/* * Copyright 2000, International Business Machines Corporation and others. * All Rights Reserved. * * This software has been released under the terms of the IBM Public * License. For details, see the LICENSE file in the top-level source * directory or online at http://www.openafs.org/dl/license10.html */ #include "fs_stats.h" /*File Server stats package */ #ifdef AFS_PTHREAD_ENV /* * There are three locks in the host package. * the global hash lock protects hash chains. * the global list lock protects the list of hosts. * a mutex in each host structure protects the structure. * precedence is host_listlock_mutex, host->mutex, host_glock_mutex. */ #include #include #include extern pthread_mutex_t host_glock_mutex; #define H_LOCK \ assert(pthread_mutex_lock(&host_glock_mutex) == 0) #define H_UNLOCK \ assert(pthread_mutex_unlock(&host_glock_mutex) == 0) extern pthread_key_t viced_uclient_key; #else /* AFS_PTHREAD_ENV */ #define H_LOCK #define H_UNLOCK #endif /* AFS_PTHREAD_ENV */ #define h_MAXHOSTTABLEENTRIES 1000 #define h_HASHENTRIES 256 /* Power of 2 */ #define h_MAXHOSTTABLES 200 #define h_HTSPERBLOCK 512 /* Power of 2 */ #define h_HTSHIFT 9 /* log base 2 of HTSPERBLOCK */ #define h_threadsPerSlot 32 /* bits per afs_int32 */ #define h_threadsShift 5 /* for multiply/divide */ #define h_threadsMask 31 /* for remainder */ /* size of the hold array for each host */ #define h_maxSlots (((MAX_FILESERVER_THREAD+h_threadsPerSlot-1)>>h_threadsShift)+1) struct Identity { char valid; /* zero if UUID is unknown */ afsUUID uuid; }; struct AddrPort { afs_uint32 addr; /* in network byte order */ afs_uint16 port; /* in network byte order */ afs_int16 valid; }; struct Interface { afsUUID uuid; int numberOfInterfaces; struct AddrPort interface[1];/* there are actually more than one here */ /* in network byte order */ }; struct host { struct host *next, *prev; /* linked list of all hosts */ struct rx_connection *callback_rxcon; /* rx callback connection */ afs_int32 holds[h_maxSlots]; /* holds on this host; 1 bit per lwp. * A hold prevents this structure and * inferior structures from disappearing */ afs_uint32 host; /* IP address of host interface that is * currently being used, in network * byte order */ afs_uint16 port; /* port address of host */ char Console; /* XXXX This host is a console */ unsigned short hostFlags; /* bit map */ #if FS_STATS_DETAILED char InSameNetwork; /*Is host's addr in the same network as * the File Server's? */ char dummy[3]; /* for padding */ #endif /* FS_STATS_DETAILED */ char hcpsfailed; /* Retry the cps call next time */ prlist hcps; /* cps for hostip acls */ afs_uint32 LastCall; /* time of last call from host */ afs_uint32 ActiveCall; /* time of any call but gettime, getstats and getcaps */ struct client *FirstClient; /* first connection from host */ afs_uint32 cpsCall; /* time of last cps call from this host */ struct Interface *interface; /* all alternate addr for client */ afs_uint32 cblist; /* Call back list for this host */ /* * These don't get zeroed, keep them at the end. If index doesn't * follow an unsigned short then we need to pad to ensure that * the index fields isn't zeroed. XXX */ afs_uint32 index; /* Host table index, for vicecb.c */ struct Lock lock; /* Write lock for synchronization of * VenusDown flag */ #ifdef AFS_PTHREAD_ENV pthread_cond_t cond; /* used to wait on hcpsValid */ #endif /* AFS_PTHREAD_ENV */ }; /* * Don't zero the index, lock or condition varialbles */ #define HOST_TO_ZERO(H) (int)(((char *)(&((H)->index))-(char *)(H))) struct h_AddrHashChain { struct host *hostPtr; struct h_AddrHashChain *next; afs_uint32 addr; afs_uint16 port; }; struct h_UuidHashChain { struct host *hostPtr; struct h_UuidHashChain *next; }; struct client { struct client *next; /* next client entry for host */ struct host *host; /* ptr to parent host entry */ afs_int32 sid; /* Connection number from this host */ prlist CPS; /* cps for authentication */ int ViceId; /* Vice ID of user */ afs_int32 expTime; /* RX-only: expiration time */ afs_uint32 LastCall; /* time of last call */ afs_uint32 VenusEpoch; /* Venus start time--used to identify * venus. Actually, now an extension of the * sid, which is why it moved. */ afs_int32 refCount; /* reference count */ char deleted; /* True if this client should be deleted * when there are no more users of the * structure */ char authClass; /* auth type, RX-only */ char prfail; /* True if prserver couldn't be contacted */ #if FS_STATS_DETAILED char InSameNetwork; /* Is client's IP address in the same * network as ours? */ #else /* FS_STATS_DETAILED */ char dummy; /* For padding */ #endif /* FS_STATS_DETAILED */ struct Lock lock; /* lock to ensure CPS valid if entry * on host's clients list. */ }; /* Don't zero the lock */ #define CLIENT_TO_ZERO(C) ((int)(((char *)(&((C)->lock))-(char *)(C)))) /* * key for the client structure stored in connection specific data */ extern int rxcon_client_key; /* Some