+++ /dev/null
-/*
- * Low-level hardware driver -- IEEE 802.11 driver (80211.o) interface
- * Copyright 2002-2005, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef D80211_H
-#define D80211_H
-
-#include <linux/kernel.h>
-#include <linux/if_ether.h>
-#include <linux/skbuff.h>
-#include <linux/wireless.h>
-#include <linux/device.h>
-#include <linux/ieee80211.h>
-
-/* Note! Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be
- * called in hardware interrupt context. The low-level driver must not call any
- * other functions in hardware interrupt context. If there is a need for such
- * call, the low-level driver should first ACK the interrupt and perform the
- * IEEE 802.11 code call after this, e.g., from a scheduled tasklet (in
- * software interrupt context).
- */
-
-/*
- * Frame format used when passing frame between low-level hardware drivers
- * and IEEE 802.11 driver the same as used in the wireless media, i.e.,
- * buffers start with IEEE 802.11 header and include the same octets that
- * are sent over air.
- *
- * If hardware uses IEEE 802.3 headers (and perform 802.3 <-> 802.11
- * conversion in firmware), upper layer 802.11 code needs to be changed to
- * support this.
- *
- * If the receive frame format is not the same as the real frame sent
- * on the wireless media (e.g., due to padding etc.), upper layer 802.11 code
- * could be updated to provide support for such format assuming this would
- * optimize the performance, e.g., by removing need to re-allocation and
- * copying of the data.
- */
-
-/* Interface version (used for compatibility verification) */
-#define IEEE80211_VERSION 2
-
-
-#define IEEE80211_CHAN_W_SCAN 0x00000001
-#define IEEE80211_CHAN_W_ACTIVE_SCAN 0x00000002
-#define IEEE80211_CHAN_W_IBSS 0x00000004
-
-/* Channel information structure. Low-level driver is expected to fill in chan,
- * freq, and val fields. Other fields will be filled in by 80211.o based on
- * hostapd information and low-level driver does not need to use them. The
- * limits for each channel will be provided in 'struct ieee80211_conf' when
- * configuring the low-level driver with hw->config callback. */
-struct ieee80211_channel {
- short chan; /* channel number (IEEE 802.11) */
- short freq; /* frequency in MHz */
- int val; /* hw specific value for the channel */
- int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
- unsigned char power_level;
- unsigned char antenna_max;
-};
-
-#define IEEE80211_RATE_ERP 0x00000001
-#define IEEE80211_RATE_BASIC 0x00000002
-#define IEEE80211_RATE_PREAMBLE2 0x00000004
-#define IEEE80211_RATE_SUPPORTED 0x00000010
-#define IEEE80211_RATE_OFDM 0x00000020
-#define IEEE80211_RATE_CCK 0x00000040
-#define IEEE80211_RATE_TURBO 0x00000080
-#define IEEE80211_RATE_MANDATORY 0x00000100
-
-#define IEEE80211_RATE_CCK_2 (IEEE80211_RATE_CCK | IEEE80211_RATE_PREAMBLE2)
-#define IEEE80211_RATE_MODULATION(f) \
-(f & (IEEE80211_RATE_CCK | IEEE80211_RATE_OFDM))
-
-/* Low-level driver should set PREAMBLE2, OFDM, CCK, and TURBO flags.
- * BASIC, SUPPORTED, ERP, and MANDATORY flags are set in 80211.o based on the
- * configuration. */
-struct ieee80211_rate {
- int rate; /* rate in 100 kbps */
- int val; /* hw specific value for the rate */
- int flags; /* IEEE80211_RATE_ flags */
- int val2; /* hw specific value for the rate when using short preamble
- * (only when IEEE80211_RATE_PREAMBLE2 flag is set, i.e., for
- * 2, 5.5, and 11 Mbps) */
- signed char min_rssi_ack;
- unsigned char min_rssi_ack_delta;
-
- /* following fields are set by 80211.o and need not be filled by the
- * low-level driver */
- int rate_inv; /* inverse of the rate (LCM(all rates) / rate) for
- * optimizing channel utilization estimates */
-};
-
-/* 802.11g is backwards-compatible with 802.11b, so a wlan card can
- * actually be both in 11b and 11g modes at the same time. */
-enum {
- MODE_IEEE80211A = 0 /* IEEE 802.11a */,
- MODE_IEEE80211B = 1 /* IEEE 802.11b only */,
- MODE_ATHEROS_TURBO = 2 /* Atheros Turbo mode (2x.11a at 5 GHz) */,
- MODE_IEEE80211G = 3 /* IEEE 802.11g (and 802.11b compatibility) */,
- MODE_ATHEROS_TURBOG = 4 /* Atheros Turbo mode (2x.11g at 2.4 GHz) */,
- NUM_IEEE80211_MODES = 5
-};
-
-struct ieee80211_hw_mode {
- int mode; /* MODE_IEEE80211... */
- int num_channels; /* Number of channels (below) */
- struct ieee80211_channel *channels; /* Array of supported channels */
- int num_rates; /* Number of rates (below) */
- struct ieee80211_rate *rates; /* Array of supported rates */
-
- struct list_head list; /* Internal, don't touch */
-};
-
-struct ieee80211_tx_queue_params {
- int aifs; /* 0 .. 255; -1 = use default */
- int cw_min; /* 2^n-1: 1, 3, 7, .. , 1023; 0 = use default */
- int cw_max; /* 2^n-1: 1, 3, 7, .. , 1023; 0 = use default */
- int burst_time; /* maximum burst time in 0.1 ms (i.e., 10 = 1 ms);
