cregit-Linux how code gets into the kernel

Release 4.7 drivers/net/wireless/intersil/hostap/hostap_wlan.h

Directory: drivers/net/wireless/intersil/hostap
#ifndef HOSTAP_WLAN_H

#define HOSTAP_WLAN_H

#include <linux/interrupt.h>
#include <linux/wireless.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mutex.h>
#include <net/iw_handler.h>
#include <net/ieee80211_radiotap.h>
#include <net/lib80211.h>

#include "hostap_config.h"
#include "hostap_common.h"


#define MAX_PARM_DEVICES 8

#define PARM_MIN_MAX "1-" __MODULE_STRING(MAX_PARM_DEVICES)

#define DEF_INTS -1, -1, -1, -1, -1, -1, -1

#define GET_INT_PARM(var,idx) var[var[idx] < 0 ? 0 : idx]


/* Specific skb->protocol value that indicates that the packet already contains
 * txdesc header.
 * FIX: This might need own value that would be allocated especially for Prism2
 * txdesc; ETH_P_CONTROL is commented as "Card specific control frames".
 * However, these skb's should have only minimal path in the kernel side since
 * prism2_send_mgmt() sends these with dev_queue_xmit() to prism2_tx(). */

#define ETH_P_HOSTAP ETH_P_CONTROL

/* ARPHRD_IEEE80211_PRISM uses a bloated version of Prism2 RX frame header
 * (from linux-wlan-ng) */

struct linux_wlan_ng_val {
	
u32 did;
	

u16 status, len;
	
u32 data;
} 
__packed;


struct linux_wlan_ng_prism_hdr {
	

u32 msgcode, msglen;
	
char devname[16];
	





struct linux_wlan_ng_val hosttime, mactime, channel, rssi, sq, signal,
		



noise, rate, istx, frmlen;
} 
__packed;


struct linux_wlan_ng_cap_hdr {
	
__be32 version;
	
__be32 length;
	
__be64 mactime;
	
__be64 hosttime;
	
__be32 phytype;
	
__be32 channel;
	
__be32 datarate;
	
__be32 antenna;
	
__be32 priority;
	
__be32 ssi_type;
	
__be32 ssi_signal;
	
__be32 ssi_noise;
	
__be32 preamble;
	
__be32 encoding;
} 
__packed;


struct hostap_radiotap_rx {
	
struct ieee80211_radiotap_header hdr;
	
__le64 tsft;
	
u8 rate;
	
u8 padding;
	
__le16 chan_freq;
	
__le16 chan_flags;
	
s8 dbm_antsignal;
	
s8 dbm_antnoise;
} 
__packed;


#define LWNG_CAP_DID_BASE   (4 | (1 << 6)) 
/* section 4, group 1 */

#define LWNG_CAPHDR_VERSION 0x80211001


struct hfa384x_rx_frame {
	/* HFA384X RX frame descriptor */
	
__le16 status; /* HFA384X_RX_STATUS_ flags */
	
__le32 time; /* timestamp, 1 microsecond resolution */
	
u8 silence; /* 27 .. 154; seems to be 0 */
	
u8 signal; /* 27 .. 154 */
	
u8 rate; /* 10, 20, 55, or 110 */
	
u8 rxflow;
	
__le32 reserved;

	/* 802.11 */
	
__le16 frame_control;
	
__le16 duration_id;
	
u8 addr1[ETH_ALEN];
	
u8 addr2[ETH_ALEN];
	
u8 addr3[ETH_ALEN];
	
__le16 seq_ctrl;
	
u8 addr4[ETH_ALEN];
	
__le16 data_len;

	/* 802.3 */
	
u8 dst_addr[ETH_ALEN];
	
u8 src_addr[ETH_ALEN];
	
__be16 len;

	/* followed by frame data; max 2304 bytes */
} 
__packed;



struct hfa384x_tx_frame {
	/* HFA384X TX frame descriptor */
	
__le16 status; /* HFA384X_TX_STATUS_ flags */
	
__le16 reserved1;
	
__le16 reserved2;
	
__le32 sw_support;
	
u8 retry_count; /* not yet implemented */
	
u8 tx_rate; /* Host AP only; 0 = firmware, or 10, 20, 55, 110 */
	
__le16 tx_control; /* HFA384X_TX_CTRL_ flags */

	/* 802.11 */
	
__le16 frame_control; /* parts not used */
	
__le16 duration_id;
	
u8 addr1[ETH_ALEN];
	
u8 addr2[ETH_ALEN]; /* filled by firmware */
	
u8 addr3[ETH_ALEN];
	
