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Diffstat (limited to 'package/mac80211/src/include/net/mac80211.h')
| -rw-r--r-- | package/mac80211/src/include/net/mac80211.h | 1537 |
1 files changed, 0 insertions, 1537 deletions
diff --git a/package/mac80211/src/include/net/mac80211.h b/package/mac80211/src/include/net/mac80211.h deleted file mode 100644 index 460da54a00..0000000000 --- a/package/mac80211/src/include/net/mac80211.h +++ /dev/null @@ -1,1537 +0,0 @@ -/* - * mac80211 <-> driver interface - * - * Copyright 2002-2005, Devicescape Software, Inc. - * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> - * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> - * - * 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 MAC80211_H -#define MAC80211_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> -#include <net/wireless.h> -#include <net/cfg80211.h> - -/** - * DOC: Introduction - * - * mac80211 is the Linux stack for 802.11 hardware that implements - * only partial functionality in hard- or firmware. This document - * defines the interface between mac80211 and low-level hardware - * drivers. - */ - -/** - * DOC: Calling mac80211 from interrupts - * - * 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 workqueue function. - */ - -/** - * DOC: Warning - * - * If you're reading this document and not the header file itself, it will - * be incomplete because not all documentation has been converted yet. - */ - -/** - * DOC: Frame format - * - * As a general rule, when frames are passed between mac80211 and the driver, - * they start with the IEEE 802.11 header and include the same octets that are - * sent over the air except for the FCS which should be calculated by the - * hardware. - * - * There are, however, various exceptions to this rule for advanced features: - * - * The first exception is for hardware encryption and decryption offload - * where the IV/ICV may or may not be generated in hardware. - * - * Secondly, when the hardware handles fragmentation, the frame handed to - * the driver from mac80211 is the MSDU, not the MPDU. - * - * Finally, for received frames, the driver is able to indicate that it has - * filled a radiotap header and put that in front of the frame; if it does - * not do so then mac80211 may add this under certain circumstances. - */ - -/** - * struct ieee80211_ht_bss_info - describing BSS's HT characteristics - * - * This structure describes most essential parameters needed - * to describe 802.11n HT characteristics in a BSS - * - * @primary_channel: channel number of primery channel - * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width) - * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection) - */ -struct ieee80211_ht_bss_info { - u8 primary_channel; - u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */ - u8 bss_op_mode; /* use IEEE80211_HT_IE_ */ -}; - -/** - * struct ieee80211_tx_queue_params - transmit queue configuration - * - * The information provided in this structure is required for QoS - * transmit queue configuration. - * - * @aifs: arbitration interface space [0..255, -1: use default] - * @cw_min: minimum contention window [will be a value of the form - * 2^n-1 in the range 1..1023; 0: use default] - * @cw_max: maximum contention window [like @cw_min] - * @burst_time: maximum burst time in units of 0.1ms, 0 meaning disabled - */ -struct ieee80211_tx_queue_params { - int aifs; - int cw_min; - int cw_max; - int burst_time; -}; - -/** - * struct ieee80211_tx_queue_stats_data - transmit queue statistics - * - * @len: number of packets in queue - * @limit: queue length limit - * @count: number of frames sent - */ -struct ieee80211_tx_queue_stats_data { - unsigned int len; - unsigned int limit; - unsigned int count; -}; - -/** - * enum ieee80211_tx_queue - transmit queue number - * - * These constants are used with some callbacks that take a - * queue number to set parameters for a queue. - * - * @IEEE80211_TX_QUEUE_DATA0: data queue 0 - * @IEEE80211_TX_QUEUE_DATA1: data queue 1 - * @IEEE80211_TX_QUEUE_DATA2: data queue 2 - * @IEEE80211_TX_QUEUE_DATA3: data queue 3 - * @IEEE80211_TX_QUEUE_DATA4: data queue 4 - * @IEEE80211_TX_QUEUE_SVP: ?? - * @NUM_TX_DATA_QUEUES: number of data queues - * @IEEE80211_TX_QUEUE_AFTER_BEACON: transmit queue for frames to be - * sent after a beacon - * @IEEE80211_TX_QUEUE_BEACON: transmit queue for beacon frames - * @NUM_TX_DATA_QUEUES_AMPDU: adding more queues for A-MPDU - */ -enum ieee80211_tx_queue { - IEEE80211_TX_QUEUE_DATA0, - IEEE80211_TX_QUEUE_DATA1, - IEEE80211_TX_QUEUE_DATA2, - IEEE80211_TX_QUEUE_DATA3, - IEEE80211_TX_QUEUE_DATA4, - IEEE80211_TX_QUEUE_SVP, - - NUM_TX_DATA_QUEUES, - -/* due to stupidity in the sub-ioctl userspace interface, the items in - * this struct need to have fixed values. As soon as it is removed, we can - * fix these entries. */ - IEEE80211_TX_QUEUE_AFTER_BEACON = 6, - IEEE80211_TX_QUEUE_BEACON = 7, - NUM_TX_DATA_QUEUES_AMPDU = 16 -}; - -struct ieee80211_tx_queue_stats { - struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES_AMPDU]; -}; - -struct ieee80211_low_level_stats { - unsigned int dot11ACKFailureCount; - unsigned int dot11RTSFailureCount; - unsigned int dot11FCSErrorCount; - unsigned int dot11RTSSuccessCount; -}; - -/** - * enum ieee80211_bss_change - BSS change notification flags - * - * These flags are used with the bss_info_changed() callback - * to indicate which BSS parameter changed. - * - * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), - * also implies a change in the AID. - * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed - * @BSS_CHANGED_ERP_PREAMBLE: preamble changed - */ -enum ieee80211_bss_change { - BSS_CHANGED_ASSOC = 1<<0, - BSS_CHANGED_ERP_CTS_PROT = 1<<1, - BSS_CHANGED_ERP_PREAMBLE = 1<<2, -}; - -/** - * struct ieee80211_bss_conf - holds the BSS's changing parameters - * - * This structure keeps information about a BSS (and an association - * to that BSS) that can change during the lifetime of the BSS. - * - * @assoc: association status - * @aid: association ID number, valid only