replay protection; configured
	 *	for Rx keys (in most cases, this is only used with broadcast
	 *	keys and set to zero for unicast keys)
	 * @seq_len: length of the seq, depends on the algorithm:
	 *	TKIP: 6 octets, CCMP: 6 octets, IGTK: 6 octets
	 * @key: key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
	 *	8-byte Rx Mic Key
	 * @key_len: length of the key buffer in octets (WEP: 5 or 13,
	 *	TKIP: 32, CCMP: 16, IGTK: 16)
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Configure the given key for the kernel driver. If the driver
	 * supports separate individual keys (4 default keys + 1 individual),
	 * addr can be used to determine whether the key is default or
	 * individual. If only 4 keys are supported, the default key with key
	 * index 0 is used as the individual key. STA must be configured to use
	 * it as the default Tx key (set_tx is set) and accept Rx for all the
	 * key indexes. In most cases, WPA uses only key indexes 1 and 2 for
	 * broadcast keys, so key index 0 is available for this kind of
	 * configuration.
	 *
	 * Please note that TKIP keys include separate TX and RX MIC keys and
	 * some drivers may expect them in different order than wpa_supplicant
	 * is using. If the TX/RX keys are swapped, all TKIP encrypted packets
	 * will tricker Michael MIC errors. This can be fixed by changing the
	 * order of MIC keys by swapping te bytes 16..23 and 24..31 of the key
	 * in driver_*.c set_key() implementation, see driver_ndis.c for an
	 * example on how this can be done.
	 */
	int (*set_key)(void *priv, wpa_alg alg, const u8 *addr,
		       int key_idx, int set_tx, const u8 *seq, size_t seq_len,
		       const u8 *key, size_t key_len);

	/**
	 * init - Initialize driver interface
	 * @ctx: context to be used when calling wpa_supplicant functions,
	 * e.g., wpa_supplicant_event()
	 * @ifname: interface name, e.g., wlan0
	 *
	 * Returns: Pointer to private data, %NULL on failure
	 *
	 * Initialize driver interface, including event processing for kernel
	 * driver events (e.g., associated, scan results, Michael MIC failure).
	 * This function can allocate a private configuration data area for
	 * @ctx, file descriptor, interface name, etc. information that may be
	 * needed in future driver operations. If this is not used, non-NULL
	 * value will need to be returned because %NULL is used to indicate
	 * failure. The returned value will be used as 'void *priv' data for
	 * all other driver_ops functions.
	 *
	 * The main event loop (eloop.c) of wpa_supplicant can be used to
	 * register callback for read sockets (eloop_register_read_sock()).
	 *
	 * See below for more information about events and
	 * wpa_supplicant_event() function.
	 */
	void * (*init)(void *ctx, const char *ifname);

	/**
	 * deinit - Deinitialize driver interface
	 * @priv: private driver interface data from init()
	 *
	 * Shut down driver interface and processing of driver events. Free
	 * private data buffer if one was allocated in init() handler.
	 */
	void (*deinit)(void *priv);

	/**
	 * set_param - Set driver configuration parameters
	 * @priv: private driver interface data from init()
	 * @param: driver specific configuration parameters
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Optional handler for notifying driver interface about configuration
	 * parameters (driver_param).
	 */
	int (*set_param)(void *priv, const char *param);

	/**
	 * set_countermeasures - Enable/disable TKIP countermeasures
	 * @priv: private driver interface data
	 * @enabled: 1 = countermeasures enabled, 0 = disabled
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Configure TKIP countermeasures. When these are enabled, the driver
	 * should drop all received and queued frames that are using TKIP.
	 */
	int (*set_countermeasures)(void *priv, int enabled);

	/**
	 * set_drop_unencrypted - Enable/disable unencrypted frame filtering
	 * @priv: private driver interface data
	 * @enabled: 1 = unencrypted Tx/Rx frames will be dropped, 0 = disabled
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Configure the driver to drop all non-EAPOL frames (both receive and
	 * transmit paths). Unencrypted EAPOL frames (ethertype 0x888e) must
	 * still be allowed for key negotiation.
	 */
	int (*set_drop_unencrypted)(void *priv, int enabled);

