hostap_wlan.h

linux-2.6.15.6

#define PRISM2_FRAG_CACHE_LEN 4

struct prism2_frag_entry {
	unsigned long first_frag_time;
	unsigned int seq;
	unsigned int last_frag;
	struct sk_buff *skb;
	u8 src_addr[ETH_ALEN];
	u8 dst_addr[ETH_ALEN];
};


struct hostap_cmd_queue {
	struct list_head list;
	wait_queue_head_t compl;
	volatile enum { CMD_SLEEP, CMD_CALLBACK, CMD_COMPLETED } type;
	void (*callback)(struct net_device *dev, long context, u16 resp0,
			 u16 res);
	long context;
	u16 cmd, param0, param1;
	u16 resp0, res;
	volatile int issued, issuing;

	atomic_t usecnt;
	int del_req;
};

/* options for hw_shutdown */
#define HOSTAP_HW_NO_DISABLE BIT(0)
#define HOSTAP_HW_ENABLE_CMDCOMPL BIT(1)

typedef struct local_info local_info_t;

struct prism2_helper_functions {
	/* these functions are defined in hardware model specific files
	 * (hostap_{cs,plx,pci}.c */
	int (*card_present)(local_info_t *local);
	void (*cor_sreset)(local_info_t *local);
	void (*genesis_reset)(local_info_t *local, int hcr);

	/* the following functions are from hostap_hw.c, but they may have some
	 * hardware model specific code */

	/* FIX: low-level commands like cmd might disappear at some point to
	 * make it easier to change them if needed (e.g., cmd would be replaced
	 * with write_mif/read_mif/testcmd/inquire); at least get_rid and
	 * set_rid might move to hostap_{cs,plx,pci}.c */
	int (*cmd)(struct net_device *dev, u16 cmd, u16 param0, u16 *param1,
		   u16 *resp0);
	void (*read_regs)(struct net_device *dev, struct hfa384x_regs *regs);
	int (*get_rid)(struct net_device *dev, u16 rid, void *buf, int len,
		       int exact_len);
	int (*set_rid)(struct net_device *dev, u16 rid, void *buf, int len);
	int (*hw_enable)(struct net_device *dev, int initial);
	int (*hw_config)(struct net_device *dev, int initial);
	void (*hw_reset)(struct net_device *dev);
	void (*hw_shutdown)(struct net_device *dev, int no_disable);
	int (*reset_port)(struct net_device *dev);
	void (*schedule_reset)(local_info_t *local);
	int (*download)(local_info_t *local,
			struct prism2_download_param *param);
	int (*tx)(struct sk_buff *skb, struct net_device *dev);
	int (*set_tim)(struct net_device *dev, int aid, int set);
	int (*read_aux)(struct net_device *dev, unsigned addr, int len,
			u8 *buf);

	int need_tx_headroom; /* number of bytes of headroom needed before
			       * IEEE 802.11 header */
	enum { HOSTAP_HW_PCCARD, HOSTAP_HW_PLX, HOSTAP_HW_PCI } hw_type;
};


struct prism2_download_data {
	u32 dl_cmd;
	u32 start_addr;
	u32 num_areas;
	struct prism2_download_data_area {
		u32 addr; /* wlan card address */
		u32 len;
		u8 *data; /* allocated data */
	} data[0];
};


#define HOSTAP_MAX_BSS_COUNT 64
#define MAX_WPA_IE_LEN 64

struct hostap_bss_info {
	struct list_head list;
	unsigned long last_update;
	unsigned int count;
	u8 bssid[ETH_ALEN];
	u16 capab_info;
	u8 ssid[32];
	size_t ssid_len;
	u8 wpa_ie[MAX_WPA_IE_LEN];
	size_t wpa_ie_len;
	u8 rsn_ie[MAX_WPA_IE_LEN];
	size_t rsn_ie_len;
	int chan;
	int included;
};


