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-rw-r--r--drivers/net/tun.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 7b816a032957..970ec4793442 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -67,9 +67,42 @@
#include <asm/system.h>
#include <asm/uaccess.h>
+/* Uncomment to enable debugging */
+/* #define TUN_DEBUG 1 */
+
#ifdef TUN_DEBUG
static int 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
+};
/* Network device part of the driver */