src/icmp/net_db.h

   1 /*
   2  * Copyright (C) 1996-2018 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef ICMP_NET_DB_H
  10 #define ICMP_NET_DB_H
  11
  12 #include "hash.h"
  13 #include "ip/forward.h"
  14 #include "mem/forward.h"
  15
  16 class CachePeer;
  17 class HttpRequest;
  18 class netdbEntry;
  19 class PeerSelector;
  20 class StoreEntry;
  21 class URL;
  22
  23 class net_db_name:
  24     public hash_link /* must be first */
  25 {
  26     MEMPROXY_CLASS(net_db_name);
  27
  28 public:
  29     net_db_name(const char *name, netdbEntry *);
  30     ~net_db_name() { xfree(key); }
  31
  32     net_db_name *next;
  33     netdbEntry *net_db_entry;
  34 };
  35
  36 // POD
  37 class net_db_peer
  38 {
  39 public:
  40     const char *peername;
  41     double hops;
  42     double rtt;
  43     time_t expires;
  44 };
  45
  46 class netdbEntry:
  47     public hash_link /* must be first */
  48 {
  49     MEMPROXY_CLASS(netdbEntry);
  50
  51 public:
  52     netdbEntry() { *network = 0; }
  53
  54     char network[MAX_IPSTRLEN];
  55     int pings_sent = 0;
  56     int pings_recv = 0;
  57     double hops = 0;
  58     double rtt = 1.0;
  59     time_t next_ping_time = 0;
  60     time_t last_use_time = 0;
  61     int link_count = 0;
  62     net_db_name *hosts = nullptr;
  63     net_db_peer *peers = nullptr;
  64     int n_peers_alloc = 0;
  65     int n_peers = 0;
  66 };
  67
  68 void netdbInit(void);
  69
  70 void netdbHandlePingReply(const Ip::Address &from, int hops, int rtt);
  71 void netdbPingSite(const char *hostname);
  72 void netdbDump(StoreEntry *);
  73
  74 void netdbFreeMemory(void);
  75 int netdbHostHops(const char *host);
  76 int netdbHostRtt(const char *host);
  77 void netdbUpdatePeer(const URL &, CachePeer * e, int rtt, int hops);
  78
  79 void netdbDeleteAddrNetwork(Ip::Address &addr);
  80 void netdbBinaryExchange(StoreEntry *);
  81 void netdbExchangeStart(void *);
  82
  83 void netdbExchangeUpdatePeer(Ip::Address &, CachePeer *, double, double);
  84 CachePeer *netdbClosestParent(PeerSelector *);
  85 void netdbHostData(const char *host, int *samp, int *rtt, int *hops);
  86
  87 #endif /* ICMP_NET_DB_H */
  88