6adc660b49
- fix for LASTSEEN breakage: don't do anything in the CLI other than flag changes to be made by the parent - split out master parts from cluster_check_master() into cluster_check_slaves()
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
// L2TPNS Clustering Stuff
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// $Id: cluster.h,v 1.5 2004-07-08 16:54:35 bodea Exp $
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#ifndef __CLUSTER_H__
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#define __CLUSTER_H__
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#define C_HEARTBEAT 1
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#define C_ACK 2
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#define C_PING 3
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#define C_TUNNEL 4 // Tunnel structure.
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#define C_SESSION 5 // Session structure.
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#define C_GOODBYE 6
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#define C_LASTSEEN 7 // Tell master the last heartbeat that I handled.
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#define C_KILL 8 // Tell a slave to die.
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#define C_FORWARD 9 // Forwarded packet..
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#define C_BYTES 10 // Update byte counters.
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#define C_THROTTLE 11 // A packet for the master to throttle. (The TBF tells direction).
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#define C_CSESSION 12 // Compressed session structure.
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#define C_CTUNNEL 13 // Compressed tunnel structure.
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#define C_GARDEN 14 // Gardened packet
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#define HB_VERSION 3 // Protocol version number..
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#define HB_MAX_SEQ (1<<30) // Maximum sequence number. (MUST BE A POWER OF 2!)
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#define HB_HISTORY_SIZE 64 // How many old heartbeats we remember?? (Must be a factor of HB_MAX_SEQ)
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#define PING_INTERVAL 5 // 0.5 seconds. Needs to be short to keep session tables fresh.
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#define HB_TIMEOUT (15*2*PING_INTERVAL) // 15 seconds without heartbeat triggers an election..
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#define CLUSTERPORT 32792
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#define CLUSTER_MAX_SIZE 32 // No more than 32 machines in a cluster!
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#define DEFAULT_MCAST_ADDR "239.192.13.13" // Need an assigned number!
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#define DEFAULT_MCAST_INTERFACE "eth0"
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typedef struct {
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u32 version; // protocol version.
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u32 seq; // Sequence number for this heatbeat.
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u32 basetime; // What time I started
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u32 clusterid; // Id for this cluster?
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u32 highsession; // Id of the highest in-use session.
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u32 freesession; // Id of the first free session.
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u32 hightunnel; // Id of the highest used tunnel.
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u32 size_sess; // Size of the session structure.
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u32 size_tunn; // size of the tunnel structure.
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u32 interval; // ping/heartbeat interval (if changed)
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u32 timeout; // heartbeat timeout (if changed)
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char reserved[128 - 11*sizeof(u32)]; // Pad out to 128 bytes.
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} heartt;
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typedef struct { /* Used to update byte counters on the */
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/* master. */
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u32 sid;
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u32 in;
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u32 out;
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} bytest;
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typedef struct {
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u32 addr; //
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u32 ver; // version of structure.
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u32 undef; // Number of undefined structures. 0 if up-to-date.
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u32 basetime; // start time of this peer.
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} pingt;
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int cluster_init();
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int processcluster(char *buf, int size, u32 addr);
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int cluster_forward_packet(char *buf, int size, u32 addr);
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int cluster_send_session(int sid);
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int cluster_send_tunnel(int tid);
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int master_forward_packet(char * data, int size, u32 addr, int port);
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int master_throttle_packet(int tid, char * data, int size);
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int master_garden_packet(sessionidt s, char * data, int size);
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void master_update_counts(void);
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void cluster_send_ping(time_t basetime);
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void cluster_heartbeat(void);
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void cluster_check_master(void);
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void cluster_check_slaves(void);
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int show_cluster(struct cli_def *cli, char *command, char **argv, int argc);
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#endif /* __CLUSTER_H__ */
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