| File: | afs/afs_server.c |
| Location: | line 786, column 5 |
| Description: | Value stored to 'rxconns' is never read |
| 1 | /* |
| 2 | * Copyright 2000, International Business Machines Corporation and others. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 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 |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Implements: |
| 12 | * afs_MarkServerUpOrDown |
| 13 | * afs_ServerDown |
| 14 | * afs_CountServers |
| 15 | * afs_CheckServers |
| 16 | * afs_FindServer |
| 17 | * afs_random |
| 18 | * afs_randomMod127 |
| 19 | * afs_SortServers |
| 20 | * afsi_SetServerIPRank |
| 21 | * afs_GetServer |
| 22 | * afs_ActivateServer |
| 23 | * |
| 24 | * |
| 25 | * Local: |
| 26 | * HaveCallBacksFrom |
| 27 | * CheckVLServer |
| 28 | * afs_SortOneServer |
| 29 | * afs_SetServerPrefs |
| 30 | * |
| 31 | */ |
| 32 | #include <afsconfig.h> |
| 33 | #include "afs/param.h" |
| 34 | |
| 35 | |
| 36 | #include "afs/stds.h" |
| 37 | #include "afs/sysincludes.h" /* Standard vendor system headers */ |
| 38 | |
| 39 | #if !defined(UKERNEL1) |
| 40 | #if !defined(AFS_LINUX20_ENV) |
| 41 | #include <net/if.h> |
| 42 | #endif |
| 43 | #include <netinet/in.h> |
| 44 | |
| 45 | #ifdef AFS_SGI62_ENV |
| 46 | #include "h/hashing.h" |
| 47 | #endif |
| 48 | #if !defined(AFS_HPUX110_ENV) && !defined(AFS_LINUX20_ENV) && !defined(AFS_DARWIN_ENV) |
| 49 | #include <netinet/in_var.h> |
| 50 | #endif /* AFS_HPUX110_ENV */ |
| 51 | #ifdef AFS_DARWIN_ENV |
| 52 | #include <net/if_var.h> |
| 53 | #endif |
| 54 | #endif /* !defined(UKERNEL) */ |
| 55 | |
| 56 | #include "afsincludes.h" /* Afs-based standard headers */ |
| 57 | #include "afs/afs_stats.h" /* afs statistics */ |
| 58 | #include "rx/rx_multi.h" |
| 59 | |
| 60 | #if defined(AFS_SUN5_ENV) |
| 61 | #include <inet/led.h> |
| 62 | #include <inet/common.h> |
| 63 | #include <netinet/ip6.h> |
| 64 | #define ipif_local_addr ipif_lcl_addr |
| 65 | #ifndef V4_PART_OF_V6 |
| 66 | # define V4_PART_OF_V6(v6) v6.s6_addr32[3] |
| 67 | #endif |
| 68 | #include <inet/ip.h> |
| 69 | #endif |
| 70 | |
| 71 | /* Exported variables */ |
| 72 | afs_rwlock_t afs_xserver; /* allocation lock for servers */ |
| 73 | struct server *afs_setTimeHost = 0; /* last host we used for time */ |
| 74 | struct server *afs_servers[NSERVERS16]; /* Hashed by server`s uuid & 1st ip */ |
| 75 | afs_rwlock_t afs_xsrvAddr; /* allocation lock for srvAddrs */ |
| 76 | struct srvAddr *afs_srvAddrs[NSERVERS16]; /* Hashed by server's ip */ |
| 77 | |
| 78 | |
| 79 | /* debugging aids - number of alloc'd server and srvAddr structs. */ |
| 80 | int afs_reuseServers = 0; |
| 81 | int afs_reuseSrvAddrs = 0; |
| 82 | int afs_totalServers = 0; |
| 83 | int afs_totalSrvAddrs = 0; |
| 84 | |
| 85 | |
| 86 | |
| 87 | static struct afs_stats_SrvUpDownInfo * |
| 88 | GetUpDownStats(struct server *srv) |
| 89 | { |
| 90 | struct afs_stats_SrvUpDownInfo *upDownP; |
| 91 | u_short fsport = AFS_FSPORT((unsigned short) (__builtin_constant_p(7000) ? (__uint16_t)( ((__uint16_t)(7000)) << 8 | ((__uint16_t)(7000)) >> 8) : __bswap16_var(7000))); |
| 92 | |
| 93 | if (srv->cell) |
| 94 | fsport = srv->cell->fsport; |
| 95 | |
| 96 | if (srv->addr->sa_portal == fsport) |
| 97 | upDownP = afs_stats_cmperf.fs_UpDown; |
| 98 | else |
| 99 | upDownP = afs_stats_cmperf.vl_UpDown; |
| 100 | |
| 101 | if (srv->cell && afs_IsPrimaryCell(srv->cell)) |
| 102 | return &upDownP[AFS_STATS_UPDOWN_IDX_SAME_CELL0]; |
| 103 | else |
| 104 | return &upDownP[AFS_STATS_UPDOWN_IDX_DIFF_CELL1]; |
| 105 | } |
| 106 | |
| 107 | |
| 108 | /*------------------------------------------------------------------------ |
| 109 | * afs_MarkServerUpOrDown |
| 110 | * |
| 111 | * Description: |
| 112 | * Mark the given server up or down, and track its uptime stats. |
| 113 | * |
| 114 | * Arguments: |
| 115 | * a_serverP : Ptr to server record to fiddle with. |
| 116 | * a_isDown : Is the server is to be marked down? |
| 117 | * |
| 118 | * Returns: |
| 119 | * Nothing. |
| 120 | * |
| 121 | * Environment: |
| 122 | * The CM server structures must be write-locked. |
| 123 | * |
| 124 | * Side Effects: |
| 125 | * As advertised. |
| 126 | *------------------------------------------------------------------------*/ |
| 127 | |
| 128 | void |
| 129 | afs_MarkServerUpOrDown(struct srvAddr *sa, int a_isDown) |
| 130 | { |
| 131 | struct server *a_serverP = sa->server; |
| 132 | struct srvAddr *sap; |
| 133 | osi_timeval_t currTime, *currTimeP; /*Current time */ |
| 134 | afs_int32 downTime; /*Computed downtime, in seconds */ |
| 135 | struct afs_stats_SrvUpDownInfo *upDownP; /*Ptr to up/down info record */ |
| 136 | |
| 137 | /* |
| 138 | * If the server record is marked the same as the new status we've |
| 139 | * been fed, then there isn't much to be done. |
| 140 | */ |
| 141 | if ((a_isDown && (sa->sa_flags & SRVADDR_ISDOWN0x20)) |
| 142 | || (!a_isDown && !(sa->sa_flags & SRVADDR_ISDOWN0x20))) |
| 143 | return; |
| 144 | |
| 145 | if (a_isDown) { |
| 146 | sa->sa_flags |= SRVADDR_ISDOWN0x20; |
| 147 | for (sap = a_serverP->addr; sap; sap = sap->next_sa) { |
| 148 | if (!(sap->sa_flags & SRVADDR_ISDOWN0x20)) { |
| 149 | /* Not all ips are up so don't bother with the |
| 150 | * server's up/down stats */ |
| 151 | return; |
| 152 | } |
| 153 | } |
| 154 | /* |
| 155 | * All ips are down we treat the whole server down |
| 156 | */ |
| 157 | a_serverP->flags |= SRVR_ISDOWN0x20; |
| 158 | /* |
| 159 | * If this was our time server, search for another time server |
| 160 | */ |
| 161 | if (a_serverP == afs_setTimeHost) |
| 162 | afs_setTimeHost = 0; |
| 163 | } else { |
| 164 | sa->sa_flags &= ~SRVADDR_ISDOWN0x20; |
| 165 | /* If any ips are up, the server is also marked up */ |
| 166 | a_serverP->flags &= ~SRVR_ISDOWN0x20; |
| 167 | for (sap = a_serverP->addr; sap; sap = sap->next_sa) { |
| 168 | if (sap->sa_flags & SRVADDR_ISDOWN0x20) { |
| 169 | /* Not all ips are up so don't bother with the |
| 170 | * server's up/down stats */ |
| 171 | return; |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | #ifndef AFS_NOSTATS |
| 176 | /* |
| 177 | * Compute the current time and which overall stats record is to be |
| 178 | * updated; we'll need them one way or another. |
| 179 | */ |
| 180 | currTimeP = &currTime; |
| 181 | osi_GetuTime(currTimeP)osi_GetTime(currTimeP); |
| 182 | |
| 183 | upDownP = GetUpDownStats(a_serverP); |
| 184 | |
| 185 | if (a_isDown) { |
| 186 | /* |
| 187 | * Server going up -> down; remember the beginning of this |
| 188 | * downtime incident. |
| 189 | */ |
| 190 | a_serverP->lastDowntimeStart = currTime.tv_sec; |
| 191 | |
| 192 | (upDownP->numDownRecords)++; |
| 193 | (upDownP->numUpRecords)--; |
| 194 | } /*Server being marked down */ |
| 195 | else { |
| 196 | /* |
| 197 | * Server going down -> up; remember everything about this |
| 198 | * newly-completed downtime incident. |
| 199 | */ |
| 200 | downTime = currTime.tv_sec - a_serverP->lastDowntimeStart; |
| 201 | (a_serverP->numDowntimeIncidents)++; |
| 202 | a_serverP->sumOfDowntimes += downTime; |
| 203 | |
| 204 | (upDownP->numUpRecords)++; |
| 205 | (upDownP->numDownRecords)--; |
| 206 | (upDownP->numDowntimeIncidents)++; |
| 207 | if (a_serverP->numDowntimeIncidents == 1) |
| 208 | (upDownP->numRecordsNeverDown)--; |
| 209 | upDownP->sumOfDowntimes += downTime; |
| 210 | if ((upDownP->shortestDowntime == 0) |
| 211 | || (downTime < upDownP->shortestDowntime)) |
| 212 | upDownP->shortestDowntime = downTime; |
| 213 | if ((upDownP->longestDowntime == 0) |
| 214 | || (downTime > upDownP->longestDowntime)) |
| 215 | upDownP->longestDowntime = downTime; |
| 216 | |
| 217 | |
| 218 | if (downTime <= AFS_STATS_MAX_DOWNTIME_DURATION_BUCKET0600) |
| 219 | (upDownP->downDurations[0])++; |
| 220 | else if (downTime <= AFS_STATS_MAX_DOWNTIME_DURATION_BUCKET11800) |
| 221 | (upDownP->downDurations[1])++; |
| 222 | else if (downTime <= AFS_STATS_MAX_DOWNTIME_DURATION_BUCKET23600) |
| 223 | (upDownP->downDurations[2])++; |
| 224 | else if (downTime <= AFS_STATS_MAX_DOWNTIME_DURATION_BUCKET37200) |
| 225 | (upDownP->downDurations[3])++; |
| 226 | else if (downTime <= AFS_STATS_MAX_DOWNTIME_DURATION_BUCKET414400) |
| 227 | (upDownP->downDurations[4])++; |
| 228 | else if (downTime <= AFS_STATS_MAX_DOWNTIME_DURATION_BUCKET528800) |
| 229 | (upDownP->downDurations[5])++; |
| 230 | else |
| 231 | (upDownP->downDurations[6])++; |
| 232 | |
| 233 | } /*Server being marked up */ |
| 234 | #endif |
| 235 | } /*MarkServerUpOrDown */ |
| 236 | |
| 237 | |
| 238 | afs_int32 |
| 239 | afs_ServerDown(struct srvAddr *sa) |
| 240 | { |
| 241 | struct server *aserver = sa->server; |
| 242 | |
| 243 | AFS_STATCNT(ServerDown)((afs_cmstats.callInfo.C_ServerDown)++); |
| 244 | if (aserver->flags & SRVR_ISDOWN0x20 || sa->sa_flags & SRVADDR_ISDOWN0x20) |
| 245 | return 0; |
| 246 | afs_MarkServerUpOrDown(sa, SRVR_ISDOWN0x20); |
| 247 | if (sa->sa_portal == aserver->cell->vlport) |
| 248 | print_internet_address |
| 249 | ("afs: Lost contact with volume location server ", sa, "", 1); |
| 250 | else |
| 251 | print_internet_address("afs: Lost contact with file server ", sa, "", |
| 252 | 1); |
| 253 | return 1; |
| 254 | } /*ServerDown */ |
| 255 | |
| 256 | |
| 257 | /* return true if we have any callback promises from this server */ |
| 258 | int |
| 259 | afs_HaveCallBacksFrom(struct server *aserver) |
| 260 | { |
| 261 | afs_int32 now; |
| 262 | int i; |
| 263 | struct vcache *tvc; |
| 264 | |
| 265 | AFS_STATCNT(HaveCallBacksFrom)((afs_cmstats.callInfo.C_HaveCallBacksFrom)++); |
| 266 | now = osi_Time()(time(((void *)0))); /* for checking for expired callbacks */ |
| 267 | for (i = 0; i < VCSIZE1024; i++) { /* for all guys in the hash table */ |
| 268 | for (tvc = afs_vhashT[i]; tvc; tvc = tvc->hnext) { |
| 269 | /* |
| 270 | * Check to see if this entry has an unexpired callback promise |
| 271 | * from the required host |
| 272 | */ |
| 273 | if (aserver == tvc->callback && tvc->cbExpires >= now |
| 274 | && ((tvc->f.states & CRO0x00000004) == 0)) |
| 275 | return 1; |
| 276 | } |
| 277 | } |
| 278 | return 0; |
