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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

xt_hashlimit.h (3256B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. #ifndef _XT_HASHLIMIT_H
  3. #define _XT_HASHLIMIT_H
  5. #include <linux/types.h>
  6. #include <linux/limits.h>
  7. #include <linux/if.h>
  9. /* timings are in milliseconds. */
  10. #define XT_HASHLIMIT_SCALE 10000
  11. #define XT_HASHLIMIT_SCALE_v2 1000000llu
  12. /* 1/10,000 sec period => max of 10,000/sec.  Min rate is then 429490
  13.  * seconds, or one packet every 59 hours.
  14.  */
  16. /* packet length accounting is done in 16-byte steps */
  17. #define XT_HASHLIMIT_BYTE_SHIFT 4
  19. /* details of this structure hidden by the implementation */
  20. struct xt_hashlimit_htable;
  22. enum {
  23. 	XT_HASHLIMIT_HASH_DIP		= 1 << 0,
  24. 	XT_HASHLIMIT_HASH_DPT		= 1 << 1,
  25. 	XT_HASHLIMIT_HASH_SIP		= 1 << 2,
  26. 	XT_HASHLIMIT_HASH_SPT		= 1 << 3,
  27. 	XT_HASHLIMIT_INVERT		= 1 << 4,
  28. 	XT_HASHLIMIT_BYTES		= 1 << 5,
  29. 	XT_HASHLIMIT_RATE_MATCH		= 1 << 6,
  30. };
  32. struct hashlimit_cfg {
  33. 	__u32 mode;	  /* bitmask of XT_HASHLIMIT_HASH_* */
  34. 	__u32 avg;    /* Average secs between packets * scale */
  35. 	__u32 burst;  /* Period multiplier for upper limit. */
  37. 	/* user specified */
  38. 	__u32 size;		/* how many buckets */
  39. 	__u32 max;		/* max number of entries */
  40. 	__u32 gc_interval;	/* gc interval */
  41. 	__u32 expire;	/* when do entries expire? */
  42. };
  44. struct xt_hashlimit_info {
  45. 	char name [IFNAMSIZ];		/* name */
  46. 	struct hashlimit_cfg cfg;
  48. 	/* Used internally by the kernel */
  49. 	struct xt_hashlimit_htable *hinfo;
  50. 	union {
  51. 		void *ptr;
  52. 		struct xt_hashlimit_info *master;
  53. 	} u;
  54. };
  56. struct hashlimit_cfg1 {
  57. 	__u32 mode;	  /* bitmask of XT_HASHLIMIT_HASH_* */
  58. 	__u32 avg;    /* Average secs between packets * scale */
  59. 	__u32 burst;  /* Period multiplier for upper limit. */
  61. 	/* user specified */
  62. 	__u32 size;		/* how many buckets */
  63. 	__u32 max;		/* max number of entries */
  64. 	__u32 gc_interval;	/* gc interval */
  65. 	__u32 expire;	/* when do entries expire? */
  67. 	__u8 srcmask, dstmask;
  68. };
  70. struct hashlimit_cfg2 {
  71. 	__u64 avg;		/* Average secs between packets * scale */
  72. 	__u64 burst;		/* Period multiplier for upper limit. */
  73. 	__u32 mode;		/* bitmask of XT_HASHLIMIT_HASH_* */
  75. 	/* user specified */
  76. 	__u32 size;		/* how many buckets */
  77. 	__u32 max;		/* max number of entries */
  78. 	__u32 gc_interval;	/* gc interval */
  79. 	__u32 expire;		/* when do entries expire? */
  81. 	__u8 srcmask, dstmask;
  82. };
  84. struct hashlimit_cfg3 {
  85. 	__u64 avg;		/* Average secs between packets * scale */
  86. 	__u64 burst;		/* Period multiplier for upper limit. */
  87. 	__u32 mode;		/* bitmask of XT_HASHLIMIT_HASH_* */
  89. 	/* user specified */
  90. 	__u32 size;		/* how many buckets */
  91. 	__u32 max;		/* max number of entries */
  92. 	__u32 gc_interval;	/* gc interval */
  93. 	__u32 expire;		/* when do entries expire? */
  95. 	__u32 interval;
  96. 	__u8 srcmask, dstmask;
  97. };
  99. struct xt_hashlimit_mtinfo1 {
  100. 	char name[IFNAMSIZ];
  101. 	struct hashlimit_cfg1 cfg;
  103. 	/* Used internally by the kernel */
  104. 	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));
  105. };
  107. struct xt_hashlimit_mtinfo2 {
  108. 	char name[NAME_MAX];
  109. 	struct hashlimit_cfg2 cfg;
  111. 	/* Used internally by the kernel */
  112. 	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));
  113. };
  115. struct xt_hashlimit_mtinfo3 {
  116. 	char name[NAME_MAX];
  117. 	struct hashlimit_cfg3 cfg;
  119. 	/* Used internally by the kernel */
  120. 	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));
  121. };
  123. #endif /* _XT_HASHLIMIT_H */