diff options
Diffstat (limited to 'drivers/staging/at76_usb/at76_usb.h')
| -rw-r--r-- | drivers/staging/at76_usb/at76_usb.h | 227 |
1 files changed, 169 insertions, 58 deletions
diff --git a/drivers/staging/at76_usb/at76_usb.h b/drivers/staging/at76_usb/at76_usb.h index 8bb352f16d45..b20be9da1fa1 100644 --- a/drivers/staging/at76_usb/at76_usb.h +++ b/drivers/staging/at76_usb/at76_usb.h @@ -34,6 +34,23 @@ enum board_type { BOARD_505AMX = 8 }; +/* our private ioctl's */ +/* preamble length (0 - long, 1 - short, 2 - auto) */ +#define AT76_SET_SHORT_PREAMBLE (SIOCIWFIRSTPRIV + 0) +#define AT76_GET_SHORT_PREAMBLE (SIOCIWFIRSTPRIV + 1) +/* which debug channels are enabled */ +#define AT76_SET_DEBUG (SIOCIWFIRSTPRIV + 2) +#define AT76_GET_DEBUG (SIOCIWFIRSTPRIV + 3) +/* power save mode (incl. the Atmel proprietary smart save mode) */ +#define AT76_SET_POWERSAVE_MODE (SIOCIWFIRSTPRIV + 4) +#define AT76_GET_POWERSAVE_MODE (SIOCIWFIRSTPRIV + 5) +/* min and max channel times for scan */ +#define AT76_SET_SCAN_TIMES (SIOCIWFIRSTPRIV + 6) +#define AT76_GET_SCAN_TIMES (SIOCIWFIRSTPRIV + 7) +/* scan mode (0 - active, 1 - passive) */ +#define AT76_SET_SCAN_MODE (SIOCIWFIRSTPRIV + 8) +#define AT76_GET_SCAN_MODE (SIOCIWFIRSTPRIV + 9) + #define CMD_STATUS_IDLE 0x00 #define CMD_STATUS_COMPLETE 0x01 #define CMD_STATUS_UNKNOWN 0x02 @@ -65,7 +82,6 @@ enum board_type { #define MIB_MAC 0x03 #define MIB_MAC_MGMT 0x05 #define MIB_MAC_WEP 0x06 -#define MIB_MAC_ENCRYPTION 0x06 #define MIB_PHY 0x07 #define MIB_FW_VERSION 0x08 #define MIB_MDOMAIN 0x09 @@ -90,26 +106,6 @@ enum board_type { #define AT76_PM_ON 2 #define AT76_PM_SMART 3 -/* cipher values for encryption keys */ -#define CIPHER_NONE 0 /* this value is only guessed */ -#define CIPHER_WEP64 1 -#define CIPHER_TKIP 2 -#define CIPHER_CCMP 3 -#define CIPHER_CCX 4 /* for consistency sake only */ -#define CIPHER_WEP128 5 - -/* bit flags key types for encryption keys */ -#define KEY_PAIRWISE 2 -#define KEY_TX 4 - -#define CIPHER_KEYS (4) -#define CIPHER_KEY_LEN (40) - -struct key_config { - u8 cipher; - u8 keylen; -}; - struct hwcfg_r505 { u8 cr39_values[14]; u8 reserved1[14]; @@ -151,9 +147,6 @@ union at76_hwcfg { #define WEP_SMALL_KEY_LEN (40 / 8) #define WEP_LARGE_KEY_LEN (104 / 8) -#define WEP_KEYS (4) - - struct at76_card_config { u8 exclude_unencrypted; @@ -168,7 +161,7 @@ struct at76_card_config { u8 privacy_invoked; u8 wep_default_key_id; /* 0..3 */ u8 current_ssid[32]; - u8 wep_default_key_value[4][WEP_LARGE_KEY_LEN]; + u8 wep_default_key_value[4][WEP_KEY_LEN]; u8 ssid_len; u8 short_preamble; __le16 beacon_period; @@ -193,7 +186,7 @@ struct at76_rx_buffer { u8 link_quality; u8 noise_level; __le32 rx_time; - u8 packet[IEEE80211_MAX_FRAG_THRESHOLD]; + u8 packet[IEEE80211_FRAME_LEN + IEEE80211_FCS_LEN]; } __attribute__((packed)); /* Length of Atmel-specific Tx header before 802.11 frame */ @@ -203,11 +196,8 @@ struct at76_tx_buffer { __le16 wlength; u8 tx_rate; u8 padding; - u8 key_id; - u8 cipher_type; - u8 cipher_length; - u8 reserved; - u8 packet[IEEE80211_MAX_FRAG_THRESHOLD]; + u8 reserved[4]; + u8 packet[IEEE80211_FRAME_LEN + IEEE80211_FCS_LEN]; } __attribute__((packed)); /* defines for scan_type below */ @@ -254,7 +244,6 @@ struct set_mib_buffer { u8 byte; __le16 word; u8 addr[ETH_ALEN]; - u8 data[256]; /* we need more space for mib_mac_encryption */ } data; } __attribute__((packed)); @@ -328,24 +317,10 @@ struct mib_mac_wep { u8 exclude_unencrypted; __le32 wep_icv_error_count; __le32 wep_excluded_count; - u8 wep_default_keyvalue[WEP_KEYS][WEP_LARGE_KEY_LEN]; + u8 wep_default_keyvalue[WEP_KEYS][WEP_KEY_LEN]; u8 encryption_level; /* 1 for 40bit, 2 for 104bit encryption */ } __attribute__((packed)); -struct mib_mac_encryption { - u8 