__le16 seq_ctrl; /* filled by firmware */
	
u8 addr4[ETH_ALEN];
	
__le16 data_len;

	/* 802.3 */
	
u8 dst_addr[ETH_ALEN];
	
u8 src_addr[ETH_ALEN];
	
__be16 len;

	/* followed by frame data; max 2304 bytes */
} 
__packed;



struct hfa384x_rid_hdr
{
	
__le16 len;
	
__le16 rid;
} 
__packed;


/* Macro for converting signal levels (range 27 .. 154) to wireless ext
 * dBm value with some accuracy */

#define HFA384X_LEVEL_TO_dBm(v) 0x100 + (v) * 100 / 255 - 100


#define HFA384X_LEVEL_TO_dBm_sign(v) (v) * 100 / 255 - 100


struct hfa384x_scan_request {
	
__le16 channel_list;
	
__le16 txrate; /* HFA384X_RATES_* */
} 
__packed;


struct hfa384x_hostscan_request {
	
__le16 channel_list;
	
__le16 txrate;
	
__le16 target_ssid_len;
	
u8 target_ssid[32];
} 
__packed;


struct hfa384x_join_request {
	
u8 bssid[ETH_ALEN];
	
__le16 channel;
} 
__packed;


struct hfa384x_info_frame {
	
__le16 len;
	
__le16 type;
} 
__packed;


struct hfa384x_comm_tallies {
	
__le16 tx_unicast_frames;
	
__le16 tx_multicast_frames;
	
__le16 tx_fragments;
	
__le16 tx_unicast_octets;
	
__le16 tx_multicast_octets;
	
__le16 tx_deferred_transmissions;
	
__le16 tx_single_retry_frames;
	
__le16 tx_multiple_retry_frames;
	
__le16 tx_retry_limit_exceeded;
	
__le16 tx_discards;
	
__le16 rx_unicast_frames;
	
__le16 rx_multicast_frames;
	
__le16 rx_fragments;
	
__le16 rx_unicast_octets;
	
__le16 rx_multicast_octets;
	
__le16 rx_fcs_errors;
	
__le16 rx_discards_no_buffer;
	
__le16 tx_discards_wrong_sa;
	
__le16 rx_discards_wep_undecryptable;
	
__le16 rx_message_in_msg_fragments;
	
__le16 rx_message_in_bad_msg_fragments;
} 
__packed;


struct hfa384x_comm_tallies32 {
	
__le32 tx_unicast_frames;
	
__le32 tx_multicast_frames;
	
__le32 tx_fragments;
	
__le32 tx_unicast_octets;
	
__le32 tx_multicast_octets;
	
__le32 tx_deferred_transmissions;
	
__le32 tx_single_retry_frames;
	
__le32 tx_multiple_retry_frames;
	
__le32 tx_retry_limit_exceeded;
	
__le32 tx_discards;
	
__le32 rx_unicast_frames;
	
__le32 rx_multicast_frames;
	
__le32 rx_fragments;
	
__le32 rx_unicast_octets;
	
__le32 rx_multicast_octets;
	
__le32 rx_fcs_errors;
	
__le32 rx_discards_no_buffer;
	
__le32 tx_discards_wrong_sa;
	
__le32 rx_discards_wep_undecryptable;
	
__le32 rx_message_in_msg_fragments;
	
__le32 rx_message_in_bad_msg_fragments;
} 
__packed;


struct hfa384x_scan_result_hdr {
	
__le16 reserved;
	
__le16 scan_reason;

#define HFA384X_SCAN_IN_PROGRESS 0 /* no results available yet */

#define HFA384X_SCAN_HOST_INITIATED 1

#define HFA384X_SCAN_FIRMWARE_INITIATED 2

#define HFA384X_SCAN_INQUIRY_FROM_HOST 3
} 
__packed;


