1 // L2TPNS Clustering Stuff
2 // $Id: cluster.h,v 1.14 2005/07/31 10:04:10 bodea Exp $
11 #define C_TUNNEL 4 // Tunnel structure.
12 #define C_SESSION 5 // Session structure.
14 #define C_LASTSEEN 7 // Tell master the last heartbeat that I handled.
15 #define C_KILL 8 // Tell a slave to die.
16 #define C_FORWARD 9 // Forwarded packet..
17 #define C_BYTES 10 // Update byte counters.
18 #define C_THROTTLE 11 // A packet for the master to throttle. (The TBF tells direction).
19 #define C_CSESSION 12 // Compressed session structure.
20 #define C_CTUNNEL 13 // Compressed tunnel structure.
21 #define C_GARDEN 14 // Gardened packet
22 #define C_MASTER 15 // Tell a slave the address of the master.
23 #define C_FORWARD_DAE 16 // A DAE packet for the master to handle
25 #define HB_VERSION 5 // Protocol version number..
26 #define HB_MAX_SEQ (1<<30) // Maximum sequence number. (MUST BE A POWER OF 2!)
27 #define HB_HISTORY_SIZE 64 // How many old heartbeats we remember?? (Must be a factor of HB_MAX_SEQ)
29 #define PING_INTERVAL 5 // 0.5 seconds. Needs to be short to keep session tables fresh.
30 #define HB_TIMEOUT (15*2*PING_INTERVAL) // 15 seconds without heartbeat triggers an election..
32 #define CLUSTERPORT 32792
33 #define CLUSTER_MAX_SIZE 32 // No more than 32 machines in a cluster!
35 #define DEFAULT_MCAST_ADDR "239.192.13.13" // Need an assigned number!
36 #define DEFAULT_MCAST_INTERFACE "eth0"
39 uint32_t version
; // protocol version.
40 uint32_t seq
; // Sequence number for this heatbeat.
41 uint32_t basetime
; // What time I started
42 uint32_t clusterid
; // Id for this cluster?
44 uint32_t highsession
; // Id of the highest in-use session.
45 uint32_t freesession
; // Id of the first free session.
46 uint32_t hightunnel
; // Id of the highest used tunnel.
47 uint32_t size_sess
; // Size of the session structure.
49 uint32_t size_tunn
; // size of the tunnel structure.
50 uint32_t interval
; // ping/heartbeat interval
51 uint32_t timeout
; // heartbeat timeout
53 uint64_t table_version
; // # state changes processed by cluster
55 char reserved
[128 - 13*sizeof(uint32_t)]; // Pad out to 128 bytes.
58 typedef struct { /* Used to update byte counters on the */
68 in_addr_t addr
; // peer address
69 uint32_t ver
; // version of structure.
70 uint32_t undef
; // Number of undefined structures. 0 if up-to-date.
71 uint32_t basetime
; // start time of this peer.
74 int cluster_init(void);
75 int processcluster(uint8_t *buf
, int size
, in_addr_t addr
);
76 int cluster_send_session(int sid
);
77 int cluster_send_tunnel(int tid
);
78 int master_forward_packet(uint8_t *data
, int size
, in_addr_t addr
, int port
);
79 int master_forward_dae_packet(uint8_t *data
, int size
, in_addr_t addr
, int port
);
80 int master_throttle_packet(int tid
, uint8_t *data
, int size
);
81 int master_garden_packet(sessionidt s
, uint8_t *data
, int size
);
82 void master_update_counts(void);
83 void cluster_send_ping(time_t basetime
);
84 void cluster_heartbeat(void);
85 void cluster_check_master(void);
86 void cluster_check_slaves(void);
87 int cmd_show_cluster(struct cli_def
*cli
, char *command
, char **argv
, int argc
);
89 #endif /* __CLUSTER_H__ */