Chapter 6. FIFO Buffer
Prev
Next
Chapter 6. FIFO Buffer
Table of Contents
kfifo interface
kfifo interface
DECLARE_KFIFO_PTR
— macro to declare a fifo pointer object
DECLARE_KFIFO
— macro to declare a fifo object
INIT_KFIFO
— Initialize a fifo declared by DECLARE_KFIFO
DEFINE_KFIFO
— macro to define and initialize a fifo
kfifo_initialized
— Check if the fifo is initialized
kfifo_esize
— returns the size of the element managed by the fifo
kfifo_recsize
— returns the size of the record length field
kfifo_size
— returns the size of the fifo in elements
kfifo_reset
— removes the entire fifo content
kfifo_reset_out
— skip fifo content
kfifo_len
— returns the number of used elements in the fifo
kfifo_is_empty
— returns true if the fifo is empty
kfifo_is_full
— returns true if the fifo is full
kfifo_avail
— returns the number of unused elements in the fifo
kfifo_skip
— skip output data
kfifo_peek_len
— gets the size of the next fifo record
kfifo_alloc
— dynamically allocates a new fifo buffer
kfifo_free
— frees the fifo
kfifo_init
— initialize a fifo using a preallocated buffer
kfifo_put
— put data into the fifo
kfifo_get
— get data from the fifo
kfifo_peek
— get data from the fifo without removing
kfifo_in
— put data into the fifo
kfifo_in_spinlocked
— put data into the fifo using a spinlock for locking
kfifo_out
— get data from the fifo
kfifo_out_spinlocked
— get data from the fifo using a spinlock for locking
kfifo_from_user
— puts some data from user space into the fifo
kfifo_to_user
— copies data from the fifo into user space
kfifo_dma_in_prepare
— setup a scatterlist for DMA input
kfifo_dma_in_finish
— finish a DMA IN operation
kfifo_dma_out_prepare
— setup a scatterlist for DMA output
kfifo_dma_out_finish
— finish a DMA OUT operation
kfifo_out_peek
— gets some data from the fifo