[I/OAT]: Structure changes for TCP recv offload to I/OAT

Adds an async_wait_queue and some additional fields to tcp_sock, and a
dma_cookie_t to sk_buff.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f8f234708b98..23bad3bf3c9d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -29,6 +29,7 @@
 #include <linux/net.h>
 #include <linux/textsearch.h>
 #include <net/checksum.h>
+#include <linux/dmaengine.h>
 
 #define HAVE_ALLOC_SKB          /* For the drivers to know */
 #define HAVE_ALIGNABLE_SKB      /* Ditto 8)                */
@@ -285,6 +286,9 @@ struct sk_buff {
         __u16                   tc_verd;        /* traffic control verdict */
 #endif
 #endif
+#ifdef CONFIG_NET_DMA
+        dma_cookie_t            dma_cookie;
+#endif
 
 
         /* These elements must be at the end, see alloc_skb() for details.  */
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 542d39596bd8..c90daa5da6c3 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -18,6 +18,7 @@
 #define _LINUX_TCP_H
 
 #include <linux/types.h>
+#include <linux/dmaengine.h>
 #include <asm/byteorder.h>
 
 struct tcphdr {
@@ -233,6 +234,13 @@ struct tcp_sock {
                 struct iovec            *iov;
                 int                     memory;
                 int                     len;
+#ifdef CONFIG_NET_DMA
+                /* members for async copy */
+                struct dma_chan         *dma_chan;
+                int                     wakeup;
+                struct dma_pinned_list  *pinned_list;
+                dma_cookie_t            dma_cookie;
+#endif
         } ucopy;
 
         __u32   snd_wl1;        /* Sequence for window update           */