X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/3aa4eda8b1e0c4abc04439affe850d33648c7472..aa77d4f89aa291e851c9be8a64ecfdb1434e83c9:/cluster.h

diff --git a/cluster.h b/cluster.h
index 8b92918..3482c9c 100644
--- a/cluster.h
+++ b/cluster.h
@@ -1,18 +1,85 @@
 // L2TPNS Clustering Stuff
-// $Id: cluster.h,v 1.1 2003/12/16 07:07:39 fred_nerk Exp $
+// $Id: cluster.h,v 1.9.2.1 2005/05/23 12:48:18 bodea 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 C_MASTER		15	// Tell a slave the address of the master.
+
+#define HB_VERSION		4	// 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 {
+	uint32_t version;	// protocol version.
+	uint32_t seq;		// Sequence number for this heatbeat.
+	uint32_t basetime;	// What time I started
+	uint32_t clusterid;	// Id for this cluster?
+
+	uint32_t highsession;	// Id of the highest in-use session.
+	uint32_t freesession;	// Id of the first free session.
+	uint32_t hightunnel;	// Id of the highest used tunnel.
+	uint32_t size_sess;	// Size of the session structure.
+
+	uint32_t size_tunn;	// size of the tunnel structure.
+	uint32_t interval;	// ping/heartbeat interval
+	uint32_t timeout;	// heartbeat timeout
+
+	uint64_t table_version;	// # state changes processed by cluster
+
+	char reserved[128 - 13*sizeof(uint32_t)];	// Pad out to 128 bytes.
+} heartt;
+
+typedef struct {		/* Used to update byte counters on the */
+				/* master. */
+	uint32_t sid;
+	uint32_t in;
+	uint32_t out;
+} bytest;
+
+typedef struct {
+	in_addr_t addr;		// peer address
+	uint32_t ver;		// version of structure.
+	uint32_t undef;		// Number of undefined structures. 0 if up-to-date.
+	uint32_t basetime;	// start time of this peer.
+} pingt;
+
+int cluster_init(void);
+int processcluster(char *buf, int size, in_addr_t addr);
+int cluster_send_session(int sid);
+int cluster_send_tunnel(int tid);
+int master_forward_packet(char *data, int size, in_addr_t 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(void);
+void cluster_check_master(void);
+void cluster_check_slaves(void);
+int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc);
+
+#endif /* __CLUSTER_H__ */