- * 0 = disabled */
-};
-
-#define NUM_TX_DATA_QUEUES 6
-
-struct ieee80211_tx_queue_stats_data {
- unsigned int len; /* num packets in queue */
- unsigned int limit; /* queue len (soft) limit */
- unsigned int count; /* total num frames sent */
-};
-
-struct ieee80211_tx_queue_stats {
- struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES];
-};
-
-#ifndef IEEE80211_TX_QUEUE_NUMS
-#define IEEE80211_TX_QUEUE_NUMS
-/* TODO: these need to be synchronized with hostapd_ioctl.h; make a shared
- * header file that can be included into low-level drivers, 80211.o, and
- * hostapd */
-enum {
- IEEE80211_TX_QUEUE_DATA0 = 0,
- IEEE80211_TX_QUEUE_DATA1 = 1,
- IEEE80211_TX_QUEUE_DATA2 = 2,
- IEEE80211_TX_QUEUE_DATA3 = 3,
- IEEE80211_TX_QUEUE_DATA4 = 4,
- IEEE80211_TX_QUEUE_SVP = 5,
- IEEE80211_TX_QUEUE_AFTER_BEACON = 6,
- IEEE80211_TX_QUEUE_BEACON = 7
-};
-#endif /* IEEE80211_TX_QUEUE_NUMS */
-
-
-struct ieee80211_low_level_stats {
- unsigned int dot11ACKFailureCount;
- unsigned int dot11RTSFailureCount;
- unsigned int dot11FCSErrorCount;
- unsigned int dot11RTSSuccessCount;
-};
-
-/* Transmit control fields. This data structure is passed to low-level driver
- * with each TX frame. The low-level driver is responsible for configuring
- * the hardware to use given values (depending on what is supported). */
-#define HW_KEY_IDX_INVALID -1
-
-struct ieee80211_tx_control {
- int tx_rate; /* Transmit rate, given as the hw specific value for the
- * rate (from struct ieee80211_rate) */
- int rts_cts_rate; /* Transmit rate for RTS/CTS frame, given as the hw
- * specific value for the rate (from
- * struct ieee80211_rate) */
-
-#define IEEE80211_TXCTL_REQ_TX_STATUS (1<<0)/* request TX status callback for
- * this frame */
-#define IEEE80211_TXCTL_DO_NOT_ENCRYPT (1<<1) /* send this frame without
- * encryption; e.g., for EAPOL
- * frames */
-#define IEEE80211_TXCTL_USE_RTS_CTS (1<<2) /* use RTS-CTS before sending
- * frame */
-#define IEEE80211_TXCTL_USE_CTS_PROTECT (1<<3) /* use CTS protection for the
- * frame (e.g., for combined
- * 802.11g / 802.11b networks) */
-#define IEEE80211_TXCTL_NO_ACK (1<<4) /* tell the low level not to
- * wait for an ack */
-#define IEEE80211_TXCTL_RATE_CTRL_PROBE (1<<5)
-#define IEEE80211_TXCTL_CLEAR_DST_MASK (1<<6)
-#define IEEE80211_TXCTL_REQUEUE (1<<7)
-#define IEEE80211_TXCTL_FIRST_FRAGMENT (1<<8) /* this is a first fragment of
- * the frame */
-#define IEEE80211_TXCTL_TKIP_NEW_PHASE1_KEY (1<<9)
- u32 flags; /* tx control flags defined
- * above */
- u16 rts_cts_duration; /* duration field for RTS/CTS frame */
- u8 retry_limit; /* 1 = only first attempt, 2 = one retry, .. */
- u8 power_level; /* per-packet transmit power level, in dBm */
- u8 antenna_sel; /* 0 = default/diversity, 1 = Ant0, 2 = Ant1 */
- s8 key_idx; /* -1 = do not encrypt, >= 0 keyidx from
- * hw->set_key() */
- u8 icv_len; /* length of the ICV/MIC field in octets */
- u8 iv_len; /* length of the IV field in octets */
- u8 tkip_key[16]; /* generated phase2/phase1 key for hw TKIP */
- u8 queue; /* hardware queue to use for this frame;
- * 0 = highest, hw->queues-1 = lowest */
- u8 sw_retry_attempt; /* number of times hw has tried to
- * transmit frame (not incl. hw retries) */
-
- int rateidx; /* internal 80211.o rateidx */
- int alt_retry_rate; /* retry rate for the last retries, given as the
- * hw specific value for the rate (from
- * struct ieee80211_rate). To be used to limit
- * packet dropping when probing higher rates, if hw
- * supports multiple retry rates. -1 = not used */
- int type; /* internal */
- int ifindex; /* internal */
-};
-
-#define RX_FLAG_MMIC_ERROR 0x1
-#define RX_FLAG_DECRYPTED 0x2
-
-/* Receive status. The low-level driver should provide this information
- * (the subset supported by hardware) to the 802.11 code with each received
- * frame. */
-struct ieee80211_rx_status {
- u64 hosttime;
- u64 mactime;
- int freq; /* receive frequency in Mhz */
- int channel;
- int phymode;
- int ssi;
- int signal;
- int noise;
- int antenna;
- int rate;
- int flag;
-};
-
-/* Transmit status. The low-level driver should provide this information
- * (the subset supported by hardware) to the 802.11 code for each transmit
- * frame. */
-struct ieee80211_tx_status {
- /* copied ieee80211_tx_control structure */
- struct ieee80211_tx_control control;
-
-#define IEEE80211_TX_STATUS_TX_FILTERED (1<<0)
-#define IEEE80211_TX_STATUS_ACK (1<<1) /* whether the TX frame was ACKed */
- u32 flags; /* tx staus flags defined above */
-
- int ack_signal; /* measured signal strength of the ACK frame */
- int excessive_retries;
- int retry_count;
-
- int queue_length; /* information about TX queue */
- int queue_number;
-};
-
-
-/**
- * struct ieee80211_conf - configuration of the device
- *
- * This struct indicates how the driver shall configure the hardware.
