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

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>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/net/netdma.h b/include/net/netdma.h
index cbfe89d7e5d0..19760eb131aa 100644
--- a/include/net/netdma.h
+++ b/include/net/netdma.h
@@ -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 */