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[I/OAT]: Utility functions for offloading sk_buff to iovec copies

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Provides for pinning user space pages in memory, copying to iovecs,
and copying from sk_buffs including fragmented and chained sk_buffs.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Chris Leech
2006-05-23 17:50:37 -07:00
committed by David S. Miller
parent db21733488
commit de5506e155
6 changed files with 459 additions and 1 deletions
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6
include/net/netdma.h
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@@ -23,6 +23,7 @@
#include <linux/config.h>
#ifdef CONFIG_NET_DMA
#include <linux/dmaengine.h>
#include <linux/skbuff.h>
static inline struct dma_chan *get_softnet_dma(void)
{
@@ -34,5 +35,10 @@ static inline struct dma_chan *get_softnet_dma(void)
rcu_read_unlock();
return chan;
}
int dma_skb_copy_datagram_iovec(struct dma_chan* chan,
const struct sk_buff *skb, int offset, struct iovec *to,
size_t len, struct dma_pinned_list *pinned_list);
#endif /* CONFIG_NET_DMA */
#endif /* NETDMA_H */