	/**
	 * scan - Request the driver to initiate scan
	 * @priv: private driver interface data
	 * @ssid: specific SSID to scan for (ProbeReq) or %NULL to scan for
	 *	all SSIDs (either active scan with broadcast SSID or passive
	 *	scan
	 * @ssid_len: length of the SSID
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * Once the scan results are ready, the driver should report scan
	 * results event for wpa_supplicant which will eventually request the
	 * results with wpa_driver_get_scan_results().
	 */
	int (*scan)(void *priv, const u8 *ssid, size_t ssid_len);

	/**
	 * get_scan_results - Fetch the latest scan results (old version)
	 * @priv: private driver interface data
	 * @results: pointer to buffer for scan results
	 * @max_size: maximum number of entries (buffer size)
	 *
	 * Returns: Number of scan result entries used on success, -1 on
	 * failure
	 *
	 * If scan results include more than max_size BSSes, max_size will be
	 * returned and the remaining entries will not be included in the
	 * buffer.
	 *
	 * This function is depracated. New driver wrapper implementations
	 * should implement support for get_scan_results2().
	 */
	int (*get_scan_results)(void *priv,
				struct wpa_scan_result *results,
				size_t max_size);

	/**
	 * deauthenticate - Request driver to deauthenticate
	 * @priv: private driver interface data
	 * @addr: peer address (BSSID of the AP)
	 * @reason_code: 16-bit reason code to be sent in the deauthentication
	 *	frame
	 *
	 * Returns: 0 on success, -1 on failure
	 */
	int (*deauthenticate)(void *priv, const u8 *addr, int reason_code);

	/**
	 * disassociate - Request driver to disassociate
	 * @priv: private driver interface data
	 * @addr: peer address (BSSID of the AP)
	 * @reason_code: 16-bit reason code to be sent in the disassociation
	 *	frame
	 *
	 * Returns: 0 on success, -1 on failure
	 */
	int (*disassociate)(void *priv, const u8 *addr, int reason_code);

	/**
	 * associate - Request driver to associate
	 * @priv: private driver interface data
	 * @params: association parameters
	 *
	 * Returns: 0 on success, -1 on failure
	 */
	int (*associate)(void *priv,
			 struct wpa_driver_associate_params *params);

	/**
	 * set_auth_alg - Set IEEE 802.11 authentication algorithm
	 * @priv: private driver interface data
	 * @auth_alg: bit field of AUTH_ALG_*
	 *
	 * If the driver supports more than one authentication algorithm at the
	 * same time, it should configure all supported algorithms. If not, one
	 * algorithm needs to be selected arbitrarily. Open System
	 * authentication should be ok for most cases and it is recommended to
	 * be used if other options are not supported. Static WEP configuration
	 * may also use Shared Key authentication and LEAP requires its own
	 * algorithm number. For LEAP, user can make sure that only one
	 * algorithm is used at a time by configuring LEAP as the only
	 * supported EAP method. This information is also available in
	 * associate() params, so set_auth_alg may not be needed in case of
	 * most drivers.
	 *
	 * Returns: 0 on success, -1 on failure
	 */
	int (*set_auth_alg)(void *priv, int auth_alg);

	/**
	 * add_pmkid - Add PMKSA cache entry to the driver
	 * @priv: private driver interface data
	 * @bssid: BSSID for the PMKSA cache entry
	 * @pmkid: PMKID for the PMKSA cache entry
	 *
	 * Returns: 0 on success, -1 on failure
	 *
	 * This function is called when a new PMK is received, as a result of
	 * either normal authentication or RSN pre-authentication.
	 *
	 * If the driver generates RSN IE, i.e., it does not use wpa_ie in
	 * associate(), add_pmkid() can be used to add new PMKSA cache entries
	 * in the driver. If the driver uses wpa_ie from wpa_supplicant, this
	 * driver_ops function does not need to be implemented. Likewise, if
	 * the driver does not support WPA, this function is not needed.
	 */
	int (*add_pmkid)(void *priv, const u8 *bssid, const u8 *pmkid);