On Wed, Nov 19, 2014 at 10:47:14AM -0600, Dan Williams wrote:
> On Wed, 2014-11-19 at 18:18 +0200, Michael S. Tsirkin wrote:
> > TUN_ flags are internal and never exposed
> > to userspace. Any application using it is almost
> > certainly buggy.
>
> Except for TUN_TUN_DEV and TUN_TAP_DEV and TUN_TYPE_MASK... which we're
> using (for some reason) in NetworkManager, though I'll happily convert
> those to IFF_* instead. It might be worth #defining those to their
> IFF_* equivalents since their usage is not technically broken.
>
> Dan
Hmm you are right, they happen to have the same value.
I'll send v2 leaving these in place.
> > Move them out to tun.c, we'll remove them in follow-up patches.
> > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> > ---
> > include/uapi/linux/if_tun.h | 14 --------------
> > drivers/net/tun.c | 14 ++++++++++++++
> > 2 files changed, 14 insertions(+), 14 deletions(-)
> >
> > diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h
> > index e9502dd..b82c276 100644
> > --- a/include/uapi/linux/if_tun.h
> > +++ b/include/uapi/linux/if_tun.h
> > @@ -23,20 +23,6 @@
> > /* Read queue size */
> > #define TUN_READQ_SIZE 500
> >
> > -/* TUN device flags */
> > -#define TUN_TUN_DEV 0x0001
> > -#define TUN_TAP_DEV 0x0002
> > -#define TUN_TYPE_MASK 0x000f
> > -
> > -#define TUN_FASYNC 0x0010
> > -#define TUN_NOCHECKSUM 0x0020
> > -#define TUN_NO_PI 0x0040
> > -/* This flag has no real effect */
> > -#define TUN_ONE_QUEUE 0x0080
> > -#define TUN_PERSIST 0x0100
> > -#define TUN_VNET_HDR 0x0200
> > -#define TUN_TAP_MQ 0x0400
> > -
> > /* Ioctl defines */
> > #define TUNSETNOCSUM _IOW('T', 200, int)
> > #define TUNSETDEBUG _IOW('T', 201, int)
> > diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> > index 2e18ddd..81735f5 100644
> > --- a/drivers/net/tun.c
> > +++ b/drivers/net/tun.c
> > @@ -103,6 +103,20 @@ do { \
> > } while (0)
> > #endif
> >
> > +/* TUN device flags */
> > +#define TUN_TUN_DEV 0x0001
> > +#define TUN_TAP_DEV 0x0002
> > +#define TUN_TYPE_MASK 0x000f
> > +
> > +#define TUN_FASYNC 0x0010
> > +#define TUN_NOCHECKSUM 0x0020
> > +#define TUN_NO_PI 0x0040
> > +/* This flag has no real effect */
> > +#define TUN_ONE_QUEUE 0x0080
> > +#define TUN_PERSIST 0x0100
> > +#define TUN_VNET_HDR 0x0200
> > +#define TUN_TAP_MQ 0x0400
> > +
> > #define GOODCOPY_LEN 128
> >
> > #define FLT_EXACT_COUNT 8
>
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