cipher_default_keyvalue[CIPHER_KEYS][CIPHER_KEY_LEN]; - u8 tkip_bssid[6]; - u8 privacy_invoked; - u8 cipher_default_key_id; - u8 cipher_default_group_key_id; - u8 exclude_unencrypted; - u8 wep_encryption_type; - u8 ckip_key_permutation; /* bool */ - __le32 wep_icv_error_count; - __le32 wep_excluded_count; - u8 key_rsc[CIPHER_KEYS][8]; -} __attribute__((packed)); - struct mib_phy { __le32 ed_threshold; @@ -389,6 +364,16 @@ struct at76_fw_header { __le32 ext_fw_len; /* external firmware image length */ } __attribute__((packed)); +enum mac_state { + MAC_INIT, + MAC_SCANNING, + MAC_AUTH, + MAC_ASSOC, + MAC_JOINING, + MAC_CONNECTED, + MAC_OWN_IBSS +}; + /* a description of a regulatory domain and the allowed channels */ struct reg_domain { u16 code; @@ -396,6 +381,47 @@ struct reg_domain { u32 channel_map; /* if bit N is set, channel (N+1) is allowed */ }; +/* how long do we keep a (I)BSS in the bss_list in jiffies + this should be long enough for the user to retrieve the table + (by iwlist ?) after the device started, because all entries from + other channels than the one the device locks on get removed, too */ +#define BSS_LIST_TIMEOUT (120 * HZ) +/* struct to store BSS info found during scan */ +#define BSS_LIST_MAX_RATE_LEN 32 /* 32 rates should be enough ... */ + +struct bss_info { + struct list_head list; + + u8 bssid[ETH_ALEN]; /* bssid */ + u8 ssid[IW_ESSID_MAX_SIZE]; /* essid */ + u8 ssid_len; /* length of ssid above */ + u8 channel; + u16 capa; /* BSS capabilities */ + u16 beacon_interval; /* beacon interval, Kus (1024 microseconds) */ + u8 rates[BSS_LIST_MAX_RATE_LEN]; /* supported rates in units of + 500 kbps, ORed with 0x80 for + basic rates */ + u8 rates_len; + + /* quality of received beacon */ + u8 rssi; + u8 link_qual; + u8 noise_level; + + unsigned long last_rx; /* time (jiffies) of last beacon received */ +}; + +/* a rx data buffer to collect rx fragments */ +struct rx_data_buf { + u8 sender[ETH_ALEN]; /* sender address */ + u16 seqnr; /* sequence number */ + u16 fragnr; /* last fragment received */ + unsigned long last_rx; /* jiffies of last rx */ + struct sk_buff *skb; /* == NULL if entry is free */ +}; + +#define NR_RX_DATA_BUF 8 + /* Data for one loaded firmware file */ struct fwentry { const char *const fwname; @@ -412,9 +438,11 @@ struct fwentry { struct at76_priv { struct usb_device *udev; /* USB device pointer */ + struct net_device *netdev; /* net device pointer */ + struct net_device_stats stats; /* net device stats */ + struct iw_statistics wstats; /* wireless stats */ struct sk_buff *rx_skb; /* skbuff for receiving data */ - struct sk_buff *tx_skb; /* skbuff for transmitting data */ void *bulk_out_buffer; /* buffer for sending data */ struct urb *tx_urb; /* URB for sending data */ @@ -426,17 +454,26 @@ struct at76_priv { struct mutex mtx; /* locks this structure */ /* work queues */ + struct work_struct work_assoc_done; + struct work_struct work_join; + struct work_struct work_new_bss; + struct work_struct work_start_scan; struct work_struct work_set_promisc; struct work_struct work_submit_rx; - struct delayed_work dwork_hw_scan; + struct delayed_work dwork_restart; + struct delayed_work dwork_get_scan; + struct delayed_work dwork_beacon; + struct delayed_work dwork_auth; + struct delayed_work dwork_assoc; struct tasklet_struct rx_tasklet; /* the WEP stuff */ int wep_enabled; /* 1 if WEP is enabled */ int wep_key_id; /* key id to be used */ - u8 wep_keys[WEP_KEYS][WEP_LARGE_KEY_LEN]; /* WEP keys */ - u8 wep_keys_len[WEP_KEYS]; /* length of WEP keys */ + u8 wep_keys[WEP_KEYS][WEP_KEY_LEN]; /* the four WEP keys, + 5 or 13 bytes are used */ + u8 wep_keys_len[WEP_KEYS]; /* the length of the above keys */ int channel; int iw_mode; @@ -458,13 +495,44 @@ struct at76_priv { int