/*
* 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
* afsi_SetServerIPRank
* afs_GetServer
* afs_ActivateServer
- *
+ *
*
* Local:
* HaveCallBacksFrom
* CheckVLServer
* afs_SortOneServer
* afs_SetServerPrefs
- *
+ *
*/
#include <afsconfig.h>
#include "afs/param.h"
-RCSID
- ("$Header$");
#include "afs/stds.h"
#include "afs/sysincludes.h" /* Standard vendor system headers */
#ifdef AFS_SGI62_ENV
#include "h/hashing.h"
#endif
-#if !defined(AFS_HPUX110_ENV) && !defined(AFS_LINUX20_ENV) && !defined(AFS_DARWIN60_ENV)
+#if !defined(AFS_HPUX110_ENV) && !defined(AFS_LINUX20_ENV) && !defined(AFS_DARWIN_ENV)
#include <netinet/in_var.h>
#endif /* AFS_HPUX110_ENV */
-#ifdef AFS_DARWIN60_ENV
+#ifdef AFS_DARWIN_ENV
#include <net/if_var.h>
#endif
#endif /* !defined(UKERNEL) */
#include "afs/afs_stats.h" /* afs statistics */
#include "rx/rx_multi.h"
-#if defined(AFS_SUN56_ENV)
+#if defined(AFS_SUN5_ENV)
#include <inet/led.h>
#include <inet/common.h>
-#if defined(AFS_SUN58_ENV)
-# include <netinet/ip6.h>
-# define ipif_local_addr ipif_lcl_addr
-# ifndef V4_PART_OF_V6
-# define V4_PART_OF_V6(v6) v6.s6_addr32[3]
-# endif
-# endif
+#include <netinet/ip6.h>
+#define ipif_local_addr ipif_lcl_addr
+#ifndef V4_PART_OF_V6
+# define V4_PART_OF_V6(v6) v6.s6_addr32[3]
+#endif
#include <inet/ip.h>
#endif
/* Exported variables */
afs_rwlock_t afs_xserver; /* allocation lock for servers */
-struct server *afs_setTimeHost = 0; /* last host we used for time */
struct server *afs_servers[NSERVERS]; /* Hashed by server`s uuid & 1st ip */
afs_rwlock_t afs_xsrvAddr; /* allocation lock for srvAddrs */
struct srvAddr *afs_srvAddrs[NSERVERS]; /* Hashed by server's ip */
void
afs_MarkServerUpOrDown(struct srvAddr *sa, int a_isDown)
{
- register struct server *a_serverP = sa->server;
- register struct srvAddr *sap;
+ struct server *a_serverP = sa->server;
+ struct srvAddr *sap;
osi_timeval_t currTime, *currTimeP; /*Current time */
afs_int32 downTime; /*Computed downtime, in seconds */
struct afs_stats_SrvUpDownInfo *upDownP; /*Ptr to up/down info record */
return;
}
}
- /*
+ /*
* All ips are down we treat the whole server down
*/
a_serverP->flags |= SRVR_ISDOWN;
- /*
- * If this was our time server, search for another time server
- */
- if (a_serverP == afs_setTimeHost)
- afs_setTimeHost = 0;
} else {
sa->sa_flags &= ~SRVADDR_ISDOWN;
/* If any ips are up, the server is also marked up */
} /*MarkServerUpOrDown */
-void
-afs_ServerDown(struct srvAddr *sa)
+afs_int32
+afs_ServerDown(struct srvAddr *sa, int code)
{
- register struct server *aserver = sa->server;
+ struct server *aserver = sa->server;
AFS_STATCNT(ServerDown);
if (aserver->flags & SRVR_ISDOWN || sa->sa_flags & SRVADDR_ISDOWN)
- return;
+ return 0;
afs_MarkServerUpOrDown(sa, SRVR_ISDOWN);
if (sa->sa_portal == aserver->cell->vlport)
print_internet_address
- ("afs: Lost contact with volume location server ", sa, "", 1);
+ ("afs: Lost contact with volume location server ", sa, "", 1, code);
else
print_internet_address("afs: Lost contact with file server ", sa, "",
- 1);
-
+ 1, code);
+ return 1;
} /*ServerDown */
int
afs_HaveCallBacksFrom(struct server *aserver)
{
- register afs_int32 now;
- register int i;
- register struct vcache *tvc;
+ afs_int32 now;
+ int i;
+ struct vcache *tvc;
AFS_STATCNT(HaveCallBacksFrom);
now = osi_Time(); /* for checking for expired callbacks */
* from the required host
*/
if (aserver == tvc->callback && tvc->cbExpires >= now
- && ((tvc->states & CRO) == 0))
+ && ((tvc->f.states & CRO) == 0))
return 1;
}
}
static void
-CheckVLServer(register struct srvAddr *sa, struct vrequest *areq)
+CheckVLServer(struct srvAddr *sa, struct vrequest *areq)
{
- register struct server *aserver = sa->server;
- register struct conn *tc;
- register afs_int32 code;
+ struct server *aserver = sa->server;
+ struct afs_conn *tc;
+ afs_int32 code;
+ struct rx_connection *rxconn;
AFS_STATCNT(CheckVLServer);
/* Ping dead servers to see if they're back */
return; /* can't do much */
tc = afs_ConnByHost(aserver, aserver->cell->vlport,
- aserver->cell->cellNum, areq, 1, SHARED_LOCK);
+ aserver->cell->cellNum, areq, 1, SHARED_LOCK, &rxconn);
if (!tc)
return;
- rx_SetConnDeadTime(tc->id, 3);
+ rx_SetConnDeadTime(rxconn, 3);
RX_AFS_GUNLOCK();
- code = VL_ProbeServer(tc->id);
+ code = VL_ProbeServer(rxconn);
RX_AFS_GLOCK();
- rx_SetConnDeadTime(tc->id, afs_rx_deadtime);
- afs_PutConn(tc, SHARED_LOCK);
+ rx_SetConnDeadTime(rxconn, afs_rx_deadtime);
+ afs_PutConn(tc, rxconn, SHARED_LOCK);
/*
* If probe worked, or probe call not yet defined (for compatibility
* with old vlsevers), then we treat this server as running again
*/
if (code == 0 || (code <= -450 && code >= -470)) {
- if (tc->srvr == sa) {
+ if (tc->parent->srvr == sa) {
afs_MarkServerUpOrDown(sa, 0);
print_internet_address("afs: volume location server ", sa,
- " is back up", 2);
+ " is back up", 2, code);
}
}
afs_stats_cmperf.fs_UpDown[0].sumOfRecordAges = 0;
afs_stats_cmperf.fs_UpDown[0].ageOfYoungestRecord = 0;
afs_stats_cmperf.fs_UpDown[0].ageOfOldestRecord = 0;
- memset((char *)afs_stats_cmperf.fs_UpDown[0].downIncidents, 0,
+ memset(afs_stats_cmperf.fs_UpDown[0].downIncidents, 0,
AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS * sizeof(afs_int32));
afs_stats_cmperf.fs_UpDown[1].sumOfRecordAges = 0;
afs_stats_cmperf.fs_UpDown[1].ageOfYoungestRecord = 0;
afs_stats_cmperf.fs_UpDown[1].ageOfOldestRecord = 0;
- memset((char *)afs_stats_cmperf.fs_UpDown[1].downIncidents, 0,
+ memset(afs_stats_cmperf.fs_UpDown[1].downIncidents, 0,
AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS * sizeof(afs_int32));
afs_stats_cmperf.vl_UpDown[0].sumOfRecordAges = 0;
afs_stats_cmperf.vl_UpDown[0].ageOfYoungestRecord = 0;
afs_stats_cmperf.vl_UpDown[0].ageOfOldestRecord = 0;
- memset((char *)afs_stats_cmperf.vl_UpDown[0].downIncidents, 0,
+ memset(afs_stats_cmperf.vl_UpDown[0].downIncidents, 0,
AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS * sizeof(afs_int32));
afs_stats_cmperf.vl_UpDown[1].sumOfRecordAges = 0;
afs_stats_cmperf.vl_UpDown[1].ageOfYoungestRecord = 0;
afs_stats_cmperf.vl_UpDown[1].ageOfOldestRecord = 0;
- memset((char *)afs_stats_cmperf.vl_UpDown[1].downIncidents, 0,
+ memset(afs_stats_cmperf.vl_UpDown[1].downIncidents, 0,
AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS * sizeof(afs_int32));
/*
/*
* Any further tallying for this record will only be done if it has
- * been activated.
