user_dma.c File Reference

#include <linux/dmaengine.h>
#include <linux/socket.h>
#include <linux/export.h>
#include <net/tcp.h>
#include <net/netdma.h>

Go to the source code of this file.

Macros
#define	NET_DMA_DEFAULT_COPYBREAK   4096

Functions
	EXPORT_SYMBOL (sysctl_tcp_dma_copybreak)
int	dma_skb_copy_datagram_iovec (struct dma_chan *chan, struct sk_buff *skb, int offset, struct iovec *to, size_t len, struct dma_pinned_list *pinned_list)

Variables
int	sysctl_tcp_dma_copybreak = NET_DMA_DEFAULT_COPYBREAK

Macro Definition Documentation

#define NET_DMA_DEFAULT_COPYBREAK   4096

Definition at line 34 of file user_dma.c.

Function Documentation

int dma_skb_copy_datagram_iovec	(	struct dma_chan *	chan,
		struct sk_buff *	skb,
		int	offset,
		struct iovec *	to,
		size_t	len,
		struct dma_pinned_list *	pinned_list
	)

dma_skb_copy_datagram_iovec - Copy a datagram to an iovec. - buffer to copy - offset in the buffer to start copying from - io vector to copy to - amount of data to copy from buffer to iovec - locked iovec buffer data

Note: the iovec is modified during the copy.

Definition at line 49 of file user_dma.c.

EXPORT_SYMBOL

(

sysctl_tcp_dma_copybreak

)

Variable Documentation

int sysctl_tcp_dma_copybreak = NET_DMA_DEFAULT_COPYBREAK

Definition at line 36 of file user_dma.c.