mroute.h 4.1 KB

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  1. #ifndef __LINUX_MROUTE_H
  2. #define __LINUX_MROUTE_H
  3. #include <linux/sockios.h>
  4. #include <linux/types.h>
  5. /*
  6. * Based on the MROUTING 3.5 defines primarily to keep
  7. * source compatibility with BSD.
  8. *
  9. * See the mrouted code for the original history.
  10. *
  11. * Protocol Independent Multicast (PIM) data structures included
  12. * Carlos Picoto (cap@di.fc.ul.pt)
  13. *
  14. */
  15. #define MRT_BASE 200
  16. #define MRT_INIT (MRT_BASE) /* Activate the kernel mroute code */
  17. #define MRT_DONE (MRT_BASE+1) /* Shutdown the kernel mroute */
  18. #define MRT_ADD_VIF (MRT_BASE+2) /* Add a virtual interface */
  19. #define MRT_DEL_VIF (MRT_BASE+3) /* Delete a virtual interface */
  20. #define MRT_ADD_MFC (MRT_BASE+4) /* Add a multicast forwarding entry */
  21. #define MRT_DEL_MFC (MRT_BASE+5) /* Delete a multicast forwarding entry */
  22. #define MRT_VERSION (MRT_BASE+6) /* Get the kernel multicast version */
  23. #define MRT_ASSERT (MRT_BASE+7) /* Activate PIM assert mode */
  24. #define MRT_PIM (MRT_BASE+8) /* enable PIM code */
  25. #define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID */
  26. #define MRT_ADD_MFC_PROXY (MRT_BASE+10) /* Add a (*,*|G) mfc entry */
  27. #define MRT_DEL_MFC_PROXY (MRT_BASE+11) /* Del a (*,*|G) mfc entry */
  28. #define MRT_MAX (MRT_BASE+11)
  29. #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates */
  30. #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1)
  31. #define SIOCGETRPF (SIOCPROTOPRIVATE+2)
  32. #define MAXVIFS 32
  33. typedef unsigned long vifbitmap_t; /* User mode code depends on this lot */
  34. typedef unsigned short vifi_t;
  35. #define ALL_VIFS ((vifi_t)(-1))
  36. /*
  37. * Same idea as select
  38. */
  39. #define VIFM_SET(n,m) ((m)|=(1<<(n)))
  40. #define VIFM_CLR(n,m) ((m)&=~(1<<(n)))
  41. #define VIFM_ISSET(n,m) ((m)&(1<<(n)))
  42. #define VIFM_CLRALL(m) ((m)=0)
  43. #define VIFM_COPY(mfrom,mto) ((mto)=(mfrom))
  44. #define VIFM_SAME(m1,m2) ((m1)==(m2))
  45. /*
  46. * Passed by mrouted for an MRT_ADD_VIF - again we use the
  47. * mrouted 3.6 structures for compatibility
  48. */
  49. struct vifctl {
  50. vifi_t vifc_vifi; /* Index of VIF */
  51. unsigned char vifc_flags; /* VIFF_ flags */
  52. unsigned char vifc_threshold; /* ttl limit */
  53. unsigned int vifc_rate_limit; /* Rate limiter values (NI) */
  54. union {
  55. struct in_addr vifc_lcl_addr; /* Local interface address */
  56. int vifc_lcl_ifindex; /* Local interface index */
  57. };
  58. struct in_addr vifc_rmt_addr; /* IPIP tunnel addr */
  59. };
  60. #define VIFF_TUNNEL 0x1 /* IPIP tunnel */
  61. #define VIFF_SRCRT 0x2 /* NI */
  62. #define VIFF_REGISTER 0x4 /* register vif */
  63. #define VIFF_USE_IFINDEX 0x8 /* use vifc_lcl_ifindex instead of
  64. vifc_lcl_addr to find an interface */
  65. /*
  66. * Cache manipulation structures for mrouted and PIMd
  67. */
  68. struct mfcctl {
  69. struct in_addr mfcc_origin; /* Origin of mcast */
  70. struct in_addr mfcc_mcastgrp; /* Group in question */
  71. vifi_t mfcc_parent; /* Where it arrived */
  72. unsigned char mfcc_ttls[MAXVIFS]; /* Where it is going */
  73. unsigned int mfcc_pkt_cnt; /* pkt count for src-grp */
  74. unsigned int mfcc_byte_cnt;
  75. unsigned int mfcc_wrong_if;
  76. int mfcc_expire;
  77. };
  78. /*
  79. * Group count retrieval for mrouted
  80. */
  81. struct sioc_sg_req {
  82. struct in_addr src;
  83. struct in_addr grp;
  84. unsigned long pktcnt;
  85. unsigned long bytecnt;
  86. unsigned long wrong_if;
  87. };
  88. /*
  89. * To get vif packet counts
  90. */
  91. struct sioc_vif_req {
  92. vifi_t vifi; /* Which iface */
  93. unsigned long icount; /* In packets */
  94. unsigned long ocount; /* Out packets */
  95. unsigned long ibytes; /* In bytes */
  96. unsigned long obytes; /* Out bytes */
  97. };
  98. /*
  99. * This is the format the mroute daemon expects to see IGMP control
  100. * data. Magically happens to be like an IP packet as per the original
  101. */
  102. struct igmpmsg {
  103. __u32 unused1,unused2;
  104. unsigned char im_msgtype; /* What is this */
  105. unsigned char im_mbz; /* Must be zero */
  106. unsigned char im_vif; /* Interface (this ought to be a vifi_t!) */
  107. unsigned char unused3;
  108. struct in_addr im_src,im_dst;
  109. };
  110. /*
  111. * That's all usermode folks
  112. */
  113. #define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */
  114. /*
  115. * Pseudo messages used by mrouted
  116. */
  117. #define IGMPMSG_NOCACHE 1 /* Kern cache fill request to mrouted */
  118. #define IGMPMSG_WRONGVIF 2 /* For PIM assert processing (unused) */
  119. #define IGMPMSG_WHOLEPKT 3 /* For PIM Register processing */
  120. #endif /* __LINUX_MROUTE_H */