* Wed Jun 23 2004 David Parrish <david@dparrish.com> 2.0.0

[l2tpns.git] / cluster.h

diff --git a/cluster.h b/cluster.h
index 23ce345..2bfba31 100644 (file)
--- a/cluster.h
+++ b/cluster.h
@@ -1,19 +1,85 @@
 // L2TPNS Clustering Stuff
-// $Id: cluster.h,v 1.2 2004/03/05 00:09:03 fred_nerk Exp $
+// $Id: cluster.h,v 1.3 2004/06/23 03:52:24 fred_nerk Exp $
 
-#define C_HELLO                        1
-#define C_HELLO_RESPONSE       2
+#ifndef __CLUSTER_H__
+#define __CLUSTER_H__
+
+
+#define C_HEARTBEAT            1
+#define C_ACK                  2
 #define C_PING                 3
-#define C_TUNNEL               4
-#define C_SESSION              5
+#define C_TUNNEL               4       // Tunnel structure.
+#define C_SESSION              5       // Session structure.
 #define C_GOODBYE              6
+#define C_LASTSEEN             7       // Tell master the last heartbeat that I handled.
+#define C_KILL                 8       // Tell a slave to die.
+#define C_FORWARD              9       // Forwarded packet..
+#define C_BYTES                 10      // Update byte counters.
+#define C_THROTTLE             11      // A packet for the master to throttle. (The TBF tells direction).
+#define C_CSESSION             12      // Compressed session structure.
+#define C_CTUNNEL              13      // Compressed tunnel structure.
+#define C_GARDEN               14      // Gardened packet
+
+#define HB_VERSION             2       // Protocol version number..
+#define HB_MAX_SEQ             (1<<30) // Maximum sequence number. (MUST BE A POWER OF 2!)
+#define HB_HISTORY_SIZE                64      // How many old heartbeats we remember?? (Must be a factor of HB_MAX_SEQ)
+
+#define PING_INTERVAL          5       // 0.5 seconds. Needs to be short to keep session tables fresh.
+#define HB_TIMEOUT             (15*2*PING_INTERVAL) // 15 seconds without heartbeat triggers an election..
 
 #define CLUSTERPORT            32792
-#define CLUSTERCLIENTPORT      32793
 #define UDP                    17
 #define TIMEOUT                        20
 #define IL                     sizeof(int)
 
-int cluster_init(uint32_t bind_address, int server);
-int cluster_send_message(unsigned long ip_address, uint32_t vip, char type, void *data, int datalen);
-int processcluster(char *buf, int l);
+#define CLUSTER_MAX_SIZE       32      // No more than 32 machines in a cluster!
+
+#define DEFAULT_MCAST_ADDR     "239.192.13.13"         // Need an assigned number!
+#define DEFAULT_MCAST_INTERFACE        "eth0"
+
+typedef struct {
+       u32     version;        // protocol version.
+       u32     seq;            // Sequence number for this heatbeat.
+       u32     basetime;       // What time I started
+       u32     clusterid;      // Id for this cluster?
+
+       u32     highsession;    // Id of the highest in-use session.
+       u32     freesession;    // Id of the first free session.
+       u32     hightunnel;     // Id of the highest used tunnel.
+       u32     size_sess;      // Size of the session structure.
+
+       u32     size_tunn;      // size of the tunnel structure.
+
+       char reserved[128 - 9*sizeof(u32)];     // Pad out to 128 bytes.
+} heartt;
+
+typedef struct {               /* Used to update byte counters on the */
+                               /* master. */
+       u32        sid;
+       u32        in;
+       u32        out;
+} bytest;
+
+typedef struct {
+       u32     addr;           //
+       u32     ver;            // version of structure.
+       u32     undef;          // Number of undefined structures. 0 if up-to-date.
+       u32     basetime;       // start time of this peer.
+} pingt;
+
+int cluster_init();
+int processcluster(char *buf, int size, u32 addr);
+int cluster_forward_packet(char *buf, int size, u32 addr);
+int cluster_send_session(int sid);
+int cluster_send_tunnel(int tid);
+int master_forward_packet(char * data, int size, u32 addr, int port);
+int master_throttle_packet(int tid, char * data, int size);
+int master_garden_packet(sessionidt s, char * data, int size);
+void master_update_counts(void);
+
+void cluster_send_ping(time_t basetime);
+void cluster_heartbeat(int highsession, int freesession, int hightunnel);
+void cluster_check_master(void);
+int show_cluster(struct cli_def *cli, char *command, char **argv, int argc);
+
+#endif /* __CLUSTER_H__ */