bb7ca5a245febcc03b0baafd5f3deea51f23f4ea
1 // L2TPNS Clustering Stuff
2 // $Id: cluster.h,v 1.16 2006-12-04 20:54:51 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
24 #define C_BUNDLE 17 // Bundle structure.
25 #define C_CBUNDLE 18 // Compressed bundle structure.
26 #define C_MPPP_FORWARD 19 // MPPP Forwarded packet..
27 #define C_PPPOE_FORWARD 20 // PPPOE Forwarded packet..
29 #define HB_VERSION 7 // Protocol version number..
30 #define HB_MAX_SEQ (1<<30) // Maximum sequence number. (MUST BE A POWER OF 2!)
31 #define HB_HISTORY_SIZE 64 // How many old heartbeats we remember?? (Must be a factor of HB_MAX_SEQ)
33 #define PING_INTERVAL 5 // 0.5 seconds. Needs to be short to keep session tables fresh.
34 #define HB_TIMEOUT (15*2*PING_INTERVAL) // 15 seconds without heartbeat triggers an election..
36 #define CLUSTERPORT 32792
37 #define CLUSTER_MAX_SIZE 32 // No more than 32 machines in a cluster!
39 #define DEFAULT_MCAST_ADDR "239.192.13.13" // Need an assigned number!
40 #define DEFAULT_MCAST_INTERFACE "eth0"
43 uint32_t version
; // protocol version.
44 uint32_t seq
; // Sequence number for this heatbeat.
45 uint32_t basetime
; // What time I started
46 uint32_t clusterid
; // Id for this cluster?
48 uint32_t highsession
; // Id of the highest in-use session.
49 uint32_t freesession
; // Id of the first free session.
50 uint32_t highbundle
; // Id of the highest used bundle.
51 uint32_t hightunnel
; // Id of the highest used tunnel.
52 uint32_t size_sess
; // Size of the session structure.
54 uint32_t size_bund
; // size of the bundle structure.
55 uint32_t size_tunn
; // size of the tunnel structure.
56 uint32_t interval
; // ping/heartbeat interval
57 uint32_t timeout
; // heartbeat timeout
59 uint64_t table_version
; // # state changes processed by cluster
61 char reserved
[128 - 13*sizeof(uint32_t) - sizeof(uint64_t)]; // Pad out to 128 bytes.
64 typedef struct { /* Used to update byte counters on the */
74 in_addr_t addr
; // peer address
75 uint32_t ver
; // version of structure.
76 uint32_t undef
; // Number of undefined structures. 0 if up-to-date.
77 uint32_t basetime
; // start time of this peer.
80 int cluster_init(void);
81 int processcluster(uint8_t *buf
, int size
, in_addr_t addr
);
82 int cluster_send_session(int sid
);
83 int cluster_send_bundle(int bid
);
84 int cluster_send_tunnel(int tid
);
85 int master_forward_packet(uint8_t *data
, int size
, in_addr_t addr
, uint16_t port
, uint16_t indexudp
);
86 int master_forward_dae_packet(uint8_t *data
, int size
, in_addr_t addr
, int port
);
87 int master_throttle_packet(int tid
, uint8_t *data
, int size
);
88 int master_garden_packet(sessionidt s
, uint8_t *data
, int size
);
89 int master_forward_mppp_packet(sessionidt s
, uint8_t *data
, int size
);
90 void master_update_counts(void);
91 void cluster_send_ping(time_t basetime
);
92 void cluster_heartbeat(void);
93 void cluster_check_master(void);
94 void cluster_check_slaves(void);
95 int cmd_show_cluster(struct cli_def
*cli
, const char *command
, char **argv
, int argc
);
96 int master_forward_pppoe_packet(uint8_t *data
, int size
, uint8_t codepad
);
98 #endif /* __CLUSTER_H__ */