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route.h

route.h 2.2 KB
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  1. /*
    2. 

  2.  * INET		An implementation of the TCP/IP protocol suite for the LINUX
    3. 

  3.  *		operating system.  INET is implemented using the  BSD Socket
    4. 

  4.  *		interface as the means of communication with the user level.
    5. 

  5.  *
    6. 

  6.  *		Global definitions for the IP router interface.
    7. 

  7.  *
    8. 

  8.  * Version:	@(#)route.h	1.0.3	05/27/93
    9. 

  9.  *
    10. 

  10.  * Authors:	Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
    11. 

  11.  *		for the purposes of compatibility only.
    12. 

  12.  *
    13. 

  13.  *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
    14. 

  14.  *
    15. 

  15.  * Changes:
    16. 

  16.  *              Mike McLagan    :       Routing by source
    17. 

  17.  *
    18. 

  18.  *		This program is free software; you can redistribute it and/or
    19. 

  19.  *		modify it under the terms of the GNU General Public License
    20. 

  20.  *		as published by the Free Software Foundation; either version
    21. 

  21.  *		2 of the License, or (at your option) any later version.
    22. 

  22.  */
    23. 

  23. #ifndef _LINUX_ROUTE_H
    24. 

  24. #define _LINUX_ROUTE_H
    25. 

  25. 

  26. #include <linux/if.h>
    27. 

  27. 

  28. 

  29. /* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
    30. 

  30. struct rtentry {
    31. 

  31. 	unsigned long	rt_pad1;
    32. 

  32. 	struct sockaddr	rt_dst;		/* target address		*/
    33. 

  33. 	struct sockaddr	rt_gateway;	/* gateway addr (RTF_GATEWAY)	*/
    34. 

  34. 	struct sockaddr	rt_genmask;	/* target network mask (IP)	*/
    35. 

  35. 	unsigned short	rt_flags;
    36. 

  36. 	short		rt_pad2;
    37. 

  37. 	unsigned long	rt_pad3;
    38. 

  38. 	void		*rt_pad4;
    39. 

  39. 	short		rt_metric;	/* +1 for binary compatibility!	*/
    40. 

  40. 	char *rt_dev;	/* forcing the device at add	*/
    41. 

  41. 	unsigned long	rt_mtu;		/* per route MTU/Window 	*/
    42. 

  42. #define rt_mss	rt_mtu			/* Compatibility :-(            */
    43. 

  43. 	unsigned long	rt_window;	/* Window clamping 		*/
    44. 

  44. 	unsigned short	rt_irtt;	/* Initial RTT			*/
    45. 

  45. };
    46. 

  46. 

  47. 

  48. #define	RTF_UP		0x0001		/* route usable		  	*/
    49. 

  49. #define	RTF_GATEWAY	0x0002		/* destination is a gateway	*/
    50. 

  50. #define	RTF_HOST	0x0004		/* host entry (net otherwise)	*/
    51. 

  51. #define RTF_REINSTATE	0x0008		/* reinstate route after tmout	*/
    52. 

  52. #define	RTF_DYNAMIC	0x0010		/* created dyn. (by redirect)	*/
    53. 

  53. #define	RTF_MODIFIED	0x0020		/* modified dyn. (by redirect)	*/
    54. 

  54. #define RTF_MTU		0x0040		/* specific MTU for this route	*/
    55. 

  55. #define RTF_MSS		RTF_MTU		/* Compatibility :-(		*/
    56. 

  56. #define RTF_WINDOW	0x0080		/* per route window clamping	*/
    57. 

  57. #define RTF_IRTT	0x0100		/* Initial round trip time	*/
    58. 

  58. #define RTF_REJECT	0x0200		/* Reject route			*/
    59. 

  59. 

  60. /*
    61. 

  61.  *	<linux/ipv6_route.h> uses RTF values >= 64k
    62. 

  62.  */
    63. 

  63. 

  64. 

  65. 

  66. #endif	/* _LINUX_ROUTE_H */
    67. 

  67.