+ * been activated.
*/
if ((currSrvP->flags & AFS_SERVER_FLAG_ACTIVATED)
&& currSrvP->addr && currSrvP->cell) {
} /*afs_CountServers */
+void
+ForceAllNewConnections(void)
+{
+ int srvAddrCount;
+ struct srvAddr **addrs;
+ struct srvAddr *sa;
+ afs_int32 i, j;
+
+ ObtainReadLock(&afs_xserver); /* Necessary? */
+ ObtainReadLock(&afs_xsrvAddr);
+
+ srvAddrCount = 0;
+ for (i = 0; i < NSERVERS; i++) {
+ for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) {
+ srvAddrCount++;
+ }
+ }
+
+ addrs = afs_osi_Alloc(srvAddrCount * sizeof(*addrs));
+ osi_Assert(addrs != NULL);
+ j = 0;
+ for (i = 0; i < NSERVERS; i++) {
+ for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) {
+ if (j >= srvAddrCount)
+ break;
+ addrs[j++] = sa;
+ }
+ }
+
+ ReleaseReadLock(&afs_xsrvAddr);
+ ReleaseReadLock(&afs_xserver);
+ for (i = 0; i < j; i++) {
+ sa = addrs[i];
+ ForceNewConnections(sa);
+ }
+}
+
+static void
+CkSrv_MarkUpDown(struct afs_conn **conns, int nconns, afs_int32 *results)
+{
+ struct srvAddr *sa;
+ struct afs_conn *tc;
+ afs_int32 i;
+
+ for(i = 0; i < nconns; i++){
+ tc = conns[i];
+ sa = tc->parent->srvr;
+
+ if (( results[i] >= 0 ) && (sa->sa_flags & SRVADDR_ISDOWN) &&
+ (tc->parent->srvr == sa)) {
+ /* server back up */
+ print_internet_address("afs: file server ", sa, " is back up", 2,
+ results[i]);
+
+ ObtainWriteLock(&afs_xserver, 244);
+ ObtainWriteLock(&afs_xsrvAddr, 245);
+ afs_MarkServerUpOrDown(sa, 0);
+ ReleaseWriteLock(&afs_xsrvAddr);
+ ReleaseWriteLock(&afs_xserver);
+
+ if (afs_waitForeverCount) {
+ afs_osi_Wakeup(&afs_waitForever);
+ }
+ } else {
+ if (results[i] < 0) {
+ /* server crashed */
+ afs_ServerDown(sa, results[i]);
+ ForceNewConnections(sa); /* multi homed clients */
+ }
+ }
+ }
+}
+
+void
+CkSrv_GetCaps(int nconns, struct rx_connection **rxconns,
+ struct afs_conn **conns)
+{
+ Capabilities *caps;
+ afs_int32 *results;
+ afs_int32 i;
+ struct server *ts;
+
+ caps = afs_osi_Alloc(nconns * sizeof (Capabilities));
+ osi_Assert(caps != NULL);
+ memset(caps, 0, nconns * sizeof(Capabilities));
+
+ results = afs_osi_Alloc(nconns * sizeof (afs_int32));
+ osi_Assert(results != NULL);
+
+ AFS_GUNLOCK();
+ multi_Rx(rxconns,nconns)
+ {
+ multi_RXAFS_GetCapabilities(&caps[multi_i]);
+ results[multi_i] = multi_error;
+ } multi_End;
+ AFS_GLOCK();
+
+ for ( i = 0 ; i < nconns ; i++ ) {
+ ts = conns[i]->parent->srvr->server;
+ if ( !ts )
+ continue;
+ ts->capabilities = 0;
+ ts->flags |= SCAPS_KNOWN;
+ if ( results[i] == RXGEN_OPCODE ) {
+ /* Mark server as up - it responded */
+ results[i] = 0;
+ continue;
+ }
+ if ( results[i] >= 0 )
+ /* we currently handle 32-bits of capabilities */
+ if (caps[i].Capabilities_len > 0) {
+ ts->capabilities = caps[i].Capabilities_val[0];
+ xdr_free((xdrproc_t)xdr_Capabilities, &caps[i]);
+ caps[i].Capabilities_val = NULL;
+ caps[i].Capabilities_len = 0;
+ }
+ }
+ CkSrv_MarkUpDown(conns, nconns, results);
+
+ afs_osi_Free(caps, nconns * sizeof(Capabilities));
+ afs_osi_Free(results, nconns * sizeof(afs_int32));
+}
+
/* check down servers (if adown), or running servers (if !adown) */
void
afs_CheckServers(int adown, struct cell *acellp)
{
+ afs_LoopServers(adown?AFS_LS_DOWN:AFS_LS_UP, acellp, 1, CkSrv_GetCaps, NULL);
+}
+
+/* adown: AFS_LS_UP - check only up
+ * AFS_LS_DOWN - check only down.