#define HFA384X_SCAN_MAX_RESULTS 32


struct hfa384x_scan_result {
	
__le16 chid;
	
__le16 anl;
	
__le16 sl;
	
u8 bssid[ETH_ALEN];
	
__le16 beacon_interval;
	
__le16 capability;
	
__le16 ssid_len;
	
u8 ssid[32];
	
u8 sup_rates[10];
	
__le16 rate;
} 
__packed;


struct hfa384x_hostscan_result {
	
__le16 chid;
	
__le16 anl;
	
__le16 sl;
	
u8 bssid[ETH_ALEN];
	
__le16 beacon_interval;
	
__le16 capability;
	
__le16 ssid_len;
	
u8 ssid[32];
	
u8 sup_rates[10];
	
__le16 rate;
	
__le16 atim;
} 
__packed;


struct comm_tallies_sums {
	
unsigned int tx_unicast_frames;
	
unsigned int tx_multicast_frames;
	
unsigned int tx_fragments;
	
unsigned int tx_unicast_octets;
	
unsigned int tx_multicast_octets;
	
unsigned int tx_deferred_transmissions;
	
unsigned int tx_single_retry_frames;
	
unsigned int tx_multiple_retry_frames;
	
unsigned int tx_retry_limit_exceeded;
	
unsigned int tx_discards;
	
unsigned int rx_unicast_frames;
	
unsigned int rx_multicast_frames;
	
unsigned int rx_fragments;
	
unsigned int rx_unicast_octets;
	
unsigned int rx_multicast_octets;
	
unsigned int rx_fcs_errors;
	
unsigned int rx_discards_no_buffer;
	
unsigned int tx_discards_wrong_sa;
	
unsigned int rx_discards_wep_undecryptable;
	
unsigned int rx_message_in_msg_fragments;
	
unsigned int rx_message_in_bad_msg_fragments;
};



struct hfa384x_regs {
	
u16 cmd;
	
u16 evstat;
	
u16 offset0;
	
u16 offset1;
	
u16 swsupport0;
};


#if defined(PRISM2_PCCARD) || defined(PRISM2_PLX)
/* I/O ports for HFA384X Controller access */

