struct_pipe_inode_info(9) [centos man page]

STRUCT 
PIPE_INODE_IN(9) 					     pipes API						   STRUCT PIPE_INODE_IN(9)

NAME

       struct_pipe_inode_info - a linux kernel pipe

SYNOPSIS

       struct pipe_inode_info {
	 struct mutex mutex;
	 wait_queue_head_t wait;
	 unsigned int nrbufs;
	 unsigned int curbuf;
	 unsigned int buffers;
	 unsigned int readers;
	 unsigned int writers;
	 unsigned int files;
	 unsigned int waiting_writers;
	 unsigned int r_counter;
	 unsigned int w_counter;
	 struct page * tmp_page;
	 struct fasync_struct * fasync_readers;
	 struct fasync_struct * fasync_writers;
	 struct pipe_buffer * bufs;
       };

MEMBERS

       mutex
	   mutex protecting the whole thing

       wait
	   reader/writer wait point in case of empty/full pipe

       nrbufs
	   the number of non-empty pipe buffers in this pipe

       curbuf
	   the current pipe buffer entry

       buffers
	   total number of buffers (should be a power of 2)

       readers
	   number of current readers of this pipe

       writers
	   number of current writers of this pipe

       files
	   number of struct file refering this pipe (protected by ->i_lock)

       waiting_writers
	   number of writers blocked waiting for room

       r_counter
	   reader counter

       w_counter
	   writer counter

       tmp_page
	   cached released page

       fasync_readers
	   reader side fasync

       fasync_writers
	   writer side fasync

       bufs
	   the circular array of pipe buffers

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   STRUCT PIPE_INODE_IN(9)

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)