+ * AFS_LS_ALL - check all */
+void
+afs_LoopServers(int adown, struct cell *acellp, int vlalso,
+ void (*func1) (int nservers, struct rx_connection **rxconns,
+ struct afs_conn **conns),
+ void (*func2) (int nservers, struct rx_connection **rxconns,
+ struct afs_conn **conns))
+{
struct vrequest treq;
struct server *ts;
struct srvAddr *sa;
- struct conn *tc;
+ struct afs_conn *tc = NULL;
afs_int32 i, j;
afs_int32 code;
- afs_int32 start, end = 0, delta;
- osi_timeval_t tv;
struct unixuser *tu;
- char tbuffer[CVBS];
int srvAddrCount;
struct srvAddr **addrs;
- struct conn **conns;
+ struct afs_conn **conns;
int nconns;
- struct rx_connection **rxconns;
- afs_int32 *conntimer, *deltas, *results;
+ struct rx_connection **rxconns;
+ afs_int32 *conntimer;
AFS_STATCNT(afs_CheckServers);
- conns = (struct conn **)0;
+ /*
+ * No sense in doing the server checks if we are running in disconnected
+ * mode
+ */
+ if (AFS_IS_DISCONNECTED)
+ return;
+
+ conns = (struct afs_conn **)0;
rxconns = (struct rx_connection **) 0;
conntimer = 0;
nconns = 0;
}
addrs = afs_osi_Alloc(srvAddrCount * sizeof(*addrs));
+ osi_Assert(addrs != NULL);
j = 0;
for (i = 0; i < NSERVERS; i++) {
for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) {
ReleaseReadLock(&afs_xsrvAddr);
ReleaseReadLock(&afs_xserver);
- conns = (struct conn **)afs_osi_Alloc(j * sizeof(struct conn *));
- rxconns = (struct rx_connection **)afs_osi_Alloc(j * sizeof(struct rx_connection *));
- conntimer = (afs_int32 *)afs_osi_Alloc(j * sizeof (afs_int32));
- deltas = (afs_int32 *)afs_osi_Alloc(j * sizeof (afs_int32));
- results = (afs_int32 *)afs_osi_Alloc(j * sizeof (afs_int32));
+ conns = afs_osi_Alloc(j * sizeof(struct afs_conn *));
+ osi_Assert(conns != NULL);
+ rxconns = afs_osi_Alloc(j * sizeof(struct rx_connection *));
+ osi_Assert(rxconns != NULL);
+ conntimer = afs_osi_Alloc(j * sizeof (afs_int32));
+ osi_Assert(conntimer != NULL);
for (i = 0; i < j; i++) {
- deltas[i] = 0;
+ struct rx_connection *rxconn;
sa = addrs[i];
ts = sa->server;
if (!ts)
if (acellp && acellp != ts->cell)
continue;
- if ((!adown && (sa->sa_flags & SRVADDR_ISDOWN))
- || (adown && !(sa->sa_flags & SRVADDR_ISDOWN)))
+ if (((adown==AFS_LS_DOWN) && !(sa->sa_flags & SRVADDR_ISDOWN))
+ || ((adown==AFS_LS_UP) && (sa->sa_flags & SRVADDR_ISDOWN)))
continue;
/* check vlserver with special code */
if (sa->sa_portal == AFS_VLPORT) {
- CheckVLServer(sa, &treq);
+ if (vlalso)
+ CheckVLServer(sa, &treq);
continue;
}
/* get a connection, even if host is down; bumps conn ref count */
tu = afs_GetUser(treq.uid, ts->cell->cellNum, SHARED_LOCK);
tc = afs_ConnBySA(sa, ts->cell->fsport, ts->cell->cellNum, tu,
- 1 /*force */ , 1 /*create */ , SHARED_LOCK);
+ 1 /*force */ , 1 /*create */ , SHARED_LOCK, &rxconn);
afs_PutUser(tu, SHARED_LOCK);
if (!tc)
continue;
- if ((sa->sa_flags & SRVADDR_ISDOWN) || afs_HaveCallBacksFrom(sa->server)
- || (tc->srvr->server == afs_setTimeHost)) {
- conns[nconns]=tc;
- rxconns[nconns]=tc->id;
+ if ((sa->sa_flags & SRVADDR_ISDOWN) || afs_HaveCallBacksFrom(sa->server)) {
+ conns[nconns]=tc;
+ rxconns[nconns]=rxconn;
if (sa->sa_flags & SRVADDR_ISDOWN) {
- rx_SetConnDeadTime(tc->id, 3);
+ rx_SetConnDeadTime(rxconn, 3);
conntimer[nconns]=1;
} else {
conntimer[nconns]=0;
}
nconns++;
- }
+ } else /* not holding, kill ref */
+ afs_PutConn(tc, rxconn, SHARED_LOCK);
} /* Outer loop over addrs */
- start = osi_Time(); /* time the gettimeofday call */
- AFS_GUNLOCK();
- multi_Rx(rxconns,nconns)
- {
- tv.tv_sec = tv.tv_usec = 0;
- multi_RXAFS_GetTime(&tv.tv_sec, &tv.tv_usec);
- tc = conns[multi_i];
- sa = tc->srvr;
- if (conntimer[multi_i] == 1)
- rx_SetConnDeadTime(tc->id, afs_rx_deadtime);
- end = osi_Time();
- results[multi_i]=multi_error;
- if ((start == end) && !multi_error)
- deltas[multi_i] = end - tv.tv_sec;
-
- } multi_End;
- AFS_GLOCK();
-
- for(i=0;i<nconns;i++){
- tc = conns[i];
- sa = tc->srvr;
-
- if (( results[i] >= 0 ) && (sa->sa_flags & SRVADDR_ISDOWN) && (tc->srvr == sa)) {
- /* server back up */
- print_internet_address("afs: file server ", sa, " is back up", 2);
-
- ObtainWriteLock(&afs_xserver, 244);
- ObtainWriteLock(&afs_xsrvAddr, 245);
- afs_MarkServerUpOrDown(sa, 0);
- ReleaseWriteLock(&afs_xsrvAddr);
- ReleaseWriteLock(&afs_xserver);
-
- if (afs_waitForeverCount) {
- afs_osi_Wakeup(&afs_waitForever);
- }
- } else {
- if (results[i] < 0) {
- /* server crashed */
- afs_ServerDown(sa);
- ForceNewConnections(sa); /* multi homed clients */
- }
- }
- }
+ afs_osi_Free(addrs, srvAddrCount * sizeof(*addrs));
+ addrs = NULL;
- /*
- * If we're supposed to set the time, and the call worked
- * quickly (same second response) and this is the host we
- * use for the time and the time is really different, then
- * really set the time
- */
- if (afs_setTime != 0) {
- for (i=0; i<nconns; i++) {
- delta = deltas[i];
- tc = conns[i];
- sa = tc->srvr;
-
- if ((tc->srvr->server == afs_setTimeHost ||
- /* Sync only to a server in the local cell */
- (afs_setTimeHost == (struct server *)0 &&
- afs_IsPrimaryCell(sa->server->cell)))) {
- /* set the time */
- char msgbuf[90]; /* strlen("afs: setting clock...") + slop */
- delta = end - tv.tv_sec; /* how many secs fast we are */
-
- afs_setTimeHost = tc->srvr->server;
- /* see if clock has changed enough to make it worthwhile */
- if (delta >= AFS_MINCHANGE || delta <= -AFS_MINCHANGE) {
- end = osi_Time();
- if (delta > AFS_MAXCHANGEBACK) {
- /* setting clock too far back, just do it a little */
- tv.tv_sec = end - AFS_MAXCHANGEBACK;
- } else {
- tv.tv_sec = end - delta;
- }
- afs_osi_SetTime(&tv);
- if (delta > 0) {
- strcpy(msgbuf, "afs: setting clock back ");
- if (delta > AFS_MAXCHANGEBACK) {
- afs_strcat(msgbuf,
- afs_cv2string(&tbuffer[CVBS],
- AFS_MAXCHANGEBACK));
- afs_strcat(msgbuf, " seconds (of ");
- afs_strcat(msgbuf,
- afs_cv2string(&tbuffer[CVBS],
- delta -
- AFS_MAXCHANGEBACK));
- afs_strcat(msgbuf, ", via ");
- print_internet_address(msgbuf, sa,
- "); clock is still fast.",
- 0);
- } else {
- afs_strcat(msgbuf,
- afs_cv2string(&tbuffer[CVBS], delta));
- afs_strcat(msgbuf, " seconds (via ");
- print_internet_address(msgbuf, sa, ").", 0);
- }
- } else {
- strcpy(msgbuf, "afs: setting clock ahead ");
- afs_strcat(msgbuf,
- afs_cv2string(&tbuffer[CVBS], -delta));
- afs_strcat(msgbuf, " seconds (via ");
- print_internet_address(msgbuf, sa, ").", 0);
- }
- /* We're only going to set it once; why bother looping? */
- break;
- }
- }
- }
+ (*func1)(nconns, rxconns, conns);
+
+ if (func2) {
+ (*func2)(nconns, rxconns, conns);
}
+
for (i = 0; i < nconns; i++) {
- afs_PutConn(conns[i], SHARED_LOCK); /* done with it now */
+ if (conntimer[i] == 1)
+ rx_SetConnDeadTime(rxconns[i], afs_rx_deadtime);
+ afs_PutConn(conns[i], rxconns[i], SHARED_LOCK); /* done with it now */
}
-
- afs_osi_Free(addrs, srvAddrCount * sizeof(*addrs));
- afs_osi_Free(conns, j * sizeof(struct conn *));
+
+ afs_osi_Free(conns, j * sizeof(struct afs_conn *));
afs_osi_Free(rxconns, j * sizeof(struct rx_connection *));
afs_osi_Free(conntimer, j * sizeof(afs_int32));
- afs_osi_Free(deltas, j * sizeof(afs_int32));
- afs_osi_Free(results, j * sizeof(afs_int32));
-
+
} /*afs_CheckServers*/
/* Rules:
X = (aX + c) % m
- m is a power of two
+ m is a power of two
a % 8 is 5
a is 0.73m should be 0.01m .. 0.99m
c is more or less immaterial. 1 or a is suggested.