| 279 | |
| 280 | } /*HaveCallBacksFrom */ |
| 281 | |
| 282 | |
| 283 | static void |
| 284 | CheckVLServer(struct srvAddr *sa, struct vrequest *areq) |
| 285 | { |
| 286 | struct server *aserver = sa->server; |
| 287 | struct afs_conn *tc; |
| 288 | afs_int32 code; |
| 289 | struct rx_connection *rxconn; |
| 290 | |
| 291 | AFS_STATCNT(CheckVLServer)((afs_cmstats.callInfo.C_CheckVLServer)++); |
| 292 | /* Ping dead servers to see if they're back */ |
| 293 | if (!((aserver->flags & SRVR_ISDOWN0x20) || (sa->sa_flags & SRVADDR_ISDOWN0x20)) |
| 294 | || (aserver->flags & SRVR_ISGONE0x80)) |
| 295 | return; |
| 296 | if (!aserver->cell) |
| 297 | return; /* can't do much */ |
| 298 | |
| 299 | tc = afs_ConnByHost(aserver, aserver->cell->vlport, |
| 300 | aserver->cell->cellNum, areq, 1, SHARED_LOCK4, &rxconn); |
| 301 | if (!tc) |
| 302 | return; |
| 303 | rx_SetConnDeadTime(rxconn, 3); |
| 304 | |
| 305 | RX_AFS_GUNLOCK()do { do { if (!(pthread_self() == afs_global_owner)) { osi_Panic ("afs global lock not held"); } } while(0); memset(&afs_global_owner , 0, sizeof(pthread_t)); do{if (!(pthread_mutex_unlock(&afs_global_lock ) == 0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 305);}while(0); } while(0); |
| 306 | code = VL_ProbeServer(rxconn); |
| 307 | RX_AFS_GLOCK()do { do{if (!(pthread_mutex_lock(&afs_global_lock) == 0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 307);}while(0); afs_global_owner = pthread_self(); } while( 0); |
| 308 | rx_SetConnDeadTime(rxconn, afs_rx_deadtime); |
| 309 | afs_PutConn(tc, rxconn, SHARED_LOCK4); |
| 310 | /* |
| 311 | * If probe worked, or probe call not yet defined (for compatibility |
| 312 | * with old vlsevers), then we treat this server as running again |
| 313 | */ |
| 314 | if (code == 0 || (code <= -450 && code >= -470)) { |
| 315 | if (tc->parent->srvr == sa) { |
| 316 | afs_MarkServerUpOrDown(sa, 0); |
| 317 | print_internet_address("afs: volume location server ", sa, |
| 318 | " is back up", 2); |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | } /*CheckVLServer */ |
| 323 | |
| 324 | |
| 325 | #ifndef AFS_MINCHANGE2 /* So that some can increase it in param.h */ |
| 326 | #define AFS_MINCHANGE2 2 /* min change we'll bother with */ |
| 327 | #endif |
| 328 | #ifndef AFS_MAXCHANGEBACK10 |
| 329 | #define AFS_MAXCHANGEBACK10 10 /* max seconds we'll set a clock back at once */ |
| 330 | #endif |
| 331 | |
| 332 | |
| 333 | /*------------------------------------------------------------------------ |
| 334 | * EXPORTED afs_CountServers |
| 335 | * |
| 336 | * Description: |
| 337 | * Originally meant to count the number of servers and determining |
| 338 | * up/down info, this routine will now simply sum up all of the |
| 339 | * server record ages. All other up/down information is kept on the |
| 340 | * fly. |
| 341 | * |
| 342 | * Arguments: |
| 343 | * None. |
| 344 | * |
| 345 | * Returns: |
| 346 | * Nothing. |
| 347 | * |
| 348 | * Environment: |
| 349 | * This routine locks afs_xserver for write for the duration. |
| 350 | * |
| 351 | * Side Effects: |
| 352 | * Set CM perf stats field sumOfRecordAges for all server record |
| 353 | * entries. |
| 354 | *------------------------------------------------------------------------*/ |
| 355 | |
| 356 | void |
| 357 | afs_CountServers(void) |
| 358 | { |
| 359 | int currIdx; /*Curr idx into srv table */ |
| 360 | struct server *currSrvP; /*Ptr to curr server record */ |
| 361 | afs_int32 currChainLen; /*Length of curr hash chain */ |
| 362 | osi_timeval_t currTime; /*Current time */ |
| 363 | osi_timeval_t *currTimeP; /*Ptr to above */ |
| 364 | afs_int32 srvRecordAge; /*Age of server record, in secs */ |
| 365 | struct afs_stats_SrvUpDownInfo *upDownP; /*Ptr to current up/down |
| 366 | * info being manipulated */ |
| 367 | |
| 368 | /* |
| 369 | * Write-lock the server table so we don't get any interference. |
| 370 | */ |
| 371 | ObtainReadLock(&afs_xserver)do { ; if (!((&afs_xserver)->excl_locked & 2)) ((& afs_xserver)->readers_reading)++; else Afs_Lock_Obtain(& afs_xserver, 1); (&afs_xserver)->pid_last_reader = (get_user_struct ()->u_procp->p_pid ); } while (0); |
| 372 | |
| 373 | /* |
| 374 | * Iterate over each hash index in the server table, walking down each |
| 375 | * chain and tallying what we haven't computed from the records there on |
| 376 | * the fly. First, though, initialize the tallies that will change. |
| 377 | */ |
| 378 | afs_stats_cmperf.srvMaxChainLength = 0; |
| 379 | |
| 380 | afs_stats_cmperf.fs_UpDown[0].sumOfRecordAges = 0; |
| 381 | afs_stats_cmperf.fs_UpDown[0].ageOfYoungestRecord = 0; |
| 382 | afs_stats_cmperf.fs_UpDown[0].ageOfOldestRecord = 0; |
| 383 | memset(afs_stats_cmperf.fs_UpDown[0].downIncidents, 0, |
| 384 | AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS6 * sizeof(afs_int32)); |
| 385 | |
| 386 | afs_stats_cmperf.fs_UpDown[1].sumOfRecordAges = 0; |
| 387 | afs_stats_cmperf.fs_UpDown[1].ageOfYoungestRecord = 0; |
| 388 | afs_stats_cmperf.fs_UpDown[1].ageOfOldestRecord = 0; |
| 389 | memset(afs_stats_cmperf.fs_UpDown[1].downIncidents, 0, |
| 390 | AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS6 * sizeof(afs_int32)); |
| 391 | |
| 392 | afs_stats_cmperf.vl_UpDown[0].sumOfRecordAges = 0; |
| 393 | afs_stats_cmperf.vl_UpDown[0].ageOfYoungestRecord = 0; |
| 394 | afs_stats_cmperf.vl_UpDown[0].ageOfOldestRecord = 0; |
| 395 | memset(afs_stats_cmperf.vl_UpDown[0].downIncidents, 0, |
| 396 | AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS6 * sizeof(afs_int32)); |
| 397 | |
| 398 | afs_stats_cmperf.vl_UpDown[1].sumOfRecordAges = 0; |
| 399 | afs_stats_cmperf.vl_UpDown[1].ageOfYoungestRecord = 0; |
| 400 | afs_stats_cmperf.vl_UpDown[1].ageOfOldestRecord = 0; |
| 401 | memset(afs_stats_cmperf.vl_UpDown[1].downIncidents, 0, |
| 402 | AFS_STATS_NUM_DOWNTIME_INCIDENTS_BUCKETS6 * sizeof(afs_int32)); |
| 403 | |
| 404 | /* |
| 405 | * Compute the current time, used to figure out server record ages. |
| 406 | */ |
| 407 | currTimeP = &currTime; |
| 408 | osi_GetuTime(currTimeP)osi_GetTime(currTimeP); |
| 409 | |
| 410 | /* |
| 411 | * Sweep the server hash table, tallying all we need to know. |
| 412 | */ |
| 413 | for (currIdx = 0; currIdx < NSERVERS16; currIdx++) { |
| 414 | currChainLen = 0; |
| 415 | for (currSrvP = afs_servers[currIdx]; currSrvP; |
| 416 | currSrvP = currSrvP->next) { |
| 417 | /* |
| 418 | * Bump the current chain length. |
| 419 | */ |
| 420 | currChainLen++; |
| 421 | |
| 422 | /* |
| 423 | * Any further tallying for this record will only be done if it has |
| 424 | * been activated. |
| 425 | */ |
| 426 | if ((currSrvP->flags & AFS_SERVER_FLAG_ACTIVATED0x01) |
| 427 | && currSrvP->addr && currSrvP->cell) { |
| 428 | |
| 429 | /* |
| 430 | * Compute the current server record's age, then remember it |
| 431 | * in the appropriate places. |
| 432 | */ |
| 433 | srvRecordAge = currTime.tv_sec - currSrvP->activationTime; |
| 434 | upDownP = GetUpDownStats(currSrvP); |
| 435 | upDownP->sumOfRecordAges += srvRecordAge; |
| 436 | if ((upDownP->ageOfYoungestRecord == 0) |
| 437 | || (srvRecordAge < upDownP->ageOfYoungestRecord)) |
| 438 | upDownP->ageOfYoungestRecord = srvRecordAge; |
| 439 | if ((upDownP->ageOfOldestRecord == 0) |
| 440 | || (srvRecordAge > upDownP->ageOfOldestRecord)) |
| 441 | upDownP->ageOfOldestRecord = srvRecordAge; |
| 442 | |
| 443 | if (currSrvP->numDowntimeIncidents <= |
| 444 | AFS_STATS_MAX_DOWNTIME_INCIDENTS_BUCKET00) |
| 445 | (upDownP->downIncidents[0])++; |
| 446 | else if (currSrvP->numDowntimeIncidents <= |
| 447 | AFS_STATS_MAX_DOWNTIME_INCIDENTS_BUCKET11) |
| 448 | (upDownP->downIncidents[1])++; |
| 449 | else if (currSrvP->numDowntimeIncidents <= |
| 450 | AFS_STATS_MAX_DOWNTIME_INCIDENTS_BUCKET25) |
| 451 | (upDownP->downIncidents[2])++; |
| 452 | else if (currSrvP->numDowntimeIncidents <= |
| 453 | AFS_STATS_MAX_DOWNTIME_INCIDENTS_BUCKET310) |
| 454 | (upDownP->downIncidents[3])++; |
| 455 | else if (currSrvP->numDowntimeIncidents <= |
| 456 | AFS_STATS_MAX_DOWNTIME_INCIDENTS_BUCKET450) |
| 457 | (upDownP->downIncidents[4])++; |
| 458 | else |
| 459 | (upDownP->downIncidents[5])++; |
| 460 | |
| 461 | |
| 462 | } /*Current server has been active */ |
| 463 | } /*Walk this chain */ |
| 464 | |
| 465 | /* |
| 466 | * Before advancing to the next chain, remember facts about this one. |
| 467 | */ |
| 468 | if (currChainLen > afs_stats_cmperf.srvMaxChainLength) { |
| 469 | /* |
| 470 | * We beat out the former champion (which was initially set to 0 |
| 471 | * here). Mark down the new winner, and also remember if it's an |
| 472 | * all-time winner. |
| 473 | */ |
| 474 | afs_stats_cmperf.srvMaxChainLength = currChainLen; |
| 475 | if (currChainLen > afs_stats_cmperf.srvMaxChainLengthHWM) |
| 476 | afs_stats_cmperf.srvMaxChainLengthHWM = currChainLen; |
| 477 | } /*Update chain length maximum */ |
| 478 | } /*For each hash chain */ |
| 479 | |
| 480 | /* |
| 481 | * We're done. Unlock the server table before returning to our caller. |
| 482 | */ |
| 483 | ReleaseReadLock(&afs_xserver)do { ; if (!(--((&afs_xserver)->readers_reading)) && (&afs_xserver)->wait_states) Afs_Lock_ReleaseW(&afs_xserver ) ; if ( (&afs_xserver)->pid_last_reader == (get_user_struct ()->u_procp->p_pid ) ) (&afs_xserver)->pid_last_reader =0; } while (0); |
| 484 | |
| 485 | } /*afs_CountServers */ |
| 486 | |
| 487 | |
| 488 | void |
| 489 | ForceAllNewConnections(void) |
| 490 | { |
| 491 | int srvAddrCount; |
| 492 | struct srvAddr **addrs; |
| 493 | struct srvAddr *sa; |
| 494 | afs_int32 i, j; |
| 495 | |
| 496 | ObtainReadLock(&afs_xserver)do { ; if (!((&afs_xserver)->excl_locked & 2)) ((& afs_xserver)->readers_reading)++; else Afs_Lock_Obtain(& afs_xserver, 1); (&afs_xserver)->pid_last_reader = (get_user_struct ()->u_procp->p_pid ); } while (0); /* Necessary? */ |
| 497 | ObtainReadLock(&afs_xsrvAddr)do { ; if (!((&afs_xsrvAddr)->excl_locked & 2)) (( &afs_xsrvAddr)->readers_reading)++; else Afs_Lock_Obtain (&afs_xsrvAddr, 1); (&afs_xsrvAddr)->pid_last_reader = (get_user_struct()->u_procp->p_pid ); } while (0); |
| 498 | |
| 499 | srvAddrCount = 0; |
