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 #include <afsconfig.h>
11 #include <afs/param.h>
24 #include <WINNT\syscfg.h>
25 #include <WINNT/afsreg.h>
30 osi_rwlock_t cm_serverLock;
31 osi_rwlock_t cm_syscfgLock;
33 cm_server_t *cm_serversAllFirstp = NULL;
34 cm_server_t *cm_serversAllLastp = NULL;
36 afs_uint32 cm_numFileServers = 0;
37 afs_uint32 cm_numVldbServers = 0;
40 cm_ForceNewConnectionsAllServers(void)
44 lock_ObtainRead(&cm_serverLock);
45 for (tsp = cm_serversAllFirstp;
47 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
48 cm_GetServerNoLock(tsp);
49 lock_ReleaseRead(&cm_serverLock);
50 cm_ForceNewConnections(tsp);
51 lock_ObtainRead(&cm_serverLock);
52 cm_PutServerNoLock(tsp);
54 lock_ReleaseRead(&cm_serverLock);
58 cm_ServerClearRPCStats(void) {
62 lock_ObtainRead(&cm_serverLock);
63 for (tsp = cm_serversAllFirstp;
65 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
69 rx_ClearPeerRPCStats(opcode_VL_ProbeServer>>32, tsp->addr.sin_addr.s_addr, port);
73 rx_ClearPeerRPCStats(opcode_RXAFS_GetCapabilities>>32, tsp->addr.sin_addr.s_addr, port);
74 rx_ClearPeerRPCStats(opcode_RXAFS_GetTime>>32, tsp->addr.sin_addr.s_addr, port);
78 lock_ReleaseRead(&cm_serverLock);
82 * lock_ObtainMutex must be held prior to calling
86 cm_RankServer(cm_server_t * tsp)
88 afs_int32 code = 0; /* start with "success" */
89 struct rx_debugPeer tpeer;
90 struct rx_peer * rxPeer;
93 afs_uint64 perfRank = 0;
97 int isDown = (tsp->flags & CM_SERVERFLAG_DOWN);
98 void *peerRpcStats = NULL;
99 afs_uint64 opcode = 0;
104 opcode = opcode_VL_ProbeServer;
108 opcode = opcode_RXAFS_GetCapabilities;
114 cm_SetServerIPRank(tsp);
120 * There are three potential components to the ranking:
121 * 1. Any administrative set preference whether it be
122 * via "fs setserverprefs", registry or dns.
124 * 2. Network subnet mask comparison.
126 * 3. Performance data.
128 * If there is an administrative rank, that is the
129 * the primary factor. If not the primary factor
130 * is the network ranking.
133 code = rx_GetLocalPeers(tsp->addr.sin_addr.s_addr, port, &tpeer);
135 peerRpcStats = rx_CopyPeerRPCStats(opcode, tsp->addr.sin_addr.s_addr, port);
136 if (peerRpcStats == NULL && tsp->type == CM_SERVER_FILE)
137 peerRpcStats = rx_CopyPeerRPCStats(opcode_RXAFS_GetTime, tsp->addr.sin_addr.s_addr, port);
139 afs_uint64 execTimeSum = _8THMSEC(RPCOpStat_ExecTimeSum(peerRpcStats));
140 afs_uint64 queueTimeSum = _8THMSEC(RPCOpStat_QTimeSum(peerRpcStats));
141 afs_uint64 numCalls = RPCOpStat_NumCalls(peerRpcStats);
144 rtt = (execTimeSum - queueTimeSum) / numCalls;
146 rx_ReleaseRPCStats(peerRpcStats);
149 if (rtt == 0 && tpeer.rtt) {
156 perfRank += (6000 * log_rtt / 5000) * 5000;
158 if (tsp->type == CM_SERVER_FILE) {
159 /* give an edge to servers with high congestion windows */
160 perfRank -= (tpeer.cwind - 1)* 15;
165 if (tsp->adminRank) {
166 newRank = tsp->adminRank * 0.8;
167 newRank += tsp->ipRank * 0.2;
169 newRank = tsp->ipRank;
173 newRank += perfRank * 0.1;
175 newRank += (rand() & 0x000f); /* randomize */
177 if (newRank > 0xFFFF)
178 osi_Log1(afsd_logp, "new server rank %I64u exceeds 0xFFFF", newRank);
181 * If the ranking changes by more than the randomization
182 * factor, update the server reference lists.
184 if (abs(newRank - tsp->activeRank) > 0xf) {
185 tsp->activeRank = newRank;
187 lock_ReleaseMutex(&tsp->mx);
191 * find volumes which might have RO copy
192 * on server and change the ordering of
195 cm_ChangeRankVolume(tsp);
198 /* set preferences for an existing vlserver */
199 cm_ChangeRankCellVLServer(tsp);
202 lock_ObtainMutex(&tsp->mx);
210 cm_PingServer(cm_server_t *tsp)
215 struct rx_connection * rxconnp;
216 Capabilities caps = {0, 0};
220 lock_ObtainMutex(&tsp->mx);
221 if (tsp->flags & CM_SERVERFLAG_PINGING) {
223 osi_SleepM((LONG_PTR)tsp, &tsp->mx);
224 lock_ObtainMutex(&tsp->mx);
226 if (tsp->waitCount == 0)
227 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_PINGING);
229 osi_Wakeup((LONG_PTR)tsp);
230 lock_ReleaseMutex(&tsp->mx);
233 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_PINGING);
234 wasDown = tsp->flags & CM_SERVERFLAG_DOWN;
235 afs_inet_ntoa_r(tsp->addr.sin_addr.S_un.S_addr, hoststr);
236 lock_ReleaseMutex(&tsp->mx);
238 code = cm_ConnByServer(tsp, cm_rootUserp, FALSE, &connp);
240 /* now call the appropriate ping call. Drop the timeout if
241 * the server is known to be down, so that we don't waste a
242 * lot of time retiming out down servers.