-
+
NB: LOW ORDER BITS are not very random. To get small random numbers,
- treat result as <1, with implied binary point, and multiply by
+ treat result as <1, with implied binary point, and multiply by
desired modulus.
NB: Has to be unsigned, since shifts on signed quantities may preserve
the sign bit.
*/
-/* added rxi_getaddr() to try to get as much initial randomness as
- possible, since at least one customer reboots ALL their clients
+/* added rxi_getaddr() to try to get as much initial randomness as
+ possible, since at least one customer reboots ALL their clients
simultaneously -- so osi_Time is bound to be the same on some of the
clients. This is probably OK, but I don't want to see too much of it.
*/
afs_random(void)
{
static afs_int32 state = 0;
- register int i;
+ int i;
AFS_STATCNT(afs_random);
if (!state) {
/* returns int 0..14 using the high bits of a pseudo-random number instead of
the low bits, as the low bits are "less random" than the high ones...
slight roundoff error exists, an excercise for the reader.
- need to multiply by something with lots of ones in it, so multiply by
+ need to multiply by something with lots of ones in it, so multiply by
8 or 16 is right out.
*/
int
} /*afs_SortServers */
/* afs_SetServerPrefs is rather system-dependent. It pokes around in kernel
- data structures to determine what the local IP addresses and subnet masks
+ data structures to determine what the local IP addresses and subnet masks
are in order to choose which server(s) are on the local subnet.
As I see it, there are several cases:
4. The server is on a different logical subnet or net than this host, but
this host is a 'metric 0 gateway' to it. Ie, two address-spaces share
one physical medium.
- 5. This host has a direct (point-to-point, ie, PPP or SLIP) link to the
+ 5. This host has a direct (point-to-point, ie, PPP or SLIP) link to the
server.
6. This host and the server are disjoint.
That is a rough order of preference. If a point-to-point link has a high
- metric, I'm assuming that it is a very slow link, and putting it at the
- bottom of the list (at least until RX works better over slow links). If
- its metric is 1, I'm assuming that it's relatively fast (T1) and putting
+ metric, I'm assuming that it is a very slow link, and putting it at the
+ bottom of the list (at least until RX works better over slow links). If
+ its metric is 1, I'm assuming that it's relatively fast (T1) and putting
it ahead of #6.
It's not easy to check for case #4, so I'm ignoring it for the time being.
BSD "if" code keeps track of some rough network statistics (cf 'netstat -i')
- That could be used to prefer certain servers fairly easily. Maybe some
+ That could be used to prefer certain servers fairly easily. Maybe some
other time...
NOTE: this code is very system-dependent, and very dependent on the TCP/IP
#define USEIFADDR
-
-#if defined(AFS_SUN5_ENV) && ! defined(AFS_SUN56_ENV)
-#include <inet/common.h>
-/* IP interface structure, one per local address */
-typedef struct ipif_s {
- /**/ struct ipif_s *ipif_next;
- struct ill_s *ipif_ill; /* Back pointer to our ill */
- long ipif_id; /* Logical unit number */
- u_int ipif_mtu; /* Starts at ipif_ill->ill_max_frag */
- afs_int32 ipif_local_addr; /* Local IP address for this if. */
- afs_int32 ipif_net_mask; /* Net mask for this interface. */
- afs_int32 ipif_broadcast_addr; /* Broadcast addr for this interface. */
- afs_int32 ipif_pp_dst_addr; /* Point-to-point dest address. */
- u_int ipif_flags; /* Interface flags. */
- u_int ipif_metric; /* BSD if metric, for compatibility. */
- u_int ipif_ire_type; /* LOCAL or LOOPBACK */
- mblk_t *ipif_arp_down_mp; /* Allocated at time arp comes up to
- * prevent awkward out of mem condition
- * later
- */
- mblk_t *ipif_saved_ire_mp; /* Allocated for each extra IRE_SUBNET/
- * RESOLVER on this interface so that
- * they can survive ifconfig down.
- */
- /*
- * The packet counts in the ipif contain the sum of the
- * packet counts in dead IREs that were affiliated with
- * this ipif.
- */
- u_long ipif_fo_pkt_count; /* Forwarded thru our dead IREs */
- u_long ipif_ib_pkt_count; /* Inbound packets for our dead IREs */
- u_long ipif_ob_pkt_count; /* Outbound packets to our dead IREs */
- unsigned int
- ipif_multicast_up:1, /* We have joined the allhosts group */
- : 0;
-} ipif_t;
-
-typedef struct ipfb_s {
- /**/ struct ipf_s *ipfb_ipf; /* List of ... */
- kmutex_t ipfb_lock; /* Protect all ipf in list */
-} ipfb_t;
-
-typedef struct ilm_s {
- /**/ afs_int32 ilm_addr;
- int ilm_refcnt;
- u_int ilm_timer; /* IGMP */
- struct ipif_s *ilm_ipif; /* Back pointer to ipif */
- struct ilm_s *ilm_next; /* Linked list for each ill */
-} ilm_t;
-
-typedef struct ill_s {
- /**/ struct ill_s *ill_next; /* Chained in at ill_g_head. */
- struct ill_s **ill_ptpn; /* Pointer to previous next. */
- queue_t *ill_rq; /* Read queue. */
- queue_t *ill_wq; /* Write queue. */
-
- int ill_error; /* Error value sent up by device. */
-
- ipif_t *ill_ipif; /* Interface chain for this ILL. */
- u_int ill_ipif_up_count; /* Number of IPIFs currently up. */
- u_int ill_max_frag; /* Max IDU. */
- char *ill_name; /* Our name. */
- u_int ill_name_length; /* Name length, incl. terminator. */
- u_int ill_subnet_type; /* IRE_RESOLVER or IRE_SUBNET. */
- u_int ill_ppa; /* Physical Point of Attachment num. */
- u_long ill_sap;
- int ill_sap_length; /* Including sign (for position) */
- u_int ill_phys_addr_length; /* Excluding the sap. */
- mblk_t *ill_frag_timer_mp; /* Reassembly timer state. */
- ipfb_t *ill_frag_hash_tbl; /* Fragment hash list head. */
-
- queue_t *ill_bind_pending_q; /* Queue waiting for DL_BIND_ACK. */
- ipif_t *ill_ipif_pending; /* IPIF waiting for DL_BIND_ACK. */
-
- /* ill_hdr_length and ill_hdr_mp will be non zero if
- * the underlying device supports the M_DATA fastpath
- */
- int ill_hdr_length;
-
- ilm_t *ill_ilm; /* Multicast mebership for lower ill */
-
- /* All non-nil cells between 'ill_first_mp_to_free' and
- * 'ill_last_mp_to_free' are freed in ill_delete.