| 500 | for (i = 0; i < NSERVERS16; i++) { |
| 501 | for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) { |
| 502 | srvAddrCount++; |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | addrs = afs_osi_Alloc(srvAddrCount * sizeof(*addrs)); |
| 507 | osi_Assert(addrs != NULL)(void)((addrs != ((void *)0)) || (osi_AssertFailK( "addrs != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 507), 0)); |
| 508 | j = 0; |
| 509 | for (i = 0; i < NSERVERS16; i++) { |
| 510 | for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) { |
| 511 | if (j >= srvAddrCount) |
| 512 | break; |
| 513 | addrs[j++] = sa; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | ReleaseReadLock(&afs_xsrvAddr)do { ; if (!(--((&afs_xsrvAddr)->readers_reading)) && (&afs_xsrvAddr)->wait_states) Afs_Lock_ReleaseW(& afs_xsrvAddr) ; if ( (&afs_xsrvAddr)->pid_last_reader == (get_user_struct()->u_procp->p_pid ) ) (&afs_xsrvAddr )->pid_last_reader =0; } while (0); |
| 518 | ReleaseReadLock(&afs_xserver)do { ; if (!(--((&afs_xserver)->readers_reading)) && (&afs_xserver)->wait_states) Afs_Lock_ReleaseW(&afs_xserver ) ; if ( (&afs_xserver)->pid_last_reader == (get_user_struct ()->u_procp->p_pid ) ) (&afs_xserver)->pid_last_reader =0; } while (0); |
| 519 | for (i = 0; i < j; i++) { |
| 520 | sa = addrs[i]; |
| 521 | ForceNewConnections(sa); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | static void |
| 526 | CkSrv_MarkUpDown(struct afs_conn **conns, int nconns, afs_int32 *results) |
| 527 | { |
| 528 | struct srvAddr *sa; |
| 529 | struct afs_conn *tc; |
| 530 | afs_int32 i; |
| 531 | |
| 532 | for(i = 0; i < nconns; i++){ |
| 533 | tc = conns[i]; |
| 534 | sa = tc->parent->srvr; |
| 535 | |
| 536 | if (( results[i] >= 0 ) && (sa->sa_flags & SRVADDR_ISDOWN0x20) && |
| 537 | (tc->parent->srvr == sa)) { |
| 538 | /* server back up */ |
| 539 | print_internet_address("afs: file server ", sa, " is back up", 2); |
| 540 | |
| 541 | ObtainWriteLock(&afs_xserver, 244)do { ; if (!(&afs_xserver)->excl_locked && !(& afs_xserver)->readers_reading) (&afs_xserver) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xserver, 2); (&afs_xserver )->pid_writer = (get_user_struct()->u_procp->p_pid ) ; (&afs_xserver)->src_indicator = 244; } while (0); |
| 542 | ObtainWriteLock(&afs_xsrvAddr, 245)do { ; if (!(&afs_xsrvAddr)->excl_locked && !( &afs_xsrvAddr)->readers_reading) (&afs_xsrvAddr) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xsrvAddr, 2); (&afs_xsrvAddr)->pid_writer = (get_user_struct()-> u_procp->p_pid ); (&afs_xsrvAddr)->src_indicator = 245 ; } while (0); |
| 543 | afs_MarkServerUpOrDown(sa, 0); |
| 544 | ReleaseWriteLock(&afs_xsrvAddr)do { ; (&afs_xsrvAddr)->excl_locked &= ~2; if ((& afs_xsrvAddr)->wait_states) Afs_Lock_ReleaseR(&afs_xsrvAddr ); (&afs_xsrvAddr)->pid_writer=0; } while (0); |
| 545 | ReleaseWriteLock(&afs_xserver)do { ; (&afs_xserver)->excl_locked &= ~2; if ((& afs_xserver)->wait_states) Afs_Lock_ReleaseR(&afs_xserver ); (&afs_xserver)->pid_writer=0; } while (0); |
| 546 | |
| 547 | if (afs_waitForeverCount) { |
| 548 | afs_osi_Wakeup(&afs_waitForever); |
| 549 | } |
| 550 | } else { |
| 551 | if (results[i] < 0) { |
| 552 | /* server crashed */ |
| 553 | afs_ServerDown(sa); |
| 554 | ForceNewConnections(sa); /* multi homed clients */ |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | void |
| 561 | CkSrv_SetTime(struct rx_connection **rxconns, int nconns, int nservers, |
| 562 | struct afs_conn **conns, struct srvAddr **addrs) |
| 563 | { |
| 564 | struct afs_conn *tc; |
| 565 | afs_int32 start, end = 0, delta; |
| 566 | osi_timeval_t tv; |
| 567 | struct srvAddr *sa; |
| 568 | afs_int32 *conntimer, *results, *deltas; |
| 569 | afs_int32 i = 0; |
| 570 | char tbuffer[CVBS12]; |
| 571 | |
| 572 | conntimer = afs_osi_Alloc(nservers * sizeof (afs_int32)); |
| 573 | osi_Assert(conntimer != NULL)(void)((conntimer != ((void *)0)) || (osi_AssertFailK( "conntimer != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 573), 0)); |
| 574 | results = afs_osi_Alloc(nservers * sizeof (afs_int32)); |
| 575 | osi_Assert(results != NULL)(void)((results != ((void *)0)) || (osi_AssertFailK( "results != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 575), 0)); |
| 576 | deltas = afs_osi_Alloc(nservers * sizeof (afs_int32)); |
| 577 | osi_Assert(deltas != NULL)(void)((deltas != ((void *)0)) || (osi_AssertFailK( "deltas != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 577), 0)); |
| 578 | |
| 579 | /* make sure we're starting from zero */ |
| 580 | memset(&deltas, 0, sizeof(deltas)); |
| 581 | |
| 582 | start = osi_Time()(time(((void *)0))); /* time the gettimeofday call */ |
| 583 | AFS_GUNLOCK()do { do { if (!(pthread_self() == afs_global_owner)) { osi_Panic ("afs global lock not held"); } } while(0); memset(&afs_global_owner , 0, sizeof(pthread_t)); do{if (!(pthread_mutex_unlock(&afs_global_lock ) == 0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 583);}while(0); } while(0); |
| 584 | if ( afs_setTimeHost == NULL((void *)0) ) { |
| 585 | multi_Rx(rxconns,nconns)do { struct multi_handle *multi_h; int multi_i; int multi_i0; afs_int32 multi_error; struct rx_call *multi_call; multi_h = multi_Init(rxconns, nconns); for (multi_i0 = multi_i = 0; ; multi_i = multi_i0 ) |
| 586 | { |
| 587 | tv.tv_sec = tv.tv_usec = 0; |
| 588 | multi_RXAFS_GetTime(if (multi_h->nextReady == multi_h->firstNotReady && multi_i < multi_h->nConns) { multi_call = multi_h-> calls[multi_i]; if (multi_call) { StartRXAFS_GetTime(multi_call ); rx_FlushWrite(multi_call); } multi_i0++; continue; } if (( multi_i = multi_Select(multi_h)) < 0) break; multi_call = multi_h ->calls[multi_i]; multi_error = rx_EndCall(multi_call, EndRXAFS_GetTime (multi_call, (afs_uint32 *)&tv.tv_sec, (afs_uint32 *)& tv.tv_usec)); multi_h->calls[multi_i] = (struct rx_call *) 0 |
| 589 | (afs_uint32 *)&tv.tv_sec, (afs_uint32 *)&tv.tv_usec)if (multi_h->nextReady == multi_h->firstNotReady && multi_i < multi_h->nConns) { multi_call = multi_h-> calls[multi_i]; if (multi_call) { StartRXAFS_GetTime(multi_call ); rx_FlushWrite(multi_call); } multi_i0++; continue; } if (( multi_i = multi_Select(multi_h)) < 0) break; multi_call = multi_h ->calls[multi_i]; multi_error = rx_EndCall(multi_call, EndRXAFS_GetTime (multi_call, (afs_uint32 *)&tv.tv_sec, (afs_uint32 *)& tv.tv_usec)); multi_h->calls[multi_i] = (struct rx_call *) 0; |
| 590 | tc = conns[multi_i]; |
| 591 | sa = tc->parent->srvr; |
| 592 | if (conntimer[multi_i] == 1) |
| 593 | rx_SetConnDeadTime(rxconns[multi_i], afs_rx_deadtime); |
| 594 | end = osi_Time()(time(((void *)0))); |
| 595 | results[multi_i]=multi_error; |
| 596 | if ((start == end) && !multi_error) |
| 597 | deltas[multi_i] = end - tv.tv_sec; |
| 598 | } multi_Endmulti_Finalize(multi_h); } while (0); |
| 599 | } else { /* find and query setTimeHost only */ |
| 600 | for ( i = 0 ; i < nservers ; i++ ) { |
| 601 | if ( conns[i] == NULL((void *)0) || conns[i]->parent->srvr == NULL((void *)0) ) |
| 602 | continue; |
| 603 | if ( conns[i]->parent->srvr->server == afs_setTimeHost ) { |
| 604 | tv.tv_sec = tv.tv_usec = 0; |
| 605 | results[i] = RXAFS_GetTime(rxconns[i], |
| 606 | (afs_uint32 *)&tv.tv_sec, |
| 607 | (afs_uint32 *)&tv.tv_usec); |
| 608 | end = osi_Time()(time(((void *)0))); |
| 609 | if ((start == end) && !results[i]) |
| 610 | deltas[i] = end - tv.tv_sec; |
| 611 | break; |
| 612 | } |
| 613 | } |
| 614 | } |
| 615 | AFS_GLOCK()do { do{if (!(pthread_mutex_lock(&afs_global_lock) == 0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 615);}while(0); afs_global_owner = pthread_self(); } while( 0); |
| 616 | |
| 617 | if ( afs_setTimeHost == NULL((void *)0) ) |
| 618 | CkSrv_MarkUpDown(conns, nconns, results); |
| 619 | else /* We lack info for other than this host */ |
| 620 | CkSrv_MarkUpDown(&conns[i], 1, &results[i]); |
| 621 | |
| 622 | /* |
| 623 | * If we're supposed to set the time, and the call worked |
| 624 | * quickly (same second response) and this is the host we |
| 625 | * use for the time and the time is really different, then |
| 626 | * really set the time |
| 627 | */ |
| 628 | if (afs_setTime != 0) { |
| 629 | for (i=0; i<nconns; i++) { |
| 630 | delta = deltas[i]; |
| 631 | tc = conns[i]; |
| 632 | sa = tc->parent->srvr; |
| 633 | |
| 634 | if ((tc->parent->srvr->server == afs_setTimeHost || |
| 635 | /* Sync only to a server in the local cell */ |
| 636 | (afs_setTimeHost == (struct server *)0 && |
| 637 | afs_IsPrimaryCell(sa->server->cell)))) { |
| 638 | /* set the time */ |
| 639 | char msgbuf[90]; /* strlen("afs: setting clock...") + slop */ |
| 640 | delta = end - tv.tv_sec; /* how many secs fast we are */ |
| 641 | |
| 642 | afs_setTimeHost = tc->parent->srvr->server; |
| 643 | /* see if clock has changed enough to make it worthwhile */ |
| 644 | if (delta >= AFS_MINCHANGE2 || delta <= -AFS_MINCHANGE2) { |
| 645 | end = osi_Time()(time(((void *)0))); |
| 646 | if (delta > AFS_MAXCHANGEBACK10) { |
| 647 | /* setting clock too far back, just do it a little */ |
| 648 | tv.tv_sec = end - AFS_MAXCHANGEBACK10; |
| 649 | } else { |
| 650 | tv.tv_sec = end - delta; |
| 651 | } |
| 652 | afs_osi_SetTime(&tv); |
| 653 | if (delta > 0) { |
| 654 | strcpy(msgbuf, "afs: setting clock back "); |
| 655 | if (delta > AFS_MAXCHANGEBACK10) { |
| 656 | afs_strcat(msgbuf, |
| 657 | afs_cv2string(&tbuffer[CVBS12], |
| 658 | AFS_MAXCHANGEBACK10)); |
| 659 | afs_strcat(msgbuf, " seconds (of "); |
| 660 | afs_strcat(msgbuf, |
| 661 | afs_cv2string(&tbuffer[CVBS12], |
| 662 | delta - |
| 663 | AFS_MAXCHANGEBACK10)); |
| 664 | afs_strcat(msgbuf, ", via "); |
| 665 | print_internet_address(msgbuf, sa, |
| 666 | "); clock is still fast.", |
| 667 | 0); |
| 668 | } else { |
| 669 | afs_strcat(msgbuf, |
| 670 | afs_cv2string(&tbuffer[CVBS12], delta)); |
| 671 | afs_strcat(msgbuf, " seconds (via "); |
| 672 | print_internet_address(msgbuf, sa, ").", 0); |
| 673 | } |
| 674 | } else { |
| 675 | strcpy(msgbuf, "afs: setting clock ahead "); |
| 676 | afs_strcat(msgbuf, |
| 677 | afs_cv2string(&tbuffer[CVBS12], -delta)); |
| 678 | afs_strcat(msgbuf, " seconds (via "); |