245 osi_Log4(afsd_logp, "cm_PingServer server %s (%s) was %s with caps 0x%x",
246 osi_LogSaveString(afsd_logp, hoststr),
247 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
248 wasDown ? "down" : "up",
251 rxconnp = cm_GetRxConn(connp);
253 rx_SetConnHardDeadTime(rxconnp, 10);
254 if (tsp->type == CM_SERVER_VLDB) {
255 code = VL_ProbeServer(rxconnp);
259 code = RXAFS_GetCapabilities(rxconnp, &caps);
262 rx_SetConnHardDeadTime(rxconnp, HardDeadtimeout);
263 rx_PutConnection(rxconnp);
265 } /* got an unauthenticated connection to this server */
267 lock_ObtainMutex(&tsp->mx);
268 if (code >= 0 || code == RXGEN_OPCODE || code == RX_CALL_BUSY) {
269 /* mark server as up */
270 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_DOWN);
273 /* we currently handle 32-bits of capabilities */
274 if (code != RXGEN_OPCODE && code != RX_CALL_BUSY &&
275 caps.Capabilities_len > 0) {
276 tsp->capabilities = caps.Capabilities_val[0];
277 xdr_free((xdrproc_t) xdr_Capabilities, &caps);
278 caps.Capabilities_len = 0;
279 caps.Capabilities_val = 0;
281 tsp->capabilities = 0;
284 osi_Log3(afsd_logp, "cm_PingServer server %s (%s) is up with caps 0x%x",
285 osi_LogSaveString(afsd_logp, hoststr),
286 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
289 /* Now update the volume status if necessary */
291 cm_server_vols_t * tsrvp;
295 for (tsrvp = tsp->vols; tsrvp; tsrvp = tsrvp->nextp) {
296 for (i=0; i<NUM_SERVER_VOLS; i++) {
297 if (tsrvp->ids[i] != 0) {
300 lock_ReleaseMutex(&tsp->mx);
301 code = cm_FindVolumeByID(tsp->cellp, tsrvp->ids[i], cm_rootUserp,
302 &req, CM_GETVOL_FLAG_NO_LRU_UPDATE, &volp);
303 lock_ObtainMutex(&tsp->mx);
305 cm_UpdateVolumeStatus(volp, tsrvp->ids[i]);
314 /* mark server as down */
315 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
316 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_DOWN);
317 tsp->downTime = time(NULL);
319 if (code != VRESTARTING) {
320 lock_ReleaseMutex(&tsp->mx);
321 cm_ForceNewConnections(tsp);
322 lock_ObtainMutex(&tsp->mx);
324 osi_Log3(afsd_logp, "cm_PingServer server %s (%s) is down with caps 0x%x",
325 osi_LogSaveString(afsd_logp, hoststr),
326 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
329 /* Now update the volume status if necessary */
331 cm_server_vols_t * tsrvp;
335 for (tsrvp = tsp->vols; tsrvp; tsrvp = tsrvp->nextp) {
336 for (i=0; i<NUM_SERVER_VOLS; i++) {
337 if (tsrvp->ids[i] != 0) {
340 lock_ReleaseMutex(&tsp->mx);
341 code = cm_FindVolumeByID(tsp->cellp, tsrvp->ids[i], cm_rootUserp,
342 &req, CM_GETVOL_FLAG_NO_LRU_UPDATE, &volp);
343 lock_ObtainMutex(&tsp->mx);
345 cm_UpdateVolumeStatus(volp, tsrvp->ids[i]);
355 if (tsp->waitCount == 0)
356 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_PINGING);
358 osi_Wakeup((LONG_PTR)tsp);
359 lock_ReleaseMutex(&tsp->mx);
367 lock_ObtainRead(&cm_serverLock);
368 for (tsp = cm_serversAllFirstp;
370 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
371 cm_GetServerNoLock(tsp);
372 lock_ReleaseRead(&cm_serverLock);
374 lock_ObtainMutex(&tsp->mx);
376 /* if the server is not down, rank the server */
377 if(!(tsp->flags & CM_SERVERFLAG_DOWN))
380 lock_ReleaseMutex(&tsp->mx);
382 lock_ObtainRead(&cm_serverLock);
383 cm_PutServerNoLock(tsp);
385 lock_ReleaseRead(&cm_serverLock);
388 static void cm_CheckServersSingular(afs_uint32 flags, cm_cell_t *cellp)
390 /* ping all file servers, up or down, with unauthenticated connection,
391 * to find out whether we have all our callbacks from the server still.
392 * Also, ping down VLDBs.
400 lock_ObtainRead(&cm_serverLock);
401 for (tsp = cm_serversAllFirstp;
403 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
404 cm_GetServerNoLock(tsp);
405 lock_ReleaseRead(&cm_serverLock);
407 /* now process the server */
408 lock_ObtainMutex(&tsp->mx);
411 isDown = tsp->flags & CM_SERVERFLAG_DOWN;
412 isFS = tsp->type == CM_SERVER_FILE;
413 isVLDB = tsp->type == CM_SERVER_VLDB;
415 /* only do the ping if the cell matches the requested cell, or we're
416 * matching all cells (cellp == NULL), and if we've requested to ping
417 * this type of {up, down} servers.
419 if ((cellp == NULL || cellp == tsp->cellp) &&
420 ((isDown && (flags & CM_FLAG_CHECKDOWNSERVERS)) ||
421 (!isDown && (flags & CM_FLAG_CHECKUPSERVERS))) &&
422 ((!(flags & CM_FLAG_CHECKVLDBSERVERS) ||
423 isVLDB && (flags & CM_FLAG_CHECKVLDBSERVERS)) &&
424 (!(flags & CM_FLAG_CHECKFILESERVERS) ||
425 isFS && (flags & CM_FLAG_CHECKFILESERVERS)))) {
427 } /* we're supposed to check this up/down server */
428 lock_ReleaseMutex(&tsp->mx);
430 /* at this point, we've adjusted the server state, so do the ping and
436 /* also, run the GC function for connections on all of the
437 * server's connections.
439 cm_GCConnections(tsp);
441 lock_ObtainRead(&cm_serverLock);
442 cm_PutServerNoLock(tsp);
444 lock_ReleaseRead(&cm_serverLock);
447 static void cm_CheckServersMulti(afs_uint32 flags, cm_cell_t *cellp)
450 * The goal of this function is to probe simultaneously
451 * probe all of the up/down servers (vldb/file) as
452 * specified by flags in the minimum number of RPCs.
