schedule_timeout(9) [centos man page]

SCHEDULE_TIMEOUT(9)						   Driver Basics					       SCHEDULE_TIMEOUT(9)

NAME

       schedule_timeout - sleep until timeout

SYNOPSIS

       signed long __sched schedule_timeout(signed long timeout);

ARGUMENTS

       timeout
	   timeout value in jiffies

DESCRIPTION

       Make the current task sleep until timeout jiffies have elapsed. The routine will return immediately unless the current task state has been
       set (see set_current_state).

       You can set the task state as follows -

       TASK_UNINTERRUPTIBLE - at least timeout jiffies are guaranteed to pass before the routine returns. The routine will return 0

       TASK_INTERRUPTIBLE - the routine may return early if a signal is delivered to the current task. In this case the remaining time in jiffies
       will be returned, or 0 if the timer expired in time

       The current task state is guaranteed to be TASK_RUNNING when this routine returns.

       Specifying a timeout value of MAX_SCHEDULE_TIMEOUT will schedule the CPU away without a bound on the timeout. In this case the return value
       will be MAX_SCHEDULE_TIMEOUT.

       In all cases the return value is guaranteed to be non-negative.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						       SCHEDULE_TIMEOUT(9)

STRUCT 
TID_AMPDU_RX(9)						     Internals						    STRUCT TID_AMPDU_RX(9)

NAME

       struct_tid_ampdu_rx - TID aggregation information (Rx).

SYNOPSIS

       struct tid_ampdu_rx {
	 struct rcu_head rcu_head;
	 spinlock_t reorder_lock;
	 struct sk_buff ** reorder_buf;
	 unsigned long * reorder_time;
	 struct timer_list session_timer;
	 struct timer_list reorder_timer;
	 unsigned long last_rx;
	 u16 head_seq_num;
	 u16 stored_mpdu_num;
	 u16 ssn;
	 u16 buf_size;
	 u16 timeout;
	 u8 dialog_token;
       };

MEMBERS

       rcu_head
	   RCU head used for freeing this struct

       reorder_lock
	   serializes access to reorder buffer, see below.

       reorder_buf
	   buffer to reorder incoming aggregated MPDUs

       reorder_time
	   jiffies when skb was added

       session_timer
	   check if peer keeps Tx-ing on the TID (by timeout value)

       reorder_timer
	   releases expired frames from the reorder buffer.

       last_rx
	   jiffies of last rx activity

       head_seq_num
	   head sequence number in reordering buffer.

       stored_mpdu_num
	   number of MPDUs in reordering buffer

       ssn
	   Starting Sequence Number expected to be aggregated.

       buf_size
	   buffer size for incoming A-MPDUs

       timeout
	   reset timer value (in TUs).

       dialog_token
	   dialog token for aggregation session

DESCRIPTION

       This structure's lifetime is managed by RCU, assignments to the array holding it must hold the aggregation mutex.

       The reorder_lock is used to protect the members of this struct, except for timeout, buf_size and dialog_token, which are constant across
       the lifetime of the struct (the dialog token being used only for debugging).

AUTHOR

       Johannes Berg <johannes@sipsolutions.net>
	   Author.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						    STRUCT TID_AMPDU_RX(9)