| 679 | print_internet_address(msgbuf, sa, ").", 0); |
| 680 | } |
| 681 | /* We're only going to set it once; why bother looping? */ |
| 682 | break; |
| 683 | } |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | afs_osi_Free(conntimer, nservers * sizeof(afs_int32)); |
| 688 | afs_osi_Free(deltas, nservers * sizeof(afs_int32)); |
| 689 | afs_osi_Free(results, nservers * sizeof(afs_int32)); |
| 690 | } |
| 691 | |
| 692 | void |
| 693 | CkSrv_GetCaps(struct rx_connection **rxconns, int nconns, int nservers, |
| 694 | struct afs_conn **conns, struct srvAddr **addrs) |
| 695 | { |
| 696 | Capabilities *caps; |
| 697 | afs_int32 *results; |
| 698 | afs_int32 i; |
| 699 | struct server *ts; |
| 700 | |
| 701 | caps = afs_osi_Alloc(nservers * sizeof (Capabilities)); |
| 702 | osi_Assert(caps != NULL)(void)((caps != ((void *)0)) || (osi_AssertFailK( "caps != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 702), 0)); |
| 703 | memset(caps, 0, nservers * sizeof(Capabilities)); |
| 704 | |
| 705 | results = afs_osi_Alloc(nservers * sizeof (afs_int32)); |
| 706 | osi_Assert(results != NULL)(void)((results != ((void *)0)) || (osi_AssertFailK( "results != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 706), 0)); |
| 707 | |
| 708 | AFS_GUNLOCK()do { do { if (!(pthread_self() == afs_global_owner)) { osi_Panic ("afs global lock not held"); } } while(0); memset(&afs_global_owner , 0, sizeof(pthread_t)); do{if (!(pthread_mutex_unlock(&afs_global_lock ) == 0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 708);}while(0); } while(0); |
| 709 | multi_Rx(rxconns,nconns)do { struct multi_handle *multi_h; int multi_i; int multi_i0; afs_int32 multi_error; struct rx_call *multi_call; multi_h = multi_Init(rxconns, nconns); for (multi_i0 = multi_i = 0; ; multi_i = multi_i0 ) |
| 710 | { |
| 711 | multi_RXAFS_GetCapabilities(&caps[multi_i])if (multi_h->nextReady == multi_h->firstNotReady && multi_i < multi_h->nConns) { multi_call = multi_h-> calls[multi_i]; if (multi_call) { StartRXAFS_GetCapabilities( multi_call); rx_FlushWrite(multi_call); } multi_i0++; continue ; } if ((multi_i = multi_Select(multi_h)) < 0) break; multi_call = multi_h->calls[multi_i]; multi_error = rx_EndCall(multi_call , EndRXAFS_GetCapabilities(multi_call, &caps[multi_i])); multi_h ->calls[multi_i] = (struct rx_call *) 0; |
| 712 | results[multi_i] = multi_error; |
| 713 | } multi_Endmulti_Finalize(multi_h); } while (0); |
| 714 | AFS_GLOCK()do { do{if (!(pthread_mutex_lock(&afs_global_lock) == 0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 714);}while(0); afs_global_owner = pthread_self(); } while( 0); |
| 715 | |
| 716 | for ( i = 0 ; i < nconns ; i++ ) { |
| 717 | ts = addrs[i]->server; |
| 718 | if ( !ts ) |
| 719 | continue; |
| 720 | ts->capabilities = 0; |
| 721 | ts->flags |= SCAPS_KNOWN0x400; |
| 722 | if ( results[i] == RXGEN_OPCODE-455 ) { |
| 723 | /* Mark server as up - it responded */ |
| 724 | results[i] = 0; |
| 725 | continue; |
| 726 | } |
| 727 | if ( results[i] >= 0 ) |
| 728 | /* we currently handle 32-bits of capabilities */ |
| 729 | if (caps[i].Capabilities_len > 0) { |
| 730 | ts->capabilities = caps[i].Capabilities_val[0]; |
| 731 | xdr_freeafs_xdr_free((xdrproc_t)xdr_Capabilities, &caps[i]); |
| 732 | caps[i].Capabilities_val = NULL((void *)0); |
| 733 | caps[i].Capabilities_len = 0; |
| 734 | } |
| 735 | } |
| 736 | CkSrv_MarkUpDown(conns, nconns, results); |
| 737 | |
| 738 | afs_osi_Free(caps, nservers * sizeof(Capabilities)); |
| 739 | afs_osi_Free(results, nservers * sizeof(afs_int32)); |
| 740 | } |
| 741 | |
| 742 | /* check down servers (if adown), or running servers (if !adown) */ |
| 743 | void |
| 744 | afs_CheckServers(int adown, struct cell *acellp) |
| 745 | { |
| 746 | afs_LoopServers(adown?AFS_LS_DOWN1:AFS_LS_UP0, acellp, 1, CkSrv_GetCaps, |
| 747 | afs_setTime?CkSrv_SetTime:NULL((void *)0)); |
| 748 | } |
| 749 | |
| 750 | /* adown: AFS_LS_UP - check only up |
| 751 | * AFS_LS_DOWN - check only down. |
| 752 | * AFS_LS_ALL - check all */ |
| 753 | void |
| 754 | afs_LoopServers(int adown, struct cell *acellp, int vlalso, |
| 755 | void (*func1) (struct rx_connection **rxconns, int nconns, |
| 756 | int nservers, struct afs_conn **conns, |
| 757 | struct srvAddr **addrs), |
| 758 | void (*func2) (struct rx_connection **rxconns, int nconns, |
| 759 | int nservers, struct afs_conn **conns, |
| 760 | struct srvAddr **addrs)) |
| 761 | { |
| 762 | struct vrequest treq; |
| 763 | struct server *ts; |
| 764 | struct srvAddr *sa; |
| 765 | struct afs_conn *tc = NULL((void *)0); |
| 766 | afs_int32 i, j; |
| 767 | afs_int32 code; |
| 768 | struct unixuser *tu; |
| 769 | int srvAddrCount; |
| 770 | struct srvAddr **addrs; |
| 771 | struct afs_conn **conns; |
| 772 | int nconns; |
| 773 | struct rx_connection **rxconns; |
| 774 | afs_int32 *conntimer, *results; |
| 775 | |
| 776 | AFS_STATCNT(afs_CheckServers)((afs_cmstats.callInfo.C_afs_CheckServers)++); |
| 777 | |
| 778 | /* |
| 779 | * No sense in doing the server checks if we are running in disconnected |
| 780 | * mode |
| 781 | */ |
| 782 | if (AFS_IS_DISCONNECTED(afs_is_disconnected)) |
| 783 | return; |
| 784 | |
| 785 | conns = (struct afs_conn **)0; |
| 786 | rxconns = (struct rx_connection **) 0; |
Value stored to 'rxconns' is never read | |
| 787 | conntimer = 0; |
| 788 | nconns = 0; |
| 789 | |
| 790 | if ((code = afs_InitReq(&treq, afs_osi_credp))) |
| 791 | return; |
| 792 | ObtainReadLock(&afs_xserver)do { ; if (!((&afs_xserver)->excl_locked & 2)) ((& afs_xserver)->readers_reading)++; else Afs_Lock_Obtain(& afs_xserver, 1); (&afs_xserver)->pid_last_reader = (get_user_struct ()->u_procp->p_pid ); } while (0); /* Necessary? */ |
| 793 | ObtainReadLock(&afs_xsrvAddr)do { ; if (!((&afs_xsrvAddr)->excl_locked & 2)) (( &afs_xsrvAddr)->readers_reading)++; else Afs_Lock_Obtain (&afs_xsrvAddr, 1); (&afs_xsrvAddr)->pid_last_reader = (get_user_struct()->u_procp->p_pid ); } while (0); |
| 794 | |
| 795 | srvAddrCount = 0; |
| 796 | for (i = 0; i < NSERVERS16; i++) { |
| 797 | for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) { |
| 798 | srvAddrCount++; |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | addrs = afs_osi_Alloc(srvAddrCount * sizeof(*addrs)); |
| 803 | osi_Assert(addrs != NULL)(void)((addrs != ((void *)0)) || (osi_AssertFailK( "addrs != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 803), 0)); |
| 804 | j = 0; |
| 805 | for (i = 0; i < NSERVERS16; i++) { |
| 806 | for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) { |
| 807 | if (j >= srvAddrCount) |
| 808 | break; |
| 809 | addrs[j++] = sa; |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | ReleaseReadLock(&afs_xsrvAddr)do { ; if (!(--((&afs_xsrvAddr)->readers_reading)) && (&afs_xsrvAddr)->wait_states) Afs_Lock_ReleaseW(& afs_xsrvAddr) ; if ( (&afs_xsrvAddr)->pid_last_reader == (get_user_struct()->u_procp->p_pid ) ) (&afs_xsrvAddr )->pid_last_reader =0; } while (0); |
| 814 | ReleaseReadLock(&afs_xserver)do { ; if (!(--((&afs_xserver)->readers_reading)) && (&afs_xserver)->wait_states) Afs_Lock_ReleaseW(&afs_xserver ) ; if ( (&afs_xserver)->pid_last_reader == (get_user_struct ()->u_procp->p_pid ) ) (&afs_xserver)->pid_last_reader =0; } while (0); |
| 815 | |
| 816 | conns = afs_osi_Alloc(j * sizeof(struct afs_conn *)); |
| 817 | osi_Assert(conns != NULL)(void)((conns != ((void *)0)) || (osi_AssertFailK( "conns != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 817), 0)); |
| 818 | rxconns = afs_osi_Alloc(j * sizeof(struct rx_connection *)); |
| 819 | osi_Assert(rxconns != NULL)(void)((rxconns != ((void *)0)) || (osi_AssertFailK( "rxconns != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 819), 0)); |
| 820 | conntimer = afs_osi_Alloc(j * sizeof (afs_int32)); |
| 821 | osi_Assert(conntimer != NULL)(void)((conntimer != ((void *)0)) || (osi_AssertFailK( "conntimer != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 821), 0)); |
| 822 | results = afs_osi_Alloc(j * sizeof (afs_int32)); |
| 823 | osi_Assert(results != NULL)(void)((results != ((void *)0)) || (osi_AssertFailK( "results != NULL" , "/home/wollman/openafs/src/afs/afs_server.c", 823), 0)); |
| 824 | |
| 825 | for (i = 0; i < j; i++) { |
| 826 | struct rx_connection *rxconn; |
| 827 | sa = addrs[i]; |
| 828 | ts = sa->server; |
| 829 | if (!ts) |
| 830 | continue; |
| 831 | |
| 832 | /* See if a cell to check was specified. If it is spec'd and not |
| 833 | * this server's cell, just skip the server. |
| 834 | */ |
| 835 | if (acellp && acellp != ts->cell) |
| 836 | continue; |
| 837 | |
| 838 | if (((adown==AFS_LS_DOWN1) && !(sa->sa_flags & SRVADDR_ISDOWN0x20)) |
| 839 | || ((adown==AFS_LS_UP0) && (sa->sa_flags & SRVADDR_ISDOWN0x20))) |
| 840 | continue; |
| 841 | |
| 842 | /* check vlserver with special code */ |
| 843 | if (sa->sa_portal == AFS_VLPORT((unsigned short) (__builtin_constant_p(7003) ? (__uint16_t)( ((__uint16_t)(7003)) << 8 | ((__uint16_t)(7003)) >> 8) : __bswap16_var(7003)))) { |
| 844 | if (vlalso) |
| 845 | CheckVLServer(sa, &treq); |
| 846 | continue; |
| 847 | } |
| 848 | |
| 849 | if (!ts->cell) /* not really an active server, anyway, it must */ |
| 850 | continue; /* have just been added by setsprefs */ |
| 851 | |
| 852 | /* get a connection, even if host is down; bumps conn ref count */ |
| 853 | tu = afs_GetUser(treq.uid, ts->cell->cellNum, SHARED_LOCK4); |
| 854 | tc = afs_ConnBySA(sa, ts->cell->fsport, ts->cell->cellNum, tu, |
| 855 | 1 /*force */ , 1 /*create */ , SHARED_LOCK4, &rxconn); |
| 856 | afs_PutUser(tu, SHARED_LOCK4); |
| 857 | if (!tc) |
| 858 | continue; |
| 859 | |
| 860 | if ((sa->sa_flags & SRVADDR_ISDOWN0x20) || afs_HaveCallBacksFrom(sa->server) |
| 861 | || (tc->parent->srvr->server == afs_setTimeHost)) { |
| 862 | conns[nconns]=tc; |
| 863 | rxconns[nconns]=rxconn; |
| 864 | if (sa->sa_flags & SRVADDR_ISDOWN0x20) { |
| 865 | rx_SetConnDeadTime(rxconn, 3); |
| 866 | conntimer[nconns]=1; |
| 867 | } else { |
| 868 | conntimer[nconns]=0; |
| 869 | } |
| 870 | nconns++; |
| 871 | } |
| 872 | } /* Outer loop over addrs */ |
| 873 | |
| 874 | (*func1)(rxconns, nconns, j, conns, addrs); |
