/* Copyright (C) 2004 - 2009 Ivo van Doorn Copyright (C) 2004 - 2009 Gertjan van Wingerde This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Module: rt2x00lib Abstract: Data structures and definitions for the rt2x00lib module. */ #ifndef RT2X00LIB_H #define RT2X00LIB_H /* * Interval defines */ #define WATCHDOG_INTERVAL round_jiffies_relative(HZ) #define LINK_TUNE_INTERVAL round_jiffies_relative(HZ) /* * rt2x00_rate: Per rate device information */ struct rt2x00_rate { unsigned short flags; #define DEV_RATE_CCK 0x0001 #define DEV_RATE_OFDM 0x0002 #define DEV_RATE_SHORT_PREAMBLE 0x0004 unsigned short bitrate; /* In 100kbit/s */ unsigned short ratemask; unsigned short plcp; unsigned short mcs; }; extern const struct rt2x00_rate rt2x00_supported_rates[12]; static inline const struct rt2x00_rate *rt2x00_get_rate(const u16 hw_value) { return &rt2x00_supported_rates[hw_value & 0xff]; } #define RATE_MCS(__mode, __mcs) \ ( (((__mode) & 0x00ff) << 8) | ((__mcs) & 0x00ff) ) static inline int rt2x00_get_rate_mcs(const u16 mcs_value) { return (mcs_value & 0x00ff); } /* * Radio control handlers. */ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev); void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev); void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state); /* * Initialization handlers. */ int rt2x00lib_start(struct rt2x00_dev *rt2x00dev); void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev); /* * Configuration handlers. */ void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf, enum nl80211_iftype type, const u8 *mac, const u8 *bssid); void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf, struct ieee80211_bss_conf *conf); void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev, struct antenna_setup ant); void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf, const unsigned int changed_flags); /** * DOC: Queue handlers */ /** * rt2x00queue_alloc_rxskb - allocate a skb for RX purposes. * @rt2x00dev: Pointer to &struct rt2x00_dev. * @queue: The queue for which the skb will be applicable. */ struct sk_buff *rt2x00queue_alloc_rxskb(struct rt2x00_dev *rt2x00dev, struct queue_entry *entry); /** * rt2x00queue_free_skb - free a skb * @rt2x00dev: Pointer to &struct rt2x00_dev. * @skb: The skb to free. */ void rt2x00queue_free_skb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb); /** * rt2x00queue_align_frame - Align 802.11 frame to 4-byte boundary * @skb: The skb to align * * Align the start of the 802.11 frame to a 4-byte boundary, this could * mean the payload is not aligned properly though. */ void rt2x00queue_align_frame(struct sk_buff *skb); /** * rt2x00queue_align_payload - Align 802.11 payload to 4-byte boundary * @skb: The skb to align * @header_length: Length of 802.11 header * * Align the 802.11 payload to a 4-byte boundary, this could * mean the header is not aligned properly though. */ void rt2x00queue_align_payload(struct sk_buff *skb, unsigned int header_length); /** * rt2x00queue_insert_l2pad - Align 802.11 header & payload to 4-byte boundary * @skb: The skb to align * @header_length: Length of 802.11 header * * Apply L2 padding to align both header and payload to 4-byte boundary */ void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length); /** * rt2x00queue_insert_l2pad - Remove L2 padding from 802.11 frame * @skb: The skb to align * @header_length: Length of 802.11 header * * Remove L2 padding used to align both header and payload to 4-byte boundary, * by removing the L2 padding the header will no longer be 4-byte aligned. */ void rt2x00queue_remove_l2pad(struct sk_buff *skb, unsigned int header_length); /** * rt2x00queue_write_tx_frame - Write TX frame to hardware * @queue: Queue over which the frame should be send * @skb: The skb to send * @local: frame is not from mac80211 */ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb, bool local); /** * rt2x00queue_update_beacon - Send new beacon from mac80211 to hardware * @rt2x00dev: Pointer to &struct rt2x00_dev. * @vif: Interface for which the beacon should be updated. * @enable_beacon: Enable beaconing */ int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev, struct ieee80211_vif *vif, const bool enable_beacon); /** * rt2x00queue_index_inc - Index incrementation function * @queue: Queue (&struct data_queue) to perform the action on. * @index: Index type (&enum queue_index) to perform the action on. * * This function will increase the requested index on the queue, * it will grab the appropriate locks and handle queue overflow events by * resetting the index to the start of the queue. */ void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index); /** * rt2x00queue_stop_queues - Halt all data queues * @rt2x00dev: Pointer to &struct rt2x00_dev. * * This function will loop through all available queues to stop * any pending outgoing frames. */ void rt2x00queue_stop_queues(struct rt2x00_dev *rt2x00dev); /** * rt2x00queue_init_queues - Initialize all data queues * @rt2x00dev: Pointer to &struct rt2x00_dev. * * This function will loop through all available queues to clear all * index numbers and set the queue entry to the correct initialization * state. */ void rt2x00queue_init_queues(struct rt2x00_dev *rt2x00dev); int rt2x00queue_initialize(struct rt2x00_dev *rt2x00dev); void rt2x00queue_uninitialize(struct rt2x00_dev *rt2x00dev); int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev); void rt2x00queue_free(struct rt2x00_dev *rt2x00dev); /** * rt2x00link_update_stats - Update link statistics from RX frame * @rt2x00dev: Pointer to &struct rt2x00_dev. * @skb: Received frame * @rxdesc: Received frame descriptor * * Update link statistics based on the information from the * received frame descriptor. */ void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb, struct rxdone_entry_desc *rxdesc); /** * rt2x00link_start_tuner - Start periodic link tuner work * @rt2x00dev: Pointer to &struct rt2x00_dev. * * This start the link tuner periodic work, this work will * be executed periodically until &rt2x00link_stop_tuner has * been called. */ void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev); /** * rt2x00link_stop_tuner - Stop periodic link tuner work * @rt2x00dev: Pointer to &struct rt2x00_dev. * * After this function completed the link tuner will not * be running until &rt2x00link_start_tuner is called. */ void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev); /** * rt2x00link_reset_tuner - Reset periodic link tuner work * @rt2x00dev: Pointer to &struct rt2x00_dev. * @antenna: Should the antenna tuning also be reset * * The VGC limit configured in the hardware will be reset to 0 * which forces the driver to rediscover the correct value for * the current association. This is needed when configuration * options have changed which could drastically change the * SNR level or link quality (i.e. changing the antenna setting). * * Resetting the link tuner will also cause the periodic work counter * to be reset. Any driver which has a fixed limit on the number * of rounds the link tuner is supposed to work will accept the * tuner actions again if this limit was previously reached. * * If @antenna is set to true a the software antenna diversity * tuning will also be reset. */ void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna); /** * rt2x00link_start_watchdog - Start periodic watchdog monitoring * @rt2x00dev: Pointer to &struct rt2x00_dev. * * This start the watchdog periodic work, this work will *be executed periodically until &rt2x00link_stop_watchdog has * been called. */ void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev); /** * rt2x00link_stop_watchdog - Stop periodic watchdog monitoring * @rt2x00dev: Pointer to &struct rt2x00_dev. * * After this function completed the watchdog monitoring will not * be running until &rt2x00link_start_watchdog is called. */ void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev); /** * rt2x00link_register - Initialize link tuning & watchdog functionality * @rt2x00dev: Pointer to &struct rt2x00_dev. * * Initialize work structure and all link tuning and watchdog related * parameters. This will not start the periodic work itself. */ void rt2x00link_register(struct rt2x00_dev *rt2x00dev); /* * Firmware handlers. */ #ifdef CONFIG_RT2X00_LIB_FIRMWARE int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev); void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev); #else static inline int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev) { return 0; } static inline void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev) { } #endif /* CONFIG_RT2X00_LIB_FIRMWARE */ /* * Debugfs handlers. */ #ifdef CONFIG_RT2X00_LIB_DEBUGFS void rt2x00debug_register(struct rt2x00_dev *rt2x00dev); void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev); void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev, struct rxdone_entry_desc *rxdesc); #else static inline void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) { } static inline void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev) { } static inline void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev, struct rxdone_entry_desc *rxdesc) { } #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ /* * Crypto handlers. */ #ifdef CONFIG_RT2X00_LIB_CRYPTO enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key); void rt2x00crypto_create_tx_descriptor(struct queue_entry *entry, struct txentry_desc *txdesc); unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb); void rt2x00crypto_tx_copy_iv(struct sk_buff *skb, struct txentry_desc *txdesc); void rt2x00crypto_tx_remove_iv(struct sk_buff *skb, struct txentry_desc *txdesc); void rt2x00crypto_tx_insert_iv(struct sk_buff *skb, unsigned int header_length); void rt2x00crypto_rx_insert_iv(struct sk_buff *skb, unsigned int header_length, struct rxdone_entry_desc *rxdesc); #else static inline enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key) { return CIPHER_NONE; } static inline void rt2x00crypto_create_tx_descriptor(struct queue_entry *entry, struct txentry_desc *txdesc) { } static inline unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb) { return 0; } static inline void rt2x00crypto_tx_copy_iv(struct sk_buff *skb, struct txentry_desc *txdesc) { } static inline void rt2x00crypto_tx_remove_iv(struct sk_buff *skb, struct txentry_desc *txdesc) { } static inline void rt2x00crypto_tx_insert_iv(struct sk_buff *skb, unsigned int header_length) { } static inline void rt2x00crypto_rx_insert_iv(struct sk_buff *skb, unsigned int header_length, struct rxdone_entry_desc *rxdesc) { } #endif /* CONFIG_RT2X00_LIB_CRYPTO */ /* * HT handlers. */ #ifdef CONFIG_RT2X00_LIB_HT void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, struct txentry_desc *txdesc, const struct rt2x00_rate *hwrate); u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf); #else static inline void rt2x00ht_create_tx_descriptor(struct queue_entry *entry, struct txentry_desc *txdesc, const struct rt2x00_rate *hwrate) { } static inline u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf) { return conf->channel->hw_value; } #endif /* CONFIG_RT2X00_LIB_HT */ /* * RFkill handlers. */ static inline void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev) { if (test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) wiphy_rfkill_start_polling(rt2x00dev->hw->wiphy); } static inline void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev) { if (test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) wiphy_rfkill_stop_polling(rt2x00dev->hw->wiphy); } /* * LED handlers */ #ifdef CONFIG_RT2X00_LIB_LEDS void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, int rssi); void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev, bool enabled); void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev, bool enabled); void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev, bool enabled); void rt2x00leds_register(struct rt2x00_dev *rt2x00dev); void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev); void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev); void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev); #else static inline void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, int rssi) { } static inline void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev, bool enabled) { } static inline void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev, bool enabled) { } static inline void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev, bool enabled) { } static inline void rt2x00leds_register(struct rt2x00_dev *rt2x00dev) { } static inline void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev) { } static inline void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev) { } static inline void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev) { } #endif /* CONFIG_RT2X00_LIB_LEDS */ #endif /* RT2X00LIB_H */