- */
-#define ill_first_mp_to_free ill_hdr_mp
- mblk_t *ill_hdr_mp; /* Contains fastpath template */
- mblk_t *ill_bcast_mp; /* DLPI header for broadcasts. */
- mblk_t *ill_bind_pending; /* T_BIND_REQ awaiting completion. */
- mblk_t *ill_resolver_mp; /* Resolver template. */
- mblk_t *ill_attach_mp;
- mblk_t *ill_bind_mp;
- mblk_t *ill_unbind_mp;
- mblk_t *ill_detach_mp;
-#define ill_last_mp_to_free ill_detach_mp
-
- u_int ill_frag_timer_running:1, ill_needs_attach:1, ill_is_ptp:1,
- ill_priv_stream:1, ill_unbind_pending:1, ill_pad_to_bit_31:27;
- MI_HRT_DCL(ill_rtime)
- MI_HRT_DCL(ill_rtmp)
-} ill_t;
-#endif
-
#ifdef AFS_USERSPACE_IP_ADDR
#ifndef afs_min
#define afs_min(A,B) ((A)<(B)) ? (A) : (B)
/*
* The IP addresses and ranks are determined by afsd (in user space) and
* passed into the kernel at startup time through the AFSOP_ADVISEADDR
- * system call. These are stored in the data structure
- * called 'afs_cb_interface'.
+ * system call. These are stored in the data structure
+ * called 'afs_cb_interface'.
*
* struct srvAddr *sa; remote server
* afs_int32 addr; one of my local addr in net order
sa->sa_iprank = afs_min(sa->sa_iprank, MED);
}
}
+ return;
}
#else /* AFS_USERSPACE_IP_ADDR */
-#if (! defined(AFS_SUN5_ENV)) && !defined(AFS_DARWIN60_ENV) && defined(USEIFADDR)
+#if (! defined(AFS_SUN5_ENV)) && (! defined(AFS_DARWIN_ENV)) && (! defined(AFS_OBSD47_ENV)) && (! defined(AFS_FBSD_ENV)) && defined(USEIFADDR)
void
afsi_SetServerIPRank(struct srvAddr *sa, struct in_ifaddr *ifa)
{
#endif /* IFF_POINTTOPOINT */
}
#endif /*(!defined(AFS_SUN5_ENV)) && defined(USEIFADDR) */
-#if defined(AFS_DARWIN60_ENV) && defined(USEIFADDR)
+#if (defined(AFS_DARWIN_ENV) || defined(AFS_OBSD47_ENV) || defined(AFS_FBSD_ENV)) && defined(USEIFADDR)
#ifndef afs_min
#define afs_min(A,B) ((A)<(B)) ? (A) : (B)
#endif
void
-afsi_SetServerIPRank(sa, ifa)
- struct srvAddr *sa;
-#ifdef AFS_DARWIN80_ENV
- ifaddr_t ifa;
-#else
- struct ifaddr *ifa;
-#endif
+afsi_SetServerIPRank(struct srvAddr *sa, rx_ifaddr_t ifa)
{
struct sockaddr sout;
struct sockaddr_in *sin;
+#if defined(AFS_DARWIN80_ENV) && !defined(UKERNEL)
int t;
+#else
+ void *t;
+#endif
afs_uint32 subnetmask, myAddr, myNet, myDstaddr, mySubnet, netMask;
afs_uint32 serverAddr;
- if (ifaddr_address_family(ifa) != AF_INET)
+ if (rx_ifaddr_address_family(ifa) != AF_INET)
return;
- t = ifaddr_address(ifa, &sout, sizeof(sout));
- if (t == 0) {
+ t = rx_ifaddr_address(ifa, &sout, sizeof(sout));
+ if (t != 0) {
sin = (struct sockaddr_in *)&sout;
myAddr = ntohl(sin->sin_addr.s_addr); /* one of my IP addr in host order */
} else {
myAddr = 0;
}
serverAddr = ntohl(sa->sa_ip); /* server's IP addr in host order */
- t = ifaddr_netmask(ifa, &sout, sizeof(sout));
- if (t == 0) {
+ t = rx_ifaddr_netmask(ifa, &sout, sizeof(sout));
+ if (t != 0) {
sin = (struct sockaddr_in *)&sout;
subnetmask = ntohl(sin->sin_addr.s_addr); /* subnet mask in host order */
} else {
subnetmask = 0;
}
- t = ifaddr_dstaddress(ifa, &sout, sizeof(sout));
- if (t == 0) {
+ t = rx_ifaddr_dstaddress(ifa, &sout, sizeof(sout));
+ if (t != 0) {
sin = (struct sockaddr_in *)&sout;
- myDstaddr = sin->sin_addr.s_addr;
+ myDstaddr = ntohl(sin->sin_addr.s_addr);
} else {
myDstaddr = 0;
}
if (serverAddr == myAddr) { /* same machine */
sa->sa_iprank = afs_min(sa->sa_iprank, TOPR);
} else { /* same subnet */
- sa->sa_iprank = afs_min(sa->sa_iprank, HI + ifnet_metric(ifaddr_ifnet(ifa)));
+ sa->sa_iprank = afs_min(sa->sa_iprank, HI + rx_ifnet_metric(rx_ifaddr_ifnet(ifa)));
}
} else { /* same net */
- sa->sa_iprank = afs_min(sa->sa_iprank, MED + ifnet_metric(ifaddr_ifnet(ifa)));
+ sa->sa_iprank = afs_min(sa->sa_iprank, MED + rx_ifnet_metric(rx_ifaddr_ifnet(ifa)));
}
}
#ifdef IFF_POINTTOPOINT
/* check for case #4 -- point-to-point link */
- if ((ifnet_flags(ifaddr_ifnet(ifa)) & IFF_POINTOPOINT)
+ if ((rx_ifnet_flags(rx_ifaddr_ifnet(ifa)) & IFF_POINTOPOINT)
&& (myDstaddr == serverAddr)) {
- if (ifnet_metric(ifaddr_ifnet(ifa)) >= (MAXDEFRANK - MED) / PPWEIGHT)
+ if (rx_ifnet_metric(rx_ifaddr_ifnet(ifa)) >= (MAXDEFRANK - MED) / PPWEIGHT)
t = MAXDEFRANK;
else
- t = MED + (PPWEIGHT << ifnet_metric(ifaddr_ifnet(ifa)));
+ t = MED + (PPWEIGHT << rx_ifnet_metric(rx_ifaddr_ifnet(ifa)));
if (sa->sa_iprank > t)
sa->sa_iprank = t;
}
#ifdef AFS_SGI62_ENV
static int
-
- afsi_enum_set_rank(struct hashbucket *h, caddr_t mkey, caddr_t arg1,
- caddr_t arg2) {
+afsi_enum_set_rank(struct hashbucket *h, caddr_t mkey, caddr_t arg1,
+ caddr_t arg2)
+{
afsi_SetServerIPRank((struct srvAddr *)arg1, (struct in_ifaddr *)h);
return 0; /* Never match, so we enumerate everyone */
}
#endif /* AFS_SGI62_ENV */
-static int afs_SetServerPrefs(struct srvAddr *sa) {
+static int
+afs_SetServerPrefs(struct srvAddr *sa)
+{
#if defined(AFS_USERSPACE_IP_ADDR)
int i;
#else /* AFS_USERSPACE_IP_ADDR */
#if defined(AFS_SUN5_ENV)