when @assoc is true - * @use_cts_prot: use CTS protection - * @use_short_preamble: use 802.11b short preamble - */ -struct ieee80211_bss_conf { - /* association related data */ - bool assoc; - u16 aid; - /* erp related data */ - bool use_cts_prot; - bool use_short_preamble; -}; - -/* 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). */ - -struct ieee80211_tx_control { - struct ieee80211_vif *vif; - struct ieee80211_rate *tx_rate; - - /* Transmit rate for RTS/CTS frame */ - struct ieee80211_rate *rts_cts_rate; - - /* retry rate for the last retries */ - struct ieee80211_rate *alt_retry_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_SHORT_PREAMBLE (1<<9) -#define IEEE80211_TXCTL_LONG_RETRY_LIMIT (1<<10) /* this frame should be send - * using the through - * set_retry_limit configured - * long retry value */ -#define IEEE80211_TXCTL_EAPOL_FRAME (1<<11) /* internal to mac80211 */ -#define IEEE80211_TXCTL_SEND_AFTER_DTIM (1<<12) /* send this frame after DTIM - * beacon */ -#define IEEE80211_TXCTL_AMPDU (1<<13) /* this frame should be sent - * as part of an A-MPDU */ - u32 flags; /* tx control flags defined - * above */ - u8 key_idx; /* keyidx from hw->set_key(), undefined if - * IEEE80211_TXCTL_DO_NOT_ENCRYPT is set */ - u8 retry_limit; /* 1 = only first attempt, 2 = one retry, .. - * This could be used when set_retry_limit - * is not implemented by the driver */ - u8 antenna_sel_tx; /* 0 = default/diversity, 1 = Ant0, 2 = Ant1 */ - u8 icv_len; /* length of the ICV/MIC field in octets */ - u8 iv_len; /* length of the IV field in octets */ - u8 queue; /* hardware queue to use for this frame; - * 0 = highest, hw->queues-1 = lowest */ - int type; /* internal */ -}; - - -/** - * enum mac80211_rx_flags - receive flags - * - * These flags are used with the @flag member of &struct ieee80211_rx_status. - * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. - * Use together with %RX_FLAG_MMIC_STRIPPED. - * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. - * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header. - * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, - * verification has been done by the hardware. - * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. - * If this flag is set, the stack cannot do any replay detection - * hence the driver or hardware will have to do that. - * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on - * the frame. - * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on - * the frame. - * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) - * is valid. - */ -enum mac80211_rx_flags { - RX_FLAG_MMIC_ERROR = 1<<0, - RX_FLAG_DECRYPTED = 1<<1, - RX_FLAG_RADIOTAP = 1<<2, - RX_FLAG_MMIC_STRIPPED = 1<<3, - RX_FLAG_IV_STRIPPED = 1<<4, - RX_FLAG_FAILED_FCS_CRC = 1<<5, - RX_FLAG_FAILED_PLCP_CRC = 1<<6, - RX_FLAG_TSFT = 1<<7, -}; - -/** - * struct ieee80211_rx_status - receive status - * - * The low-level driver should provide this information (the subset - * supported by hardware) to the 802.11 code with each received - * frame. - * @mactime: MAC timestamp as defined by 802.11 - * @band: the active band when this frame was received - * @freq: frequency the radio was tuned to when receiving this frame, in MHz - * @ssi: signal strength when receiving this frame - * @signal: used as 'qual' in statistics reporting - * @noise: PHY noise when receiving this frame - * @antenna: antenna used - * @rate_idx: index of data rate into band's supported rates - * @flag: %RX_FLAG_* - */ -struct ieee80211_rx_status { - u64 mactime; - enum ieee80211_band band; - int freq; - int ssi; - int signal; - int noise; - int antenna; - int rate_idx; - int flag; -}; - -/** - * enum ieee80211_tx_status_flags - transmit status flags - * - * Status flags to indicate various transmit conditions. - * - * @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted - * because the destination STA was in powersave mode. - * @IEEE80211_TX_STATUS_ACK: Frame was acknowledged - * @IEEE80211_TX_STATUS_AMPDU: The frame was aggregated, so status - * is for the whole aggregation. - */ -enum ieee80211_tx_status_flags { - IEEE80211_TX_STATUS_TX_FILTERED = 1<<0, - IEEE80211_TX_STATUS_ACK = 1<<1, - IEEE80211_TX_STATUS_AMPDU = 1<<2, -}; - -/** - * struct ieee80211_tx_status - transmit status - * - * As much information as possible should be provided for each transmitted - * frame with ieee80211_tx_status(). - * - * @control: a copy of the &struct ieee80211_tx_control passed to the driver - * in the tx() callback. - * @flags: transmit status flags, defined above - * @retry_count: number of retries - * @excessive_retries: set to 1 if the frame was retried many times - * but not acknowledged - * @ampdu_ack_len: number of aggregated frames. - * relevant only if IEEE80211_TX_STATUS_AMPDU was set. - * @ampdu_ack_map: block ack bit map for the aggregation. - * relevant only if IEEE80211_TX_STATUS_AMPDU was set. - * @ack_signal: signal strength of the ACK frame - * @queue_length: ?? REMOVE - * @queue_number: ?? REMOVE - */ -struct ieee80211_tx_status { - struct ieee80211_tx_control control; - u8 flags; - u8 retry_count; - bool excessive_retries; - u8 ampdu_ack_len; - u64 ampdu_ack_map; - int ack_signal; - int queue_length; - int queue_number; -}; - -/** - * enum ieee80211_conf_flags - configuration flags - * - * Flags to define PHY configuration options - * - * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time - * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) - * @IEEE80211_CONF_SUPPORT_HT_MODE: use 802.11n HT capabilities (if supported) - */ -enum ieee80211_conf_flags { - IEEE80211_CONF_SHORT_SLOT_TIME = (1<<0), - IEEE80211_CONF_RADIOTAP = (1<<1), - IEEE80211_CONF_SUPPORT_HT_MODE = (1<<2), -}; - -/** - * 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. - * TODO make a flag - * @beacon_int: beacon interval (TODO make interface config) - * @flags: configuration flags defined above - * @power_level: requested transmit power (in dBm) - * @max_antenna_gain: maximum antenna gain (in dBi) - * @antenna_sel_tx: transmit antenna selection, 0: default/diversity, - * 