458 lines
14 KiB
C
458 lines
14 KiB
C
/*
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Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
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Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
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<http://rt2x00.serialmonkey.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the
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Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Module: rt2x00lib
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Abstract: Data structures and definitions for the rt2x00lib module.
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*/
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#ifndef RT2X00LIB_H
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#define RT2X00LIB_H
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/*
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* Interval defines
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*/
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#define WATCHDOG_INTERVAL round_jiffies_relative(HZ)
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#define LINK_TUNE_INTERVAL round_jiffies_relative(HZ)
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#define AGC_INTERVAL round_jiffies_relative(4 * HZ)
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/*
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* rt2x00_rate: Per rate device information
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*/
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struct rt2x00_rate {
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unsigned short flags;
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#define DEV_RATE_CCK 0x0001
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#define DEV_RATE_OFDM 0x0002
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#define DEV_RATE_SHORT_PREAMBLE 0x0004
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unsigned short bitrate; /* In 100kbit/s */
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unsigned short ratemask;
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unsigned short plcp;
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unsigned short mcs;
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};
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extern const struct rt2x00_rate rt2x00_supported_rates[12];
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static inline const struct rt2x00_rate *rt2x00_get_rate(const u16 hw_value)
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{
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return &rt2x00_supported_rates[hw_value & 0xff];
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}
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#define RATE_MCS(__mode, __mcs) \
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((((__mode) & 0x00ff) << 8) | ((__mcs) & 0x00ff))
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static inline int rt2x00_get_rate_mcs(const u16 mcs_value)
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{
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return (mcs_value & 0x00ff);
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}
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/*
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* Radio control handlers.
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*/
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int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev);
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void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev);
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/*
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* Initialization handlers.
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*/
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int rt2x00lib_start(struct rt2x00_dev *rt2x00dev);
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void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev);
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/*
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* Configuration handlers.
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*/
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void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev,
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struct rt2x00_intf *intf,
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enum nl80211_iftype type,
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const u8 *mac, const u8 *bssid);
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void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
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struct rt2x00_intf *intf,
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struct ieee80211_bss_conf *conf,
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u32 changed);
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void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
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struct antenna_setup ant);
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void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
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struct ieee80211_conf *conf,
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const unsigned int changed_flags);
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/**
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* DOC: Queue handlers
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*/
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/**
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* rt2x00queue_alloc_rxskb - allocate a skb for RX purposes.
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* @entry: The entry for which the skb will be applicable.
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*/
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struct sk_buff *rt2x00queue_alloc_rxskb(struct queue_entry *entry);
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/**
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* rt2x00queue_free_skb - free a skb
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* @entry: The entry for which the skb will be applicable.
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*/
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void rt2x00queue_free_skb(struct queue_entry *entry);
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/**
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* rt2x00queue_align_frame - Align 802.11 frame to 4-byte boundary
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* @skb: The skb to align
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*
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* Align the start of the 802.11 frame to a 4-byte boundary, this could
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* mean the payload is not aligned properly though.
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*/
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void rt2x00queue_align_frame(struct sk_buff *skb);
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/**
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* rt2x00queue_insert_l2pad - Align 802.11 header & payload to 4-byte boundary
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* @skb: The skb to align
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* @header_length: Length of 802.11 header
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*
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* Apply L2 padding to align both header and payload to 4-byte boundary
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*/
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void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length);
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/**
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* rt2x00queue_insert_l2pad - Remove L2 padding from 802.11 frame
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* @skb: The skb to align
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* @header_length: Length of 802.11 header
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*
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* Remove L2 padding used to align both header and payload to 4-byte boundary,
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* by removing the L2 padding the header will no longer be 4-byte aligned.
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*/
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void rt2x00queue_remove_l2pad(struct sk_buff *skb, unsigned int header_length);
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/**
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* rt2x00queue_write_tx_frame - Write TX frame to hardware
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* @queue: Queue over which the frame should be send
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* @skb: The skb to send
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* @local: frame is not from mac80211
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*/
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int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb,
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bool local);
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/**
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* rt2x00queue_update_beacon - Send new beacon from mac80211
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* to hardware. Handles locking by itself (mutex).