| 875 | |
| 876 | if (func2) { |
| 877 | (*func2)(rxconns, nconns, j, conns, addrs); |
| 878 | } |
| 879 | |
| 880 | for (i = 0; i < nconns; i++) { |
| 881 | if (conntimer[i] == 1) |
| 882 | rx_SetConnDeadTime(rxconns[i], afs_rx_deadtime); |
| 883 | afs_PutConn(conns[i], rxconns[i], SHARED_LOCK4); /* done with it now */ |
| 884 | } |
| 885 | |
| 886 | afs_osi_Free(addrs, srvAddrCount * sizeof(*addrs)); |
| 887 | afs_osi_Free(conns, j * sizeof(struct afs_conn *)); |
| 888 | afs_osi_Free(rxconns, j * sizeof(struct rx_connection *)); |
| 889 | afs_osi_Free(conntimer, j * sizeof(afs_int32)); |
| 890 | afs_osi_Free(results, j * sizeof(afs_int32)); |
| 891 | |
| 892 | } /*afs_CheckServers*/ |
| 893 | |
| 894 | |
| 895 | /* find a server structure given the host address */ |
| 896 | struct server * |
| 897 | afs_FindServer(afs_int32 aserver, afs_uint16 aport, afsUUID * uuidp, |
| 898 | afs_int32 locktype) |
| 899 | { |
| 900 | struct server *ts; |
| 901 | struct srvAddr *sa; |
| 902 | int i; |
| 903 | |
| 904 | AFS_STATCNT(afs_FindServer)((afs_cmstats.callInfo.C_afs_FindServer)++); |
| 905 | if (uuidp) { |
| 906 | i = afs_uuid_hash(uuidp) % NSERVERS16; |
| 907 | for (ts = afs_servers[i]; ts; ts = ts->next) { |
| 908 | if ((ts->flags & SRVR_MULTIHOMED0x40) |
| 909 | && |
| 910 | (memcmp((char *)uuidp, (char *)&ts->sr_uuid_suid._srvUuid.suuid, sizeof(*uuidp)) |
| 911 | == 0) && (!ts->addr || (ts->addr->sa_portal == aport))) |
| 912 | return ts; |
| 913 | } |
| 914 | } else { |
| 915 | i = SHash(aserver)(((__builtin_constant_p(aserver) ? ((((__uint32_t)(aserver)) >> 24) | ((((__uint32_t)(aserver)) & (0xff << 16)) >> 8) | ((((__uint32_t)(aserver)) & (0xff << 8)) << 8) | (((__uint32_t)(aserver)) << 24)) : __bswap32_var( aserver))) & (16 -1)); |
| 916 | for (sa = afs_srvAddrs[i]; sa; sa = sa->next_bkt) { |
| 917 | if ((sa->sa_ip == aserver) && (sa->sa_portal == aport)) { |
| 918 | return sa->server; |
| 919 | } |
| 920 | } |
| 921 | } |
| 922 | return NULL((void *)0); |
| 923 | |
| 924 | } /*afs_FindServer */ |
| 925 | |
| 926 | |
| 927 | /* some code for creating new server structs and setting preferences follows |
| 928 | * in the next few lines... |
| 929 | */ |
| 930 | |
| 931 | #define MAXDEFRANK60000 60000 |
| 932 | #define DEFRANK40000 40000 |
| 933 | |
| 934 | /* Random number generator and constants from KnuthV2 2d ed, p170 */ |
| 935 | |
| 936 | /* Rules: |
| 937 | X = (aX + c) % m |
| 938 | m is a power of two |
| 939 | a % 8 is 5 |
| 940 | a is 0.73m should be 0.01m .. 0.99m |
| 941 | c is more or less immaterial. 1 or a is suggested. |
| 942 | |
| 943 | NB: LOW ORDER BITS are not very random. To get small random numbers, |
| 944 | treat result as <1, with implied binary point, and multiply by |
| 945 | desired modulus. |
| 946 | NB: Has to be unsigned, since shifts on signed quantities may preserve |
| 947 | the sign bit. |
| 948 | */ |
| 949 | /* added rxi_getaddr() to try to get as much initial randomness as |
| 950 | possible, since at least one customer reboots ALL their clients |
| 951 | simultaneously -- so osi_Time is bound to be the same on some of the |
| 952 | clients. This is probably OK, but I don't want to see too much of it. |
| 953 | */ |
| 954 | |
| 955 | #define ranstage(x)(x)= (afs_uint32) (3141592621U*((afs_uint32)x)+1) (x)= (afs_uint32) (3141592621U*((afs_uint32)x)+1) |
| 956 | |
| 957 | unsigned int |
| 958 | afs_random(void) |
| 959 | { |
| 960 | static afs_int32 state = 0; |
| 961 | int i; |
| 962 | |
| 963 | AFS_STATCNT(afs_random)((afs_cmstats.callInfo.C_afs_random)++); |
| 964 | if (!state) { |
| 965 | osi_timeval_t t; |
| 966 | osi_GetTime(&t); |
| 967 | /* |
| 968 | * 0xfffffff0 was changed to (~0 << 4) since it works no matter how many |
| 969 | * bits are in a tv_usec |
| 970 | */ |
| 971 | state = (t.tv_usec & (~0 << 4)) + (rxi_getaddr() & 0xff); |
| 972 | state += (t.tv_sec & 0xff); |
| 973 | for (i = 0; i < 30; i++) { |
| 974 | ranstage(state)(state)= (afs_uint32) (3141592621U*((afs_uint32)state)+1); |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | ranstage(state)(state)= (afs_uint32) (3141592621U*((afs_uint32)state)+1); |
| 979 | return (state); |
| 980 | |
| 981 | } /*afs_random */ |
| 982 | |
| 983 | /* returns int 0..14 using the high bits of a pseudo-random number instead of |
| 984 | the low bits, as the low bits are "less random" than the high ones... |
| 985 | slight roundoff error exists, an excercise for the reader. |
| 986 | need to multiply by something with lots of ones in it, so multiply by |
| 987 | 8 or 16 is right out. |
| 988 | */ |
| 989 | int |
| 990 | afs_randomMod15(void) |
| 991 | { |
| 992 | afs_uint32 temp; |
| 993 | |
| 994 | temp = afs_random() >> 4; |
| 995 | temp = (temp * 15) >> 28; |
| 996 | |
| 997 | return temp; |
| 998 | } |
| 999 | |
| 1000 | int |
| 1001 | afs_randomMod127(void) |
| 1002 | { |
| 1003 | afs_uint32 temp; |
| 1004 | |
| 1005 | temp = afs_random() >> 7; |
| 1006 | temp = (temp * 127) >> 25; |
| 1007 | |
| 1008 | return temp; |
| 1009 | } |
| 1010 | |
| 1011 | /* afs_SortOneServer() |
| 1012 | * Sort all of the srvAddrs, of a server struct, by rank from low to high. |
| 1013 | */ |
| 1014 | void |
| 1015 | afs_SortOneServer(struct server *asp) |
| 1016 | { |
| 1017 | struct srvAddr **rootsa, *lowsa, *tsa, *lowprev; |
| 1018 | int lowrank, rank; |
| 1019 | |
| 1020 | for (rootsa = &(asp->addr); *rootsa; rootsa = &(lowsa->next_sa)) { |
| 1021 | lowprev = NULL((void *)0); |
| 1022 | lowsa = *rootsa; /* lowest sa is the first one */ |
| 1023 | lowrank = lowsa->sa_iprank; |
| 1024 | |
| 1025 | for (tsa = *rootsa; tsa->next_sa; tsa = tsa->next_sa) { |
| 1026 | rank = tsa->next_sa->sa_iprank; |
| 1027 | if (rank < lowrank) { |
| 1028 | lowprev = tsa; |
| 1029 | lowsa = tsa->next_sa; |
| 1030 | lowrank = lowsa->sa_iprank; |
| 1031 | } |
| 1032 | } |
| 1033 | if (lowprev) { /* found one lower, so rearrange them */ |
| 1034 | lowprev->next_sa = lowsa->next_sa; |
| 1035 | lowsa->next_sa = *rootsa; |
| 1036 | *rootsa = lowsa; |
| 1037 | } |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | /* afs_SortServer() |
| 1042 | * Sort the pointer to servers by the server's rank (its lowest rank). |
| 1043 | * It is assumed that the server already has its IP addrs sorted (the |
| 1044 | * first being its lowest rank: afs_GetServer() calls afs_SortOneServer()). |
| 1045 | */ |
| 1046 | void |
| 1047 | afs_SortServers(struct server *aservers[], int count) |
| 1048 | { |
| 1049 | struct server *ts; |
| 1050 | int i, j, low; |
| 1051 | |
| 1052 | AFS_STATCNT(afs_SortServers)((afs_cmstats.callInfo.C_afs_SortServers)++); |
| 1053 | |
| 1054 | for (i = 0; i < count; i++) { |
| 1055 | if (!aservers[i]) |
| 1056 | break; |
| 1057 | for (low = i, j = i + 1; j <= count; j++) { |
| 1058 | if ((!aservers[j]) || (!aservers[j]->addr)) |
| 1059 | break; |
| 1060 | if ((!aservers[low]) || (!aservers[low]->addr)) |
| 1061 | break; |
| 1062 | if (aservers[j]->addr->sa_iprank < aservers[low]->addr->sa_iprank) { |
| 1063 | low = j; |
| 1064 | } |
| 1065 | } |
| 1066 | if (low != i) { |
| 1067 | ts = aservers[i]; |
| 1068 | aservers[i] = aservers[low]; |
| 1069 | aservers[low] = ts; |
| 1070 | } |
| 1071 | } |
| 1072 | } /*afs_SortServers */ |
| 1073 | |
| 1074 | /* afs_SetServerPrefs is rather system-dependent. It pokes around in kernel |
| 1075 | data structures to determine what the local IP addresses and subnet masks |
| 1076 | are in order to choose which server(s) are on the local subnet. |
| 1077 | |
| 1078 | As I see it, there are several cases: |
| 1079 | 1. The server address is one of this host's local addresses. In this case |
| 1080 | this server is to be preferred over all others. |
| 1081 | 2. The server is on the same subnet as one of the this host's local |
| 1082 | addresses. (ie, an odd-sized subnet, not class A,B,orC) |
| 1083 | 3. The server is on the same net as this host (class A,B or C) |
| 1084 | 4. The server is on a different logical subnet or net than this host, but |
| 1085 | this host is a 'metric 0 gateway' to it. Ie, two address-spaces share |
| 1086 | one physical medium. |
| 1087 | 5. This host has a direct (point-to-point, ie, PPP or SLIP) link to the |
| 1088 | server. |
| 1089 | 6. This host and the server are disjoint. |
| 1090 | |
| 1091 | That is a rough order of preference. If a point-to-point link has a high |
| 1092 | metric, I'm assuming that it is a very slow link, and putting it at the |
| 1093 | bottom of the list (at least until RX works better over slow links). If |
| 1094 | its metric is 1, I'm assuming that it's relatively fast (T1) and putting |
| 1095 | it ahead of #6. |
| 1096 | It's not easy to check for case #4, so I'm ignoring it for the time being. |
| 1097 | |
| 1098 | BSD "if" code keeps track of some rough network statistics (cf 'netstat -i') |
| 1099 | That could be used to prefer certain servers fairly easily. Maybe some |
| 1100 | other time... |
| 1101 | |
| 1102 | NOTE: this code is very system-dependent, and very dependent on the TCP/IP |
| 1103 | protocols (well, addresses that are stored in uint32s, at any rate). |
| 1104 | */ |
| 1105 | |
| 1106 | #define IA_DST(ia)((struct sockaddr_in *)(&((struct usr_in_ifaddr *)ia)-> ia_dstaddr))((struct sockaddr_in *)(&((struct in_ifaddrusr_in_ifaddr *)ia)->ia_dstaddr)) |
| 1107 | #define IA_BROAD(ia)((struct sockaddr_in *)(&((struct usr_in_ifaddr *)ia)-> ia_broadaddr))((struct sockaddr_in *)(&((struct in_ifaddrusr_in_ifaddr *)ia)->ia_broadaddr)) |
| 1108 | |
| 1109 | /* SA2ULONG takes a sockaddr_in, not a sockaddr (same thing, just cast it!) */ |
| 1110 | #define SA2ULONG(sa)((sa)->sin_addr.s_addr) ((sa)->sin_addr.s_addr) |
| 1111 | #define TOPR 5000 |
| 1112 | #define HI 20000 |
| 1113 | #define MED 30000 |
| 1114 | #define LO DEFRANK40000 |
| 1115 | #define PPWEIGHT 4096 |
| 1116 | |
| 1117 | #define USEIFADDR |
| 1118 | |
| 1119 | #ifdef AFS_USERSPACE_IP_ADDR1 |
| 1120 | #ifndef afs_min |
| 1121 | #define afs_min(A,B)((A)<(B)) ? (A) : (B) ((A)<(B)) ? (A) : (B) |
| 1122 | #endif |
| 1123 | /* |
| 1124 | * The IP addresses and ranks are determined by afsd (in user space) and |