#define HFA384X_CMD_OFF 0x00

#define HFA384X_PARAM0_OFF 0x02

#define HFA384X_PARAM1_OFF 0x04

#define HFA384X_PARAM2_OFF 0x06

#define HFA384X_STATUS_OFF 0x08

#define HFA384X_RESP0_OFF 0x0A

#define HFA384X_RESP1_OFF 0x0C

#define HFA384X_RESP2_OFF 0x0E

#define HFA384X_INFOFID_OFF 0x10

#define HFA384X_CONTROL_OFF 0x14

#define HFA384X_SELECT0_OFF 0x18

#define HFA384X_SELECT1_OFF 0x1A

#define HFA384X_OFFSET0_OFF 0x1C

#define HFA384X_OFFSET1_OFF 0x1E

#define HFA384X_RXFID_OFF 0x20

#define HFA384X_ALLOCFID_OFF 0x22

#define HFA384X_TXCOMPLFID_OFF 0x24

#define HFA384X_SWSUPPORT0_OFF 0x28

#define HFA384X_SWSUPPORT1_OFF 0x2A

#define HFA384X_SWSUPPORT2_OFF 0x2C

#define HFA384X_EVSTAT_OFF 0x30

#define HFA384X_INTEN_OFF 0x32

#define HFA384X_EVACK_OFF 0x34

#define HFA384X_DATA0_OFF 0x36

#define HFA384X_DATA1_OFF 0x38

#define HFA384X_AUXPAGE_OFF 0x3A

#define HFA384X_AUXOFFSET_OFF 0x3C

#define HFA384X_AUXDATA_OFF 0x3E
#endif /* PRISM2_PCCARD || PRISM2_PLX */

#ifdef PRISM2_PCI
/* Memory addresses for ISL3874 controller access */

#define HFA384X_CMD_OFF 0x00

#define HFA384X_PARAM0_OFF 0x04

#define HFA384X_PARAM1_OFF 0x08

#define HFA384X_PARAM2_OFF 0x0C

#define HFA384X_STATUS_OFF 0x10

#define HFA384X_RESP0_OFF 0x14

#define HFA384X_RESP1_OFF 0x18

#define HFA384X_RESP2_OFF 0x1C

#define HFA384X_INFOFID_OFF 0x20

#define HFA384X_CONTROL_OFF 0x28

#define HFA384X_SELECT0_OFF 0x30

#define HFA384X_SELECT1_OFF 0x34

#define HFA384X_OFFSET0_OFF 0x38

#define HFA384X_OFFSET1_OFF 0x3C

#define HFA384X_RXFID_OFF 0x40

#define HFA384X_ALLOCFID_OFF 0x44

#define HFA384X_TXCOMPLFID_OFF 0x48

#define HFA384X_PCICOR_OFF 0x4C

#define HFA384X_SWSUPPORT0_OFF 0x50

#define HFA384X_SWSUPPORT1_OFF 0x54

#define HFA384X_SWSUPPORT2_OFF 0x58

#define HFA384X_PCIHCR_OFF 0x5C

#define HFA384X_EVSTAT_OFF 0x60

#define HFA384X_INTEN_OFF 0x64

#define HFA384X_EVACK_OFF 0x68

#define HFA384X_DATA0_OFF 0x6C

#define HFA384X_DATA1_OFF 0x70

#define HFA384X_AUXPAGE_OFF 0x74

#define HFA384X_AUXOFFSET_OFF 0x78

#define HFA384X_AUXDATA_OFF 0x7C

#define HFA384X_PCI_M0_ADDRH_OFF 0x80

#define HFA384X_PCI_M0_ADDRL_OFF 0x84

#define HFA384X_PCI_M0_LEN_OFF 0x88

#define HFA384X_PCI_M0_CTL_OFF 0x8C

#define HFA384X_PCI_STATUS_OFF 0x98

#define HFA384X_PCI_M1_ADDRH_OFF 0xA0

#define HFA384X_PCI_M1_ADDRL_OFF 0xA4

#define HFA384X_PCI_M1_LEN_OFF 0xA8

#define HFA384X_PCI_M1_CTL_OFF 0xAC

/* PCI bus master control bits (these are undocumented; based on guessing and
 * experimenting..) */

#define HFA384X_PCI_CTL_FROM_BAP (BIT(5) | BIT(1) | BIT(0))

#define HFA384X_PCI_CTL_TO_BAP (BIT(5) | BIT(0))

#endif /* PRISM2_PCI */


/* Command codes for CMD reg. */

#define HFA384X_CMDCODE_INIT 0x00

#define HFA384X_CMDCODE_ENABLE 0x01

#define HFA384X_CMDCODE_DISABLE 0x02

#define HFA384X_CMDCODE_ALLOC 0x0A

#define HFA384X_CMDCODE_TRANSMIT 0x0B

#define HFA384X_CMDCODE_INQUIRE 0x11

#define HFA384X_CMDCODE_ACCESS 0x21

#define HFA384X_CMDCODE_ACCESS_WRITE (0x21 | BIT(8))

#define HFA384X_CMDCODE_DOWNLOAD 0x22

#define HFA384X_CMDCODE_READMIF 0x30

#define HFA384X_CMDCODE_WRITEMIF 0x31

#define HFA384X_CMDCODE_TEST 0x38


#define HFA384X_CMDCODE_MASK 0x3F

/* Test mode operations */

#define HFA384X_TEST_CHANGE_CHANNEL 0x08

#define HFA384X_TEST_MONITOR 0x0B

#define HFA384X_TEST_STOP 0x0F

#define HFA384X_TEST_CFG_BITS 0x15

#define HFA384X_TEST_CFG_BIT_ALC BIT(3)


#define HFA384X_CMD_BUSY BIT(15)


#define HFA384X_CMD_TX_RECLAIM BIT(8)


#define HFA384X_OFFSET_ERR BIT(14)

#define HFA384X_OFFSET_BUSY BIT(15)