453 * Effectively that means use one multi_RXAFS_GetCapabilities()
454 * followed by possibly one multi_RXAFS_GetTime() and
455 * one multi_VL_ProbeServer().
457 * To make this work we must construct the list of vldb
458 * and file servers that are to be probed as well as the
459 * associated data structures.
462 int srvAddrCount = 0;
463 struct srvAddr **addrs = NULL;
464 cm_conn_t **conns = NULL;
465 struct rx_connection **rxconns = NULL;
467 afs_int32 i, nconns = 0, maxconns;
468 afs_int32 *conntimer, *results;
469 Capabilities *caps = NULL;
470 cm_server_t ** serversp, *tsp;
471 afs_uint32 isDown, wasDown;
477 maxconns = max(cm_numFileServers,cm_numVldbServers);
481 conns = (cm_conn_t **)malloc(maxconns * sizeof(cm_conn_t *));
482 rxconns = (struct rx_connection **)malloc(maxconns * sizeof(struct rx_connection *));
483 conntimer = (afs_int32 *)malloc(maxconns * sizeof (afs_int32));
484 results = (afs_int32 *)malloc(maxconns * sizeof (afs_int32));
485 serversp = (cm_server_t **)malloc(maxconns * sizeof(cm_server_t *));
486 caps = (Capabilities *)malloc(maxconns * sizeof(Capabilities));
488 memset(caps, 0, maxconns * sizeof(Capabilities));
490 if ((flags & CM_FLAG_CHECKFILESERVERS) ||
491 !(flags & (CM_FLAG_CHECKFILESERVERS|CM_FLAG_CHECKVLDBSERVERS)))
493 lock_ObtainRead(&cm_serverLock);
494 for (nconns=0, tsp = cm_serversAllFirstp;
495 tsp != NULL && nconns < maxconns;
496 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
497 if (tsp->type != CM_SERVER_FILE ||
498 tsp->cellp == NULL || /* SetPref only */
499 cellp && cellp != tsp->cellp)
502 cm_GetServerNoLock(tsp);
503 lock_ReleaseRead(&cm_serverLock);
505 lock_ObtainMutex(&tsp->mx);
506 isDown = tsp->flags & CM_SERVERFLAG_DOWN;
508 if ((tsp->flags & CM_SERVERFLAG_PINGING) ||
509 !((isDown && (flags & CM_FLAG_CHECKDOWNSERVERS)) ||
510 (!isDown && (flags & CM_FLAG_CHECKUPSERVERS)))) {
511 lock_ReleaseMutex(&tsp->mx);
512 lock_ObtainRead(&cm_serverLock);
513 cm_PutServerNoLock(tsp);
517 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_PINGING);
518 lock_ReleaseMutex(&tsp->mx);
520 serversp[nconns] = tsp;
521 code = cm_ConnByServer(tsp, cm_rootUserp, FALSE, &conns[nconns]);
523 lock_ObtainRead(&cm_serverLock);
524 cm_PutServerNoLock(tsp);
527 lock_ObtainRead(&cm_serverLock);
528 rxconns[nconns] = cm_GetRxConn(conns[nconns]);
529 if (conntimer[nconns] = (isDown ? 1 : 0))
530 rx_SetConnHardDeadTime(rxconns[nconns], 10);
534 lock_ReleaseRead(&cm_serverLock);
537 /* Perform the multi call */
539 multi_Rx(rxconns,nconns)
541 multi_RXAFS_GetCapabilities(&caps[multi_i]);
542 results[multi_i]=multi_error;
546 /* Process results of servers that support RXAFS_GetCapabilities */
547 for (i=0; i<nconns; i++) {
549 rx_SetConnHardDeadTime(rxconns[i], HardDeadtimeout);
550 rx_PutConnection(rxconns[i]);
551 cm_PutConn(conns[i]);
554 cm_GCConnections(tsp);
556 lock_ObtainMutex(&tsp->mx);
557 wasDown = tsp->flags & CM_SERVERFLAG_DOWN;
559 if (results[i] >= 0 || results[i] == RXGEN_OPCODE ||
560 results[i] == RX_CALL_BUSY) {
561 /* mark server as up */
562 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_DOWN);
565 /* we currently handle 32-bits of capabilities */
566 if (results[i] != RXGEN_OPCODE && results[i] != RX_CALL_BUSY &&
567 caps[i].Capabilities_len > 0) {
568 tsp->capabilities = caps[i].Capabilities_val[0];
569 xdr_free((xdrproc_t) xdr_Capabilities, &caps[i]);
570 caps[i].Capabilities_len = 0;
571 caps[i].Capabilities_val = 0;
573 tsp->capabilities = 0;
576 afs_inet_ntoa_r(tsp->addr.sin_addr.S_un.S_addr, hoststr);
577 osi_Log3(afsd_logp, "cm_MultiPingServer server %s (%s) is up with caps 0x%x",
578 osi_LogSaveString(afsd_logp, hoststr),
579 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
582 /* Now update the volume status if necessary */
584 cm_server_vols_t * tsrvp;
588 for (tsrvp = tsp->vols; tsrvp; tsrvp = tsrvp->nextp) {
589 for (i=0; i<NUM_SERVER_VOLS; i++) {
590 if (tsrvp->ids[i] != 0) {
593 lock_ReleaseMutex(&tsp->mx);
594 code = cm_FindVolumeByID(tsp->cellp, tsrvp->ids[i], cm_rootUserp,
595 &req, CM_GETVOL_FLAG_NO_LRU_UPDATE, &volp);
596 lock_ObtainMutex(&tsp->mx);
598 cm_UpdateVolumeStatus(volp, tsrvp->ids[i]);
607 /* mark server as down */
608 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
609 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_DOWN);
610 tsp->downTime = time(NULL);
612 if (code != VRESTARTING) {
613 lock_ReleaseMutex(&tsp->mx);
614 cm_ForceNewConnections(tsp);
615 lock_ObtainMutex(&tsp->mx);
617 afs_inet_ntoa_r(tsp->addr.sin_addr.S_un.S_addr, hoststr);
618 osi_Log3(afsd_logp, "cm_MultiPingServer server %s (%s) is down with caps 0x%x",