- *
- * @radio_enabled: when zero, driver is required to switch off the radio.
- */
-struct ieee80211_conf {
- int channel; /* IEEE 802.11 channel number */
- int freq; /* MHz */
- int channel_val; /* hw specific value for the channel */
-
- int phymode; /* MODE_IEEE80211A, .. */
- unsigned int regulatory_domain;
- int radio_enabled;
-
- int beacon_int;
-
-#define IEEE80211_CONF_SHORT_SLOT_TIME (1<<0) /* use IEEE 802.11g Short Slot
- * Time */
-#define IEEE80211_CONF_SSID_HIDDEN (1<<1) /* do not broadcast the ssid */
- u32 flags; /* configuration flags defined above */
-
- u8 power_level; /* transmit power limit for current
- * regulatory domain; in dBm */
- u8 antenna_max; /* maximum antenna gain */
- short tx_power_reduction; /* in 0.1 dBm */
-
- int antenna_sel; /* default antenna conf:
- * 0 = default/diversity,
- * 1 = Ant0,
- * 2 = Ant1 */
-
- int antenna_def;
- int antenna_mode;
-
- /* Following five fields are used for IEEE 802.11H */
- unsigned int radar_detect;
- unsigned int spect_mgmt;
- unsigned int quiet_duration; /* duration of quiet period */
- unsigned int quiet_offset; /* how far into the beacon is the quiet
- * period */
- unsigned int quiet_period;
- u8 radar_firpwr_threshold;
- u8 radar_rssi_threshold;
- u8 pulse_height_threshold;
- u8 pulse_rssi_threshold;
- u8 pulse_inband_threshold;
-};
-
-/**
- * enum ieee80211_if_types - types of 802.11 network interfaces
- *
- * @IEEE80211_IF_TYPE_AP: interface in AP mode.
- * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap
- * daemon. Drivers should never see this type.
- * @IEEE80211_IF_TYPE_STA: interface in STA (client) mode.
- * @IEEE80211_IF_TYPE_IBSS: interface in IBSS (ad-hoc) mode.
- * @IEEE80211_IF_TYPE_MNTR: interface in monitor (rfmon) mode.
- * @IEEE80211_IF_TYPE_WDS: interface in WDS mode.
- * @IEEE80211_IF_TYPE_VLAN: not used.
- */
-enum ieee80211_if_types {
- IEEE80211_IF_TYPE_AP = 0x00000000,
- IEEE80211_IF_TYPE_MGMT = 0x00000001,
- IEEE80211_IF_TYPE_STA = 0x00000002,
- IEEE80211_IF_TYPE_IBSS = 0x00000003,
- IEEE80211_IF_TYPE_MNTR = 0x00000004,
- IEEE80211_IF_TYPE_WDS = 0x5A580211,
- IEEE80211_IF_TYPE_VLAN = 0x00080211,
-};
-
-/**
- * struct ieee80211_if_init_conf - initial configuration of an interface
- *
- * @if_id: internal interface ID. This number has no particular meaning to
- * drivers and the only allowed usage is to pass it to
- * ieee80211_beacon_get() and ieee80211_get_buffered_bc() functions.
- * This field is not valid for monitor interfaces
- * (interfaces of %IEEE80211_IF_TYPE_MNTR type).
- * @type: one of &enum ieee80211_if_types constants. Determines the type of
- * added/removed interface.
- * @mac_addr: pointer to MAC address of the interface. This pointer is valid
- * until the interface is removed (i.e. it cannot be used after
- * remove_interface() callback was called for this interface).
- *
- * This structure is used in add_interface() and remove_interface()
- * callbacks of &struct ieee80211_hw.
- */
-struct ieee80211_if_init_conf {
- int if_id;
- int type;
- void *mac_addr;
-};
-
-/**
- * struct ieee80211_if_conf - configuration of an interface
- *
- * @type: type of the interface. This is always the same as was specified in
- * &struct ieee80211_if_init_conf. The type of an interface never changes
- * during the life of the interface; this field is present only for
- * convenience.
