hostap_wlan.h

IEEE 802.11a/b/g linux2.4/2.6 驱动程序源代码

	HOSTAP_QUEUE set_tim_queue;
	struct list_head set_tim_list;
	spinlock_t set_tim_lock;

	int wds_max_connections;
	int wds_connections;
#define HOSTAP_WDS_BROADCAST_RA BIT(0)
#define HOSTAP_WDS_AP_CLIENT BIT(1)
#define HOSTAP_WDS_STANDARD_FRAME BIT(2)
	u32 wds_type;
	u16 tx_control; /* flags to be used in TX description */
	int manual_retry_count; /* -1 = use f/w default; otherwise retry count
				 * to be used with all frames */

	struct iw_statistics wstats;
	unsigned long scan_timestamp; /* Time started to scan */
	enum {
		PRISM2_MONITOR_80211 = 0, PRISM2_MONITOR_PRISM = 1,
		PRISM2_MONITOR_CAPHDR = 2
	} monitor_type;
	int (*saved_eth_header_parse)(struct sk_buff *skb,
				      unsigned char *haddr);
	int monitor_allow_fcserr;

	int hostapd; /* whether user space daemon, hostapd, is used for AP
		      * management */
	int hostapd_sta; /* whether hostapd is used with an extra STA interface
			  */
	struct net_device *apdev;
	struct net_device_stats apdevstats;

	char assoc_ap_addr[ETH_ALEN];
	struct net_device *stadev;
	struct net_device_stats stadevstats;

#define WEP_KEYS 4
#define WEP_KEY_LEN 13
	struct prism2_crypt_data *crypt[WEP_KEYS];
	int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
	struct timer_list crypt_deinit_timer;
	struct list_head crypt_deinit_list;

	int open_wep; /* allow unencrypted frames */
	int host_encrypt;
	int host_decrypt;
	int privacy_invoked; /* force privacy invoked flag even if no keys are
			      * configured */
	int fw_encrypt_ok; /* whether firmware-based WEP encrypt is working
			    * in Host AP mode (STA f/w 1.4.9 or newer) */
	int bcrx_sta_key; /* use individual keys to override default keys even
			   * with RX of broad/multicast frames */

	struct prism2_frag_entry frag_cache[PRISM2_FRAG_CACHE_LEN];
	unsigned int frag_next_idx;

	int ieee_802_1x; /* is IEEE 802.1X used */

	int antsel_tx, antsel_rx;
	int rts_threshold; /* dot11RTSThreshold */
	int fragm_threshold; /* dot11FragmentationThreshold */
	int auth_algs; /* PRISM2_AUTH_ flags */

	int enh_sec; /* cnfEnhSecurity options (broadcast SSID hide/ignore) */
	int tallies32; /* 32-bit tallies in use */

	struct prism2_helper_functions *func;

	int bus_master_threshold_tx;
	int bus_master_threshold_rx;
	u8 *bus_m1_buf;

	u8 *pda;
	int fw_ap;
#define PRISM2_FW_VER(major, minor, variant) \
(((major) << 16) | ((minor) << 8) | variant)
	u32 sta_fw_ver;

	/* Tasklets for handling hardware IRQ related operations outside hw IRQ
	 * handler */
	HOSTAP_TASKLET bap_tasklet;

	HOSTAP_TASKLET info_tasklet;
	struct sk_buff_head info_list; /* info frames as skb's for
					* info_tasklet */

	struct hostap_tx_callback_info *tx_callback; /* registered TX callbacks
						      */

	HOSTAP_TASKLET rx_tasklet;
	struct sk_buff_head rx_list;

	HOSTAP_TASKLET sta_tx_exc_tasklet;
	struct sk_buff_head sta_tx_exc_list;

	int host_roaming;
	unsigned long last_join_time; /* time of last JoinRequest */
	struct hfa384x_hostscan_result *last_scan_results;
	int last_scan_results_count;
	enum { PRISM2_SCAN, PRISM2_HOSTSCAN } last_scan_type;
	HOSTAP_QUEUE info_queue;
	long pending_info; /* bit field of pending info_queue items */
#define PRISM2_INFO_PENDING_LINKSTATUS 0
#define PRISM2_INFO_PENDING_SCANRESULTS 1
	int prev_link_status; /* previous received LinkStatus info */
	int prev_linkstatus_connected;
	u8 preferred_ap[6]; /* use this AP if possible */

#ifdef PRISM2_CALLBACK
	void *callback_data; /* Can be used in callbacks; e.g., allocate
			      * on enable event and free on disable event.
			      * Host AP driver code does not touch this. */
#endif /* PRISM2_CALLBACK */

	wait_queue_head_t hostscan_wq;