#ifdef AFS_SUN510_ENV
- ill_walk_context_t ctx;
+ int i = 0;
#else
extern struct ill_s *ill_g_headp;
long *addr = (long *)ill_g_headp;
-#endif
ill_t *ill;
ipif_t *ipif;
+#endif
int subnet, subnetmask, net, netmask;
if (sa)
sa->sa_iprank = 0;
#ifdef AFS_SUN510_ENV
- for (ill = ILL_START_WALK_ALL(&ctx) ; ill ; ill = ill_next(&ctx, ill)) {
+ rw_enter(&afsifinfo_lock, RW_READER);
+
+ for (i = 0; (afsifinfo[i].ipaddr != NULL) && (i < ADDRSPERSITE); i++) {
+
+ if (IN_CLASSA(afsifinfo[i].ipaddr)) {
+ netmask = IN_CLASSA_NET;
+ } else if (IN_CLASSB(afsifinfo[i].ipaddr)) {
+ netmask = IN_CLASSB_NET;
+ } else if (IN_CLASSC(afsifinfo[i].ipaddr)) {
+ netmask = IN_CLASSC_NET;
+ } else {
+ netmask = 0;
+ }
+ net = afsifinfo[i].ipaddr & netmask;
+
+#ifdef notdef
+ if (!s) {
+ if (!rx_IsLoopbackAddr(afsifinfo[i].ipaddr)) { /* ignore loopback */
+ *cnt += 1;
+ if (*cnt > 16)
+ return;
+ *addrp++ = afsifinfo[i].ipaddr;
+ }
+ } else
+#endif /* notdef */
+ {
+ /* XXXXXX Do the individual ip ranking below XXXXX */
+ if ((sa->sa_ip & netmask) == net) {
+ if ((sa->sa_ip & subnetmask) == subnet) {
+ if (afsifinfo[i].ipaddr == sa->sa_ip) { /* ie, ME! */
+ sa->sa_iprank = TOPR;
+ } else {
+ sa->sa_iprank = HI + afsifinfo[i].metric; /* case #2 */
+ }
+ } else {
+ sa->sa_iprank = MED + afsifinfo[i].metric; /* case #3 */
+ }
+ } else {
+ sa->sa_iprank = LO + afsifinfo[i].metric; /* case #4 */
+ }
+ /* check for case #5 -- point-to-point link */
+ if ((afsifinfo[i].flags & IFF_POINTOPOINT)
+ && (afsifinfo[i].dstaddr == sa->sa_ip)) {
+
+ if (afsifinfo[i].metric >= (MAXDEFRANK - MED) / PPWEIGHT)
+ sa->sa_iprank = MAXDEFRANK;
+ else
+ sa->sa_iprank = MED + (PPWEIGHT << afsifinfo[i].metric);
+ }
+ }
+ }
+
+ rw_exit(&afsifinfo_lock);
#else
for (ill = (struct ill_s *)*addr /*ill_g_headp */ ; ill;
ill = ill->ill_next) {
-#endif
-#ifdef AFS_SUN58_ENV
/* Make sure this is an IPv4 ILL */
if (ill->ill_isv6)
continue;
-#endif
for (ipif = ill->ill_ipif; ipif; ipif = ipif->ipif_next) {
subnet = ipif->ipif_local_addr & ipif->ipif_net_mask;
subnetmask = ipif->ipif_net_mask;
/*
- * Generate the local net using the local address and
+ * Generate the local net using the local address and
* whate we know about Class A, B and C networks.
*/
if (IN_CLASSA(ipif->ipif_local_addr)) {
net = ipif->ipif_local_addr & netmask;
#ifdef notdef
if (!s) {
- if (ipif->ipif_local_addr != 0x7f000001) { /* ignore loopback */
+ if (!rx_IsLoopbackAddr(ipif->ipif_local_addr)) { /* ignore loopback */
*cnt += 1;
if (*cnt > 16)
return;
}
}
}
+#endif /* AFS_SUN510_ENV */
#else
#ifndef USEIFADDR
- struct ifnet *ifn = NULL;
+ rx_ifnet_t ifn = NULL;
struct in_ifaddr *ifad = (struct in_ifaddr *)0;
struct sockaddr_in *sin;
#elif defined(AFS_DARWIN80_ENV)
{
errno_t t;
- int cnt=0;
- ifaddr_t *addresses, address;
- t = ifnet_get_address_list_family(NULL, &addresses, AF_INET);
- if (t == 0) {
- while(addresses[cnt] != NULL) {
- afsi_SetServerIPRank(sa, address);
- cnt++;
+ unsigned int count;
+ int cnt=0, m, j;
+ rx_ifaddr_t *ifads;
+ rx_ifnet_t *ifns;
+
+ if (!ifnet_list_get(AF_INET, &ifns, &count)) {
+ for (m = 0; m < count; m++) {
+ if (!ifnet_get_address_list(ifns[m], &ifads)) {
+ for (j = 0; ifads[j] != NULL && cnt < ADDRSPERSITE; j++) {
+ afsi_SetServerIPRank(sa, ifads[j]);
+ cnt++;
+ }
+ ifnet_free_address_list(ifads);
+ }
}
- ifnet_free_address_list(addresses);
+ ifnet_list_free(ifns);
}
}
-#elif defined(AFS_DARWIN60_ENV)
+#elif defined(AFS_DARWIN_ENV)
{
- struct ifnet *ifn;
- struct ifaddr *ifa;
+ rx_ifnet_t ifn;
+ rx_ifaddr_t ifa;
TAILQ_FOREACH(ifn, &ifnet, if_link) {
TAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link) {
afsi_SetServerIPRank(sa, ifa);
}}}
-#elif defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
+#elif defined(AFS_FBSD_ENV)
{
struct in_ifaddr *ifa;
+#if defined(AFS_FBSD80_ENV)
+ TAILQ_FOREACH(ifa, &V_in_ifaddrhead, ia_link) {
+#else
TAILQ_FOREACH(ifa, &in_ifaddrhead, ia_link) {
- afsi_SetServerIPRank(sa, ifa);
+#endif
+ afsi_SetServerIPRank(sa, &ifa->ia_ifa);
}}
#elif defined(AFS_OBSD_ENV)
{
for (ifa = in_ifaddr.tqh_first; ifa; ifa = ifa->ia_list.tqe_next)
afsi_SetServerIPRank(sa, ifa);
}
+#elif defined(AFS_NBSD40_ENV)
+ {
+ extern struct in_ifaddrhead in_ifaddrhead;
+ struct in_ifaddr *ifa;
+ for (ifa = in_ifaddrhead.tqh_first; ifa; ifa = ifa->ia_list.tqe_next)
+ afsi_SetServerIPRank(sa, ifa);
+ }
#else
{
struct in_ifaddr *ifa;
afsi_SetServerIPRank(sa, ifa);
}}
#endif
- end:
#endif /* USEIFADDR */
+#ifndef USEIFADDR
+ end:
+#endif
#endif /* AFS_SUN5_ENV */
#endif /* else AFS_USERSPACE_IP_ADDR */
if (sa)
/* afs_FlushServer()
* The addresses on this server struct has changed in some way and will
* clean up all other structures that may reference it.
- * The afs_xserver and afs_xsrvAddr locks are assumed taken.
+ * The afs_xserver, afs_xvcb and afs_xsrvAddr locks are assumed taken.