- * @bssid: BSSID of the network we are associated to/creating.
- * @ssid: used (together with @ssid_len) by drivers for hardware that
- * generate beacons independently. The pointer is valid only during the
- * config_interface() call, so copy the value somewhere if you need
- * it.
- * @ssid_len: length of the @ssid field.
- * @generic_elem: used (together with @generic_elem_len) by drivers for
- * hardware that generate beacons independently. The pointer is valid
- * only during the config_interface() call, so copy the value somewhere
- * if you need it.
- * @generic_elem_len: length of the generic element.
- * @beacon: beacon template. Valid only if @host_gen_beacon_template in
- * &struct ieee80211_hw is set. The driver is responsible of freeing
- * the sk_buff.
- *
- * This structure is passed to the config_interface() callback of
- * &struct ieee80211_hw.
- */
-struct ieee80211_if_conf {
- int type;
- u8 *bssid;
- u8 *ssid;
- size_t ssid_len;
- u8 *generic_elem;
- size_t generic_elem_len;
- struct sk_buff *beacon;
-};
-
-typedef enum { ALG_NONE, ALG_WEP, ALG_TKIP, ALG_CCMP, ALG_NULL }
-ieee80211_key_alg;
-
-
-struct ieee80211_key_conf {
-
- int hw_key_idx; /* filled + used by low-level driver */
- ieee80211_key_alg alg;
- int keylen;
-
-#define IEEE80211_KEY_FORCE_SW_ENCRYPT (1<<0) /* to be cleared by low-level
- driver */
-#define IEEE80211_KEY_DEFAULT_TX_KEY (1<<1) /* This key is the new default TX
- key (used only for broadcast
- keys). */
-#define IEEE80211_KEY_DEFAULT_WEP_ONLY (1<<2) /* static WEP is the only
- configured security policy;
- this allows some low-level
- drivers to determine when
- hwaccel can be used */
- u32 flags; /* key configuration flags defined above */
-
- s8 keyidx; /* WEP key index */
- u8 key[0];
-};
-
-#define IEEE80211_SCAN_START 1
-#define IEEE80211_SCAN_END 2
-
-struct ieee80211_scan_conf {
- int scan_channel; /* IEEE 802.11 channel number to do passive scan
- * on */
- int scan_freq; /* new freq in MHz to switch to for passive scan
- */
- int scan_channel_val; /* hw specific value for the channel */
- int scan_phymode; /* MODE_IEEE80211A, .. */
- unsigned char scan_power_level;
- unsigned char scan_antenna_max;
-
-
- int running_channel; /* IEEE 802.11 channel number we operate on
- * normally */
- int running_freq; /* freq in MHz we're operating on normally */
- int running_channel_val; /* hw specific value for the channel */
- int running_phymode;
- unsigned char running_power_level;
- unsigned char running_antenna_max;
-
- int scan_time; /* time a scan will take in us */
- int tries;
-
- struct sk_buff *skb; /* skb to transmit before changing channels, maybe
- * NULL for none */
- struct ieee80211_tx_control *tx_control;
-
-};
-
-#define IEEE80211_SEQ_COUNTER_RX 0
-#define IEEE80211_SEQ_COUNTER_TX 1
-
-typedef enum {
- SET_KEY, DISABLE_KEY, REMOVE_ALL_KEYS,
-} set_key_cmd;
-
-/* This is driver-visible part of the per-hw state the stack keeps. */
-struct ieee80211_hw {
- /* these are assigned by d80211, don't write */
- int index;
- struct ieee80211_conf conf;
-
- /* Pointer to the private area that was
- * allocated with this struct for you. */
- void *priv;
-
- /* The rest is information about your hardware */
-
- struct device *dev;
-
- /* permanent mac address */
- u8 perm_addr[ETH_ALEN];
-
- /* TODO: frame_type 802.11/802.3, sw_encryption requirements */
-
- /* Some wireless LAN chipsets generate beacons in the hardware/firmware
- * and others rely on host generated beacons. This option is used to
- * configure the upper layer IEEE 802.11 module to generate beacons.
- * The low-level driver can use ieee80211_beacon_get() to fetch the
- * next beacon frame. */
-#define IEEE80211_HW_HOST_GEN_BEACON (1<<0)
-
- /* The device needs to be supplied with a beacon template only. */
-#define IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE (1<<1)
-
- /* Some devices handle decryption internally and do not
- * indicate whether the frame was encrypted (unencrypted frames
- * will be dropped by the hardware, unless specifically allowed
- * through) */
-#define IEEE80211_HW_DEVICE_HIDES_WEP (1<<2)
-
- /* Whether RX frames passed to ieee80211_rx() include FCS in the end */
-#define IEEE80211_HW_RX_INCLUDES_FCS (1<<3)
-
- /* Some wireless LAN chipsets buffer broadcast/multicast frames for
- * power saving stations in the hardware/firmware and others rely on
- * the host system for such buffering. This option is used to
- * configure the IEEE 802.11 upper layer to buffer broadcast/multicast
- * frames when there are power saving stations so that low-level driver
- * can fetch them with ieee80211_get_buffered_bc(). */
-#define IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING (1<<4)
-
-#define IEEE80211_HW_WEP_INCLUDE_IV (1<<5)
-
- /* will data nullfunc frames get proper TX status callback */
-#define IEEE80211_HW_DATA_NULLFUNC_ACK (1<<6)
-
- /* Force software encryption for TKIP packets if WMM is enabled. */
-#define IEEE80211_HW_NO_TKIP_WMM_HWACCEL (1<<7)
-
- /* Some devices handle Michael MIC internally and do not include MIC in
- * the received packets passed up. device_strips_mic must be set
- * for such devices. The 'encryption' frame control bit is expected to
- * be still set in the IEEE 802.11 header with this option unlike with
- * the device_hides_wep configuration option.