619 osi_LogSaveString(afsd_logp, hoststr),
620 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
623 /* Now update the volume status if necessary */
625 cm_server_vols_t * tsrvp;
629 for (tsrvp = tsp->vols; tsrvp; tsrvp = tsrvp->nextp) {
630 for (i=0; i<NUM_SERVER_VOLS; i++) {
631 if (tsrvp->ids[i] != 0) {
634 lock_ReleaseMutex(&tsp->mx);
635 code = cm_FindVolumeByID(tsp->cellp, tsrvp->ids[i], cm_rootUserp,
636 &req, CM_GETVOL_FLAG_NO_LRU_UPDATE, &volp);
637 lock_ObtainMutex(&tsp->mx);
639 cm_UpdateVolumeStatus(volp, tsrvp->ids[i]);
649 if (tsp->waitCount == 0)
650 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_PINGING);
652 osi_Wakeup((LONG_PTR)tsp);
654 lock_ReleaseMutex(&tsp->mx);
660 if ((flags & CM_FLAG_CHECKVLDBSERVERS) ||
661 !(flags & (CM_FLAG_CHECKFILESERVERS|CM_FLAG_CHECKVLDBSERVERS)))
663 lock_ObtainRead(&cm_serverLock);
664 for (nconns=0, tsp = cm_serversAllFirstp;
665 tsp != NULL && nconns < maxconns;
666 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
667 if (tsp->type != CM_SERVER_VLDB ||
668 tsp->cellp == NULL || /* SetPref only */
669 cellp && cellp != tsp->cellp)
672 cm_GetServerNoLock(tsp);
673 lock_ReleaseRead(&cm_serverLock);
675 lock_ObtainMutex(&tsp->mx);
676 isDown = tsp->flags & CM_SERVERFLAG_DOWN;
678 if ((tsp->flags & CM_SERVERFLAG_PINGING) ||
679 !((isDown && (flags & CM_FLAG_CHECKDOWNSERVERS)) ||
680 (!isDown && (flags & CM_FLAG_CHECKUPSERVERS)))) {
681 lock_ReleaseMutex(&tsp->mx);
682 lock_ObtainRead(&cm_serverLock);
683 cm_PutServerNoLock(tsp);
687 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_PINGING);
688 lock_ReleaseMutex(&tsp->mx);
690 serversp[nconns] = tsp;
691 code = cm_ConnByServer(tsp, cm_rootUserp, FALSE, &conns[nconns]);
693 lock_ObtainRead(&cm_serverLock);
694 cm_PutServerNoLock(tsp);
697 lock_ObtainRead(&cm_serverLock);
698 rxconns[nconns] = cm_GetRxConn(conns[nconns]);
699 conntimer[nconns] = (isDown ? 1 : 0);
701 rx_SetConnHardDeadTime(rxconns[nconns], 10);
705 lock_ReleaseRead(&cm_serverLock);
708 /* Perform the multi call */
710 multi_Rx(rxconns,nconns)
712 multi_VL_ProbeServer();
713 results[multi_i]=multi_error;
717 /* Process results of servers that support VL_ProbeServer */
718 for (i=0; i<nconns; i++) {
720 rx_SetConnHardDeadTime(rxconns[i], HardDeadtimeout);
721 rx_PutConnection(rxconns[i]);
722 cm_PutConn(conns[i]);
725 cm_GCConnections(tsp);
727 lock_ObtainMutex(&tsp->mx);
728 wasDown = tsp->flags & CM_SERVERFLAG_DOWN;
730 if (results[i] >= 0 || results[i] == RX_CALL_BUSY) {
731 /* mark server as up */
732 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_DOWN);
734 tsp->capabilities = 0;
736 afs_inet_ntoa_r(tsp->addr.sin_addr.S_un.S_addr, hoststr);
737 osi_Log3(afsd_logp, "cm_MultiPingServer server %s (%s) is up with caps 0x%x",
738 osi_LogSaveString(afsd_logp, hoststr),
739 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
744 /* mark server as down */
745 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
746 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_DOWN);
747 tsp->downTime = time(NULL);
749 if (code != VRESTARTING) {
750 lock_ReleaseMutex(&tsp->mx);
751 cm_ForceNewConnections(tsp);
752 lock_ObtainMutex(&tsp->mx);
754 afs_inet_ntoa_r(tsp->addr.sin_addr.S_un.S_addr, hoststr);
755 osi_Log3(afsd_logp, "cm_MultiPingServer server %s (%s) is down with caps 0x%x",
756 osi_LogSaveString(afsd_logp, hoststr),
757 tsp->type == CM_SERVER_VLDB ? "vldb" : "file",
763 if (tsp->waitCount == 0)
764 _InterlockedAnd(&tsp->flags, ~CM_SERVERFLAG_PINGING);
766 osi_Wakeup((LONG_PTR)tsp);
768 lock_ReleaseMutex(&tsp->mx);
782 void cm_CheckServers(afs_uint32 flags, cm_cell_t *cellp)
789 code = RegOpenKeyEx(HKEY_LOCAL_MACHINE, AFSREG_CLT_SVC_PARAM_SUBKEY,
790 0, KEY_QUERY_VALUE, &parmKey);
791 if (code == ERROR_SUCCESS) {
792 dummyLen = sizeof(multi);
793 code = RegQueryValueEx(parmKey, "MultiCheckServers", NULL, NULL,
794 (BYTE *) &multi, &dummyLen);
795 RegCloseKey (parmKey);
799 cm_CheckServersMulti(flags, cellp);
801 cm_CheckServersSingular(flags, cellp);
804 void cm_InitServer(void)
806 static osi_once_t once;
808 if (osi_Once(&once)) {
809 lock_InitializeRWLock(&cm_serverLock, "cm_serverLock", LOCK_HIERARCHY_SERVER_GLOBAL);
810 lock_InitializeRWLock(&cm_syscfgLock, "cm_syscfgLock", LOCK_HIERARCHY_SYSCFG_GLOBAL);
815 /* Protected by cm_syscfgLock (rw) */
816 int cm_noIPAddr; /* number of client network interfaces */
817 int cm_IPAddr[CM_MAXINTERFACE_ADDR]; /* client's IP address in host order */
818 int cm_SubnetMask[CM_MAXINTERFACE_ADDR];/* client's subnet mask in host order*/
