[PATCH V3 1/8] Add a new sock zerocopy flag

[Shirley Ma <mashirle@xxxxxxxxxx>]

This sock zerocopy flag is used to support lower level device DMA 
userspace buffers.

Signed-off-by: Shirley Ma <xma@xxxxxxxxxx>
---

 include/net/sock.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 01810a3..daa0a80 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -562,6 +562,7 @@ enum sock_flags {
 	SOCK_TIMESTAMPING_SYS_HARDWARE, /* %SOF_TIMESTAMPING_SYS_HARDWARE */
 	SOCK_FASYNC, /* fasync() active */
 	SOCK_RXQ_OVFL,
+	SOCK_ZEROCOPY,
 };
 
 static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)


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