- */
-#define IEEE80211_HW_DEVICE_STRIPS_MIC (1<<8)
-
- /* Device is capable of performing full monitor mode even during
- * normal operation. */
-#define IEEE80211_HW_MONITOR_DURING_OPER (1<<9)
-
- /* Set if the low-level driver supports skb fraglist (NETIF_F_FRAGLIST),
- * i.e. more than one skb per frame */
-#define IEEE80211_HW_FRAGLIST (1<<10)
-
- /* calculate Michael MIC for an MSDU when doing hwcrypto */
-#define IEEE80211_HW_TKIP_INCLUDE_MMIC (1<<12)
- /* Do TKIP phase1 key mixing in stack to support cards only do
- * phase2 key mixing when doing hwcrypto */
-#define IEEE80211_HW_TKIP_REQ_PHASE1_KEY (1<<13)
- /* Do TKIP phase1 and phase2 key mixing in stack and send the generated
- * per-packet RC4 key with each TX frame when doing hwcrypto */
-#define IEEE80211_HW_TKIP_REQ_PHASE2_KEY (1<<14)
-
- u32 flags; /* hardware flags defined above */
-
- /* Set to the size of a needed device specific skb headroom for TX skbs. */
- unsigned int extra_tx_headroom;
-
- /* This is the time in us to change channels
- */
- int channel_change_time;
- /* This is maximum value for rssi reported by this device */
- int maxssi;
-
- /* Number of available hardware TX queues for data packets.
- * WMM requires at least four queues. */
- int queues;
-};
-
-/* Configuration block used by the low-level driver to tell the 802.11 code
- * about supported hardware features and to pass function pointers to callback
- * functions. */
-struct ieee80211_ops {
- /* Handler that 802.11 module calls for each transmitted frame.
- * skb contains the buffer starting from the IEEE 802.11 header.
- * The low-level driver should send the frame out based on
- * configuration in the TX control data. */
- int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_control *control);
-
- /* Handler for performing hardware reset. */
- int (*reset)(struct ieee80211_hw *hw);
-
- /* Handler that is called when any netdevice attached to the hardware
- * device is set UP for the first time. This can be used, e.g., to
- * enable interrupts and beacon sending. */
- int (*open)(struct ieee80211_hw *hw);
-
- /* Handler that is called when the last netdevice attached to the
- * hardware device is set DOWN. This can be used, e.g., to disable
- * interrupts and beacon sending. */
- int (*stop)(struct ieee80211_hw *hw);
-
- /* Handler for asking a driver if a new interface can be added (or,
- * more exactly, set UP). If the handler returns zero, the interface
- * is added. Driver should perform any initialization it needs prior
- * to returning zero. By returning non-zero addition of the interface
- * is inhibited. Unless monitor_during_oper is set, it is guaranteed
- * that monitor interfaces and normal interfaces are mutually
- * exclusive. The open() handler is called after add_interface()
- * if this is the first device added. At least one of the open()
- * open() and add_interface() callbacks has to be assigned. If
- * add_interface() is NULL, one STA interface is permitted only. */
- int (*add_interface)(struct ieee80211_hw *hw,
- struct ieee80211_if_init_conf *conf);
-
- /* Notify a driver that an interface is going down. The stop() handler
- * is called prior to this if this is a last interface. */
- void (*remove_interface)(struct ieee80211_hw *hw,
- struct ieee80211_if_init_conf *conf);
-
- /* Handler for configuration requests. IEEE 802.11 code calls this
- * function to change hardware configuration, e.g., channel. */
- int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
-
- /* Handler for configuration requests related to interfaces (e.g.
- * BSSID). */
- int (*config_interface)(struct ieee80211_hw *hw,
- int if_id, struct ieee80211_if_conf *conf);
-
- /* ieee80211 drivers do not have access to the &struct net_device
- * that is (are) connected with their device. Hence (and because
- * we need to combine the multicast lists and flags for multiple
- * virtual interfaces), they cannot assign set_multicast_list.