*/
-void afs_FlushServer(struct server *srvp) {
+static void
+afs_FlushServer(struct server *srvp, struct volume *tv)
+{
afs_int32 i;
struct server *ts, **pts;
/* Find any volumes residing on this server and flush their state */
- afs_ResetVolumes(srvp);
+ afs_ResetVolumes(srvp, tv);
/* Flush all callbacks in the all vcaches for this specific server */
- afs_FlushServerCBs(srvp);
+ afs_FlushServerCBs(srvp);
/* Remove all the callbacks structs */
if (srvp->cbrs) {
struct afs_cbr *cb, *cbnext;
- MObtainWriteLock(&afs_xvcb, 300);
for (cb = srvp->cbrs; cb; cb = cbnext) {
cbnext = cb->next;
afs_FreeCBR(cb);
} srvp->cbrs = (struct afs_cbr *)0;
- ReleaseWriteLock(&afs_xvcb);
}
/* If no more srvAddr structs hanging off of this server struct,
* remains connected to a server struct.
* The afs_xserver and afs_xsrvAddr locks are assumed taken.
* It is not removed from the afs_srvAddrs hash chain.
+ * If resetting volumes, do not reset volume tv
*/
-void afs_RemoveSrvAddr(struct srvAddr *sap) {
+static void
+afs_RemoveSrvAddr(struct srvAddr *sap, struct volume *tv)
+{
struct srvAddr **psa, *sa;
struct server *srv;
sa->server = 0;
/* Flush the server struct since it's IP address has changed */
- afs_FlushServer(srv);
+ afs_FlushServer(srv, tv);
}
}
-/* afs_GetServer()
- * Return an updated and properly initialized server structure
- * corresponding to the server ID, cell, and port specified.
- * If one does not exist, then one will be created.
- * aserver and aport must be in NET byte order.
+/* afs_GetCapabilities
+ * Try and retrieve capabilities of a given file server. Carps on actual
+ * failure. Servers are not expected to support this RPC. */
+void
+afs_GetCapabilities(struct server *ts)
+{
+ Capabilities caps = {0, NULL};
+ struct vrequest treq;
+ struct afs_conn *tc;
+ struct unixuser *tu;
+ struct rx_connection *rxconn;
+ afs_int32 code;
+
+ if ( !ts || !ts->cell )
+ return;
+ if ( !afs_osi_credp )
+ return;
+
+ if ((code = afs_InitReq(&treq, afs_osi_credp)))
+ return;
+ tu = afs_GetUser(treq.uid, ts->cell->cellNum, SHARED_LOCK);
+ if ( !tu )
+ return;
+ tc = afs_ConnBySA(ts->addr, ts->cell->fsport, ts->cell->cellNum, tu, 0, 1,
+ SHARED_LOCK,
+ &rxconn);
+ afs_PutUser(tu, SHARED_LOCK);
+ if ( !tc )
+ return;
+ /* InitCallBackStateN, triggered by our RPC, may need this */
+ ReleaseWriteLock(&afs_xserver);
+ code = RXAFS_GetCapabilities(rxconn, &caps);
+ ObtainWriteLock(&afs_xserver, 723);
+ /* we forced a conn above; important we mark it down if needed */
+ if ((code < 0) && (code != RXGEN_OPCODE)) {
+ afs_ServerDown(tc->parent->srvr, code);
+ ForceNewConnections(tc->parent->srvr); /* multi homed clients */
+ }
+ afs_PutConn(tc, rxconn, SHARED_LOCK);
+ if ( code && code != RXGEN_OPCODE ) {
+ afs_warn("RXAFS_GetCapabilities failed with code %d\n", code);
+ /* better not be anything to free. we failed! */
+ return;
+ }
+
+ ts->flags |= SCAPS_KNOWN;
+
+ if ( caps.Capabilities_len > 0 ) {
+ ts->capabilities = caps.Capabilities_val[0];
+ xdr_free((xdrproc_t)xdr_Capabilities, &caps);
+ caps.Capabilities_len = 0;
+ caps.Capabilities_val = NULL;
+ }
+
+}
+
+static struct server *
+afs_SearchServer(u_short aport, afsUUID * uuidp, afs_int32 locktype,
+ struct server **oldts, afs_int32 addr_uniquifier)
+{
+ struct server *ts = afs_FindServer(0, aport, uuidp, locktype);
+ if (ts && (ts->sr_addr_uniquifier == addr_uniquifier) && ts->addr) {
+ /* Found a server struct that is multihomed and same
+ * uniqufier (same IP addrs). The above if statement is the
+ * same as in InstallUVolumeEntry().
+ */
+ return ts;
+ }
+ if (ts)
+ *oldts = ts; /* Will reuse if same uuid */
+ return NULL;
+}
+
+/*!
+ * Return an updated and properly initialized server structure.
+ *
+ * Takes a server ID, cell, and port.
+ * If server does not exist, then one will be created.
+ * @param[in] aserverp
+ * The server address in network byte order
+ * @param[in] nservers
+ * The number of IP addresses claimed by the server
+ * @param[in] acell
+ * The cell the server is in
+ * @param[in] aport
+ * The port for the server (fileserver or vlserver) in network byte order
+ * @param[in] locktype
+ * The type of lock to hold when iterating server hash (unused).
+ * @param[in] uuidp
+ * The uuid for servers supporting one.
+ * @param[in] addr_uniquifier
+ * The vldb-provider per-instantiated-server uniquifer counter.
+ * @param[in] tv
+ * A volume not to reset information for if the server addresses
+ * changed.
+ *
+ * @return
+ * A server structure matching the request.
*/
-struct server *afs_GetServer(afs_uint32 * aserverp, afs_int32 nservers,
- afs_int32 acell, u_short aport,
- afs_int32 locktype, afsUUID * uuidp,
- afs_int32 addr_uniquifier) {
+struct server *
+afs_GetServer(afs_uint32 *aserverp, afs_int32 nservers, afs_int32 acell,
+ u_short aport, afs_int32 locktype, afsUUID * uuidp,
+ afs_int32 addr_uniquifier, struct volume *tv)
+{
struct server *oldts = 0, *ts, *newts, *orphts = 0;
struct srvAddr *oldsa, *newsa, *nextsa, *orphsa;
- u_short fsport;
afs_int32 iphash, k, srvcount = 0;
unsigned int srvhash;
/* Check if the server struct exists and is up to date */
if (!uuidp) {
if (nservers != 1)
- panic("afs_GetServer: incorect count of servers");
+ panic("afs_GetServer: incorrect count of servers");
ObtainReadLock(&afs_xsrvAddr);
ts = afs_FindServer(aserverp[0], aport, NULL, locktype);
ReleaseReadLock(&afs_xsrvAddr);
} else {
if (nservers <= 0)
panic("afs_GetServer: incorrect count of servers");
- ts = afs_FindServer(0, aport, uuidp, locktype);
- if (ts && (ts->sr_addr_uniquifier == addr_uniquifier) && ts->addr) {
- /* Found a server struct that is multihomed and same
- * uniqufier (same IP addrs). The above if statement is the
- * same as in InstallUVolumeEntry().
- */
+
+ ts = afs_SearchServer(aport, uuidp, locktype, &oldts, addr_uniquifier);
+ if (ts) {
ReleaseSharedLock(&afs_xserver);
return ts;
}
- if (ts)
- oldts = ts; /* Will reuse if same uuid */
}
- UpgradeSToWLock(&afs_xserver, 36);
+ /*
+ * Lock hierarchy requires xvcb, then xserver. We *have* xserver.
