WORK_BUSY(9) Driver Basics WORK_BUSY(9)NAME
work_busy - test whether a work is currently pending or running
SYNOPSIS
unsigned int work_busy(struct work_struct * work);
ARGUMENTS
work
the work to be tested
DESCRIPTION
Test whether work is currently pending or running. There is no synchronization around this function and the test result is unreliable and
only useful as advisory hints or for debugging.
RETURNS
OR'd bitmask of WORK_BUSY_* bits.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 WORK_BUSY(9)
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STRUCT STA_AMPDU_MLM(9) Internals STRUCT STA_AMPDU_MLM(9)NAME
struct_sta_ampdu_mlme - STA aggregation information.
SYNOPSIS
struct sta_ampdu_mlme {
struct mutex mtx;
struct tid_ampdu_rx __rcu * tid_rx[IEEE80211_NUM_TIDS];
unsigned long tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
unsigned long tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)];
struct work_struct work;
struct tid_ampdu_tx __rcu * tid_tx[IEEE80211_NUM_TIDS];
struct tid_ampdu_tx * tid_start_tx[IEEE80211_NUM_TIDS];
unsigned long last_addba_req_time[IEEE80211_NUM_TIDS];
u8 addba_req_num[IEEE80211_NUM_TIDS];
u8 dialog_token_allocator;
};
MEMBERS
mtx
mutex to protect all TX data (except non-NULL assignments to tid_tx[idx], which are protected by the sta spinlock)
tid_rx[IEEE80211_NUM_TIDS]
aggregation info for Rx per TID -- RCU protected
tid_rx_timer_expired[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]
bitmap indicating on which TIDs the RX timer expired until the work for it runs
tid_rx_stop_requested[BITS_TO_LONGS(IEEE80211_NUM_TIDS)]
bitmap indicating which BA sessions per TID the driver requested to close until the work for it runs
work
work struct for starting/stopping aggregation
tid_tx[IEEE80211_NUM_TIDS]
aggregation info for Tx per TID
tid_start_tx[IEEE80211_NUM_TIDS]
sessions where start was requested
last_addba_req_time[IEEE80211_NUM_TIDS]
timestamp of the last addBA request.
addba_req_num[IEEE80211_NUM_TIDS]
number of times addBA request has been sent.
dialog_token_allocator
dialog token enumerator for each new session;
AUTHOR
Johannes Berg <johannes@sipsolutions.net>
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 STRUCT STA_AMPDU_MLM(9)
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