scan_mode; /* SCAN_TYPE_ACTIVE, SCAN_TYPE_PASSIVE */ int scan_need_any; /* if set, need to scan for any ESSID */ + /* the list we got from scanning */ + spinlock_t bss_list_spinlock; /* protects bss_list operations */ + struct list_head bss_list; /* list of BSS we got beacons from */ + struct timer_list bss_list_timer; /* timer to purge old entries + from bss_list */ + struct bss_info *curr_bss; /* current BSS */ u16 assoc_id; /* current association ID, if associated */ + u8 wanted_bssid[ETH_ALEN]; + int wanted_bssid_valid; /* != 0 if wanted_bssid is to be used */ + + /* some data for infrastructure mode only */ + spinlock_t mgmt_spinlock; /* this spinlock protects access to + next_mgmt_bulk */ + + struct at76_tx_buffer *next_mgmt_bulk; /* pending management msg to + send via bulk out */ + enum mac_state mac_state; + enum { + SCAN_IDLE, + SCAN_IN_PROGRESS, + SCAN_COMPLETED + } scan_state; + time_t last_scan; + + int retries; /* remaining retries in case of timeout when + * sending AuthReq or AssocReq */ u8 pm_mode; /* power management mode */ u32 pm_period; /* power management period in microseconds */ struct reg_domain const *domain; /* reg domain description */ + /* iwspy support */ + spinlock_t spy_spinlock; + struct iw_spy_data spy_data; + + struct iw_public_data wireless_data; + /* These fields contain HW config provided by the device (not all of * these fields are used by all board types) */ u8 mac_addr[ETH_ALEN]; @@ -472,6 +540,9 @@ struct at76_priv { struct at76_card_config card_config; + /* store rx fragments until complete */ + struct rx_data_buf rx_data[NR_RX_DATA_BUF]; + enum board_type board_type; struct mib_fw_version fw_version; @@ -479,20 +550,58 @@ struct at76_priv { unsigned int netdev_registered:1; struct set_mib_buffer mib_buf; /* global buffer for set_mib calls */ + /* beacon counting */ int beacon_period; /* period of mgmt beacons, Kus */ + int beacons_received; + unsigned long beacons_last_qual; /* time we restarted counting + beacons */ +}; - struct ieee80211_hw *hw; - int mac80211_registered; - - struct key_config keys[4]; /* installed key types */ - u8 default_pairwise_key; - u8 default_group_key; +struct at76_rx_radiotap { + struct ieee80211_radiotap_header rt_hdr; + __le64 rt_tsft; + u8 rt_flags; + u8 rt_rate; + s8 rt_signal; + s8 rt_noise; }; -#define AT76_SUPPORTED_FILTERS FIF_PROMISC_IN_BSS +#define AT76_RX_RADIOTAP_PRESENT \ + ((1 << IEEE80211_RADIOTAP_TSFT) | \ + (1 << IEEE80211_RADIOTAP_FLAGS) | \ + (1 << IEEE80211_RADIOTAP_RATE) | \ + (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) | \ + (1 << IEEE80211_RADIOTAP_DB_ANTNOISE)) + +#define BEACON_MAX_DATA_LENGTH 1500 + +/* the maximum size of an AssocReq packet */ +#define ASSOCREQ_MAX_SIZE \ + (AT76_TX_HDRLEN + sizeof(struct ieee80211_assoc_request) + \ + 1 + 1 + IW_ESSID_MAX_SIZE + 1 + 1 + 4) + +/* for shared secret auth, add the challenge text size */ +#define AUTH_FRAME_SIZE (AT76_TX_HDRLEN + sizeof(struct ieee80211_auth)) + +/* Maximal number of AuthReq retries */ +#define AUTH_RETRIES 3 +/* Maximal number of AssocReq retries */ +#define ASSOC_RETRIES 3 + +/* Beacon timeout in managed mode when we are connected */ +#define BEACON_TIMEOUT (10 * HZ) + +/* Timeout for authentication response */ +#define AUTH_TIMEOUT (1 * HZ) + +/* Timeout for association response */ +#define ASSOC_TIMEOUT (1 * HZ) + +/* Polling interval when scan is running */ #define SCAN_POLL_INTERVAL (HZ / 4) +/* Command completion timeout */ #define CMD_COMPLETION_TIMEOUT (5 * HZ) #define DEF_RTS_THRESHOLD 1536 @@ -502,6 +611,8 @@ struct at76_priv { #define DEF_SCAN_MIN_TIME 10 #define DEF_SCAN_MAX_TIME 120 +#define MAX_RTS_THRESHOLD (MAX_FRAG_THRESHOLD + 1) + /* the max padding size for tx in bytes (see calc_padding) */ #define MAX_PADDING_SIZE 53 |