- * The parameters here replace dev->flags and dev->mc_count,
- * dev->mc_list is replaced by calling ieee80211_get_mc_list_item. */
- void (*set_multicast_list)(struct ieee80211_hw *hw,
- unsigned short flags, int mc_count);
-
- /* Set TIM bit handler. If the hardware/firmware takes care of beacon
- * generation, IEEE 802.11 code uses this function to tell the
- * low-level to set (or clear if set==0) TIM bit for the given aid. If
- * host system is used to generate beacons, this handler is not used
- * and low-level driver should set it to NULL. */
- int (*set_tim)(struct ieee80211_hw *hw, int aid, int set);
-
- /* Set encryption key. IEEE 802.11 module calls this function to set
- * encryption keys. addr is ff:ff:ff:ff:ff:ff for default keys and
- * station hwaddr for individual keys. aid of the station is given
- * to help low-level driver in selecting which key->hw_key_idx to use
- * for this key. TX control data will use the hw_key_idx selected by
- * the low-level driver. */
- int (*set_key)(struct ieee80211_hw *hw, set_key_cmd cmd,
- u8 *addr, struct ieee80211_key_conf *key, int aid);
-
- /* Set TX key index for default/broadcast keys. This is needed in cases
- * where wlan card is doing full WEP/TKIP encapsulation (wep_include_iv
- * is not set), in other cases, this function pointer can be set to
- * NULL since the IEEE 802. 11 module takes care of selecting the key
- * index for each TX frame. */
- int (*set_key_idx)(struct ieee80211_hw *hw, int idx);
-
- /* Enable/disable IEEE 802.1X. This item requests wlan card to pass
- * unencrypted EAPOL-Key frames even when encryption is configured.
- * If the wlan card does not require such a configuration, this
- * function pointer can be set to NULL. */
- int (*set_ieee8021x)(struct ieee80211_hw *hw, int use_ieee8021x);
-
- /* Set port authorization state (IEEE 802.1X PAE) to be authorized
- * (authorized=1) or unauthorized (authorized=0). This function can be
- * used if the wlan hardware or low-level driver implements PAE.
- * 80211.o module will anyway filter frames based on authorization
- * state, so this function pointer can be NULL if low-level driver does
- * not require event notification about port state changes. */
- int (*set_port_auth)(struct ieee80211_hw *hw, u8 *addr,
- int authorized);
-
- /* Ask the hardware to do a passive scan on a new channel. The hardware
- * will do what ever is required to nicely leave the current channel
- * including transmit any CTS packets, etc. */
- int (*passive_scan)(struct ieee80211_hw *hw, int state,
- struct ieee80211_scan_conf *conf);
-
- /* Ask the hardware to service the scan request, no need to start
- * the scan state machine in stack. */
- int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
-
- /* return low-level statistics */
- int (*get_stats)(struct ieee80211_hw *hw,
- struct ieee80211_low_level_stats *stats);
-
- /* Enable/disable test modes; mode = IEEE80211_TEST_* */
- int (*test_mode)(struct ieee80211_hw *hw, int mode);
-
- /* Configuration of test parameters */
- int (*test_param)(struct ieee80211_hw *hw, int param, int value);
-
- /* For devices that generate their own beacons and probe response
- * or association responses this updates the state of privacy_invoked
- * returns 0 for success or an error number */
- int (*set_privacy_invoked)(struct ieee80211_hw *hw,
- int privacy_invoked);
-
- /* For devices that have internal sequence counters, allow 802.11
- * code to access the current value of a counter */
- int (*get_sequence_counter)(struct ieee80211_hw *hw,
- u8* addr, u8 keyidx, u8 txrx,
- u32* iv32, u16* iv16);
-
- /* Configuration of RTS threshold (if device needs it) */
- int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
-
- /* Configuration of fragmentation threshold.
- * Assign this if the device does fragmentation by itself,
- * if this method is assigned then the stack will not do
- * fragmentation. */
- int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
-
- /* Configuration of retry limits (if device needs it) */
- int (*set_retry_limit)(struct ieee80211_hw *hw,
- u32 short_retry, u32 long_retr);
-
- /* Number of STAs in STA table notification (NULL = disabled) */
- void (*sta_table_notification)(struct ieee80211_hw *hw,
- int num_sta);
-
- /* Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
- * bursting) for a hardware TX queue.
- * queue = IEEE80211_TX_QUEUE_*. */
- int (*conf_tx)(struct ieee80211_hw *hw, int queue,
- const struct ieee80211_tx_queue_params *params);
-
- /* Get statistics of the current TX queue status. This is used to get
- * number of currently queued packets (queue length), maximum queue
- * size (limit), and total number of packets sent using each TX queue
- * (count). This information is used for WMM to find out which TX
- * queues have room for more packets and by hostapd to provide
- * statistics about the current queueing state to external programs. */
- int (*get_tx_stats)(struct ieee80211_hw *hw,
- struct ieee80211_tx_queue_stats *stats);
-
- /* Get the current TSF timer value from firmware/hardware. Currently,
- * this is only used for IBSS mode debugging and, as such, is not a
- * required function. */
- u64 (*get_tsf)(struct ieee80211_hw *hw);
-
- /* Reset the TSF timer and allow firmware/hardware to synchronize with
- * other STAs in the IBSS. This is only used in IBSS mode. This
- * function is optional if the firmware/hardware takes full care of
- * TSF synchronization. */
- void (*reset_tsf)(struct ieee80211_hw *hw);
-
- /* Setup beacon data for IBSS beacons. Unlike access point (Master),
- * IBSS uses a fixed beacon frame which is configured using this
- * function. This handler is required only for IBSS mode. */
- int (*beacon_update)(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct ieee80211_tx_control *control);
-
- /* Determine whether the last IBSS beacon was sent by us. This is
- * needed only for IBSS mode and the result of this function is used to
- * determine whether to reply to Probe Requests. */
- int (*tx_last_beacon)(struct ieee80211_hw *hw);
-};
-
-/* Allocate a new hardware device. This must be called once for each
- * hardware device. The returned pointer must be used to refer to this
- * device when calling other functions. 802.11 code allocates a private data
- * area for the low-level driver. The size of this area is given as
- * priv_data_len.