	/* Passive scan in Host AP mode */
	struct timer_list passive_scan_timer;
	int passive_scan_interval; /* in seconds, 0 = disabled */
	int passive_scan_channel;
	enum { PASSIVE_SCAN_WAIT, PASSIVE_SCAN_LISTEN } passive_scan_state;

	struct timer_list tick_timer;
	unsigned long last_tick_timer;
	unsigned int sw_tick_stuck;

	/* commsQuality / dBmCommsQuality data from periodic polling; only
	 * valid for Managed and Ad-hoc modes */
	unsigned long last_comms_qual_update;
	int comms_qual; /* in some odd unit.. */
	int avg_signal; /* in dB (note: negative) */
	int avg_noise; /* in dB (note: negative) */
	HOSTAP_QUEUE comms_qual_update;

	/* RSSI to dBm adjustment (for RX descriptor fields) */
	int rssi_to_dBm; /* substract from RSSI to get approximate dBm value */

	/* BSS list / protected by local->lock */
	struct list_head bss_list;
	int num_bss_info;
	int wpa; /* WPA support enabled */
	int tkip_countermeasures;
	int drop_unencrypted;
	/* Generic IEEE 802.11 info element to be added to
	 * ProbeResp/Beacon/(Re)AssocReq */
	u8 *generic_elem;
	size_t generic_elem_len;

#ifdef PRISM2_DOWNLOAD_SUPPORT
	/* Persistent volatile download data */
	struct prism2_download_data *dl_pri;
	struct prism2_download_data *dl_sec;
#endif /* PRISM2_DOWNLOAD_SUPPORT */

#ifdef PRISM2_IO_DEBUG
#define PRISM2_IO_DEBUG_SIZE 10000
	u32 io_debug[PRISM2_IO_DEBUG_SIZE];
	int io_debug_head;
	int io_debug_enabled;
#endif /* PRISM2_IO_DEBUG */

	/* struct local_info is used also in hostap.o that does not define
	 * any PRISM2_{PCCARD,PLX,PCI}. Make sure that the hardware version
	 * specific fields are in the end of the struct (these could also be
	 * moved to void *priv or something like that). */
#ifdef PRISM2_PCCARD
	dev_node_t node;
	dev_link_t *link;
	int sandisk_connectplus;
#endif /* PRISM2_PCCARD */

#ifdef PRISM2_PLX
	void *attr_mem;
	unsigned int cor_offset;
#endif /* PRISM2_PLX */

#ifdef PRISM2_PCI
#ifdef PRISM2_BUS_MASTER
	/* bus master for BAP0 (TX) */
	int bus_m0_tx_idx;
	u8 *bus_m0_buf;

	/* bus master for BAP1 (RX) */
	struct sk_buff *rx_skb;
#endif /* PRISM2_BUS_MASTER */
#ifdef CONFIG_PM
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10))
	u32 pci_save_state[16];
#endif
#endif /* CONFIG_PM */
#endif /* PRISM2_PCI */

	/* NOTE! Do not add common entries here after hardware version
	 * specific blocks. */
};


/* Per interface private Host AP data
 * Allocated for each net device that Host AP uses (wlan#, wlan#ap, wlan#sta,
 * WDS) and dev->priv points to this structure. */
struct hostap_interface {
	struct list_head list; /* list entry in Host AP interface list */
	struct net_device *dev; /* pointer to this device */
	struct local_info *local; /* pointer to shared private data */
	struct net_device_stats stats;
#if WIRELESS_EXT > 15
	/* Note: this data area must be at a fixed offset from dev->priv.
	 * Unfortunately, this model does not fit the current Host AP netdev
	 * data structure because this should really be in local_into_t that is
	 * shared by all virtual interfaces. Currently, only the main data
	 * device (wlan#) is used for iwspy entries. */
	struct iw_spy_data spy_data; /* iwspy support */
#if WIRELESS_EXT > 16
	/* This is the fix for the problem described above. Jean II */
	struct iw_public_data	wireless_data;
#endif /* WIRELESS_EXT > 16 */
#endif /* WIRELESS_EXT > 15 */

	enum {
		HOSTAP_INTERFACE_MASTER,
		HOSTAP_INTERFACE_MAIN,
		HOSTAP_INTERFACE_AP,
		HOSTAP_INTERFACE_STA,
		HOSTAP_INTERFACE_WDS,
	} type;

	union {
		struct hostap_interface_wds {
			u8 remote_addr[ETH_ALEN];
		} wds;
	} u;
};


