babeld/babeld.h

   1 /*
   2 Copyright (c) 2007, 2008 by Juliusz Chroboczek
   3 Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
   4
   5 Permission is hereby granted, free of charge, to any person obtaining a copy
   6 of this software and associated documentation files (the "Software"), to deal
   7 in the Software without restriction, including without limitation the rights
   8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 copies of the Software, and to permit persons to whom the Software is
  10 furnished to do so, subject to the following conditions:
  11
  12 The above copyright notice and this permission notice shall be included in
  13 all copies or substantial portions of the Software.
  14
  15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21 THE SOFTWARE.
  22 */
  23
  24 #ifndef BABEL_BABELD_H
  25 #define BABEL_BABELD_H
  26
  27 #include <zebra.h>
  28 #include "vty.h"
  29
  30 #define INFINITY ((unsigned short)(~0))
  31
  32 #ifndef RTPROT_BABEL
  33 #define RTPROT_BABEL 42
  34 #endif
  35
  36 #define RTPROT_BABEL_LOCAL -2
  37
  38 #undef MAX
  39 #undef MIN
  40
  41 #define MAX(x,y) ((x)<=(y)?(y):(x))
  42 #define MIN(x,y) ((x)<=(y)?(x):(y))
  43
  44 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
  45 /* nothing */
  46 #elif defined(__GNUC__)
  47 #define inline __inline
  48 #if  (__GNUC__ >= 3)
  49 #define restrict __restrict
  50 #else
  51 #define restrict /**/
  52 #endif
  53 #else
  54 #define inline /**/
  55 #define restrict /**/
  56 #endif
  57
  58 #if defined(__GNUC__) && (__GNUC__ >= 3)
  59 #define ATTRIBUTE(x) __attribute__ (x)
  60 #define LIKELY(_x) __builtin_expect(!!(_x), 1)
  61 #define UNLIKELY(_x) __builtin_expect(!!(_x), 0)
  62 #else
  63 #define ATTRIBUTE(x) /**/
  64 #define LIKELY(_x) !!(_x)
  65 #define UNLIKELY(_x) !!(_x)
  66 #endif
  67
  68 #if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)
  69 #define COLD __attribute__ ((cold))
  70 #else
  71 #define COLD /**/
  72 #endif
  73
  74 #ifndef IF_NAMESIZE
  75 #include <sys/socket.h>
  76 #include <net/if.h>
  77 #endif
  78
  79 #ifdef HAVE_VALGRIND
  80 #include <valgrind/memcheck.h>
  81 #else
  82 #ifndef VALGRIND_MAKE_MEM_UNDEFINED
  83 #define VALGRIND_MAKE_MEM_UNDEFINED(a, b) do {} while(0)
  84 #endif
  85 #ifndef VALGRIND_CHECK_MEM_IS_DEFINED
  86 #define VALGRIND_CHECK_MEM_IS_DEFINED(a, b) do {} while(0)
  87 #endif
  88 #endif
  89
  90
  91 #define BABEL_VTY_PORT 2609
  92 #define BABEL_DEFAULT_CONFIG "babeld.conf"
  93
  94 /* Values in milliseconds */
  95 #define BABEL_DEFAULT_HELLO_INTERVAL 4000
  96 #define BABEL_DEFAULT_UPDATE_INTERVAL 16000
  97 #define BABEL_DEFAULT_RESEND_DELAY 2000
  98
  99 /* In units of seconds */
 100 #define BABEL_DEFAULT_SMOOTHING_HALF_LIFE 4
 101
 102 /* In units of 1/256. */
 103 #define BABEL_DEFAULT_DIVERSITY_FACTOR 256
 104
 105 #define BABEL_DEFAULT_RXCOST_WIRED 96
 106 #define BABEL_DEFAULT_RXCOST_WIRELESS 256
 107
 108 /* Babel structure. */
 109 struct babel
 110 {
 111     /* Babel threads. */
 112     struct thread *t_read;    /* on Babel protocol's socket */
 113     struct thread *t_update;  /* timers */
 114     /* distribute_ctx */
 115     struct distribute_ctx *distribute_ctx;
 116 };
 117
 118 extern struct zebra_privs_t babeld_privs;
 119
 120 extern void babeld_quagga_init(void);
 121 extern int input_filter(const unsigned char *id,
 122                         const unsigned char *prefix, unsigned short plen,
 123                         const unsigned char *neigh, unsigned int ifindex);
 124 extern int output_filter(const unsigned char *id, const unsigned char *prefix,
 125                          unsigned short plen, unsigned int ifindex);
 126 extern int redistribute_filter(const unsigned char *prefix, unsigned short plen,
 127                                unsigned int ifindex, int proto);
 128 extern int resize_receive_buffer(int size);
 129 extern void schedule_neighbours_check(int msecs, int override);
 130 extern struct babel *babel_lookup(void);
 131
 132 #endif /* BABEL_BABELD_H */