1/2: antenna 0/1 - * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx - * @ht_conf: describes current self configuration of 802.11n HT capabilies - * @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters - * @channel: the channel to tune to - */ -struct ieee80211_conf { - unsigned int regulatory_domain; - int radio_enabled; - - int beacon_int; - u32 flags; - int power_level; - int max_antenna_gain; - u8 antenna_sel_tx; - u8 antenna_sel_rx; - - struct ieee80211_channel *channel; - - struct ieee80211_ht_info ht_conf; - struct ieee80211_ht_bss_info ht_bss_conf; -}; - -/** - * enum ieee80211_if_types - types of 802.11 network interfaces - * - * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used - * by mac80211 itself - * @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: VLAN interface bound to an AP, drivers - * will never see this type. - */ -enum ieee80211_if_types { - IEEE80211_IF_TYPE_INVALID, - IEEE80211_IF_TYPE_AP, - IEEE80211_IF_TYPE_STA, - IEEE80211_IF_TYPE_IBSS, - IEEE80211_IF_TYPE_MNTR, - IEEE80211_IF_TYPE_WDS, - IEEE80211_IF_TYPE_VLAN, -}; - -/** - * struct ieee80211_vif - per-interface data - * - * Data in this structure is continually present for driver - * use during the life of a virtual interface. - * - * @type: type of this virtual interface - * @drv_priv: data area for driver use, will always be aligned to - * sizeof(void *). - */ -struct ieee80211_vif { - enum ieee80211_if_types type; - /* must be last */ - u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); -}; - -/** - * struct ieee80211_if_init_conf - initial configuration of an interface - * - * @vif: pointer to a driver-use per-interface structure. The pointer - * itself is also used for various functions including - * ieee80211_beacon_get() and ieee80211_get_buffered_bc(). - * @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. - * - * When you allow multiple interfaces to be added to your PHY, take care - * that the hardware can actually handle multiple MAC addresses. However, - * also take care that when there's no interface left with mac_addr != %NULL - * you remove the MAC address from the device to avoid acknowledging packets - * in pure monitor mode. - */ -struct ieee80211_if_init_conf { - enum ieee80211_if_types type; - struct ieee80211_vif *vif; - 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. - * @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. - * @beacon_control: tx_control for the beacon template, this field is only - * valid when the @beacon field was set. - * - * 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; - struct sk_buff *beacon; - struct ieee80211_tx_control *beacon_control; -}; - -/** - * enum ieee80211_key_alg - key algorithm - * @ALG_WEP: WEP40 or WEP104 - * @ALG_TKIP: TKIP - * @ALG_CCMP: CCMP (AES) - */ -enum ieee80211_key_alg { - ALG_WEP, - ALG_TKIP, - ALG_CCMP, -}; - - -/** - * enum ieee80211_key_flags - key flags - * - * These flags are used for communication about keys between the driver - * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. - * - * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates - * that the STA this key will be used with could be using QoS. - * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the - * driver to indicate that it requires IV generation for this - * particular key. - * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by - * the driver for a TKIP key if it requires Michael MIC - * generation in software. - */ -enum ieee80211_key_flags { - IEEE80211_KEY_FLAG_WMM_STA = 1<<0, - IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, - IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, -}; - -/** - * struct ieee80211_key_conf - key information - * - * This key information is given by mac80211 to the driver by - * the set_key() callback in &struct ieee80211_ops. - * - * @hw_key_idx: To be set by the driver, this is the key index the driver - * wants to be given when a frame is transmitted and needs to be - * encrypted in hardware. - * @alg: The key algorithm. - * @flags: key flags, see &enum ieee80211_key_flags. - * @keyidx: the key index (0-3) - * @keylen: key material length - * @key: key material - */ -struct ieee80211_key_conf { - enum ieee80211_key_alg alg; - u8 hw_key_idx; - u8 flags; - s8 keyidx; - u8 keylen; - u8 key[0]; -}; - -/** - * enum set_key_cmd - key command - * - * Used with the set_key() callback in &struct ieee80211_ops, this - * indicates whether a key is being removed or added. - * - * @SET_KEY: a key is set - * @DISABLE_KEY: a key must be disabled - */ -enum set_key_cmd { - SET_KEY, DISABLE_KEY, -}; - -/** - * enum sta_notify_cmd - sta notify command - * - * Used with the sta_notify() callback in &struct ieee80211_ops, this - * indicates addition and removal of a station to station table - * - * @STA_NOTIFY_ADD: a station was added to the station table - * @STA_NOTIFY_REMOVE: a station being removed from the station table - */ -enum sta_notify_cmd { - STA_NOTIFY_ADD, STA_NOTIFY_REMOVE -}; - -/** - * enum ieee80211_hw_flags - hardware flags - * - * These flags are used to indicate hardware capabilities to - * the stack. Generally, flags here should have their meaning - * done in a way that the simplest hardware doesn't need setting - * any particular flags. There are some exceptions to this rule, - * however, so you are advised to review these flags carefully. - * - * @IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE: - * The device only needs to be supplied with a beacon template. - * If you need the host to generate each beacon then don't use - * this flag and call ieee80211_beacon_get() when you need the - * next beacon frame. Note that if you set this flag, you must - * implement the set_tim() callback for powersave mode to work - * properly. - * This flag is only relevant for access-point mode. - * - * @IEEE80211_HW_RX_INCLUDES_FCS: - * Indicates that received frames passed to the stack include - * the FCS at the end. - * - * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: - * 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 