#define HOSTAP_SKB_TX_DATA_MAGIC 0xf08a36a2

/*
 * TX meta data - stored in skb->cb buffer, so this must not be increased over
 * the 40-byte limit
 */
struct hostap_skb_tx_data {
	u32 magic; /* HOSTAP_SKB_TX_DATA_MAGIC */
	u8 rate; /* transmit rate */
#define HOSTAP_TX_FLAGS_WDS BIT(0)
#define HOSTAP_TX_FLAGS_BUFFERED_FRAME BIT(1)
#define HOSTAP_TX_FLAGS_ADD_MOREDATA BIT(2)
	u8 flags; /* HOSTAP_TX_FLAGS_* */
	u16 tx_cb_idx;
	struct hostap_interface *iface;
	unsigned long jiffies; /* queueing timestamp */
	unsigned short ethertype;
};


#ifndef PRISM2_NO_DEBUG

#define DEBUG_FID BIT(0)
#define DEBUG_PS BIT(1)
#define DEBUG_FLOW BIT(2)
#define DEBUG_AP BIT(3)
#define DEBUG_HW BIT(4)
#define DEBUG_EXTRA BIT(5)
#define DEBUG_EXTRA2 BIT(6)
#define DEBUG_PS2 BIT(7)
#define DEBUG_MASK (DEBUG_PS | DEBUG_AP | DEBUG_HW | DEBUG_EXTRA)
#define PDEBUG(n, args...) \
do { if ((n) & DEBUG_MASK) printk(KERN_DEBUG args); } while (0)
#define PDEBUG2(n, args...) \
do { if ((n) & DEBUG_MASK) printk(args); } while (0)

#else /* PRISM2_NO_DEBUG */

#define PDEBUG(n, args...)
#define PDEBUG2(n, args...)

#endif /* PRISM2_NO_DEBUG */

enum { BAP0 = 0, BAP1 = 1 };

#define PRISM2_IO_DEBUG_CMD_INB 0
#define PRISM2_IO_DEBUG_CMD_INW 1
#define PRISM2_IO_DEBUG_CMD_INSW 2
#define PRISM2_IO_DEBUG_CMD_OUTB 3
#define PRISM2_IO_DEBUG_CMD_OUTW 4
#define PRISM2_IO_DEBUG_CMD_OUTSW 5
#define PRISM2_IO_DEBUG_CMD_ERROR 6
#define PRISM2_IO_DEBUG_CMD_INTERRUPT 7

#ifdef PRISM2_IO_DEBUG

#define PRISM2_IO_DEBUG_ENTRY(cmd, reg, value) \
(((cmd) << 24) | ((reg) << 16) | value)

static inline void prism2_io_debug_add(struct net_device *dev, int cmd,
				       int reg, int value)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;

	if (!local->io_debug_enabled)
		return;

	local->io_debug[local->io_debug_head] =	jiffies & 0xffffffff;
	if (++local->io_debug_head >= PRISM2_IO_DEBUG_SIZE)
		local->io_debug_head = 0;
	local->io_debug[local->io_debug_head] =
		PRISM2_IO_DEBUG_ENTRY(cmd, reg, value);
	if (++local->io_debug_head >= PRISM2_IO_DEBUG_SIZE)
		local->io_debug_head = 0;
}


static inline void prism2_io_debug_error(struct net_device *dev, int err)
{
	struct hostap_interface *iface = dev->priv;
	local_info_t *local = iface->local;
	unsigned long flags;

	if (!local->io_debug_enabled)
		return;

	spin_lock_irqsave(&local->lock, flags);
	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_ERROR, 0, err);
	if (local->io_debug_enabled == 1) {
		local->io_debug_enabled = 0;
		printk(KERN_DEBUG "%s: I/O debug stopped\n", dev->name);
	}
	spin_unlock_irqrestore(&local->lock, flags);
}

#else /* PRISM2_IO_DEBUG */

static inline void prism2_io_debug_add(struct net_device *dev, int cmd,
				       int reg, int value)
{
}

static inline void prism2_io_debug_error(struct net_device *dev, int err)
{
}

#endif /* PRISM2_IO_DEBUG */


#ifdef PRISM2_CALLBACK
enum {
	/* Called when card is enabled */
	PRISM2_CALLBACK_ENABLE,

	/* Called when card is disabled */
	PRISM2_CALLBACK_DISABLE,

	/* Called when RX/TX starts/ends */
	PRISM2_CALLBACK_RX_START, PRISM2_CALLBACK_RX_END,
	PRISM2_CALLBACK_TX_START, PRISM2_CALLBACK_TX_END
};
void prism2_callback(local_info_t *local, int event);
#else /* PRISM2_CALLBACK */
#define prism2_callback(d, e) do { } while (0)
#endif /* PRISM2_CALLBACK */

#endif /* __KERNEL__ */

#endif /* HOSTAP_WLAN_H */