[PATCH 3/4] tun: define feature bit for USO support

[Yuri Benditovich]

User mode software can probe this bit to check whether the
USO feature is supported by TUN/TAP device.

Signed-off-by: Yuri Benditovich <yuri.benditovich@xxxxxxxxxx>
---
 include/uapi/linux/if_tun.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
index 454ae31b93c7..24f246920dd5 100644
--- a/include/uapi/linux/if_tun.h
+++ b/include/uapi/linux/if_tun.h
@@ -88,6 +88,7 @@
 #define TUN_F_TSO6	0x04	/* I can handle TSO for IPv6 packets */
 #define TUN_F_TSO_ECN	0x08	/* I can handle TSO with ECN bits. */
 #define TUN_F_UFO	0x10	/* I can handle UFO packets */
+#define TUN_F_USO	0x20	/* I can handle USO packets */
 
 /* Protocol info prepended to the packets (when IFF_NO_PI is not set) */
 #define TUN_PKT_STRIP	0x0001
-- 
2.26.3