and - * multicast frames when there are power saving stations so that - * the driver can fetch them with ieee80211_get_buffered_bc(). Note - * that not setting this flag works properly only when the - * %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because - * otherwise the stack will not know when the DTIM beacon was sent. - * - * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: - * Hardware is not capable of short slot operation on the 2.4 GHz band. - * - * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: - * Hardware is not capable of receiving frames with short preamble on - * the 2.4 GHz band. - */ -enum ieee80211_hw_flags { - IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE = 1<<0, - IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, - IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, - IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, - IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, -}; - -/** - * struct ieee80211_hw - hardware information and state - * - * This structure contains the configuration and hardware - * information for an 802.11 PHY. - * - * @wiphy: This points to the &struct wiphy allocated for this - * 802.11 PHY. You must fill in the @perm_addr and @dev - * members of this structure using SET_IEEE80211_DEV() - * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported - * bands (with channels, bitrates) are registered here. - * - * @conf: &struct ieee80211_conf, device configuration, don't use. - * - * @workqueue: single threaded workqueue available for driver use, - * allocated by mac80211 on registration and flushed on - * unregistration. - * - * @priv: pointer to private area that was allocated for driver use - * along with this structure. - * - * @flags: hardware flags, see &enum ieee80211_hw_flags. - * - * @extra_tx_headroom: headroom to reserve in each transmit skb - * for use by the driver (e.g. for transmit headers.) - * - * @channel_change_time: time (in microseconds) it takes to change channels. - * - * @max_rssi: Maximum value for ssi in RX information, use - * negative numbers for dBm and 0 to indicate no support. - * - * @max_signal: like @max_rssi, but for the signal value. - * - * @max_noise: like @max_rssi, but for the noise value. - * - * @queues: number of available hardware transmit queues for - * data packets. WMM/QoS requires at least four. - * - * @rate_control_algorithm: rate control algorithm for this hardware. - * If unset (NULL), the default algorithm will be used. Must be - * set before calling ieee80211_register_hw(). - * - * @vif_data_size: size (in bytes) of the drv_priv data area - * within &struct ieee80211_vif. - */ -struct ieee80211_hw { - struct ieee80211_conf conf; - struct wiphy *wiphy; - struct workqueue_struct *workqueue; - const char *rate_control_algorithm; - void *priv; - u32 flags; - unsigned int extra_tx_headroom; - int channel_change_time; - int vif_data_size; - u8 queues; - s8 max_rssi; - s8 max_signal; - s8 max_noise; -}; - -/** - * SET_IEEE80211_DEV - set device for 802.11 hardware - * - * @hw: the &struct ieee80211_hw to set the device for - * @dev: the &struct device of this 802.11 device - */ -static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) -{ - set_wiphy_dev(hw->wiphy, dev); -} - -/** - * SET_IEEE80211_PERM_ADDR - set the permanenet MAC address for 802.11 hardware - * - * @hw: the &struct ieee80211_hw to set the MAC address for - * @addr: the address to set - */ -static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) -{ - memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); -} - -/** - * DOC: Hardware crypto acceleration - * - * mac80211 is capable of taking advantage of many hardware - * acceleration designs for encryption and decryption operations. - * - * The set_key() callback in the &struct ieee80211_ops for a given - * device is called to enable hardware acceleration of encryption and - * decryption. The callback takes an @address parameter that will be - * the broadcast address for default keys, the other station's hardware - * address for individual keys or the zero address for keys that will - * be used only for transmission. - * Multiple transmission keys with the same key index may be used when - * VLANs are configured for an access point. - * - * The @local_address parameter will always be set to our own address, - * this is only relevant if you support multiple local addresses. - * - * When transmitting, the TX control data will use the @hw_key_idx - * selected by the driver by modifying the &struct ieee80211_key_conf - * pointed to by the @key parameter to the set_key() function. - * - * The set_key() call for the %SET_KEY command should return 0 if - * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be - * added; if you return 0 then hw_key_idx must be assigned to the - * hardware key index, you are free to use the full u8 range. - * - * When the cmd is %DISABLE_KEY then it must succeed. - * - * Note that it is permissible to not decrypt a frame even if a key - * for it has been uploaded to hardware, the stack will not make any - * decision based on whether a key has been uploaded or not but rather - * based on the receive flags. - * - * The &struct ieee80211_key_conf structure pointed to by the @key - * parameter is guaranteed to be valid until another call to set_key() - * removes it, but it can only be used as a cookie to differentiate - * keys. - */ - -/** - * DOC: Frame filtering - * - * mac80211 requires to see many management frames for proper - * operation, and users may want to see many more frames when - * in monitor mode. However, for best CPU usage and power consumption, - * having as few frames as possible percolate through the stack is - * desirable. Hence, the hardware should filter as much as possible. - * - * To achieve this, mac80211 uses filter flags (see below) to tell - * the driver's configure_filter() function which frames should be - * passed to mac80211 and which should be filtered out. - * - * The configure_filter() callback is invoked with the parameters - * @mc_count and @mc_list for the combined multicast address list - * of all virtual interfaces, @changed_flags telling which flags - * were changed and @total_flags with the new flag states. - * - * If your device has no multicast address filters your driver will - * need to check both the %FIF_ALLMULTI flag and the @mc_count - * parameter to see whether multicast frames should be accepted - * or dropped. - * - * All unsupported flags in @total_flags must be cleared, i.e. you - * should clear all bits except those you honoured. - */ - -/** - * enum ieee80211_filter_flags - hardware filter flags - * - * These flags determine what the filter in hardware should be - * programmed to let through and what should not be passed to the - * stack. It is always safe to pass more frames than requested, - * but this has negative impact on power consumption. - * - * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, - * think of the BSS as your network segment and then this corresponds - * to the regular ethernet device promiscuous mode. - * - * @FIF_ALLMULTI: pass all multicast frames, this is used if requested - * by the user or if the hardware is not capable of filtering by - * multicast address. - * - * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the - * %RX_FLAG_FAILED_FCS_CRC for them) - * - * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set - * the %RX_FLAG_FAILED_PLCP_CRC for them - * - * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate - * to the hardware that it should not filter beacons or probe responses - * by BSSID. Filtering them can greatly reduce the amount of processing - * mac80211 needs to do and the amount of CPU wakeups, so you should - * honour this flag if possible. - * - * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then - * only those addressed to this station - * - * @FIF_OTHER_BSS: pass frames destined to other BSSes - */ -enum ieee80211_filter_flags { - FIF_PROMISC_IN_BSS = 1<<0, - FIF_ALLMULTI = 1<<1, - FIF_FCSFAIL = 1<<2, - FIF_PLCPFAIL = 1<<3, - FIF_BCN_PRBRESP_PROMISC = 1<<4, - FIF_CONTROL = 1<<5, - FIF_OTHER_BSS = 1<<6, -}; - -/** - * enum ieee80211_ampdu_mlme_action - A-MPDU actions - * - * These flags are used with the ampdu_action() callback in - * &struct ieee80211_ops to indicate which action is needed. - * @IEEE80211_AMPDU_RX_START: start Rx aggregation - * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation - * @IEEE80211_AMPDU_TX_START: start Tx aggregation - * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation - */ -enum ieee80211_ampdu_mlme_action { - IEEE80211_AMPDU_RX_START, - IEEE80211_AMPDU_RX_STOP, - IEEE80211_AMPDU_TX_START, - IEEE80211_AMPDU_TX_STOP, -}; - -/** - * struct ieee80211_ops - callbacks from mac80211 to the driver - * - * This structure contains various callbacks that the driver may - * handle or, in some cases, must handle, for example to configure - * the hardware to a new channel or to transmit a frame. - * - * @tx: 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. Must be implemented and - * atomic. - * - * @start: Called before the first netdevice attached to the hardware - * is enabled. This should turn on the hardware and must turn on - * frame reception (for possibly enabled monitor interfaces.) - * Returns negative error codes, these may be seen in userspace, - * or zero. - * When the device is started it should not have a MAC address - * to avoid acknowledging frames before a non-monitor device - * is added. - * Must be implemented. - * - * @stop: Called after last netdevice attached to the hardware - * is disabled. This should turn off the hardware (at least - * it must turn off frame reception.) - * May be called right after add_interface if that rejects - * an interface. - * Must be implemented. - * - * @add_interface: Called when a netdevice attached to the hardware is - * enabled. Because it is not called for monitor mode devices, @open - * and @stop must be implemented. - * The driver should perform any initialization it needs before - * the device can be enabled. The initial configuration for the - * interface is given in the conf parameter. - * The callback may refuse to add an interface by returning a - * negative error code (which will be seen in userspace.) - * Must be implemented. - * - * @remove_interface: Notifies a driver that an interface is going down. - * The @stop callback is called after this if it is the last interface - * and no monitor interfaces are present. - * When all interfaces are removed, the MAC address in the hardware - * must be cleared so the device no longer acknowledges packets, - * the mac_addr member of the conf structure is, however, set to the - * MAC address of the device going away. - * Hence, this callback must be implemented. - * - * @config: Handler for configuration requests. IEEE 802.11 code calls this - * function to change hardware configuration, e.g., channel. - * - * @config_interface: Handler for configuration requests related to interfaces - * (e.g. BSSID changes.) - * - * @bss_info_changed: Handler for configuration requests related to BSS - * parameters that may vary during BSS's lifespan, and may affect low - * level driver (e.g. assoc/disassoc status, erp parameters). - * This function should not be used if no BSS has been set, unless - * for association indication. The @changed parameter indicates which - * of the bss parameters has changed when a call is made. This callback - * has to be atomic. - * - * @configure_filter: Configure the device's RX filter. - * See the section "Frame filtering" for more information. - * This callback must be implemented and atomic. - * - * @set_tim: Set TIM bit. If the hardware/firmware takes care of beacon - * generation (that is, %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is set) - * mac80211 calls this function when a TIM bit must be set or cleared - * for a given AID. Must be atomic. - * - * @set_key: See the section "Hardware crypto acceleration" - * This callback can sleep, and is only called between add_interface - * and remove_interface calls, i.e. while the interface