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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* @vif: Interface for which the beacon should be updated.
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*/
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int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev,
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struct ieee80211_vif *vif);
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/**
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* rt2x00queue_update_beacon_locked - Send new beacon from mac80211
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* to hardware. Caller needs to ensure locking.
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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* @vif: Interface for which the beacon should be updated.
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*/
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int rt2x00queue_update_beacon_locked(struct rt2x00_dev *rt2x00dev,
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struct ieee80211_vif *vif);
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/**
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* rt2x00queue_clear_beacon - Clear beacon in hardware
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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* @vif: Interface for which the beacon should be updated.
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*/
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int rt2x00queue_clear_beacon(struct rt2x00_dev *rt2x00dev,
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struct ieee80211_vif *vif);
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/**
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* rt2x00queue_index_inc - Index incrementation function
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* @entry: Queue entry (&struct queue_entry) to perform the action on.
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* @index: Index type (&enum queue_index) to perform the action on.
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*
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* This function will increase the requested index on the entry's queue,
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* it will grab the appropriate locks and handle queue overflow events by
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* resetting the index to the start of the queue.
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*/
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void rt2x00queue_index_inc(struct queue_entry *entry, enum queue_index index);
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/**
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* rt2x00queue_init_queues - Initialize all data queues
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*
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* This function will loop through all available queues to clear all
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* index numbers and set the queue entry to the correct initialization
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* state.
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*/
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void rt2x00queue_init_queues(struct rt2x00_dev *rt2x00dev);
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int rt2x00queue_initialize(struct rt2x00_dev *rt2x00dev);
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void rt2x00queue_uninitialize(struct rt2x00_dev *rt2x00dev);
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int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev);
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void rt2x00queue_free(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_update_stats - Update link statistics from RX frame
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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* @skb: Received frame
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* @rxdesc: Received frame descriptor
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*
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* Update link statistics based on the information from the
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* received frame descriptor.
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*/
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void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev,
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struct sk_buff *skb,
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struct rxdone_entry_desc *rxdesc);
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/**
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* rt2x00link_start_tuner - Start periodic link tuner work
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*
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* This start the link tuner periodic work, this work will
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* be executed periodically until &rt2x00link_stop_tuner has
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* been called.
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*/
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void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_stop_tuner - Stop periodic link tuner work
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*
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* After this function completed the link tuner will not
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* be running until &rt2x00link_start_tuner is called.
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*/
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void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_reset_tuner - Reset periodic link tuner work
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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* @antenna: Should the antenna tuning also be reset
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*
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* The VGC limit configured in the hardware will be reset to 0
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* which forces the driver to rediscover the correct value for
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* the current association. This is needed when configuration
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* options have changed which could drastically change the
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* SNR level or link quality (i.e. changing the antenna setting).
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*
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* Resetting the link tuner will also cause the periodic work counter
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* to be reset. Any driver which has a fixed limit on the number
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* of rounds the link tuner is supposed to work will accept the
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* tuner actions again if this limit was previously reached.
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*
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* If @antenna is set to true a the software antenna diversity
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* tuning will also be reset.
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*/
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void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna);
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/**
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* rt2x00link_start_watchdog - Start periodic watchdog monitoring
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*
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* This start the watchdog periodic work, this work will
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*be executed periodically until &rt2x00link_stop_watchdog has
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* been called.
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*/
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void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_stop_watchdog - Stop periodic watchdog monitoring
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*
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* After this function completed the watchdog monitoring will not
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* be running until &rt2x00link_start_watchdog is called.
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*/
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void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_start_agc - Start periodic gain calibration
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*/
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void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_stop_agc - Stop periodic gain calibration
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*/
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void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev);
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/**
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* rt2x00link_register - Initialize link tuning & watchdog functionality
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* @rt2x00dev: Pointer to &struct rt2x00_dev.
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*
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* Initialize work structure and all link tuning and watchdog related
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* parameters. This will not start the periodic work itself.