819 int cm_NetMtu[CM_MAXINTERFACE_ADDR]; /* client's MTU sizes */
820 int cm_NetFlags[CM_MAXINTERFACE_ADDR]; /* network flags */
821 int cm_LanAdapterChangeDetected = 1;
823 void cm_SetLanAdapterChangeDetected(void)
825 lock_ObtainWrite(&cm_syscfgLock);
826 cm_LanAdapterChangeDetected = 1;
827 lock_ReleaseWrite(&cm_syscfgLock);
830 void cm_GetServer(cm_server_t *serverp)
832 lock_ObtainRead(&cm_serverLock);
833 InterlockedIncrement(&serverp->refCount);
834 lock_ReleaseRead(&cm_serverLock);
837 void cm_GetServerNoLock(cm_server_t *serverp)
839 InterlockedIncrement(&serverp->refCount);
842 void cm_PutServer(cm_server_t *serverp)
845 lock_ObtainRead(&cm_serverLock);
846 refCount = InterlockedDecrement(&serverp->refCount);
847 osi_assertx(refCount >= 0, "cm_server_t refCount underflow");
848 lock_ReleaseRead(&cm_serverLock);
851 void cm_PutServerNoLock(cm_server_t *serverp)
853 afs_int32 refCount = InterlockedDecrement(&serverp->refCount);
854 osi_assertx(refCount >= 0, "cm_server_t refCount underflow");
857 void cm_SetServerNo64Bit(cm_server_t * serverp, int no64bit)
859 lock_ObtainMutex(&serverp->mx);
861 _InterlockedOr(&serverp->flags, CM_SERVERFLAG_NO64BIT);
863 _InterlockedAnd(&serverp->flags, ~CM_SERVERFLAG_NO64BIT);
864 lock_ReleaseMutex(&serverp->mx);
867 void cm_SetServerNoInlineBulk(cm_server_t * serverp, int no)
869 lock_ObtainMutex(&serverp->mx);
871 _InterlockedOr(&serverp->flags, CM_SERVERFLAG_NOINLINEBULK);
873 _InterlockedAnd(&serverp->flags, ~CM_SERVERFLAG_NOINLINEBULK);
874 lock_ReleaseMutex(&serverp->mx);
877 void cm_SetServerIPRank(cm_server_t * serverp)
879 unsigned long serverAddr; /* in host byte order */
880 unsigned long myAddr, myNet, mySubnet;/* in host byte order */
881 unsigned long netMask;
885 lock_ObtainRead(&cm_syscfgLock);
886 if (cm_LanAdapterChangeDetected) {
887 lock_ConvertRToW(&cm_syscfgLock);
888 if (cm_LanAdapterChangeDetected) {
889 /* get network related info */
890 cm_noIPAddr = CM_MAXINTERFACE_ADDR;
891 code = syscfg_GetIFInfo(&cm_noIPAddr,
892 cm_IPAddr, cm_SubnetMask,
893 cm_NetMtu, cm_NetFlags);
894 cm_LanAdapterChangeDetected = 0;
896 lock_ConvertWToR(&cm_syscfgLock);
899 serverAddr = ntohl(serverp->addr.sin_addr.s_addr);
900 serverp->ipRank = CM_IPRANK_LOW; /* default settings */
902 for ( i=0; i < cm_noIPAddr; i++)
904 /* loop through all the client's IP address and compare
905 ** each of them against the server's IP address */
907 myAddr = cm_IPAddr[i];
908 if ( IN_CLASSA(myAddr) )
909 netMask = IN_CLASSA_NET;
910 else if ( IN_CLASSB(myAddr) )
911 netMask = IN_CLASSB_NET;
912 else if ( IN_CLASSC(myAddr) )
913 netMask = IN_CLASSC_NET;
917 myNet = myAddr & netMask;
918 mySubnet = myAddr & cm_SubnetMask[i];
920 if ( (serverAddr & netMask) == myNet )
922 if ( (serverAddr & cm_SubnetMask[i]) == mySubnet)
924 if ( serverAddr == myAddr ) {
925 serverp->ipRank = min(serverp->ipRank,
926 CM_IPRANK_TOP);/* same machine */
928 serverp->ipRank = min(serverp->ipRank,
929 CM_IPRANK_HI); /* same subnet */
932 serverp->ipRank = min(serverp->ipRank, CM_IPRANK_MED); /* same net */
935 } /* and of for loop */
936 lock_ReleaseRead(&cm_syscfgLock);
939 cm_server_t *cm_NewServer(struct sockaddr_in *socketp, int type, cm_cell_t *cellp, afsUUID *uuidp, afs_uint32 flags) {
943 osi_assertx(socketp->sin_family == AF_INET, "unexpected socket family");
945 lock_ObtainWrite(&cm_serverLock); /* get server lock */
946 tsp = cm_FindServer(socketp, type, TRUE);
948 /* we might have found a server created by set server prefs */
949 if (uuidp && !afs_uuid_is_nil(uuidp) &&
950 !(tsp->flags & CM_SERVERFLAG_UUID))
953 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
956 if (cellp != NULL && tsp->cellp == NULL) {
958 afs_inet_ntoa_r(tsp->addr.sin_addr.s_addr, hoststr);
959 osi_Log3(afsd_logp, "cm_NewServer assigning server %s to cell (%u) %s",
960 osi_LogSaveString(afsd_logp,hoststr),
962 osi_LogSaveString(afsd_logp,cellp->name));
964 else if (tsp->cellp != cellp) {
965 afs_inet_ntoa_r(tsp->addr.sin_addr.s_addr, hoststr);
967 "cm_NewServer found a server %s associated with two cells (%u) %s and (%u) %s",
968 osi_LogSaveString(afsd_logp,hoststr),
970 osi_LogSaveString(afsd_logp,tsp->cellp->name),
972 osi_LogSaveString(afsd_logp,cellp->name));
974 lock_ReleaseWrite(&cm_serverLock);
978 tsp = malloc(sizeof(*tsp));
980 memset(tsp, 0, sizeof(*tsp));
982 if (uuidp && !afs_uuid_is_nil(uuidp)) {
984 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
987 lock_InitializeMutex(&tsp->mx, "cm_server_t mutex", LOCK_HIERARCHY_SERVER);
988 tsp->addr = *socketp;
990 osi_QAddH((osi_queue_t **)&cm_serversAllFirstp,
