tun: Report "persist" flag to userspace

[linux.git] / include / uapi / linux / if_tun.h

diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
index 2835b85fd46d85ae47ec857caa93db1ee5ba79b9..82334f88967e9ba269d3e3fa121f563c33e64eed 100644 (file)
--- a/include/uapi/linux/if_tun.h
+++ b/include/uapi/linux/if_tun.h
@@ -68,6 +68,8 @@
 #define IFF_MULTI_QUEUE 0x0100
 #define IFF_ATTACH_QUEUE 0x0200
 #define IFF_DETACH_QUEUE 0x0400
+/* read-only flag */
+#define IFF_PERSIST    0x0800
 
 /* Features for GSO (TUNSETOFFLOAD). */
 #define TUN_F_CSUM     0x01    /* You can hand me unchecksummed packets. */