additional functions to get at client information. Client must have an active connection for this to work. If a lwp is working on a request for the client, then the client must have a connection */ /* N.B. h_UserName returns pointer to static data; also relatively expensive */ extern char *h_UserName(struct client *client); /* all threads whose thread-id is greater than the size of the hold array, ** then use the most significant bit in the 'hold' field in the host structure */ #ifdef AFS_PTHREAD_ENV #define h_lwpIndex() ( ((long)(pthread_getspecific(rx_thread_id_key)) > \ ((h_maxSlots << h_threadsShift)-1)) ? \ (h_maxSlots << h_threadsShift) -1 : \ (long)(pthread_getspecific(rx_thread_id_key)) ) #else /* AFS_PTHREAD_ENV */ #define h_lwpIndex() ( (LWP_Index() > ((h_maxSlots << h_threadsShift)-1)) ? \ (h_maxSlots << h_threadsShift) -1 : \ LWP_Index() ) #endif /* AFS_PTHREAD_ENV */ #define h_holdIndex()( h_lwpIndex() & h_threadsMask) #define h_holdSlot() ( h_lwpIndex() >> h_threadsShift) /*index in 'holds' */ #define h_holdbit() ( 1<holds[h_holdSlot()] |= h_holdbit()) extern int h_Release(register struct host *host); extern int h_Release_r(register struct host *host); #define h_Held_r(host) ((h_holdbit() & (host)->holds[h_holdSlot()]) != 0) extern int h_OtherHolds_r(register struct host *host); #define h_Lock(host) ObtainWriteLock(&(host)->lock) extern int h_Lock_r(register struct host *host); #define h_Unlock(host) ReleaseWriteLock(&(host)->lock) #define h_Unlock_r(host) ReleaseWriteLock(&(host)->lock) #define AddCallBack(host, fid) AddCallBack1((host), (fid), (afs_uint32 *)0, 1/*CB_NORMAL*/, 0) #define AddVolCallBack(host, fid) AddCallBack1((host), (fid), (afs_uint32 *)0, 3/*CB_VOLUME*/, 0) #define AddBulkCallBack(host, fid) AddCallBack1((host), (fid), (afs_uint32 *)0, 4/*CB_BULK*/, 0) /* operations on the global linked list of hosts */ #define h_InsertList_r(h) (h)->next = hostList; \ (h)->prev = 0; \ hostList ? (hostList->prev = (h)):0; \ hostList = (h); \ hostCount++; #define h_DeleteList_r(h) assert(hostCount>0); \ hostCount--; \ (h)->next ? ((h)->next->prev = (h)->prev):0;\ (h)->prev ? ((h)->prev->next = (h)->next):0;\ ( h == hostList )? (hostList = h->next):0; extern int DeleteAllCallBacks_r(struct host *host, int deletefe); extern struct host *h_Alloc(register struct rx_connection *r_con); extern struct host *h_Alloc_r(register struct rx_connection *r_con); extern int h_Lookup_r(afs_uint32 hostaddr, afs_uint16 hport, int *heldp, struct host **hostp); extern void hashInsert_r(afs_uint32 addr, afs_uint16 port, struct host* host); extern struct host *h_LookupUuid_r(afsUUID * uuidp); extern void h_Enumerate(int (*proc) (), char *param); extern struct host *h_GetHost_r(struct rx_connection *tcon); extern struct client *h_FindClient_r(struct rx_connection *tcon); extern int h_ReleaseClient_r(struct client *client); extern struct client *h_ID2Client(afs_int32 vid); extern int GetClient(struct rx_connection *tcon, struct client **cp); extern int PutClient(struct client **cp); extern void h_PrintStats(); extern void h_PrintClients(); extern void h_GetWorkStats(); extern void h_flushhostcps(register afs_uint32 hostaddr, register afs_uint16 hport); extern void hashInsertUuid_r(struct afsUUID *uuid, struct host *host); extern void hashInsert_r(afs_uint32 addr, afs_uint16 port, struct host *host); extern int hashDelete_r(afs_uint32 addr, afs_uint16 port, struct host *host); extern int initInterfaceAddr_r(struct host *host, struct interfaceAddr *interf); extern int addInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port); extern int removeInterfaceAddr_r(struct host *host, afs_uint32 addr, afs_uint16 port); extern int removeAddress_r(struct host *host, afs_uint32 addr, afs_uint16 port); extern void *ShutDown(void *); struct Interface *MultiVerifyInterface_r(); struct host *(hosttableptrs[h_MAXHOSTTABLES]); /* Used by h_itoh */ #define h_htoi(host) ((host)->index) /* index isn't zeroed, no need to lock */ #define h_itoh(hostindex) (hosttableptrs[(hostindex)>>h_HTSHIFT]+((hostindex)&(h_HTSPERBLOCK-1))) #define rxr_GetEpoch(aconn) (((struct rx_connection *)(aconn))->epoch) #define rxr_CidOf(aconn) (((struct rx_connection *)(aconn))->cid) #define rxr_PortOf(aconn) \ rx_PortOf(rx_PeerOf(((struct rx_connection *)(aconn)))) #define rxr_HostOf(aconn) \ rx_HostOf(rx_PeerOf((struct rx_connection *)(aconn))) #define HCPS_INPROGRESS 0x01 /*set when CPS is being updated */ #define HCPS_WAITING 0x02 /*waiting for CPS to get updated */ #define ALTADDR 0x04 /*InitCallBack is being done */ #define VENUSDOWN 0x08 /* venus CallBack failed */ #define HOSTDELETED 0x10 /* host delated */ #define CLIENTDELETED 0x20 /* client deleted */ #define RESETDONE 0x40 /* callback reset done */ #define HFE_LATER 0x80 /* host has FE_LATER callbacks */ #define HERRORTRANS 0x100 /* do error translation */ #define HWHO_INPROGRESS 0x200 /* set when WhoAreYou running */