| 1125 | * passed into the kernel at startup time through the AFSOP_ADVISEADDR |
| 1126 | * system call. These are stored in the data structure |
| 1127 | * called 'afs_cb_interface'. |
| 1128 | * |
| 1129 | * struct srvAddr *sa; remote server |
| 1130 | * afs_int32 addr; one of my local addr in net order |
| 1131 | * afs_uint32 subnetmask; subnet mask of local addr in net order |
| 1132 | * |
| 1133 | */ |
| 1134 | void |
| 1135 | afsi_SetServerIPRank(struct srvAddr *sa, afs_int32 addr, |
| 1136 | afs_uint32 subnetmask) |
| 1137 | { |
| 1138 | afs_uint32 myAddr, myNet, mySubnet, netMask; |
| 1139 | afs_uint32 serverAddr; |
| 1140 | |
| 1141 | myAddr = ntohl(addr)(__builtin_constant_p(addr) ? ((((__uint32_t)(addr)) >> 24) | ((((__uint32_t)(addr)) & (0xff << 16)) >> 8) | ((((__uint32_t)(addr)) & (0xff << 8)) << 8) | (((__uint32_t)(addr)) << 24)) : __bswap32_var(addr )); /* one of my IP addr in host order */ |
| 1142 | serverAddr = ntohl(sa->sa_ip)(__builtin_constant_p(sa->sa_ip) ? ((((__uint32_t)(sa-> sa_ip)) >> 24) | ((((__uint32_t)(sa->sa_ip)) & ( 0xff << 16)) >> 8) | ((((__uint32_t)(sa->sa_ip )) & (0xff << 8)) << 8) | (((__uint32_t)(sa-> sa_ip)) << 24)) : __bswap32_var(sa->sa_ip)); /* server's IP addr in host order */ |
| 1143 | subnetmask = ntohl(subnetmask)(__builtin_constant_p(subnetmask) ? ((((__uint32_t)(subnetmask )) >> 24) | ((((__uint32_t)(subnetmask)) & (0xff << 16)) >> 8) | ((((__uint32_t)(subnetmask)) & (0xff << 8)) << 8) | (((__uint32_t)(subnetmask)) << 24)) : __bswap32_var(subnetmask)); /* subnet mask in host order */ |
| 1144 | |
| 1145 | if (IN_CLASSA(myAddr)(((u_int32_t)(myAddr) & 0x80000000) == 0)) |
| 1146 | netMask = IN_CLASSA_NET0xff000000; |
| 1147 | else if (IN_CLASSB(myAddr)(((u_int32_t)(myAddr) & 0xc0000000) == 0x80000000)) |
| 1148 | netMask = IN_CLASSB_NET0xffff0000; |
| 1149 | else if (IN_CLASSC(myAddr)(((u_int32_t)(myAddr) & 0xe0000000) == 0xc0000000)) |
| 1150 | netMask = IN_CLASSC_NET0xffffff00; |
| 1151 | else |
| 1152 | netMask = 0; |
| 1153 | |
| 1154 | myNet = myAddr & netMask; |
| 1155 | mySubnet = myAddr & subnetmask; |
| 1156 | |
| 1157 | if ((serverAddr & netMask) == myNet) { |
| 1158 | if ((serverAddr & subnetmask) == mySubnet) { |
| 1159 | if (serverAddr == myAddr) { /* same machine */ |
| 1160 | sa->sa_iprank = afs_min(sa->sa_iprank, TOPR)((sa->sa_iprank)<(TOPR)) ? (sa->sa_iprank) : (TOPR); |
| 1161 | } else { /* same subnet */ |
| 1162 | sa->sa_iprank = afs_min(sa->sa_iprank, HI)((sa->sa_iprank)<(HI)) ? (sa->sa_iprank) : (HI); |
| 1163 | } |
| 1164 | } else { /* same net */ |
| 1165 | sa->sa_iprank = afs_min(sa->sa_iprank, MED)((sa->sa_iprank)<(MED)) ? (sa->sa_iprank) : (MED); |
| 1166 | } |
| 1167 | } |
| 1168 | return; |
| 1169 | } |
| 1170 | #else /* AFS_USERSPACE_IP_ADDR */ |
| 1171 | #if (! defined(AFS_SUN5_ENV)) && (! defined(AFS_DARWIN_ENV)) && (! defined(AFS_OBSD47_ENV)) && defined(USEIFADDR) |
| 1172 | void |
| 1173 | afsi_SetServerIPRank(struct srvAddr *sa, struct in_ifaddrusr_in_ifaddr *ifa) |
| 1174 | { |
| 1175 | struct sockaddr_in *sin; |
| 1176 | int t; |
| 1177 | |
| 1178 | if ((ntohl(sa->sa_ip)(__builtin_constant_p(sa->sa_ip) ? ((((__uint32_t)(sa-> sa_ip)) >> 24) | ((((__uint32_t)(sa->sa_ip)) & ( 0xff << 16)) >> 8) | ((((__uint32_t)(sa->sa_ip )) & (0xff << 8)) << 8) | (((__uint32_t)(sa-> sa_ip)) << 24)) : __bswap32_var(sa->sa_ip)) & ifa->ia_netmask) == ifa->ia_net) { |
| 1179 | if ((ntohl(sa->sa_ip)(__builtin_constant_p(sa->sa_ip) ? ((((__uint32_t)(sa-> sa_ip)) >> 24) | ((((__uint32_t)(sa->sa_ip)) & ( 0xff << 16)) >> 8) | ((((__uint32_t)(sa->sa_ip )) & (0xff << 8)) << 8) | (((__uint32_t)(sa-> sa_ip)) << 24)) : __bswap32_var(sa->sa_ip)) & ifa->ia_subnetmask) == ifa->ia_subnet) { |
| 1180 | sin = IA_SIN(ifa)(&(ifa)->ia_addr); |
| 1181 | if (SA2ULONG(sin)((sin)->sin_addr.s_addr) == ntohl(sa->sa_ip)(__builtin_constant_p(sa->sa_ip) ? ((((__uint32_t)(sa-> sa_ip)) >> 24) | ((((__uint32_t)(sa->sa_ip)) & ( 0xff << 16)) >> 8) | ((((__uint32_t)(sa->sa_ip )) & (0xff << 8)) << 8) | (((__uint32_t)(sa-> sa_ip)) << 24)) : __bswap32_var(sa->sa_ip))) { /* ie, ME!!! */ |
| 1182 | sa->sa_iprank = TOPR; |
| 1183 | } else { |
| 1184 | t = HI + ifa->ia_ifp->if_metric; /* case #2 */ |
| 1185 | if (sa->sa_iprank > t) |
| 1186 | sa->sa_iprank = t; |
| 1187 | } |
| 1188 | } else { |
| 1189 | t = MED + ifa->ia_ifp->if_metric; /* case #3 */ |
| 1190 | if (sa->sa_iprank > t) |
| 1191 | sa->sa_iprank = t; |
| 1192 | } |
| 1193 | } |
| 1194 | #ifdef IFF_POINTTOPOINT |
| 1195 | /* check for case #4 -- point-to-point link */ |
| 1196 | if ((ifa->ia_ifp->if_flags & IFF_POINTOPOINT0x10) |
| 1197 | && (SA2ULONG(IA_DST(ifa))((((struct sockaddr_in *)(&((struct usr_in_ifaddr *)ifa)-> ia_dstaddr)))->sin_addr.s_addr) == ntohl(sa->sa_ip)(__builtin_constant_p(sa->sa_ip) ? ((((__uint32_t)(sa-> sa_ip)) >> 24) | ((((__uint32_t)(sa->sa_ip)) & ( 0xff << 16)) >> 8) | ((((__uint32_t)(sa->sa_ip )) & (0xff << 8)) << 8) | (((__uint32_t)(sa-> sa_ip)) << 24)) : __bswap32_var(sa->sa_ip)))) { |
| 1198 | if (ifa->ia_ifp->if_metric >= (MAXDEFRANK60000 - MED) / PPWEIGHT) |
| 1199 | t = MAXDEFRANK60000; |
| 1200 | else |
| 1201 | t = MED + (PPWEIGHT << ifa->ia_ifp->if_metric); |
| 1202 | if (sa->sa_iprank > t) |
| 1203 | sa->sa_iprank = t; |
| 1204 | } |
| 1205 | #endif /* IFF_POINTTOPOINT */ |
| 1206 | } |
| 1207 | #endif /*(!defined(AFS_SUN5_ENV)) && defined(USEIFADDR) */ |
| 1208 | #if (defined(AFS_DARWIN_ENV) || defined(AFS_OBSD47_ENV)) && defined(USEIFADDR) |
| 1209 | #ifndef afs_min |
| 1210 | #define afs_min(A,B)((A)<(B)) ? (A) : (B) ((A)<(B)) ? (A) : (B) |
| 1211 | #endif |
| 1212 | void |
| 1213 | afsi_SetServerIPRank(struct srvAddr *sa, rx_ifaddr_tstruct usr_ifaddr * ifa) |
| 1214 | { |
| 1215 | struct sockaddr sout; |
| 1216 | struct sockaddr_in *sin; |
| 1217 | int t; |
| 1218 | |
| 1219 | afs_uint32 subnetmask, myAddr, myNet, myDstaddr, mySubnet, netMask; |
| 1220 | afs_uint32 serverAddr; |
| 1221 | |
| 1222 | if (rx_ifaddr_address_family(ifa)(ifa)->ifa_addr->sa_family != AF_INET2) |
| 1223 | return; |
| 1224 | t = rx_ifaddr_address(ifa, &sout, sizeof(sout))memcpy(&sout, (ifa)->ifa_addr, sizeof(sout)); |
| 1225 | if (t != 0) { |
| 1226 | sin = (struct sockaddr_in *)&sout; |
| 1227 | myAddr = ntohl(sin->sin_addr.s_addr)(__builtin_constant_p(sin->sin_addr.s_addr) ? ((((__uint32_t )(sin->sin_addr.s_addr)) >> 24) | ((((__uint32_t)(sin ->sin_addr.s_addr)) & (0xff << 16)) >> 8) | ((((__uint32_t)(sin->sin_addr.s_addr)) & (0xff << 8)) << 8) | (((__uint32_t)(sin->sin_addr.s_addr)) << 24)) : __bswap32_var(sin->sin_addr.s_addr)); /* one of my IP addr in host order */ |
| 1228 | } else { |
| 1229 | myAddr = 0; |
| 1230 | } |
| 1231 | serverAddr = ntohl(sa->sa_ip)(__builtin_constant_p(sa->sa_ip) ? ((((__uint32_t)(sa-> sa_ip)) >> 24) | ((((__uint32_t)(sa->sa_ip)) & ( 0xff << 16)) >> 8) | ((((__uint32_t)(sa->sa_ip )) & (0xff << 8)) << 8) | (((__uint32_t)(sa-> sa_ip)) << 24)) : __bswap32_var(sa->sa_ip)); /* server's IP addr in host order */ |
| 1232 | t = rx_ifaddr_netmask(ifa, &sout, sizeof(sout))memcpy(&sout, (ifa)->ifa_netmask, sizeof(sout)); |
| 1233 | if (t != 0) { |
| 1234 | sin = (struct sockaddr_in *)&sout; |
| 1235 | subnetmask = ntohl(sin->sin_addr.s_addr)(__builtin_constant_p(sin->sin_addr.s_addr) ? ((((__uint32_t )(sin->sin_addr.s_addr)) >> 24) | ((((__uint32_t)(sin ->sin_addr.s_addr)) & (0xff << 16)) >> 8) | ((((__uint32_t)(sin->sin_addr.s_addr)) & (0xff << 8)) << 8) | (((__uint32_t)(sin->sin_addr.s_addr)) << 24)) : __bswap32_var(sin->sin_addr.s_addr)); /* subnet mask in host order */ |
| 1236 | } else { |
| 1237 | subnetmask = 0; |
| 1238 | } |
| 1239 | t = rx_ifaddr_dstaddress(ifa, &sout, sizeof(sout))memcpy(&sout, (ifa)->ifa_dstaddr, sizeof(sout)); |
| 1240 | if (t != 0) { |
| 1241 | sin = (struct sockaddr_in *)&sout; |
| 1242 | myDstaddr = ntohl(sin->sin_addr.s_addr)(__builtin_constant_p(sin->sin_addr.s_addr) ? ((((__uint32_t )(sin->sin_addr.s_addr)) >> 24) | ((((__uint32_t)(sin ->sin_addr.s_addr)) & (0xff << 16)) >> 8) | ((((__uint32_t)(sin->sin_addr.s_addr)) & (0xff << 8)) << 8) | (((__uint32_t)(sin->sin_addr.s_addr)) << 24)) : __bswap32_var(sin->sin_addr.s_addr)); |
| 1243 | } else { |
| 1244 | myDstaddr = 0; |
| 1245 | } |
| 1246 | |
| 1247 | if (IN_CLASSA(myAddr)(((u_int32_t)(myAddr) & 0x80000000) == 0)) |
| 1248 | netMask = IN_CLASSA_NET0xff000000; |
| 1249 | else if (IN_CLASSB(myAddr)(((u_int32_t)(myAddr) & 0xc0000000) == 0x80000000)) |
| 1250 | netMask = IN_CLASSB_NET0xffff0000; |
| 1251 | else if (IN_CLASSC(myAddr)(((u_int32_t)(myAddr) & 0xe0000000) == 0xc0000000)) |
| 1252 | netMask = IN_CLASSC_NET0xffffff00; |
| 1253 | else |
| 1254 | netMask = 0; |
| 1255 | |
| 1256 | myNet = myAddr & netMask; |
| 1257 | mySubnet = myAddr & subnetmask; |
| 1258 | |
| 1259 | if ((serverAddr & netMask) == myNet) { |
| 1260 | if ((serverAddr & subnetmask) == mySubnet) { |
| 1261 | if (serverAddr == myAddr) { /* same machine */ |
| 1262 | sa->sa_iprank = afs_min(sa->sa_iprank, TOPR)((sa->sa_iprank)<(TOPR)) ? (sa->sa_iprank) : (TOPR); |
| 1263 | } else { /* same subnet */ |
| 1264 | sa->sa_iprank = afs_min(sa->sa_iprank, HI + rx_ifnet_metric(rx_ifaddr_ifnet(ifa)))((sa->sa_iprank)<(HI + ((ifa?(ifa)->ifa_ifp:0)?((ifa ?(ifa)->ifa_ifp:0))->if_data.ifi_metric:0))) ? (sa-> sa_iprank) : (HI + ((ifa?(ifa)->ifa_ifp:0)?((ifa?(ifa)-> ifa_ifp:0))->if_data.ifi_metric:0)); |
| 1265 | } |
| 1266 | } else { /* same net */ |
| 1267 | sa->sa_iprank = afs_min(sa->sa_iprank, MED + rx_ifnet_metric(rx_ifaddr_ifnet(ifa)))((sa->sa_iprank)<(MED + ((ifa?(ifa)->ifa_ifp:0)?((ifa ?(ifa)->ifa_ifp:0))->if_data.ifi_metric:0))) ? (sa-> sa_iprank) : (MED + ((ifa?(ifa)->ifa_ifp:0)?((ifa?(ifa)-> ifa_ifp:0))->if_data.ifi_metric:0)); |
| 1268 | } |
| 1269 | } |
| 1270 | #ifdef IFF_POINTTOPOINT |
| 1271 | /* check for case #4 -- point-to-point link */ |
| 1272 | if ((rx_ifnet_flags(rx_ifaddr_ifnet(ifa))((ifa?(ifa)->ifa_ifp:0)?((ifa?(ifa)->ifa_ifp:0))->if_flags :0) & IFF_POINTOPOINT0x10) |
| 1273 | && (myDstaddr == serverAddr)) { |
| 1274 | if (rx_ifnet_metric(rx_ifaddr_ifnet(ifa))((ifa?(ifa)->ifa_ifp:0)?((ifa?(ifa)->ifa_ifp:0))->if_data .ifi_metric:0) >= (MAXDEFRANK60000 - MED) / PPWEIGHT) |