+ * Do a little dance and see if we can grab xvcb. If not, we
+ * need to recheck that oldts is still right after a drop and reobtain.
+ */
+ if (EWOULDBLOCK == NBObtainWriteLock(&afs_xvcb, 300)) {
+ ReleaseSharedLock(&afs_xserver);
+ ObtainWriteLock(&afs_xvcb, 299);
+ ObtainWriteLock(&afs_xserver, 35);
+
+ /* we don't know what changed while we didn't hold the lock */
+ oldts = 0;
+ ts = afs_SearchServer(aport, uuidp, locktype, &oldts,
+ addr_uniquifier);
+ if (ts) {
+ ReleaseWriteLock(&afs_xserver);
+ ReleaseWriteLock(&afs_xvcb);
+ return ts;
+ }
+ } else {
+ UpgradeSToWLock(&afs_xserver, 36);
+ }
ObtainWriteLock(&afs_xsrvAddr, 116);
-
srvcount = afs_totalServers;
/* Reuse/allocate a new server structure */
if (oldts) {
newts = oldts;
} else {
- newts = (struct server *)afs_osi_Alloc(sizeof(struct server));
+ newts = afs_osi_Alloc(sizeof(struct server));
if (!newts)
panic("malloc of server struct");
afs_totalServers++;
- memset((char *)newts, 0, sizeof(struct server));
+ memset(newts, 0, sizeof(struct server));
/* Add the server struct to the afs_servers[] hash chain */
srvhash =
if (acell)
newts->cell = afs_GetCell(acell, 0);
- fsport = (newts->cell ? newts->cell->fsport : AFS_FSPORT);
-
/* For each IP address we are registering */
for (k = 0; k < nservers; k++) {
iphash = SHash(aserverp[k]);
break;
}
if (oldsa && (oldsa->server != newts)) {
- afs_RemoveSrvAddr(oldsa); /* Remove from its server struct */
+ afs_RemoveSrvAddr(oldsa, tv); /* Remove from its server struct */
oldsa->next_sa = newts->addr; /* Add to the new server struct */
newts->addr = oldsa;
}
if (oldsa) {
newsa = oldsa;
} else {
- newsa = (struct srvAddr *)afs_osi_Alloc(sizeof(struct srvAddr));
+ newsa = afs_osi_Alloc(sizeof(struct srvAddr));
if (!newsa)
panic("malloc of srvAddr struct");
afs_totalSrvAddrs++;
- memset((char *)newsa, 0, sizeof(struct srvAddr));
+ memset(newsa, 0, sizeof(struct srvAddr));
/* Add the new srvAddr to the afs_srvAddrs[] hash chain */
newsa->next_bkt = afs_srvAddrs[iphash];
/* Compute preference values and resort */
if (!newsa->sa_iprank) {
- if (aport == fsport) {
- afs_SetServerPrefs(newsa); /* new fileserver rank */
- } else {
- newsa->sa_iprank = 10000 + afs_randomMod127(); /* new vlserver rank */
- }
+ afs_SetServerPrefs(newsa); /* new server rank */
}
}
afs_SortOneServer(newts); /* Sort by rank */
/* Have a srvAddr struct. Now get a server struct (if not already) */
if (!orphts) {
- orphts =
- (struct server *)afs_osi_Alloc(sizeof(struct server));
+ orphts = afs_osi_Alloc(sizeof(struct server));
if (!orphts)
panic("malloc of lo server struct");
- memset((char *)orphts, 0, sizeof(struct server));
+ memset(orphts, 0, sizeof(struct server));
afs_totalServers++;
/* Add the orphaned server to the afs_servers[] hash chain.
* Its iphash does not matter since we never look up the server
- * in the afs_servers table by its ip address (only by uuid -
+ * in the afs_servers table by its ip address (only by uuid -
* which this has none).
*/
iphash = SHash(aserverp[k]);
/* Hang the srvAddr struct off of the server structure. The server
* may have multiple srvAddrs, but it won't be marked multihomed.
*/
- afs_RemoveSrvAddr(orphsa); /* remove */
+ afs_RemoveSrvAddr(orphsa, tv); /* remove */
orphsa->next_sa = orphts->addr; /* hang off server struct */
orphts->addr = orphsa;
orphsa->server = orphts;
orphsa->sa_flags &= ~SRVADDR_MH; /* Not multihomed */
}
}
+ /* We can't need this below, and won't reacquire */
+ ReleaseWriteLock(&afs_xvcb);
srvcount = afs_totalServers - srvcount; /* # servers added and removed */
if (srvcount) {
if (afs_stats_cmperf.srvRecords > afs_stats_cmperf.srvRecordsHWM)
afs_stats_cmperf.srvRecordsHWM = afs_stats_cmperf.srvRecords;
}
+ /* We can't need this below, and won't reacquire */
+ ReleaseWriteLock(&afs_xvcb);
ReleaseWriteLock(&afs_xsrvAddr);
+
+ if ( aport == AFS_FSPORT && !(newts->flags & SCAPS_KNOWN))
+ afs_GetCapabilities(newts);
+
ReleaseWriteLock(&afs_xserver);
return (newts);
} /* afs_GetServer */
-void afs_ActivateServer(struct srvAddr *sap) {
+void
+afs_ActivateServer(struct srvAddr *sap)
+{
osi_timeval_t currTime; /*Filled with current time */
osi_timeval_t *currTimeP; /*Ptr to above */
struct afs_stats_SrvUpDownInfo *upDownP; /*Ptr to up/down info record */
}
}
-
-void shutdown_server()
+void
+afs_RemoveAllConns(void)
{
int i;
+ struct server *ts, *nts;
+ struct srvAddr *sa;
- for (i = 0; i < NSERVERS; i++) {
- struct server *ts, *next;
+ ObtainReadLock(&afs_xserver);
+ ObtainWriteLock(&afs_xconn, 1001);
- ts = afs_servers[i];
- while(ts) {
- next = ts->next;
- afs_osi_Free(ts, sizeof(struct server));
- ts = next;
+ /*printf("Destroying connections ... ");*/
+ for (i = 0; i < NSERVERS; i++) {
+ for (ts = afs_servers[i]; ts; ts = nts) {
+ nts = ts->next;
+ for (sa = ts->addr; sa; sa = sa->next_sa) {
+ if (sa->conns) {
+ afs_ReleaseConns(sa->conns);
+ sa->conns = NULL;
+ }
+ }
}
}
+ /*printf("done\n");*/
- for (i = 0; i < NSERVERS; i++) {
- struct srvAddr *sa, *next;
+ ReleaseWriteLock(&afs_xconn);
+ ReleaseReadLock(&afs_xserver);
- sa = afs_srvAddrs[i];
- while(sa) {
- next = sa->next_bkt;
- afs_osi_Free(sa, sizeof(struct srvAddr));
- sa = next;
- }
+}
+
+void
+afs_MarkAllServersUp(void)
+{
+ int i;
+ struct server *ts;
+ struct srvAddr *sa;
+
+ ObtainWriteLock(&afs_xserver, 721);
+ ObtainWriteLock(&afs_xsrvAddr, 722);
+ for (i = 0; i< NSERVERS; i++) {
+ for (ts = afs_servers[i]; ts; ts = ts->next) {
+ for (sa = ts->addr; sa; sa = sa->next_sa) {
+ afs_MarkServerUpOrDown(sa, 0);
+ }
+ }
}
+ ReleaseWriteLock(&afs_xsrvAddr);
+ ReleaseWriteLock(&afs_xserver);
}
git://git.openafs.org / openafs.git / blobdiff