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// L2TPNS Clustering Stuff
// $Id: cluster.h,v 1.16 2006-12-04 20:54:51 bodea Exp $
#ifndef __CLUSTER_H__
#define __CLUSTER_H__
#define C_HEARTBEAT 1
#define C_ACK 2
#define C_PING 3
#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 C_FORWARD_DAE 16 // A DAE packet for the master to handle
#define C_BUNDLE 17 // Bundle structure.
#define C_CBUNDLE 18 // Compressed bundle structure.
#define C_MPPP_FORWARD 19 // MPPP Forwarded packet..
#define C_PPPOE_FORWARD 20 // PPPOE Forwarded packet..
#define HB_VERSION 10 // 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 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 highbundle; // Id of the highest used bundle.
uint32_t hightunnel; // Id of the highest used tunnel.
uint32_t size_sess; // Size of the session structure.
uint32_t size_bund; // size of the bundle 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) - sizeof(uint64_t)]; // Pad out to 128 bytes.
} heartt;
typedef struct { /* Used to update byte counters on the */
/* master. */
uint32_t sid;
uint32_t pin;
uint32_t pout;
uint32_t cin;
uint32_t cout;
} 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(uint8_t *buf, int size, in_addr_t addr);
int cluster_send_session(int sid);
int cluster_send_bundle(int bid);
int cluster_send_tunnel(int tid);
int master_forward_packet(uint8_t *data, int size, in_addr_t addr, uint16_t port, uint16_t indexudp);
int master_forward_dae_packet(uint8_t *data, int size, in_addr_t addr, int port);
int master_throttle_packet(int tid, uint8_t *data, int size);
int master_garden_packet(sessionidt s, uint8_t *data, int size);
int master_forward_mppp_packet(sessionidt s, uint8_t *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, const char *command, char **argv, int argc);
int master_forward_pppoe_packet(uint8_t *data, int size, uint8_t codepad);
#endif /* __CLUSTER_H__ */
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