with the - * given local_address is enabled. - * - * @hw_scan: Ask the hardware to service the scan request, no need to start - * the scan state machine in stack. The scan must honour the channel - * configuration done by the regulatory agent in the wiphy's registered - * bands. - * - * @get_stats: return low-level statistics - * - * @get_tkip_seq: If your device implements TKIP encryption in hardware this - * callback should be provided to read the TKIP transmit IVs (both IV32 - * and IV16) for the given key from hardware. - * - * @set_rts_threshold: Configuration of RTS threshold (if device needs it) - * - * @set_frag_threshold: 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. - * - * @set_retry_limit: Configuration of retry limits (if device needs it) - * - * @sta_notify: Notifies low level driver about addition or removal - * of assocaited station or AP. - * - * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), - * bursting) for a hardware TX queue. The @queue parameter uses the - * %IEEE80211_TX_QUEUE_* constants. Must be atomic. - * - * @get_tx_stats: 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. - * - * @get_tsf: 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. Must be atomic. - * - * @reset_tsf: 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. - * - * @beacon_update: Setup beacon data for IBSS beacons. Unlike access point, - * IBSS uses a fixed beacon frame which is configured using this - * function. - * If the driver returns success (0) from this callback, it owns - * the skb. That means the driver is responsible to kfree_skb() it. - * The control structure is not dynamically allocated. That means the - * driver does not own the pointer and if it needs it somewhere - * outside of the context of this function, it must copy it - * somewhere else. - * This handler is required only for IBSS mode. - * - * @tx_last_beacon: 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. - * - * @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic. - * - * @ampdu_action: Perform a certain A-MPDU action - * The RA/TID combination determines the destination and TID we want - * the ampdu action to be performed for. The action is defined through - * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) - * is the first frame we expect to perform the action on. notice - * that TX/RX_STOP can pass NULL for this parameter. - */ -struct ieee80211_ops { - int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_tx_control *control); - int (*start)(struct ieee80211_hw *hw); - void (*stop)(struct ieee80211_hw *hw); - int (*add_interface)(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf); - void (*remove_interface)(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf); - int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf); - int (*config_interface)(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_if_conf *conf); - void (*bss_info_changed)(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *info, - u32 changed); - void (*configure_filter)(struct ieee80211_hw *hw, - unsigned int changed_flags, - unsigned int *total_flags, - int mc_count, struct dev_addr_list *mc_list); - int (*set_tim)(struct ieee80211_hw *hw, int aid, int set); - int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, - const u8 *local_address, const u8 *address, - struct ieee80211_key_conf *key); - int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); - int (*get_stats)(struct ieee80211_hw *hw, - struct ieee80211_low_level_stats *stats); - void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, - u32 *iv32, u16 *iv16); - int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); - int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); - int (*set_retry_limit)(struct ieee80211_hw *hw, - u32 short_retry, u32 long_retr); - void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - enum sta_notify_cmd, const u8 *addr); - int (*conf_tx)(struct ieee80211_hw *hw, int queue, - const struct ieee80211_tx_queue_params *params); - int (*get_tx_stats)(struct ieee80211_hw *hw, - struct ieee80211_tx_queue_stats *stats); - u64 (*get_tsf)(struct ieee80211_hw *hw); - void (*reset_tsf)(struct ieee80211_hw *hw); - int (*beacon_update)(struct ieee80211_hw *hw, - struct sk_buff *skb, - struct ieee80211_tx_control *control); - int (*tx_last_beacon)(struct ieee80211_hw *hw); - int (*conf_ht)(struct ieee80211_hw *hw, struct ieee80211_conf *conf); - int (*ampdu_action)(struct ieee80211_hw *hw, - enum ieee80211_ampdu_mlme_action action, - const u8 *addr, u16 tid, u16 *ssn); -}; - -/** - * ieee80211_alloc_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. - * mac80211 allocates a private data area for the driver pointed to by - * @priv in &struct ieee80211_hw, the size of this area is given as - * @priv_data_len. - * - * @priv_data_len: length of private data - * @ops: callbacks for this device - */ -struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, - const struct ieee80211_ops *ops); - -/** - * ieee80211_register_hw - Register hardware device - * - * You must call this function before any other functions - * except ieee80211_register_hwmode. - * - * @hw: the device to register as returned by ieee80211_alloc_hw() - */ -int ieee80211_register_hw(struct ieee80211_hw *hw); - -#ifdef CONFIG_MAC80211_LEDS -extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); -extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); -extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); -extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); -#endif -/** - * ieee80211_get_tx_led_name - get name of TX LED - * - * mac80211 creates a transmit LED trigger for each wireless hardware - * that can be used to drive LEDs if your driver registers a LED device. - * This function returns the name (or %NULL if not configured for LEDs) - * of the trigger so you can automatically link the LED device. - * - * @hw: the hardware to get the LED trigger name for - */ -static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) -{ -#ifdef CONFIG_MAC80211_LEDS - return __ieee80211_get_tx_led_name(hw); -#else - return NULL; -#endif -} - -/** - * ieee80211_get_rx_led_name - get name of RX LED - * - * mac80211 creates a receive LED trigger for each wireless hardware - * that can be used to drive LEDs if your driver registers a LED device. - * This function returns the name (or %NULL if not configured for LEDs) - * of the trigger so you can automatically link the LED device. - * - * @hw: the hardware to get the LED trigger name for - */ -static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) -{ -#ifdef CONFIG_MAC80211_LEDS - return __ieee80211_get_rx_led_name(hw); -#else - return NULL; -#endif -} - -/** - * ieee80211_get_assoc_led_name - get name of association LED - * - * mac80211 creates a association LED trigger for each wireless hardware - * that can be used to drive LEDs if your driver registers a LED device. - * This function returns the name (or %NULL if not configured for LEDs) - * of the trigger so you can automatically link the LED device. - * - * @hw: the hardware to get the LED trigger name for - */ -static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) -{ -#ifdef CONFIG_MAC80211_LEDS - return __ieee80211_get_assoc_led_name(hw); -#else - return NULL; -#endif -} - -/** - * ieee80211_get_radio_led_name - get name of radio LED - * - * mac80211 creates a radio change LED trigger for each wireless hardware - * that can be used to drive LEDs if your driver registers a LED device. - * This function returns the name (or %NULL if not configured for LEDs) - * of the trigger so you can automatically link the LED device. - * - * @hw: the hardware to get the LED trigger name for - */ -static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) -{ -#ifdef CONFIG_MAC80211_LEDS - return __ieee80211_get_radio_led_name(hw); -#else - return NULL; -#endif -} - -/** - * ieee80211_unregister_hw - Unregister a hardware device - * - * This function instructs mac80211 to free allocated resources - * and unregister netdevices from the networking subsystem. - * - * @hw: the hardware to unregister - */ -void ieee80211_unregister_hw(struct ieee80211_hw *hw); - -/** - * ieee80211_free_hw - free hardware descriptor - * - * This function frees everything that was allocated, including the - * private data for the driver. You must call ieee80211_unregister_hw() - * before calling this function - * - * @hw: the hardware to free - */ -void ieee80211_free_hw(struct ieee80211_hw *hw); - -/* trick to avoid symbol clashes with the ieee80211 subsystem */ -void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_rx_status *status); - -/** - * ieee80211_rx - receive frame - * - * Use this function to hand received frames to mac80211. The receive - * buffer in @skb must start with an IEEE 802.11 header or a radiotap - * header if %RX_FLAG_RADIOTAP is set in the @status flags. - * - * This function may not be called in IRQ context. - * - * @hw: the hardware this frame came in on - * @skb: the buffer to receive, owned by mac80211 after this call - * @status: status of this frame; the status pointer need not be valid - * after this function returns - */ -static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_rx_status *status) -{ - __ieee80211_rx(hw, skb, status); -} - -/** - * ieee80211_rx_irqsafe - receive frame - * - * Like ieee80211_rx() but can be called in IRQ context - * (internally defers to a workqueue.) - * - * @hw: the hardware this frame came in on - * @skb: the buffer to receive, owned by mac80211 after this call - * @status: status of this frame; the status pointer need not be valid - * after this function returns and is not freed by mac80211, - * it is recommended that it points to a stack area - */ -void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, - struct sk_buff *skb, - struct ieee80211_rx_status *status); - -/** - * ieee80211_tx_status - transmit status callback - * - * Call this function for all transmitted frames after they have been - * transmitted. It is permissible to not call this function for - * multicast frames but this can affect statistics. - * - * @hw: the hardware the frame was transmitted by - * @skb: the frame that was transmitted, owned by mac80211 after this call - * @status: status information for this frame; the status pointer need not - * be valid after this function returns and is not freed by mac80211, - * it is recommended that it points to a stack area - */ -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(). - * @vif: &struct ieee80211_vif pointer 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, - struct ieee80211_vif *vif, - struct ieee80211_tx_control *control); - -/** - * ieee80211_rts_get - RTS frame generation function - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * @frame: pointer to the frame that is going to be protected by the RTS. - * @frame_len: the frame length (in octets). - * @frame_txctl: &struct ieee80211_tx_control of the frame. - * @rts: The buffer where to store the RTS frame. - * - * If the RTS frames are generated by the host system (i.e., not in - * hardware/firmware), the low-level driver uses this function to receive - * the next RTS frame from the 802.11 code. The low-level is responsible - * for calling this function before and RTS frame is needed. - */ -void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - const void *frame, size_t frame_len, - const struct ieee80211_tx_control *frame_txctl, - struct ieee80211_rts *rts); - -/** - * ieee80211_rts_duration - Get the duration field for an RTS frame - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * @frame_len: the length of the frame that is going to be protected by the RTS. - * @frame_txctl: &struct ieee80211_tx_control of the frame. - * - * If the RTS is generated in firmware, but the host system must provide - * the duration field, the low-level driver uses this function to receive - * the duration field value in little-endian byteorder. - */ -__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, size_t frame_len, - const struct ieee80211_tx_control *frame_txctl); - -/** - * ieee80211_ctstoself_get - CTS-to-self