summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/net/tun.c3
-rw-r--r--include/uapi/linux/if_tun.h2
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 89776c59215..b90a73165d3 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1530,6 +1530,9 @@ static int tun_flags(struct tun_struct *tun)
if (tun->flags & TUN_TAP_MQ)
flags |= IFF_MULTI_QUEUE;
+ if (tun->flags & TUN_PERSIST)
+ flags |= IFF_PERSIST;
+
return flags;
}
diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
index 2835b85fd46..82334f88967 100644
--- 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. */