sock.h: Add a new sock zero-copy flag

Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/sock.h b/include/net/sock.h
index ae56da6ec958536c4c489229bde8e8c37fa893ae..396f735e0cd5994fc72abafbaa08420967c57def 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -563,6 +563,7 @@ enum sock_flags {
        SOCK_TIMESTAMPING_SYS_HARDWARE, /* %SOF_TIMESTAMPING_SYS_HARDWARE */
        SOCK_FASYNC, /* fasync() active */
        SOCK_RXQ_OVFL,
+       SOCK_ZEROCOPY, /* buffers from userspace */
 };
 
 static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)