991 (osi_queue_t **)&cm_serversAllLastp, &tsp->allq);
1002 if (cellp != NULL) {
1004 afs_inet_ntoa_r(tsp->addr.sin_addr.s_addr, hoststr);
1005 osi_Log3(afsd_logp, "cm_NewServer new server %s in cell (%u) %s",
1006 osi_LogSaveString(afsd_logp,hoststr),
1008 osi_LogSaveString(afsd_logp,cellp->name));
1011 lock_ReleaseWrite(&cm_serverLock); /* release server lock */
1014 if (!(flags & CM_FLAG_NOPROBE)) {
1015 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_DOWN); /* assume down; ping will mark up if available */
1016 lock_ObtainMutex(&tsp->mx);
1018 lock_ReleaseMutex(&tsp->mx);
1019 cm_PingServer(tsp); /* Obtain Capabilities and check up/down state */
1022 pthread_attr_t tattr;
1025 /* Probe the server in the background to determine if it is up or down */
1026 pthread_attr_init(&tattr);
1027 pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
1029 lock_ObtainMutex(&tsp->mx);
1031 lock_ReleaseMutex(&tsp->mx);
1032 pstatus = pthread_create(&phandle, &tattr, cm_PingServer, tsp);
1034 pthread_attr_destroy(&tattr);
1041 cm_FindServerByIP(afs_uint32 ipaddr, unsigned short port, int type, int locked)
1046 lock_ObtainRead(&cm_serverLock);
1048 for (tsp = cm_serversAllFirstp;
1050 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
1051 if (tsp->type == type &&
1052 tsp->addr.sin_addr.S_un.S_addr == ipaddr &&
1053 (tsp->addr.sin_port == port || tsp->addr.sin_port == 0))
1057 /* bump ref count if we found the server */
1059 cm_GetServerNoLock(tsp);
1062 lock_ReleaseRead(&cm_serverLock);
1068 cm_FindServerByUuid(afsUUID *serverUuid, int type, int locked)
1073 lock_ObtainRead(&cm_serverLock);
1075 for (tsp = cm_serversAllFirstp;
1077 tsp = (cm_server_t *)osi_QNext(&tsp->allq)) {
1078 if (tsp->type == type && afs_uuid_equal(&tsp->uuid, serverUuid))
1082 /* bump ref count if we found the server */
1084 cm_GetServerNoLock(tsp);
1087 lock_ReleaseRead(&cm_serverLock);
1092 /* find a server based on its properties */
1093 cm_server_t *cm_FindServer(struct sockaddr_in *addrp, int type, int locked)
1095 osi_assertx(addrp->sin_family == AF_INET, "unexpected socket value");
1097 return cm_FindServerByIP(addrp->sin_addr.s_addr, addrp->sin_port, type, locked);
1100 cm_server_vols_t *cm_NewServerVols(void) {
1101 cm_server_vols_t *tsvp;
1103 tsvp = malloc(sizeof(*tsvp));
1105 memset(tsvp, 0, sizeof(*tsvp));
1111 * cm_NewServerRef() returns with the allocated cm_serverRef_t
1112 * with a refCount of 1.
1114 cm_serverRef_t *cm_NewServerRef(cm_server_t *serverp, afs_uint32 volID)
1116 cm_serverRef_t *tsrp;
1117 cm_server_vols_t **tsrvpp = NULL;
1118 afs_uint32 *slotp = NULL;
1121 cm_GetServer(serverp);
1122 tsrp = malloc(sizeof(*tsrp));
1123 tsrp->server = serverp;
1124 tsrp->status = srv_not_busy;
1126 tsrp->volID = volID;
1129 /* if we have a non-zero volID, we need to add it to the list
1130 * of volumes maintained by the server. There are two phases:
1131 * (1) see if the volID is already in the list and (2) insert
1132 * it into the first empty slot if it is not.
1135 lock_ObtainMutex(&serverp->mx);
1137 tsrvpp = &serverp->vols;
1141 for (i=0; i<NUM_SERVER_VOLS; i++) {
1142 if ((*tsrvpp)->ids[i] == volID) {
1145 } else if (!slotp && (*tsrvpp)->ids[i] == 0) {
1146 slotp = &(*tsrvpp)->ids[i];
1153 tsrvpp = &(*tsrvpp)->nextp;
1160 /* if we didn't find an empty slot in a current
1161 * page we must need a new page */
1162 *tsrvpp = cm_NewServerVols();
1164 (*tsrvpp)->ids[0] = volID;
1168 lock_ReleaseMutex(&serverp->mx);
1174 void cm_GetServerRef(cm_serverRef_t *tsrp, int locked)
1179 lock_ObtainRead(&cm_serverLock);
1180 refCount = InterlockedIncrement(&tsrp->refCount);
1182 lock_ReleaseRead(&cm_serverLock);
1185 afs_int32 cm_PutServerRef(cm_serverRef_t *tsrp, int locked)
1190 lock_ObtainRead(&cm_serverLock);
1191 refCount = InterlockedDecrement(&tsrp->refCount);
1192 osi_assertx(refCount >= 0, "cm_serverRef_t refCount underflow");
1195 lock_ReleaseRead(&cm_serverLock);
1201 cm_ServerListSize(cm_serverRef_t* serversp)
1203 afs_uint32 count = 0;
1204 cm_serverRef_t *tsrp;
1206 lock_ObtainRead(&cm_serverLock);
1207 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
1208 if (tsrp->status == srv_deleted)
1212 lock_ReleaseRead(&cm_serverLock);
1216 LONG_PTR cm_ChecksumServerList(cm_serverRef_t *serversp)
1220 cm_serverRef_t *tsrp;
1222 lock_ObtainRead(&cm_serverLock);
1223 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
1224 if (tsrp->status == srv_deleted)
1230 sum ^= (LONG_PTR) tsrp->server;
1233 lock_ReleaseRead(&cm_serverLock);
1238 ** Insert a server into the server list keeping the list sorted in
1239 ** ascending order of ipRank.
