if_tun.h 2.1 KB

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  1. /*
  2. * Universal TUN/TAP device driver.
  3. * Copyright (C) 1999-2000 Maxim Krasnyansky <max_mk@yahoo.com>
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation; either version 2 of the License, or
  8. * (at your option) any later version.
  9. *
  10. * This program is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. * GNU General Public License for more details.
  14. *
  15. * $Id: if_tun.h,v 1.1.1.1 2007/06/12 07:27:16 eyryu Exp $
  16. */
  17. #ifndef __IF_TUN_H
  18. #define __IF_TUN_H
  19. /* Uncomment to enable debugging */
  20. /* #define TUN_DEBUG 1 */
  21. #ifdef __KERNEL__
  22. #ifdef TUN_DEBUG
  23. #define DBG if(tun->debug)printk
  24. #define DBG1 if(debug==2)printk
  25. #else
  26. #define DBG( a... )
  27. #define DBG1( a... )
  28. #endif
  29. struct tun_struct {
  30. struct list_head list;
  31. unsigned long flags;
  32. int attached;
  33. uid_t owner;
  34. wait_queue_head_t read_wait;
  35. struct sk_buff_head readq;
  36. struct net_device *dev;
  37. struct net_device_stats stats;
  38. struct fasync_struct *fasync;
  39. unsigned long if_flags;
  40. u8 dev_addr[ETH_ALEN];
  41. u32 chr_filter[2];
  42. u32 net_filter[2];
  43. #ifdef TUN_DEBUG
  44. int debug;
  45. #endif
  46. };
  47. #endif /* __KERNEL__ */
  48. /* Read queue size */
  49. #define TUN_READQ_SIZE 500
  50. /* TUN device flags */
  51. #define TUN_TUN_DEV 0x0001
  52. #define TUN_TAP_DEV 0x0002
  53. #define TUN_TYPE_MASK 0x000f
  54. #define TUN_FASYNC 0x0010
  55. #define TUN_NOCHECKSUM 0x0020
  56. #define TUN_NO_PI 0x0040
  57. #define TUN_ONE_QUEUE 0x0080
  58. #define TUN_PERSIST 0x0100
  59. /* Ioctl defines */
  60. #define TUNSETNOCSUM _IOW('T', 200, int)
  61. #define TUNSETDEBUG _IOW('T', 201, int)
  62. #define TUNSETIFF _IOW('T', 202, int)
  63. #define TUNSETPERSIST _IOW('T', 203, int)
  64. #define TUNSETOWNER _IOW('T', 204, int)
  65. #define TUNSETLINK _IOW('T', 205, int)
  66. /* TUNSETIFF ifr flags */
  67. #define IFF_TUN 0x0001
  68. #define IFF_TAP 0x0002
  69. #define IFF_NO_PI 0x1000
  70. #define IFF_ONE_QUEUE 0x2000
  71. struct tun_pi {
  72. unsigned short flags;
  73. unsigned short proto;
  74. };
  75. #define TUN_PKT_STRIP 0x0001
  76. #endif /* __IF_TUN_H */