2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #ifndef __CM_SERVER_H_ENV__
11 #define __CM_SERVER_H_ENV__ 1
16 #include <netinet/in.h>
20 /* pointed to by volumes and cells without holds; cm_serverLock is obtained
21 * at the appropriate times to change the pointers to these servers.
23 typedef struct cm_server {
24 struct cm_server *allNextp; /* locked by cm_serverLock */
25 struct sockaddr_in addr; /* by mx */
27 struct cm_conn *connsp; /* locked by cm_connLock */
28 afs_int32 flags; /* by mx */
29 afs_int32 waitCount; /* by mx */
30 afs_int32 capabilities; /* by mx */
31 struct cm_cell *cellp; /* cell containing this server */
32 unsigned long refCount; /* locked by cm_serverLock */
34 unsigned short ipRank; /* server priority */
37 enum repstate {not_busy, busy, offline};
39 typedef struct cm_serverRef {
40 struct cm_serverRef *next; /* locked by cm_serverLock */
41 struct cm_server *server; /* locked by cm_serverLock */
42 enum repstate status; /* locked by cm_serverLock */
43 unsigned long refCount; /* locked by cm_serverLock */
47 #define CM_SERVER_VLDB 1 /* a VLDB server */
48 #define CM_SERVER_FILE 2 /* a file server */
51 #define CM_SERVERFLAG_DOWN 1 /* server is down */
52 #define CM_SERVERFLAG_PREF_SET 2 /* server preference set by user */
53 #define CM_SERVERFLAG_PINGING 4 /* a ping against this server in progress */
55 /* flags for procedures */
56 #define CM_FLAG_CHECKUPSERVERS 1 /* check working servers */
57 #define CM_FLAG_CHECKDOWNSERVERS 2 /* check down servers */
59 /* values for ipRank */
60 #define CM_IPRANK_TOP 5000 /* on same machine */
61 #define CM_IPRANK_HI 20000 /* on same subnet */
62 #define CM_IPRANK_MED 30000 /* on same network */
63 #define CM_IPRANK_LOW 40000 /* on different networks */
65 /* the maximum number of network interfaces that this client has */
67 #define CM_MAXINTERFACE_ADDR 16
69 extern cm_server_t *cm_NewServer(struct sockaddr_in *addrp, int type,
70 struct cm_cell *cellp);
72 extern cm_serverRef_t *cm_NewServerRef(struct cm_server *serverp);
74 extern LONG_PTR cm_ChecksumServerList(cm_serverRef_t *serversp);
76 extern void cm_GetServer(cm_server_t *);
78 extern void cm_GetServerNoLock(cm_server_t *);
80 extern void cm_PutServer(cm_server_t *);
82 extern void cm_PutServerNoLock(cm_server_t *);
84 extern cm_server_t *cm_FindServer(struct sockaddr_in *addrp, int type);
86 extern osi_rwlock_t cm_serverLock;
88 extern void cm_InitServer(void);
90 extern void cm_CheckServers(long flags, struct cm_cell *cellp);
92 extern cm_server_t *cm_allServersp;
94 extern void cm_SetServerPrefs(cm_server_t * serverp);
96 extern void cm_InsertServerList(cm_serverRef_t** list,cm_serverRef_t* element);
98 extern long cm_ChangeRankServer(cm_serverRef_t** list, cm_server_t* server);
100 extern void cm_RandomizeServer(cm_serverRef_t** list);
102 extern void cm_FreeServer(cm_server_t* server);
104 extern void cm_FreeServerList(cm_serverRef_t** list);
106 extern void cm_ForceNewConnectionsAllServers(void);
108 #endif /* __CM_SERVER_H_ENV__ */