babeld/resend.h

   1 // SPDX-License-Identifier: MIT
   2 /*
   3 Copyright (c) 2007, 2008 by Juliusz Chroboczek
   4 */
   5 #ifndef BABEL_RESEND_H
   6 #define BABEL_RESEND_H
   7
   8 #define REQUEST_TIMEOUT 65000
   9 #define RESEND_MAX 3
  10
  11 #define RESEND_REQUEST 1
  12 #define RESEND_UPDATE 2
  13
  14 struct resend {
  15     unsigned char kind;
  16     unsigned char max;
  17     unsigned short delay;
  18     struct timeval time;
  19     unsigned char prefix[16];
  20     unsigned char plen;
  21     unsigned short seqno;
  22     unsigned char id[8];
  23     struct interface *ifp;
  24     struct resend *next;
  25 };
  26
  27 extern struct timeval resend_time;
  28
  29 struct resend *find_request(const unsigned char *prefix, unsigned char plen,
  30                             struct resend **previous_return);
  31 void flush_resends(struct neighbour *neigh);
  32 int record_resend(int kind, const unsigned char *prefix, unsigned char plen,
  33                    unsigned short seqno, const unsigned char *id,
  34                    struct interface *ifp, int delay);
  35 int unsatisfied_request(const unsigned char *prefix, unsigned char plen,
  36                         unsigned short seqno, const unsigned char *id);
  37 int request_redundant(struct interface *ifp,
  38                       const unsigned char *prefix, unsigned char plen,
  39                       unsigned short seqno, const unsigned char *id);
  40 int satisfy_request(const unsigned char *prefix, unsigned char plen,
  41                     unsigned short seqno, const unsigned char *id,
  42                     struct interface *ifp);
  43
  44 void expire_resend(void);
  45 void recompute_resend_time(void);
  46 void do_resend(void);
  47
  48 #endif /* BABEL_RESEND_H */