1241 ** The refCount of the cm_serverRef_t is not altered.
1243 void cm_InsertServerList(cm_serverRef_t** list, cm_serverRef_t* element)
1245 cm_serverRef_t *current;
1246 unsigned short rank;
1248 lock_ObtainWrite(&cm_serverLock);
1250 * Since we are grabbing the serverLock exclusively remove any
1251 * deleted serverRef objects with a zero refcount before
1252 * inserting the new item.
1255 cm_serverRef_t **currentp = list;
1256 cm_serverRef_t **nextp = NULL;
1257 cm_serverRef_t * next = NULL;
1258 cm_server_t * serverp = NULL;
1260 for (currentp = list; *currentp; currentp = nextp)
1262 nextp = &(*currentp)->next;
1263 /* obtain a refcnt on next in case cm_serverLock is dropped */
1265 cm_GetServerRef(*nextp, TRUE);
1266 if ((*currentp)->refCount == 0 &&
1267 (*currentp)->status == srv_deleted) {
1270 if ((*currentp)->volID)
1271 cm_RemoveVolumeFromServer((*currentp)->server, (*currentp)->volID);
1272 serverp = (*currentp)->server;
1275 /* cm_FreeServer will drop cm_serverLock if serverp->refCount == 0 */
1276 cm_FreeServer(serverp);
1278 /* drop the next refcnt obtained above. */
1280 cm_PutServerRef(*nextp, TRUE);
1284 /* insertion into empty list or at the beginning of the list */
1287 element->next = NULL;
1293 * Now that deleted entries have been removed and we know that the
1294 * list was not empty, look for duplicates. If the element we are
1295 * inserting already exists, discard it.
1297 for ( current = *list; current; current = current->next)
1299 cm_server_t * server1 = current->server;
1300 cm_server_t * server2 = element->server;
1302 if (current->status == srv_deleted)
1305 if (server1->type != server2->type)
1308 if (server1->addr.sin_addr.s_addr != server2->addr.sin_addr.s_addr)
1311 if ((server1->flags & CM_SERVERFLAG_UUID) != (server2->flags & CM_SERVERFLAG_UUID))
1314 if ((server1->flags & CM_SERVERFLAG_UUID) &&
1315 !afs_uuid_equal(&server1->uuid, &server2->uuid))
1318 /* we must have a match, discard the new element */
1323 rank = element->server->activeRank;
1325 /* insertion at the beginning of the list */
1326 if ((*list)->server->activeRank > rank)
1328 element->next = *list;
1333 /* find appropriate place to insert */
1334 for ( current = *list; current->next; current = current->next)
1336 if ( current->next->server->activeRank > rank )
1339 element->next = current->next;
1340 current->next = element;
1343 lock_ReleaseWrite(&cm_serverLock);
1346 ** Re-sort the server list with the modified rank
1347 ** returns 0 if element was changed successfully.
1348 ** returns 1 if list remained unchanged.
1350 long cm_ChangeRankServer(cm_serverRef_t** list, cm_server_t* server)
1352 cm_serverRef_t **current;
1353 cm_serverRef_t *element;
1355 lock_ObtainWrite(&cm_serverLock);
1359 /* if there is max of one element in the list, nothing to sort */
1360 if ( (!*current) || !((*current)->next) ) {
1361 lock_ReleaseWrite(&cm_serverLock);
1362 return 1; /* list unchanged: return success */
1365 /* if the server is on the list, delete it from list */
1368 if ( (*current)->server == server)
1370 element = (*current);
1371 *current = element->next; /* delete it */
1374 current = & ( (*current)->next);
1376 lock_ReleaseWrite(&cm_serverLock);
1378 /* if this volume is not replicated on this server */
1380 return 1; /* server is not on list */
1382 /* re-insert deleted element into the list with modified rank*/
1383 cm_InsertServerList(list, element);
1388 ** If there are more than one server on the list and the first n servers on
1389 ** the list have the same rank( n>1), then randomise among the first n servers.