/* ProgMode for download command */

#define HFA384X_PROGMODE_DISABLE 0

#define HFA384X_PROGMODE_ENABLE_VOLATILE 1

#define HFA384X_PROGMODE_ENABLE_NON_VOLATILE 2

#define HFA384X_PROGMODE_PROGRAM_NON_VOLATILE 3


#define HFA384X_AUX_MAGIC0 0xfe01

#define HFA384X_AUX_MAGIC1 0xdc23

#define HFA384X_AUX_MAGIC2 0xba45


#define HFA384X_AUX_PORT_DISABLED 0

#define HFA384X_AUX_PORT_DISABLE BIT(14)

#define HFA384X_AUX_PORT_ENABLE BIT(15)

#define HFA384X_AUX_PORT_ENABLED (BIT(14) | BIT(15))

#define HFA384X_AUX_PORT_MASK (BIT(14) | BIT(15))


#define PRISM2_PDA_SIZE 1024


/* Events; EvStat, Interrupt mask (IntEn), and acknowledge bits (EvAck) */

#define HFA384X_EV_TICK BIT(15)

#define HFA384X_EV_WTERR BIT(14)

#define HFA384X_EV_INFDROP BIT(13)
#ifdef PRISM2_PCI

#define HFA384X_EV_PCI_M1 BIT(9)

#define HFA384X_EV_PCI_M0 BIT(8)
#endif /* PRISM2_PCI */

#define HFA384X_EV_INFO BIT(7)

#define HFA384X_EV_DTIM BIT(5)

#define HFA384X_EV_CMD BIT(4)

#define HFA384X_EV_ALLOC BIT(3)

#define HFA384X_EV_TXEXC BIT(2)

#define HFA384X_EV_TX BIT(1)

#define HFA384X_EV_RX BIT(0)


/* HFA384X Information frames */

#define HFA384X_INFO_HANDOVERADDR 0xF000 
/* AP f/w ? */

#define HFA384X_INFO_HANDOVERDEAUTHADDR 0xF001 
/* AP f/w 1.3.7 */

#define HFA384X_INFO_COMMTALLIES 0xF100

#define HFA384X_INFO_SCANRESULTS 0xF101

#define HFA384X_INFO_CHANNELINFORESULTS 0xF102 
/* AP f/w only */

#define HFA384X_INFO_HOSTSCANRESULTS 0xF103

#define HFA384X_INFO_LINKSTATUS 0xF200

#define HFA384X_INFO_ASSOCSTATUS 0xF201 
/* ? */

#define HFA384X_INFO_AUTHREQ 0xF202 
/* ? */

#define HFA384X_INFO_PSUSERCNT 0xF203 
/* ? */

#define HFA384X_INFO_KEYIDCHANGED 0xF204 
/* ? */


enum { HFA384X_LINKSTATUS_CONNECTED = 1,
       
HFA384X_LINKSTATUS_DISCONNECTED = 2,
       
HFA384X_LINKSTATUS_AP_CHANGE = 3,
       
HFA384X_LINKSTATUS_AP_OUT_OF_RANGE = 4,
       
HFA384X_LINKSTATUS_AP_IN_RANGE = 5,
       
HFA384X_LINKSTATUS_ASSOC_FAILED = 6 };



enum { HFA384X_PORTTYPE_BSS = 1, HFA384X_PORTTYPE_WDS = 2,
       

HFA384X_PORTTYPE_PSEUDO_IBSS = 3, HFA384X_PORTTYPE_IBSS = 0,
       
HFA384X_PORTTYPE_HOSTAP = 6 };


#define HFA384X_RATES_1MBPS BIT(0)

#define HFA384X_RATES_2MBPS BIT(1)

#define HFA384X_RATES_5MBPS BIT(2)

#define HFA384X_RATES_11MBPS BIT(3)


#define HFA384X_ROAMING_FIRMWARE 1

#define HFA384X_ROAMING_HOST 2

#define HFA384X_ROAMING_DISABLED 3


#define HFA384X_WEPFLAGS_PRIVACYINVOKED BIT(0)

#define HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED BIT(1)

#define HFA384X_WEPFLAGS_HOSTENCRYPT BIT(4)

#define HFA384X_WEPFLAGS_HOSTDECRYPT BIT(7)


#define HFA384X_RX_STATUS_MSGTYPE (BIT(15) | BIT(14) | BIT(13))

