babeld/babeld.h

   1 // SPDX-License-Identifier: MIT
   2 /*
   3 Copyright (c) 2007, 2008 by Juliusz Chroboczek
   4 Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
   5 */
   6
   7 #ifndef BABEL_BABELD_H
   8 #define BABEL_BABELD_H
   9
  10 #include <zebra.h>
  11 #include "vty.h"
  12
  13 #define INFINITY ((unsigned short)(~0))
  14
  15 #ifndef RTPROT_BABEL
  16 #define RTPROT_BABEL 42
  17 #endif
  18
  19 #define RTPROT_BABEL_LOCAL -2
  20
  21 #undef MAX
  22 #undef MIN
  23
  24 #define MAX(x,y) ((x)<=(y)?(y):(x))
  25 #define MIN(x,y) ((x)<=(y)?(x):(y))
  26
  27 #if defined(__GNUC__) && (__GNUC__ >= 3)
  28 #define ATTRIBUTE(x) __attribute__ (x)
  29 #define LIKELY(_x) __builtin_expect(!!(_x), 1)
  30 #define UNLIKELY(_x) __builtin_expect(!!(_x), 0)
  31 #else
  32 #define ATTRIBUTE(x) /**/
  33 #define LIKELY(_x) !!(_x)
  34 #define UNLIKELY(_x) !!(_x)
  35 #endif
  36
  37 #if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)
  38 #define COLD __attribute__ ((cold))
  39 #else
  40 #define COLD /**/
  41 #endif
  42
  43 #ifndef IF_NAMESIZE
  44 #include <sys/socket.h>
  45 #include <net/if.h>
  46 #endif
  47
  48 #ifdef HAVE_VALGRIND
  49 #include <valgrind/memcheck.h>
  50 #else
  51 #ifndef VALGRIND_MAKE_MEM_UNDEFINED
  52 #define VALGRIND_MAKE_MEM_UNDEFINED(a, b) do {} while(0)
  53 #endif
  54 #ifndef VALGRIND_CHECK_MEM_IS_DEFINED
  55 #define VALGRIND_CHECK_MEM_IS_DEFINED(a, b) do {} while(0)
  56 #endif
  57 #endif
  58
  59
  60 #define BABEL_VTY_PORT 2609
  61 #define BABEL_DEFAULT_CONFIG "babeld.conf"
  62
  63 /* Values in milliseconds */
  64 #define BABEL_DEFAULT_HELLO_INTERVAL 4000
  65 #define BABEL_DEFAULT_UPDATE_INTERVAL 16000
  66 #define BABEL_DEFAULT_RESEND_DELAY 2000
  67 #define BABEL_DEFAULT_RTT_DECAY 42
  68
  69 /* Values in microseconds */
  70 #define BABEL_DEFAULT_RTT_MIN 10000
  71 #define BABEL_DEFAULT_RTT_MAX 120000
  72
  73 /* In units of seconds */
  74 #define BABEL_DEFAULT_SMOOTHING_HALF_LIFE 4
  75
  76 /* In units of 1/256. */
  77 #define BABEL_DEFAULT_DIVERSITY_FACTOR 256
  78
  79 #define BABEL_DEFAULT_RXCOST_WIRED 96
  80 #define BABEL_DEFAULT_RXCOST_WIRELESS 256
  81 #define BABEL_DEFAULT_MAX_RTT_PENALTY 150
  82
  83 /* Babel structure. */
  84 struct babel
  85 {
  86     /* Babel threads. */
  87     struct event *t_read;   /* on Babel protocol's socket */
  88     struct event *t_update; /* timers */
  89     /* distribute_ctx */
  90     struct distribute_ctx *distribute_ctx;
  91 };
  92
  93 extern struct zebra_privs_t babeld_privs;
  94
  95 extern void babeld_quagga_init(void);
  96 extern int input_filter(const unsigned char *id,
  97                         const unsigned char *prefix, unsigned short plen,
  98                         const unsigned char *neigh, unsigned int ifindex);
  99 extern int output_filter(const unsigned char *id, const unsigned char *prefix,
 100                          unsigned short plen, unsigned int ifindex);
 101 extern int redistribute_filter(const unsigned char *prefix, unsigned short plen,
 102                                unsigned int ifindex, int proto);
 103 extern int resize_receive_buffer(int size);
 104 extern void schedule_neighbours_check(int msecs, int override);
 105 extern struct babel *babel_lookup(void);
 106
 107 #endif /* BABEL_BABELD_H */