1391 void cm_RandomizeServer(cm_serverRef_t** list)
1394 cm_serverRef_t* tsrp, *lastTsrp;
1395 unsigned short lowestRank;
1397 lock_ObtainWrite(&cm_serverLock);
1400 /* an empty list or a list with only one element */
1401 if ( !tsrp || ! tsrp->next ) {
1402 lock_ReleaseWrite(&cm_serverLock);
1406 /* count the number of servers with the lowest rank */
1407 lowestRank = tsrp->server->activeRank;
1408 for ( count=1, tsrp=tsrp->next; tsrp; tsrp=tsrp->next)
1410 if ( tsrp->server->activeRank != lowestRank)
1416 /* if there is only one server with the lowest rank, we are done */
1418 lock_ReleaseWrite(&cm_serverLock);
1422 picked = rand() % count;
1424 lock_ReleaseWrite(&cm_serverLock);
1429 while (--picked >= 0)
1434 lastTsrp->next = tsrp->next; /* delete random element from list*/
1435 tsrp->next = *list; /* insert element at the beginning of list */
1437 lock_ReleaseWrite(&cm_serverLock);
1440 /* call cm_FreeServer while holding a write lock on cm_serverLock */
1441 void cm_FreeServer(cm_server_t* serverp)
1443 cm_server_vols_t * tsrvp, *nextp;
1446 cm_PutServerNoLock(serverp);
1447 if (serverp->refCount == 0)
1450 * we need to check to ensure that all of the connections
1451 * for this server have a 0 refCount; otherwise, they will
1452 * not be garbage collected
1454 * must drop the cm_serverLock because cm_GCConnections
1455 * obtains the cm_connLock and that comes first in the
1458 lock_ReleaseWrite(&cm_serverLock);
1459 cm_GCConnections(serverp); /* connsp */
1460 lock_ObtainWrite(&cm_serverLock);
1465 * Once we have the cm_serverLock locked check to make
1466 * sure the refCount is still zero before removing the
1469 if (serverp->refCount == 0) {
1470 if (!(serverp->flags & CM_SERVERFLAG_PREF_SET)) {
1471 osi_QRemoveHT((osi_queue_t **)&cm_serversAllFirstp,
1472 (osi_queue_t **)&cm_serversAllLastp,
1475 switch (serverp->type) {
1476 case CM_SERVER_VLDB:
1477 cm_numVldbServers--;
1479 case CM_SERVER_FILE:
1480 cm_numFileServers--;
1484 lock_FinalizeMutex(&serverp->mx);
1486 /* free the volid list */
1487 for ( tsrvp = serverp->vols; tsrvp; tsrvp = nextp) {
1488 nextp = tsrvp->nextp;
1497 /* Called with cm_serverLock write locked */
1498 void cm_RemoveVolumeFromServer(cm_server_t * serverp, afs_uint32 volID)
1500 cm_server_vols_t * tsrvp;
1506 for (tsrvp = serverp->vols; tsrvp; tsrvp = tsrvp->nextp) {
1507 for (i=0; i<NUM_SERVER_VOLS; i++) {
1508 if (tsrvp->ids[i] == volID) {
1516 int cm_IsServerListEmpty(cm_serverRef_t *serversp)
1518 cm_serverRef_t *tsrp;
1521 if (serversp == NULL)
1522 return CM_ERROR_EMPTY;
1524 lock_ObtainRead(&cm_serverLock);
1525 for (tsrp = serversp; tsrp; tsrp=tsrp->next) {
1526 if (tsrp->status == srv_deleted)
1531 lock_ReleaseRead(&cm_serverLock);
1533 return ( allDeleted ? CM_ERROR_EMPTY : 0 );
1536 void cm_FreeServerList(cm_serverRef_t** list, afs_uint32 flags)
1538 cm_serverRef_t **current;
1539 cm_serverRef_t **nextp;
1540 cm_serverRef_t * next;
1541 cm_server_t * serverp;
1544 lock_ObtainWrite(&cm_serverLock);
1554 nextp = &(*current)->next;
1555 /* obtain a refcnt on next in case cm_serverLock is dropped */
1557 cm_GetServerRef(*nextp, TRUE);
1558 refCount = cm_PutServerRef(*current, TRUE);
1559 if (refCount == 0) {
1562 if ((*current)->volID)
1563 cm_RemoveVolumeFromServer((*current)->server, (*current)->volID);
1564 serverp = (*current)->server;
1567 /* cm_FreeServer will drop cm_serverLock if serverp->refCount == 0 */
1568 cm_FreeServer(serverp);
1570 if (flags & CM_FREESERVERLIST_DELETE) {
1571 (*current)->status = srv_deleted;
1572 if ((*current)->volID)
1573 cm_RemoveVolumeFromServer((*current)->server, (*current)->volID);
1577 /* drop the next refcnt obtained above. */
1579 cm_PutServerRef(*current, TRUE);
1584 lock_ReleaseWrite(&cm_serverLock);
1587 /* dump all servers to a file.
1588 * cookie is used to identify this batch for easy parsing,
1589 * and it a string provided by a caller
1591 int cm_DumpServers(FILE *outputFile, char *cookie, int lock)
1600 lock_ObtainRead(&cm_serverLock);
1603 "%s - dumping servers - cm_numFileServers=%d, cm_numVldbServers=%d\r\n",
1604 cookie, cm_numFileServers, cm_numVldbServers);
1605 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1607 for (tsp = cm_serversAllFirstp;
1609 tsp = (cm_server_t *)osi_QNext(&tsp->allq))
1614 switch (tsp->type) {
1615 case CM_SERVER_VLDB:
1618 case CM_SERVER_FILE:
1625 afsUUID_to_string(&tsp->uuid, uuidstr, sizeof(uuidstr));
1626 afs_inet_ntoa_r(tsp->addr.sin_addr.s_addr, hoststr);
1627 down = ctime(&tsp->downTime);
1628 down[strlen(down)-1] = '\0';
1631 "%s - tsp=0x%p cell=%s addr=%-15s port=%u uuid=%s type=%s caps=0x%x "
1632 "flags=0x%x waitCount=%u rank=%u downTime=\"%s\" refCount=%u\r\n",
1633 cookie, tsp, tsp->cellp ? tsp->cellp->name : "", hoststr,
1634 ntohs(tsp->addr.sin_port), uuidstr, type,
1635 tsp->capabilities, tsp->flags, tsp->waitCount, tsp->activeRank,
1636 (tsp->flags & CM_SERVERFLAG_DOWN) ? "down" : "up",
1638 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1640 sprintf(output, "%s - Done dumping servers.\r\n", cookie);
1641 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1644 lock_ReleaseRead(&cm_serverLock);
1650 * Determine if two servers are in fact the same.
1652 * Returns 1 if they match, 0 if they do not
1654 int cm_ServerEqual(cm_server_t *srv1, cm_server_t *srv2)
1658 if (srv1 == NULL || srv2 == NULL)
1664 if (srv1->flags & CM_SERVERFLAG_UUID) {
1665 if (!(srv2->flags & CM_SERVERFLAG_UUID))
1668 /* Both support UUID */
1669 if (UuidEqual((UUID *)&srv1->uuid, (UUID *)&srv2->uuid, &status))
1672 if (srv2->flags & CM_SERVERFLAG_UUID)
1675 /* Neither support UUID so perform an addr/port comparison */
1676 if ( srv1->addr.sin_family == srv2->addr.sin_family &&
1677 srv1->addr.sin_addr.s_addr == srv2->addr.sin_addr.s_addr &&
1678 srv1->addr.sin_port == srv2->addr.sin_port )