| 1275 | t = MAXDEFRANK60000; |
| 1276 | else |
| 1277 | t = MED + (PPWEIGHT << rx_ifnet_metric(rx_ifaddr_ifnet(ifa))((ifa?(ifa)->ifa_ifp:0)?((ifa?(ifa)->ifa_ifp:0))->if_data .ifi_metric:0)); |
| 1278 | if (sa->sa_iprank > t) |
| 1279 | sa->sa_iprank = t; |
| 1280 | } |
| 1281 | #endif /* IFF_POINTTOPOINT */ |
| 1282 | } |
| 1283 | #endif /*(!defined(AFS_SUN5_ENV)) && defined(USEIFADDR) */ |
| 1284 | #endif /* else AFS_USERSPACE_IP_ADDR */ |
| 1285 | |
| 1286 | #ifdef AFS_SGI62_ENV |
| 1287 | static int |
| 1288 | afsi_enum_set_rank(struct hashbucket *h, caddr_t mkey, caddr_t arg1, |
| 1289 | caddr_t arg2) |
| 1290 | { |
| 1291 | afsi_SetServerIPRank((struct srvAddr *)arg1, (struct in_ifaddrusr_in_ifaddr *)h); |
| 1292 | return 0; /* Never match, so we enumerate everyone */ |
| 1293 | } |
| 1294 | #endif /* AFS_SGI62_ENV */ |
| 1295 | static int |
| 1296 | afs_SetServerPrefs(struct srvAddr *sa) |
| 1297 | { |
| 1298 | #if defined(AFS_USERSPACE_IP_ADDR1) |
| 1299 | int i; |
| 1300 | |
| 1301 | sa->sa_iprank = LO; |
| 1302 | for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) { |
| 1303 | afsi_SetServerIPRank(sa, afs_cb_interface.addr_in[i], |
| 1304 | afs_cb_interface.subnetmask[i]); |
| 1305 | } |
| 1306 | #else /* AFS_USERSPACE_IP_ADDR */ |
| 1307 | #if defined(AFS_SUN5_ENV) |
| 1308 | #ifdef AFS_SUN510_ENV |
| 1309 | int i = 0; |
| 1310 | #else |
| 1311 | extern struct ill_s *ill_g_headp; |
| 1312 | long *addr = (long *)ill_g_headp; |
| 1313 | ill_t *ill; |
| 1314 | ipif_t *ipif; |
| 1315 | #endif |
| 1316 | int subnet, subnetmask, net, netmask; |
| 1317 | |
| 1318 | if (sa) |
| 1319 | sa->sa_iprank = 0; |
| 1320 | #ifdef AFS_SUN510_ENV |
| 1321 | rw_enter(&afsifinfo_lock, RW_READER); |
| 1322 | |
| 1323 | for (i = 0; (afsifinfo[i].ipaddr != NULL((void *)0)) && (i < ADDRSPERSITE16); i++) { |
| 1324 | |
| 1325 | if (IN_CLASSA(afsifinfo[i].ipaddr)(((u_int32_t)(afsifinfo[i].ipaddr) & 0x80000000) == 0)) { |
| 1326 | netmask = IN_CLASSA_NET0xff000000; |
| 1327 | } else if (IN_CLASSB(afsifinfo[i].ipaddr)(((u_int32_t)(afsifinfo[i].ipaddr) & 0xc0000000) == 0x80000000 )) { |
| 1328 | netmask = IN_CLASSB_NET0xffff0000; |
| 1329 | } else if (IN_CLASSC(afsifinfo[i].ipaddr)(((u_int32_t)(afsifinfo[i].ipaddr) & 0xe0000000) == 0xc0000000 )) { |
| 1330 | netmask = IN_CLASSC_NET0xffffff00; |
| 1331 | } else { |
| 1332 | netmask = 0; |
| 1333 | } |
| 1334 | net = afsifinfo[i].ipaddr & netmask; |
| 1335 | |
| 1336 | #ifdef notdef |
| 1337 | if (!s) { |
| 1338 | if (!rx_IsLoopbackAddr(afsifinfo[i].ipaddr)) { /* ignore loopback */ |
| 1339 | *cnt += 1; |
| 1340 | if (*cnt > 16) |
| 1341 | return; |
| 1342 | *addrp++ = afsifinfo[i].ipaddr; |
| 1343 | } |
| 1344 | } else |
| 1345 | #endif /* notdef */ |
| 1346 | { |
| 1347 | /* XXXXXX Do the individual ip ranking below XXXXX */ |
| 1348 | if ((sa->sa_ip & netmask) == net) { |
| 1349 | if ((sa->sa_ip & subnetmask) == subnet) { |
| 1350 | if (afsifinfo[i].ipaddr == sa->sa_ip) { /* ie, ME! */ |
| 1351 | sa->sa_iprank = TOPR; |
| 1352 | } else { |
| 1353 | sa->sa_iprank = HI + afsifinfo[i].metric; /* case #2 */ |
| 1354 | } |
| 1355 | } else { |
| 1356 | sa->sa_iprank = MED + afsifinfo[i].metric; /* case #3 */ |
| 1357 | } |
| 1358 | } else { |
| 1359 | sa->sa_iprank = LO + afsifinfo[i].metric; /* case #4 */ |
| 1360 | } |
| 1361 | /* check for case #5 -- point-to-point link */ |
| 1362 | if ((afsifinfo[i].flags & IFF_POINTOPOINT0x10) |
| 1363 | && (afsifinfo[i].dstaddr == sa->sa_ip)) { |
| 1364 | |
| 1365 | if (afsifinfo[i].metric >= (MAXDEFRANK60000 - MED) / PPWEIGHT) |
| 1366 | sa->sa_iprank = MAXDEFRANK60000; |
| 1367 | else |
| 1368 | sa->sa_iprank = MED + (PPWEIGHT << afsifinfo[i].metric); |
| 1369 | } |
| 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | rw_exit(&afsifinfo_lock); |
| 1374 | #else |
| 1375 | for (ill = (struct ill_s *)*addr /*ill_g_headp */ ; ill; |
| 1376 | ill = ill->ill_next) { |
| 1377 | /* Make sure this is an IPv4 ILL */ |
| 1378 | if (ill->ill_isv6) |
| 1379 | continue; |
| 1380 | for (ipif = ill->ill_ipif; ipif; ipif = ipif->ipif_next) { |
| 1381 | subnet = ipif->ipif_local_addr & ipif->ipif_net_mask; |
| 1382 | subnetmask = ipif->ipif_net_mask; |
| 1383 | /* |
| 1384 | * Generate the local net using the local address and |
| 1385 | * whate we know about Class A, B and C networks. |
| 1386 | */ |
| 1387 | if (IN_CLASSA(ipif->ipif_local_addr)(((u_int32_t)(ipif->ipif_local_addr) & 0x80000000) == 0 )) { |
| 1388 | netmask = IN_CLASSA_NET0xff000000; |
| 1389 | } else if (IN_CLASSB(ipif->ipif_local_addr)(((u_int32_t)(ipif->ipif_local_addr) & 0xc0000000) == 0x80000000 )) { |
| 1390 | netmask = IN_CLASSB_NET0xffff0000; |
| 1391 | } else if (IN_CLASSC(ipif->ipif_local_addr)(((u_int32_t)(ipif->ipif_local_addr) & 0xe0000000) == 0xc0000000 )) { |
| 1392 | netmask = IN_CLASSC_NET0xffffff00; |
| 1393 | } else { |
| 1394 | netmask = 0; |
| 1395 | } |
| 1396 | net = ipif->ipif_local_addr & netmask; |
| 1397 | #ifdef notdef |
| 1398 | if (!s) { |
| 1399 | if (!rx_IsLoopbackAddr(ipif->ipif_local_addr)) { /* ignore loopback */ |
| 1400 | *cnt += 1; |
| 1401 | if (*cnt > 16) |
| 1402 | return; |
| 1403 | *addrp++ = ipif->ipif_local_addr; |
| 1404 | } |
| 1405 | } else |
| 1406 | #endif /* notdef */ |
| 1407 | { |
| 1408 | /* XXXXXX Do the individual ip ranking below XXXXX */ |
| 1409 | if ((sa->sa_ip & netmask) == net) { |
| 1410 | if ((sa->sa_ip & subnetmask) == subnet) { |
| 1411 | if (ipif->ipif_local_addr == sa->sa_ip) { /* ie, ME! */ |
| 1412 | sa->sa_iprank = TOPR; |
| 1413 | } else { |
| 1414 | sa->sa_iprank = HI + ipif->ipif_metric; /* case #2 */ |
| 1415 | } |
| 1416 | } else { |
| 1417 | sa->sa_iprank = MED + ipif->ipif_metric; /* case #3 */ |
| 1418 | } |
| 1419 | } else { |
| 1420 | sa->sa_iprank = LO + ipif->ipif_metric; /* case #4 */ |
| 1421 | } |
| 1422 | /* check for case #5 -- point-to-point link */ |
| 1423 | if ((ipif->ipif_flags & IFF_POINTOPOINT0x10) |
| 1424 | && (ipif->ipif_pp_dst_addr == sa->sa_ip)) { |
| 1425 | |
| 1426 | if (ipif->ipif_metric >= (MAXDEFRANK60000 - MED) / PPWEIGHT) |
| 1427 | sa->sa_iprank = MAXDEFRANK60000; |
| 1428 | else |
| 1429 | sa->sa_iprank = MED + (PPWEIGHT << ipif->ipif_metric); |
| 1430 | } |
| 1431 | } |
| 1432 | } |
| 1433 | } |
| 1434 | #endif /* AFS_SUN510_ENV */ |
| 1435 | #else |
| 1436 | #ifndef USEIFADDR |
| 1437 | rx_ifnet_tstruct usr_ifnet * ifn = NULL((void *)0); |
| 1438 | struct in_ifaddrusr_in_ifaddr *ifad = (struct in_ifaddrusr_in_ifaddr *)0; |
| 1439 | struct sockaddr_in *sin; |
| 1440 | |
| 1441 | if (!sa) { |
| 1442 | #ifdef notdef /* clean up, remove this */ |
| 1443 | for (ifn = ifnetusr_ifnet; ifn != NULL((void *)0); ifn = ifn->if_next) { |
| 1444 | for (ifad = ifn->if_addrlist; ifad != NULL((void *)0); ifad = ifad->ifa_next) { |
| 1445 | if ((IFADDR2SA(ifad)->sa_family == AF_INET2) |
| 1446 | && !(ifn->if_flags & IFF_LOOPBACK0x8)) { |
| 1447 | *cnt += 1; |
| 1448 | if (*cnt > 16) |
| 1449 | return; |
| 1450 | *addrp++ = |
| 1451 | ((struct sockaddr_in *)IFADDR2SA(ifad))->sin_addr. |
| 1452 | s_addr; |
| 1453 | } |
| 1454 | }} |
| 1455 | #endif /* notdef */ |
| 1456 | return; |
| 1457 | } |
| 1458 | sa->sa_iprank = 0; |
| 1459 | #ifdef ADAPT_MTU |
| 1460 | ifn = rxi_FindIfnet(sa->sa_ip, &ifad); |
| 1461 | #endif |
| 1462 | if (ifn) { /* local, more or less */ |
| 1463 | #ifdef IFF_LOOPBACK0x8 |
| 1464 | if (ifn->if_flags & IFF_LOOPBACK0x8) { |
| 1465 | sa->sa_iprank = TOPR; |
| 1466 | goto end; |
| 1467 | } |
| 1468 | #endif /* IFF_LOOPBACK */ |
| 1469 | sin = (struct sockaddr_in *)IA_SIN(ifad)(&(ifad)->ia_addr); |
| 1470 | if (SA2ULONG(sin)((sin)->sin_addr.s_addr) == sa->sa_ip) { |
| 1471 | sa->sa_iprank = TOPR; |
| 1472 | goto end; |
| 1473 | } |
| 1474 | #ifdef IFF_BROADCAST0x2 |
| 1475 | if (ifn->if_flags & IFF_BROADCAST0x2) { |
| 1476 | if (sa->sa_ip == (sa->sa_ip & SA2ULONG(IA_BROAD(ifad))((((struct sockaddr_in *)(&((struct usr_in_ifaddr *)ifad) ->ia_broadaddr)))->sin_addr.s_addr))) { |
| 1477 | sa->sa_iprank = HI; |
| 1478 | goto end; |
| 1479 | } |
| 1480 | } |
| 1481 | #endif /* IFF_BROADCAST */ |
| 1482 | #ifdef IFF_POINTOPOINT0x10 |
| 1483 | if (ifn->if_flags & IFF_POINTOPOINT0x10) { |
| 1484 | if (sa->sa_ip == SA2ULONG(IA_DST(ifad))((((struct sockaddr_in *)(&((struct usr_in_ifaddr *)ifad) ->ia_dstaddr)))->sin_addr.s_addr)) { |
| 1485 | if (ifn->if_metric > 4) { |
| 1486 | sa->sa_iprank = LO; |
| 1487 | goto end; |
| 1488 | } else |
| 1489 | sa->sa_iprank = ifn->if_metric; |
| 1490 | } |
| 1491 | } |
| 1492 | #endif /* IFF_POINTOPOINT */ |
| 1493 | sa->sa_iprank += MED + ifn->if_metric; /* couldn't find anything better */ |
| 1494 | } |
| 1495 | #else /* USEIFADDR */ |
| 1496 | |
| 1497 | if (sa) |
| 1498 | sa->sa_iprank = LO; |
| 1499 | #ifdef AFS_SGI62_ENV |
| 1500 | (void)hash_enum(&hashinfo_inaddr, afsi_enum_set_rank, HTF_INET, NULL((void *)0), |
| 1501 | (caddr_t) sa, NULL((void *)0)); |
| 1502 | #elif defined(AFS_DARWIN80_ENV) |
| 1503 | { |
| 1504 | errno_t t; |
| 1505 | unsigned int count; |
| 1506 | int cnt=0, m, j; |
| 1507 | rx_ifaddr_tstruct usr_ifaddr * *ifads; |
| 1508 | rx_ifnet_tstruct usr_ifnet * *ifns; |
| 1509 | |
| 1510 | if (!ifnet_list_get(AF_INET2, &ifns, &count)) { |
| 1511 | for (m = 0; m < count; m++) { |
| 1512 | if (!ifnet_get_address_list(ifns[m], &ifads)) { |
| 1513 | for (j = 0; ifads[j] != NULL((void *)0) && cnt < ADDRSPERSITE16; j++) { |
| 1514 | afsi_SetServerIPRank(sa, ifads[j]); |
| 1515 | cnt++; |
| 1516 | } |
| 1517 | ifnet_free_address_list(ifads); |
| 1518 | } |
| 1519 | } |
| 1520 | ifnet_list_free(ifns); |
| 1521 | } |
| 1522 | } |
| 1523 | #elif defined(AFS_DARWIN_ENV) |
| 1524 | { |
| 1525 | rx_ifnet_tstruct usr_ifnet * ifn; |
| 1526 | rx_ifaddr_tstruct usr_ifaddr * ifa; |
| 1527 | TAILQ_FOREACH(ifn, &ifnet, if_link)for ((ifn) = (((&usr_ifnet))->tqh_first); (ifn); (ifn) = (((ifn))->if_link.tqe_next)) { |
| 1528 | TAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link)for ((ifa) = (((&ifn->if_addrhead))->tqh_first); (ifa ); (ifa) = (((ifa))->ifa_link.tqe_next)) { |
| 1529 | afsi_SetServerIPRank(sa, ifa); |
| 1530 | }}} |
| 1531 | #elif defined(AFS_FBSD_ENV) |