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*/
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void rt2x00link_register(struct rt2x00_dev *rt2x00dev);
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/*
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* Firmware handlers.
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*/
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#ifdef CONFIG_RT2X00_LIB_FIRMWARE
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int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev);
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void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev);
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#else
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static inline int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev)
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{
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return 0;
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}
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static inline void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
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{
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}
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#endif /* CONFIG_RT2X00_LIB_FIRMWARE */
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/*
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* Debugfs handlers.
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*/
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#ifdef CONFIG_RT2X00_LIB_DEBUGFS
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void rt2x00debug_register(struct rt2x00_dev *rt2x00dev);
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void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev);
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void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
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struct rxdone_entry_desc *rxdesc);
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#else
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static inline void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
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{
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}
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static inline void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
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{
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}
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static inline void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
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struct rxdone_entry_desc *rxdesc)
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{
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}
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#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
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/*
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* Crypto handlers.
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*/
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#ifdef CONFIG_RT2X00_LIB_CRYPTO
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enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key);
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void rt2x00crypto_create_tx_descriptor(struct rt2x00_dev *rt2x00dev,
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struct sk_buff *skb,
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struct txentry_desc *txdesc);
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unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev,
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struct sk_buff *skb);
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void rt2x00crypto_tx_copy_iv(struct sk_buff *skb,
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struct txentry_desc *txdesc);
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void rt2x00crypto_tx_remove_iv(struct sk_buff *skb,
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struct txentry_desc *txdesc);
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void rt2x00crypto_tx_insert_iv(struct sk_buff *skb, unsigned int header_length);
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void rt2x00crypto_rx_insert_iv(struct sk_buff *skb,
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unsigned int header_length,
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struct rxdone_entry_desc *rxdesc);
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#else
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static inline enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key)
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{
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return CIPHER_NONE;
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}
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static inline void rt2x00crypto_create_tx_descriptor(struct rt2x00_dev *rt2x00dev,
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struct sk_buff *skb,
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struct txentry_desc *txdesc)
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{
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}
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static inline unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev,
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struct sk_buff *skb)
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{
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return 0;
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}
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static inline void rt2x00crypto_tx_copy_iv(struct sk_buff *skb,
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struct txentry_desc *txdesc)
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{
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}
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static inline void rt2x00crypto_tx_remove_iv(struct sk_buff *skb,
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struct txentry_desc *txdesc)
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{
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}
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static inline void rt2x00crypto_tx_insert_iv(struct sk_buff *skb,
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unsigned int header_length)
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{
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}
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static inline void rt2x00crypto_rx_insert_iv(struct sk_buff *skb,
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unsigned int header_length,
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struct rxdone_entry_desc *rxdesc)
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{
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}
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#endif /* CONFIG_RT2X00_LIB_CRYPTO */
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/*
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* RFkill handlers.
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*/
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static inline void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
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{
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if (test_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags))
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wiphy_rfkill_start_polling(rt2x00dev->hw->wiphy);
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}
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static inline void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev)
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{
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if (test_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags))
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wiphy_rfkill_stop_polling(rt2x00dev->hw->wiphy);
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}
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/*
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* LED handlers
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*/
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#ifdef CONFIG_RT2X00_LIB_LEDS
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void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, int rssi);
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void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev, bool enabled);
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void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev, bool enabled);
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void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev, bool enabled);
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void rt2x00leds_register(struct rt2x00_dev *rt2x00dev);
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void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev);
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void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev);
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void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev);
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#else
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static inline void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev,
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int rssi)
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{
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}
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static inline void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev,
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bool enabled)
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{
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}
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static inline void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev,
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bool enabled)
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{
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}
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static inline void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev,
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bool enabled)
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{
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}
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static inline void rt2x00leds_register(struct rt2x00_dev *rt2x00dev)
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{
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}
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static inline void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev)
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{
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}
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static inline void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev)
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{
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}
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static inline void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev)
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{
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}
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#endif /* CONFIG_RT2X00_LIB_LEDS */
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#endif /* RT2X00LIB_H */
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