/* Per radio private Host AP data - shared by all net devices interfaces used
 * by each radio (wlan#, wlan#ap, wlan#sta, WDS).
 * ((struct hostap_interface *) netdev_priv(dev))->local points to this
 * structure. */
struct local_info {
	struct module *hw_module;
	int card_idx;
	int dev_enabled;
	int master_dev_auto_open; /* was master device opened automatically */
	int num_dev_open; /* number of open devices */
	struct net_device *dev; /* master radio device */
	struct net_device *ddev; /* main data device */
	struct list_head hostap_interfaces; /* Host AP interface list (contains
					     * struct hostap_interface entries)
					     */
	rwlock_t iface_lock; /* hostap_interfaces read lock; use write lock
			      * when removing entries from the list.
			      * TX and RX paths can use read lock. */
	spinlock_t cmdlock, baplock, lock;
	struct semaphore rid_bap_sem;
	u16 infofid; /* MAC buffer id for info frame */
	/* txfid, intransmitfid, next_txtid, and next_alloc are protected by
	 * txfidlock */
	spinlock_t txfidlock;
	int txfid_len; /* length of allocated TX buffers */
	u16 txfid[PRISM2_TXFID_COUNT]; /* buffer IDs for TX frames */
	/* buffer IDs for intransmit frames or PRISM2_TXFID_EMPTY if
	 * corresponding txfid is free for next TX frame */
	u16 intransmitfid[PRISM2_TXFID_COUNT];
	int next_txfid; /* index to the next txfid to be checked for
			 * availability */
	int next_alloc; /* index to the next intransmitfid to be checked for
			 * allocation events */

	/* bitfield for atomic bitops */
#define HOSTAP_BITS_TRANSMIT 0
#define HOSTAP_BITS_BAP_TASKLET 1
#define HOSTAP_BITS_BAP_TASKLET2 2
	long bits;

	struct ap_data *ap;

	char essid[MAX_SSID_LEN + 1];
	char name[MAX_NAME_LEN + 1];
	int name_set;
	u16 channel_mask; /* mask of allowed channels */
	u16 scan_channel_mask; /* mask of channels to be scanned */
	struct comm_tallies_sums comm_tallies;
	struct net_device_stats stats;
	struct proc_dir_entry *proc;
	int iw_mode; /* operating mode (IW_MODE_*) */
	int pseudo_adhoc; /* 0: IW_MODE_ADHOC is real 802.11 compliant IBSS
			   * 1: IW_MODE_ADHOC is "pseudo IBSS" */
	char bssid[ETH_ALEN];
	int channel;
	int beacon_int;
	int dtim_period;
	int mtu;
	int frame_dump; /* dump RX/TX frame headers, PRISM2_DUMP_ flags */
	int fw_tx_rate_control;
	u16 tx_rate_control;
	u16 basic_rates;
	int hw_resetting;
	int hw_ready;
	int hw_reset_tries; /* how many times reset has been tried */
	int hw_downloading;
	int shutdown;
	int pri_only;
	int no_pri; /* no PRI f/w present */
	int sram_type; /* 8 = x8 SRAM, 16 = x16 SRAM, -1 = unknown */

	enum {
		PRISM2_TXPOWER_AUTO = 0, PRISM2_TXPOWER_OFF,
		PRISM2_TXPOWER_FIXED, PRISM2_TXPOWER_UNKNOWN
	} txpower_type;
	int txpower; /* if txpower_type == PRISM2_TXPOWER_FIXED */

	/* command queue for hfa384x_cmd(); protected with cmdlock */
	struct list_head cmd_queue;
	/* max_len for cmd_queue; in addition, cmd_callback can use two
	 * additional entries to prevent sleeping commands from stopping
	 * transmits */
#define HOSTAP_CMD_QUEUE_MAX_LEN 16
	int cmd_queue_len; /* number of entries in cmd_queue */

	/* if card timeout is detected in interrupt context, reset_queue is
	 * used to schedule card reseting to be done in user context */
	struct work_struct reset_queue;

	/* For scheduling a change of the promiscuous mode RID */
	int is_promisc;
	struct work_struct set_multicast_list_queue;

	struct work_struct 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 ieee80211_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;

	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 */
	struct tasklet_struct bap_tasklet;

	struct tasklet_struct 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
						      */

	struct tasklet_struct rx_tasklet;
	struct sk_buff_head rx_list;

	struct tasklet_struct 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;
	struct work_struct 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) */
	struct work_struct 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 */

	/* Pointer to hardware model specific (cs,pci,plx) private data. */
	void *hw_priv;
};


/* Per interface private Host AP data
 * Allocated for each net device that Host AP uses (wlan#, wlan#ap, wlan#sta,
 * WDS) and netdev_priv(dev) 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;
	struct iw_spy_data spy_data; /* iwspy support */
	struct iw_public_data wireless_data;

	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 = netdev_priv(dev);
	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 = netdev_priv(dev);
	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 */