* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
- * $Id: if_tun.h,v 1.2 2001/06/01 18:39:47 davem Exp $
*/
#ifndef __IF_TUN_H
#define __IF_TUN_H
-/* Uncomment to enable debugging */
-/* #define TUN_DEBUG 1 */
-
-#ifdef __KERNEL__
-
-#ifdef TUN_DEBUG
-#define DBG if(tun->debug)printk
-#define DBG1 if(debug==2)printk
-#else
-#define DBG( a... )
-#define DBG1( a... )
-#endif
-
-struct tun_struct {
- struct list_head list;
- unsigned long flags;
- int attached;
- uid_t owner;
- gid_t group;
-
- wait_queue_head_t read_wait;
- struct sk_buff_head readq;
-
- struct net_device *dev;
-
- struct fasync_struct *fasync;
-
- unsigned long if_flags;
- u8 dev_addr[ETH_ALEN];
- u32 chr_filter[2];
- u32 net_filter[2];
-
-#ifdef TUN_DEBUG
- int debug;
-#endif
-};
-
-#endif /* __KERNEL__ */
+#include <linux/types.h>
/* Read queue size */
#define TUN_READQ_SIZE 500
#define TUN_NO_PI 0x0040
#define TUN_ONE_QUEUE 0x0080
#define TUN_PERSIST 0x0100
+#define TUN_VNET_HDR 0x0200
/* Ioctl defines */
#define TUNSETNOCSUM _IOW('T', 200, int)
#define TUNSETOWNER _IOW('T', 204, int)
#define TUNSETLINK _IOW('T', 205, int)
#define TUNSETGROUP _IOW('T', 206, int)
+#define TUNGETFEATURES _IOR('T', 207, unsigned int)
+#define TUNSETOFFLOAD _IOW('T', 208, unsigned int)
/* TUNSETIFF ifr flags */
#define IFF_TUN 0x0001
#define IFF_TAP 0x0002
#define IFF_NO_PI 0x1000
#define IFF_ONE_QUEUE 0x2000
+#define IFF_VNET_HDR 0x4000
+
+/* Features for GSO (TUNSETOFFLOAD). */
+#define TUN_F_CSUM 0x01 /* You can hand me unchecksummed packets. */
+#define TUN_F_TSO4 0x02 /* I can handle TSO for IPv4 packets */
+#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. */
struct tun_pi {
unsigned short flags;
- unsigned short proto;
+ __be16 proto;
};
#define TUN_PKT_STRIP 0x0001