path: root/include/uapi
diff options
authorMichael S. Tsirkin <mst@redhat.com>2014-12-16 15:05:01 +0200
committerDavid S. Miller <davem@davemloft.net>2014-12-16 11:19:41 -0500
commit5eea84f478537de769330079dc068414f9d417f4 (patch)
treee41a7f8c33e87894ce9cd99a46388766d8db331e /include/uapi
parent39ec7de7092ba9789f211d112a66bd19d4cb5d36 (diff)
ifreq flags field is only 16 bit wide, so setting IFF_VNET_LE there has no effect: doesn't fit in two bytes. The tests passed apparently because they have an even number of bugs, all cancelling out. Luckily we didn't release a kernel with this flag, so it's not too late to fix this. Add TUNSETVNETLE/TUNGETVNETLE to really achieve the purpose of IFF_VNET_LE. This has an added benefit that if we ever want a BE flag, we won't have to deal with weird configurations like setting both LE and BE at the same time. IFF_VNET_LE will be dropped in a follow-up patch. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
index 18b2403982f9..274630caa276 100644
--- a/include/uapi/linux/if_tun.h
+++ b/include/uapi/linux/if_tun.h
@@ -48,6 +48,8 @@
#define TUNSETQUEUE _IOW('T', 217, int)
#define TUNSETIFINDEX _IOW('T', 218, unsigned int)
#define TUNGETFILTER _IOR('T', 219, struct sock_fprog)
+#define TUNSETVNETLE _IOW('T', 220, int)
+#define TUNGETVNETLE _IOR('T', 221, int)
/* TUNSETIFF ifr flags */
#define IFF_TUN 0x0001

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