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 /* pointed to by volumes and cells without holds; cm_serverLock is obtained
17 * at the appropriate times to change the pointers to these servers.
19 typedef struct cm_server {
20 struct cm_server *allNextp; /* locked by cm_serverLock */
21 struct sockaddr_in addr; /* by mx */
23 struct cm_conn *connsp; /* locked by cm_connLock */
24 long flags; /* by mx */
25 struct cm_cell *cellp; /* cell containing this server */
26 int refCount; /* locked by cm_serverLock */
28 unsigned short ipRank; /* server priority */
31 enum repstate {not_busy, busy, offline};
33 typedef struct cm_serverRef {
34 struct cm_serverRef *next;
35 struct cm_server *server;
40 #define CM_SERVER_VLDB 1 /* a VLDB server */
41 #define CM_SERVER_FILE 2 /* a file server */
44 #define CM_SERVERFLAG_DOWN 1 /* server is down */
46 /* flags for procedures */
47 #define CM_FLAG_CHECKUPSERVERS 1 /* check working servers */
48 #define CM_FLAG_CHECKDOWNSERVERS 2 /* check down servers */
50 /* values for ipRank */
51 #define CM_IPRANK_TOP 5000 /* on same machine */
52 #define CM_IPRANK_HI 20000 /* on same subnet */
53 #define CM_IPRANK_MED 30000 /* on same network */
54 #define CM_IPRANK_LOW 40000 /* on different networks */
56 /* the maximum number of network interfaces that this client has */
58 #define CM_MAXINTERFACE_ADDR 16
59 extern int cm_noIPAddr; /* number of client network interfaces */
60 extern int cm_IPAddr[CM_MAXINTERFACE_ADDR]; /* client's IP address */
61 extern int cm_SubnetMask[CM_MAXINTERFACE_ADDR];/* client's subnet mask*/
62 extern int cm_NetMtu[CM_MAXINTERFACE_ADDR]; /* client's MTU sizes */
63 extern int cm_NetFlags[CM_MAXINTERFACE_ADDR]; /* network flags */
65 extern cm_server_t *cm_NewServer(struct sockaddr_in *addrp, int type,
66 struct cm_cell *cellp);
68 extern cm_serverRef_t *cm_NewServerRef(struct cm_server *serverp);
70 extern long cm_ChecksumServerList(cm_serverRef_t *serversp);
72 extern void cm_PutServer(cm_server_t *);
74 extern cm_server_t *cm_FindServer(struct sockaddr_in *addrp, int type);
76 extern osi_rwlock_t cm_serverLock;
78 extern void cm_InitServer(void);
80 extern void cm_CheckServers(long flags, struct cm_cell *cellp);
82 extern cm_server_t *cm_allServersp;
84 extern void cm_SetServerPrefs(cm_server_t * serverp);
86 extern void cm_InsertServerList(cm_serverRef_t** list,cm_serverRef_t* element);
88 extern long cm_ChangeRankServer(cm_serverRef_t** list, cm_server_t* server);
90 extern void cm_RandomizeServer(cm_serverRef_t** list);
92 #endif /* __CM_SERVER_H_ENV__ */