- */
-struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
- const struct ieee80211_ops *ops);
-
-/* Register hardware device to the IEEE 802.11 code and kernel. Low-level
- * drivers must call this function before using any other IEEE 802.11
- * function except ieee80211_register_hwmode. */
-int ieee80211_register_hw(struct ieee80211_hw *hw);
-
-/* driver can use this and ieee80211_get_rx_led_name to get the
- * name of the registered LEDs after ieee80211_register_hw
- * was called.
- * This is useful to set the default trigger on the LED class
- * device that your driver should export for each LED the device
- * has, that way the default behaviour will be as expected but
- * the user can still change it/turn off the LED etc.
- */
-#ifdef CONFIG_D80211_LEDS
-extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw);
-extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw);
-#endif
-static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
-{
-#ifdef CONFIG_D80211_LEDS
- return __ieee80211_get_tx_led_name(hw);
-#else
- return NULL;
-#endif
-}
-
-static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
-{
-#ifdef CONFIG_D80211_LEDS
- return __ieee80211_get_rx_led_name(hw);
-#else
- return NULL;
-#endif
-}
-
-/* Register a new hardware PHYMODE capability to the stack. */
-int ieee80211_register_hwmode(struct ieee80211_hw *hw,
- struct ieee80211_hw_mode *mode);
-
-/* Unregister a hardware device. This function instructs 802.11 code to free
- * allocated resources and unregister netdevices from the kernel. */
-void ieee80211_unregister_hw(struct ieee80211_hw *hw);
-
-/* Free everything that was allocated including private data of a driver. */
-void ieee80211_free_hw(struct ieee80211_hw *hw);
-
-/* Receive frame callback function. The low-level driver uses this function to
- * send received frames to the IEEE 802.11 code. Receive buffer (skb) must
- * start with IEEE 802.11 header. */
-void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_rx_status *status);
-void ieee80211_rx_irqsafe(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct ieee80211_rx_status *status);
-
-/* Transmit status callback function. The low-level driver must call this
- * function to report transmit status for all the TX frames that had
- * req_tx_status set in the transmit control fields. In addition, this should
- * be called at least for all unicast frames to provide information for TX rate
- * control algorithm. In order to maintain all statistics, this function is
- * recommended to be called after each frame, including multicast/broadcast, is
- * sent. */
-void ieee80211_tx_status(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status);
-void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct ieee80211_tx_status *status);
-
-/**
- * ieee80211_beacon_get - beacon generation function
- * @hw: pointer obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
- * @control: will be filled with information needed to send this beacon.
- *
- * If the beacon frames are generated by the host system (i.e., not in
- * hardware/firmware), the low-level driver uses this function to receive
- * the next beacon frame from the 802.11 code. The low-level is responsible
- * for calling this function before beacon data is needed (e.g., based on
- * hardware interrupt). Returned skb is used only once and low-level driver
- * is responsible of freeing it.
- */
-struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
- int if_id,
- struct ieee80211_tx_control *control);
-
-/**
- * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames
- * @hw: pointer as obtained from ieee80211_alloc_hw().
- * @if_id: interface ID from &struct ieee80211_if_init_conf.
- * @control: will be filled with information needed to send returned frame.
- *
- * Function for accessing buffered broadcast and multicast frames. If
- * hardware/firmware does not implement buffering of broadcast/multicast
- * frames when power saving is used, 802.11 code buffers them in the host
- * memory. The low-level driver uses this function to fetch next buffered
- * frame. In most cases, this is used when generating beacon frame. This
- * function returns a pointer to the next buffered skb or NULL if no more
- * buffered frames are available.
- *
- * Note: buffered frames are returned only after DTIM beacon frame was
- * generated with ieee80211_beacon_get() and the low-level driver must thus
- * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns
- * NULL if the previous generated beacon was not DTIM, so the low-level driver
- * does not need to check for DTIM beacons separately and should be able to
- * use common code for all beacons.
- */
-struct sk_buff *
-ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
- struct ieee80211_tx_control *control);
-
-/* Low level drivers that have their own MLME and MAC indicate
- * the aid for an associating station with this call */
-int ieee80211_set_aid_for_sta(struct ieee80211_hw *hw,
- u8 *peer_address, u16 aid);
-
-
-/* Given an sk_buff with a raw 802.11 header at the data pointer this function
- * returns the 802.11 header length in bytes (not including encryption
- * headers). If the data in the sk_buff is too short to contain a valid 802.11
- * header the function returns 0.