#define HFA384X_RX_STATUS_PCF BIT(12)

#define HFA384X_RX_STATUS_MACPORT (BIT(10) | BIT(9) | BIT(8))

#define HFA384X_RX_STATUS_UNDECR BIT(1)

#define HFA384X_RX_STATUS_FCSERR BIT(0)


#define HFA384X_RX_STATUS_GET_MSGTYPE(s) \
(((s) & HFA384X_RX_STATUS_MSGTYPE) >> 13)

#define HFA384X_RX_STATUS_GET_MACPORT(s) \
(((s) & HFA384X_RX_STATUS_MACPORT) >> 8)



enum { HFA384X_RX_MSGTYPE_NORMAL = 0, HFA384X_RX_MSGTYPE_RFC1042 = 1,
       

HFA384X_RX_MSGTYPE_BRIDGETUNNEL = 2, HFA384X_RX_MSGTYPE_MGMT = 4 };



#define HFA384X_TX_CTRL_ALT_RTRY BIT(5)

#define HFA384X_TX_CTRL_802_11 BIT(3)

#define HFA384X_TX_CTRL_802_3 0

#define HFA384X_TX_CTRL_TX_EX BIT(2)

#define HFA384X_TX_CTRL_TX_OK BIT(1)


#define HFA384X_TX_STATUS_RETRYERR BIT(0)

#define HFA384X_TX_STATUS_AGEDERR BIT(1)

#define HFA384X_TX_STATUS_DISCON BIT(2)

#define HFA384X_TX_STATUS_FORMERR BIT(3)

/* HFA3861/3863 (BBP) Control Registers */

#define HFA386X_CR_TX_CONFIGURE 0x12 
/* CR9 */

#define HFA386X_CR_RX_CONFIGURE 0x14 
/* CR10 */

#define HFA386X_CR_A_D_TEST_MODES2 0x1A 
/* CR13 */

#define HFA386X_CR_MANUAL_TX_POWER 0x3E 
/* CR31 */

#define HFA386X_CR_MEASURED_TX_POWER 0x74 
/* CR58 */


#ifdef __KERNEL__


#define PRISM2_TXFID_COUNT 8

#define PRISM2_DATA_MAXLEN 2304

#define PRISM2_TXFID_LEN (PRISM2_DATA_MAXLEN + sizeof(struct hfa384x_tx_frame))

#define PRISM2_TXFID_EMPTY 0xffff

#define PRISM2_TXFID_RESERVED 0xfffe

#define PRISM2_DUMMY_FID 0xffff

#define MAX_SSID_LEN 32

#define MAX_NAME_LEN 32 
/* this is assumed to be equal to MAX_SSID_LEN */


#define PRISM2_DUMP_RX_HDR BIT(0)

#define PRISM2_DUMP_TX_HDR BIT(1)

#define PRISM2_DUMP_TXEXC_HDR BIT(2)


struct hostap_tx_callback_info {
	
u16 idx;
	
void (*func)(struct sk_buff *, int ok, void *);
	
void *data;
	
struct hostap_tx_callback_info *next;
};


/* IEEE 802.11 requires that STA supports concurrent reception of at least
 * three fragmented frames. This define can be increased to support more
 * concurrent frames, but it should be noted that each entry can consume about
 * 2 kB of RAM and increasing cache size will slow down frame reassembly. */

#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);
	
const struct file_operations *read_aux_fops;

	
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, irq_init_lock;
	
struct mutex rid_bap_mtx;
	
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
	
unsigned 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 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, PRISM2_MONITOR_RADIOTAP = 3
	} 
monitor_type;
	
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 lib80211_crypt_info crypt_info;

	
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;
	
unsigned 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[ETH_ALEN]; /* 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; /* subtract 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 48-byte limit.
 * THE PADDING THIS STARTS WITH IS A HORRIBLE HACK THAT SHOULD NOT LIVE
 * TO SEE THE DAY.
 */

struct hostap_skb_tx_data {
	
unsigned int __padding_for_default_qdiscs;
	
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;
}



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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);
}


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#else /* PRISM2_IO_DEBUG */




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


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


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#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 */

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Directory: drivers/net/wireless/intersil/hostap



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