frame generation function - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * @frame: pointer to the frame that is going to be protected by the CTS-to-self. - * @frame_len: the frame length (in octets). - * @frame_txctl: &struct ieee80211_tx_control of the frame. - * @cts: The buffer where to store the CTS-to-self frame. - * - * If the CTS-to-self frames are generated by the host system (i.e., not in - * hardware/firmware), the low-level driver uses this function to receive - * the next CTS-to-self frame from the 802.11 code. The low-level is responsible - * for calling this function before and CTS-to-self frame is needed. - */ -void ieee80211_ctstoself_get(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - const void *frame, size_t frame_len, - const struct ieee80211_tx_control *frame_txctl, - struct ieee80211_cts *cts); - -/** - * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. - * @frame_txctl: &struct ieee80211_tx_control of the frame. - * - * If the CTS-to-self is generated in firmware, but the host system must provide - * the duration field, the low-level driver uses this function to receive - * the duration field value in little-endian byteorder. - */ -__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - size_t frame_len, - const struct ieee80211_tx_control *frame_txctl); - -/** - * ieee80211_generic_frame_duration - Calculate the duration field for a frame - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * @frame_len: the length of the frame. - * @rate: the rate at which the frame is going to be transmitted. - * - * Calculate the duration field of some generic frame, given its - * length and transmission rate (in 100kbps). - */ -__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - size_t frame_len, - struct ieee80211_rate *rate); - -/** - * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer 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, struct ieee80211_vif *vif, - struct ieee80211_tx_control *control); - -/** - * ieee80211_get_hdrlen_from_skb - get header length from data - * - * Given an skb 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. - * - * @skb: the frame - */ -int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); - -/** - * ieee80211_get_hdrlen - get header length from frame control - * - * This function returns the 802.11 header length in bytes (not including - * encryption headers.) - * - * @fc: the frame control field (in CPU endianness) - */ -int ieee80211_get_hdrlen(u16 fc); - -/** - * 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_wake_queues - wake all queues - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * - * Drivers should use this function instead of netif_wake_queue. - */ -void ieee80211_wake_queues(struct ieee80211_hw *hw); - -/** - * ieee80211_scan_completed - completed hardware scan - * - * When hardware scan offload is used (i.e. the hw_scan() callback is - * assigned) this function needs to be called by the driver to notify - * mac80211 that the scan finished. - * - * @hw: the hardware that finished the scan - */ -void ieee80211_scan_completed(struct ieee80211_hw *hw); - -/** - * ieee80211_iterate_active_interfaces - iterate active interfaces - * - * This function iterates over the interfaces associated with a given - * hardware that are currently active and calls the callback for them. - * - * @hw: the hardware struct of which the interfaces should be iterated over - * @iterator: the iterator function to call, cannot sleep - * @data: first argument of the iterator function - */ -void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, - void (*iterator)(void *data, u8 *mac, - struct ieee80211_vif *vif), - void *data); - -/** - * ieee80211_start_tx_ba_session - Start a tx Block Ack session. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient - * @tid: the TID to BA on. - * @return: success if addBA request was sent, failure otherwise - * - * Although mac80211/low level driver/user space application can estimate - * the need to start aggregation on a certain RA/TID, the session level - * will be managed by the mac80211. - */ -int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid); - -/** - * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient. - * @tid: the TID to BA on. - * - * This function must be called by low level driver once it has - * finished with preparations for the BA session. - */ -void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid); - -/** - * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient. - * @tid: the TID to BA on. - * - * This function must be called by low level driver once it has - * finished with preparations for the BA session. - * This version of the function is irq safe. - */ -void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, - u16 tid); - -/** - * ieee80211_stop_tx_ba_session - Stop a Block Ack session. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient - * @tid: the TID to stop BA. - * @initiator: if indicates initiator DELBA frame will be sent. - * @return: error if no sta with matching da found, success otherwise - * - * Although mac80211/low level driver/user space application can estimate - * the need to stop aggregation on a certain RA/TID, the session level - * will be managed by the mac80211. - */ -int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, - u8 *ra, u16 tid, - enum ieee80211_back_parties initiator); - -/** - * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient. - * @tid: the desired TID to BA on. - * - * This function must be called by low level driver once it has - * finished with preparations for the BA session tear down. - */ -void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid); - -/** - * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient. - * @tid: the desired TID to BA on. - * - * This function must be called by low level driver once it has - * finished with preparations for the BA session tear down. - * This version of the function is irq safe. - */ -void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, - u16 tid); - -#endif /* MAC80211_H */ |