- */
-int ieee80211_get_hdrlen_from_skb(struct sk_buff *skb);
-
-/* Like ieee80211_get_hdrlen_from_skb() but takes a FC in CPU order. */
-int ieee80211_get_hdrlen(u16 fc);
-
-/* Function for net interface operation. IEEE 802.11 may use multiple kernel
- * netdevices for each hardware device. The low-level driver does not "see"
- * these interfaces, so it should use this function to perform netif
- * operations on all interface. */
-/* This function is deprecated. */
-typedef enum {
- NETIF_ATTACH, NETIF_DETACH, NETIF_START, NETIF_STOP, NETIF_WAKE,
- NETIF_IS_STOPPED, NETIF_UPDATE_TX_START
-} Netif_Oper;
-int ieee80211_netif_oper(struct ieee80211_hw *hw, Netif_Oper op);
-
-/**
- * ieee80211_wake_queue - wake specific queue
- * @hw: pointer as obtained from ieee80211_alloc_hw().
- * @queue: queue number (counted from zero).
- *
- * Drivers should use this function instead of netif_wake_queue.
- */
-void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue);
-
-/**
- * ieee80211_stop_queue - stop specific queue
- * @hw: pointer as obtained from ieee80211_alloc_hw().
- * @queue: queue number (counted from zero).
- *
- * Drivers should use this function instead of netif_stop_queue.
- */
-void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue);
-
-/**
- * ieee80211_start_queues - start all queues
- * @hw: pointer to as obtained from ieee80211_alloc_hw().
- *
- * Drivers should use this function instead of netif_start_queue.
- */
-void ieee80211_start_queues(struct ieee80211_hw *hw);
-
-/**
- * ieee80211_stop_queues - stop all queues
- * @hw: pointer as obtained from ieee80211_alloc_hw().
- *
- * Drivers should use this function instead of netif_stop_queue.
- */
-void ieee80211_stop_queues(struct ieee80211_hw *hw);
-
-/**
- * ieee80211_get_mc_list_item - iteration over items in multicast list
- * @hw: pointer as obtained from ieee80211_alloc_hw().
- * @prev: value returned by previous call to ieee80211_get_mc_list_item() or
- * NULL to start a new iteration.
- * @ptr: pointer to buffer of void * type for internal usage of
- * ieee80211_get_mc_list_item().
- *
- * Iterates over items in multicast list of given device. To get the first
- * item, pass NULL in @prev and in *@ptr. In subsequent calls, pass the
- * value returned by previous call in @prev. Don't alter *@ptr during
- * iteration. When there are no more items, NULL is returned.
- */
-struct dev_mc_list *
-ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
- struct dev_mc_list *prev,
- void **ptr);
-
-/* called by driver to notify scan status completed */
-void ieee80211_scan_completed(struct ieee80211_hw *hw);
-
-/* Function to indicate Radar Detection. The low level driver must call this
- * function to indicate the presence of radar in the current channel.
- * Additionally the radar type also could be sent */
-int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
- int radar, int radar_type);
-
-/* Test modes */
-enum {
- IEEE80211_TEST_DISABLE = 0 /* terminate testing */,
- IEEE80211_TEST_UNMASK_CHANNELS = 1 /* allow all channels to be used */,
- IEEE80211_TEST_CONTINUOUS_TX = 2,
-};
-
-/* Test parameters */
-enum {
- /* TX power in hardware specific raw value */
- IEEE80211_TEST_PARAM_TX_POWER_RAW = 0,
- /* TX rate in hardware specific raw value */
- IEEE80211_TEST_PARAM_TX_RATE_RAW = 1,
- /* Continuous TX pattern (32-bit) */
- IEEE80211_TEST_PARAM_TX_PATTERN = 2,
- /* TX power in 0.1 dBm, 100 = 10 dBm */
- IEEE80211_TEST_PARAM_TX_POWER = 3,
- /* TX rate in 100 kbps, 540 = 54 Mbps */
- IEEE80211_TEST_PARAM_TX_RATE = 4,
- IEEE80211_TEST_PARAM_TX_ANT_SEL_RAW = 5,
-};
-
-/* return a pointer to the source address (SA) */
-static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
-{
- u8 *raw = (u8 *) hdr;
- u8 tofrom = (*(raw+1)) & 3; /* get the TODS and FROMDS bits */
-
- switch (tofrom) {
- case 2:
- return hdr->addr3;
- case 3:
- return hdr->addr4;
- }
- return hdr->addr2;
-}
-
-/* return a pointer to the destination address (DA) */
-static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
-{
- u8 *raw = (u8 *) hdr;
- u8 to_ds = (*(raw+1)) & 1; /* get the TODS bit */
-
- if (to_ds)
- return hdr->addr3;
- return hdr->addr1;
-}
-
-static inline int ieee80211_get_morefrag(struct ieee80211_hdr *hdr)
-{
- return (le16_to_cpu(hdr->frame_control) &
- IEEE80211_FCTL_MOREFRAGS) != 0;
-}
-
-#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
-#define MAC_ARG(x) ((u8*)(x))[0], ((u8*)(x))[1], ((u8*)(x))[2], \
- ((u8*)(x))[3], ((u8*)(x))[4], ((u8*)(x))[5]
-
-#endif /* D80211_H */
projects / openwrt / openwrt.git / blobdiff