| 1532 | { |
| 1533 | struct in_ifaddrusr_in_ifaddr *ifa; |
| 1534 | #if defined(AFS_FBSD80_ENV) |
| 1535 | TAILQ_FOREACH(ifa, &V_in_ifaddrhead, ia_link)for ((ifa) = (((&V_in_ifaddrhead))->tqh_first); (ifa); (ifa) = (((ifa))->ia_link.tqe_next)) { |
| 1536 | #else |
| 1537 | TAILQ_FOREACH(ifa, &in_ifaddrhead, ia_link)for ((ifa) = (((&in_ifaddrhead))->tqh_first); (ifa); ( ifa) = (((ifa))->ia_link.tqe_next)) { |
| 1538 | #endif |
| 1539 | afsi_SetServerIPRank(sa, ifa); |
| 1540 | }} |
| 1541 | #elif defined(AFS_OBSD_ENV) |
| 1542 | { |
| 1543 | extern struct in_ifaddrhead in_ifaddrusr_in_ifaddr; |
| 1544 | struct in_ifaddrusr_in_ifaddr *ifa; |
| 1545 | for (ifa = in_ifaddrusr_in_ifaddr.tqh_first; ifa; ifa = ifa->ia_list.tqe_next) |
| 1546 | afsi_SetServerIPRank(sa, ifa); |
| 1547 | } |
| 1548 | #elif defined(AFS_NBSD40_ENV) |
| 1549 | { |
| 1550 | extern struct in_ifaddrhead in_ifaddrhead; |
| 1551 | struct in_ifaddrusr_in_ifaddr *ifa; |
| 1552 | for (ifa = in_ifaddrhead.tqh_first; ifa; ifa = ifa->ia_list.tqe_next) |
| 1553 | afsi_SetServerIPRank(sa, ifa); |
| 1554 | } |
| 1555 | #else |
| 1556 | { |
| 1557 | struct in_ifaddrusr_in_ifaddr *ifa; |
| 1558 | for (ifa = in_ifaddrusr_in_ifaddr; ifa; ifa = ifa->ia_next) { |
| 1559 | afsi_SetServerIPRank(sa, ifa); |
| 1560 | }} |
| 1561 | #endif |
| 1562 | #endif /* USEIFADDR */ |
| 1563 | #ifndef USEIFADDR |
| 1564 | end: |
| 1565 | #endif |
| 1566 | #endif /* AFS_SUN5_ENV */ |
| 1567 | #endif /* else AFS_USERSPACE_IP_ADDR */ |
| 1568 | if (sa) |
| 1569 | sa->sa_iprank += afs_randomMod15(); |
| 1570 | |
| 1571 | return 0; |
| 1572 | } /* afs_SetServerPrefs */ |
| 1573 | |
| 1574 | #undef TOPR |
| 1575 | #undef HI |
| 1576 | #undef MED |
| 1577 | #undef LO |
| 1578 | #undef PPWEIGHT |
| 1579 | |
| 1580 | /* afs_FlushServer() |
| 1581 | * The addresses on this server struct has changed in some way and will |
| 1582 | * clean up all other structures that may reference it. |
| 1583 | * The afs_xserver and afs_xsrvAddr locks are assumed taken. |
| 1584 | */ |
| 1585 | void |
| 1586 | afs_FlushServer(struct server *srvp) |
| 1587 | { |
| 1588 | afs_int32 i; |
| 1589 | struct server *ts, **pts; |
| 1590 | |
| 1591 | /* Find any volumes residing on this server and flush their state */ |
| 1592 | afs_ResetVolumes(srvp); |
| 1593 | |
| 1594 | /* Flush all callbacks in the all vcaches for this specific server */ |
| 1595 | afs_FlushServerCBs(srvp); |
| 1596 | |
| 1597 | /* Remove all the callbacks structs */ |
| 1598 | if (srvp->cbrs) { |
| 1599 | struct afs_cbr *cb, *cbnext; |
| 1600 | |
| 1601 | ObtainWriteLock(&afs_xvcb, 300)do { ; if (!(&afs_xvcb)->excl_locked && !(& afs_xvcb)->readers_reading) (&afs_xvcb) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xvcb, 2); (&afs_xvcb) ->pid_writer = (get_user_struct()->u_procp->p_pid ); (&afs_xvcb)->src_indicator = 300; } while (0); |
| 1602 | for (cb = srvp->cbrs; cb; cb = cbnext) { |
| 1603 | cbnext = cb->next; |
| 1604 | afs_FreeCBR(cb); |
| 1605 | } srvp->cbrs = (struct afs_cbr *)0; |
| 1606 | ReleaseWriteLock(&afs_xvcb)do { ; (&afs_xvcb)->excl_locked &= ~2; if ((&afs_xvcb )->wait_states) Afs_Lock_ReleaseR(&afs_xvcb); (&afs_xvcb )->pid_writer=0; } while (0); |
| 1607 | } |
| 1608 | |
| 1609 | /* If no more srvAddr structs hanging off of this server struct, |
| 1610 | * then clean it up. |
| 1611 | */ |
| 1612 | if (!srvp->addr) { |
| 1613 | /* Remove the server structure from the cell list - if there */ |
| 1614 | afs_RemoveCellEntry(srvp); |
| 1615 | |
| 1616 | /* Remove from the afs_servers hash chain */ |
| 1617 | for (i = 0; i < NSERVERS16; i++) { |
| 1618 | for (pts = &(afs_servers[i]), ts = *pts; ts; |
| 1619 | pts = &(ts->next), ts = *pts) { |
| 1620 | if (ts == srvp) |
| 1621 | break; |
| 1622 | } |
| 1623 | if (ts) |
| 1624 | break; |
| 1625 | } |
| 1626 | if (ts) { |
| 1627 | *pts = ts->next; /* Found it. Remove it */ |
| 1628 | afs_osi_Free(ts, sizeof(struct server)); /* Free it */ |
| 1629 | afs_totalServers--; |
| 1630 | } |
| 1631 | } |
| 1632 | } |
| 1633 | |
| 1634 | /* afs_RemoveSrvAddr() |
| 1635 | * This removes a SrvAddr structure from its server structure. |
| 1636 | * The srvAddr struct is not free'd because it connections may still |
| 1637 | * be open to it. It is up to the calling process to make sure it |
| 1638 | * remains connected to a server struct. |
| 1639 | * The afs_xserver and afs_xsrvAddr locks are assumed taken. |
| 1640 | * It is not removed from the afs_srvAddrs hash chain. |
| 1641 | */ |
| 1642 | void |
| 1643 | afs_RemoveSrvAddr(struct srvAddr *sap) |
| 1644 | { |
| 1645 | struct srvAddr **psa, *sa; |
| 1646 | struct server *srv; |
| 1647 | |
| 1648 | if (!sap) |
| 1649 | return; |
| 1650 | srv = sap->server; |
| 1651 | |
| 1652 | /* Find the srvAddr in the server's list and remove it */ |
| 1653 | for (psa = &(srv->addr), sa = *psa; sa; psa = &(sa->next_sa), sa = *psa) { |
| 1654 | if (sa == sap) |
| 1655 | break; |
| 1656 | } if (sa) { |
| 1657 | *psa = sa->next_sa; |
| 1658 | sa->next_sa = 0; |
| 1659 | sa->server = 0; |
| 1660 | |
| 1661 | /* Flush the server struct since it's IP address has changed */ |
| 1662 | afs_FlushServer(srv); |
| 1663 | } |
| 1664 | } |
| 1665 | |
| 1666 | /* afs_GetCapabilities |
| 1667 | * Try and retrieve capabilities of a given file server. Carps on actual |
| 1668 | * failure. Servers are not expected to support this RPC. */ |
| 1669 | void |
| 1670 | afs_GetCapabilities(struct server *ts) |
| 1671 | { |
| 1672 | Capabilities caps = {0, NULL((void *)0)}; |
| 1673 | struct vrequest treq; |
| 1674 | struct afs_conn *tc; |
| 1675 | struct unixuser *tu; |
| 1676 | struct rx_connection *rxconn; |
| 1677 | afs_int32 code; |
| 1678 | |
| 1679 | if ( !ts || !ts->cell ) |
| 1680 | return; |
| 1681 | if ( !afs_osi_credp ) |
| 1682 | return; |
| 1683 | |
| 1684 | if ((code = afs_InitReq(&treq, afs_osi_credp))) |
| 1685 | return; |
| 1686 | tu = afs_GetUser(treq.uid, ts->cell->cellNum, SHARED_LOCK4); |
| 1687 | if ( !tu ) |
| 1688 | return; |
| 1689 | tc = afs_ConnBySA(ts->addr, ts->cell->fsport, ts->cell->cellNum, tu, 0, 1, |
| 1690 | SHARED_LOCK4, |
| 1691 | &rxconn); |
| 1692 | afs_PutUser(tu, SHARED_LOCK4); |
| 1693 | if ( !tc ) |
| 1694 | return; |
| 1695 | /* InitCallBackStateN, triggered by our RPC, may need this */ |
| 1696 | ReleaseWriteLock(&afs_xserver)do { ; (&afs_xserver)->excl_locked &= ~2; if ((& afs_xserver)->wait_states) Afs_Lock_ReleaseR(&afs_xserver ); (&afs_xserver)->pid_writer=0; } while (0); |
| 1697 | code = RXAFS_GetCapabilities(rxconn, &caps); |
| 1698 | ObtainWriteLock(&afs_xserver, 723)do { ; if (!(&afs_xserver)->excl_locked && !(& afs_xserver)->readers_reading) (&afs_xserver) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xserver, 2); (&afs_xserver )->pid_writer = (get_user_struct()->u_procp->p_pid ) ; (&afs_xserver)->src_indicator = 723; } while (0); |
| 1699 | /* we forced a conn above; important we mark it down if needed */ |
| 1700 | if ((code < 0) && (code != RXGEN_OPCODE-455)) { |
| 1701 | afs_ServerDown(tc->parent->srvr); |
| 1702 | ForceNewConnections(tc->parent->srvr); /* multi homed clients */ |
| 1703 | } |
| 1704 | afs_PutConn(tc, rxconn, SHARED_LOCK4); |
| 1705 | if ( code && code != RXGEN_OPCODE-455 ) { |
| 1706 | afs_warn("RXAFS_GetCapabilities failed with code %d\n", code); |
| 1707 | /* better not be anything to free. we failed! */ |
| 1708 | return; |
| 1709 | } |
| 1710 | |
| 1711 | ts->flags |= SCAPS_KNOWN0x400; |
| 1712 | |
| 1713 | if ( caps.Capabilities_len > 0 ) { |
| 1714 | ts->capabilities = caps.Capabilities_val[0]; |
| 1715 | xdr_freeafs_xdr_free((xdrproc_t)xdr_Capabilities, &caps); |
| 1716 | caps.Capabilities_len = 0; |
| 1717 | caps.Capabilities_val = NULL((void *)0); |
| 1718 | } |
| 1719 | |
| 1720 | } |
| 1721 | |
| 1722 | /* afs_GetServer() |
| 1723 | * Return an updated and properly initialized server structure |
| 1724 | * corresponding to the server ID, cell, and port specified. |
| 1725 | * If one does not exist, then one will be created. |
| 1726 | * aserver and aport must be in NET byte order. |
| 1727 | */ |
| 1728 | struct server * |
| 1729 | afs_GetServer(afs_uint32 * aserverp, afs_int32 nservers, afs_int32 acell, |
| 1730 | u_short aport, afs_int32 locktype, afsUUID * uuidp, |
| 1731 | afs_int32 addr_uniquifier) |
| 1732 | { |
| 1733 | struct server *oldts = 0, *ts, *newts, *orphts = 0; |
| 1734 | struct srvAddr *oldsa, *newsa, *nextsa, *orphsa; |
| 1735 | afs_int32 iphash, k, srvcount = 0; |
| 1736 | unsigned int srvhash; |
| 1737 | |
| 1738 | AFS_STATCNT(afs_GetServer)((afs_cmstats.callInfo.C_afs_GetServer)++); |
| 1739 | |
| 1740 | ObtainSharedLock(&afs_xserver, 13)do { ; if (!(&afs_xserver)->excl_locked) (&afs_xserver ) -> excl_locked = 4; else Afs_Lock_Obtain(&afs_xserver , 4); (&afs_xserver)->pid_writer = (get_user_struct()-> u_procp->p_pid ); (&afs_xserver)->src_indicator = 13 ; } while (0); |
| 1741 | |
| 1742 | /* Check if the server struct exists and is up to date */ |
| 1743 | if (!uuidp) { |
| 1744 | if (nservers != 1) |
| 1745 | panic("afs_GetServer: incorect count of servers")do{fprintf(__stderrp, "%s", "afs_GetServer: incorect count of servers" );do{if (!(0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 1745);}while(0);}while(0); |
| 1746 | ObtainReadLock(&afs_xsrvAddr)do { ; if (!((&afs_xsrvAddr)->excl_locked & 2)) (( &afs_xsrvAddr)->readers_reading)++; else Afs_Lock_Obtain (&afs_xsrvAddr, 1); (&afs_xsrvAddr)->pid_last_reader = (get_user_struct()->u_procp->p_pid ); } while (0); |
| 1747 | ts = afs_FindServer(aserverp[0], aport, NULL((void *)0), locktype); |
| 1748 | ReleaseReadLock(&afs_xsrvAddr)do { ; if (!(--((&afs_xsrvAddr)->readers_reading)) && (&afs_xsrvAddr)->wait_states) Afs_Lock_ReleaseW(& afs_xsrvAddr) ; if ( (&afs_xsrvAddr)->pid_last_reader == (get_user_struct()->u_procp->p_pid ) ) (&afs_xsrvAddr )->pid_last_reader =0; } while (0); |
| 1749 | if (ts && !(ts->flags & SRVR_MULTIHOMED0x40)) { |
| 1750 | /* Found a server struct that is not multihomed and has the |
| 1751 | * IP address associated with it. A correct match. |
| 1752 | */ |
| 1753 | ReleaseSharedLock(&afs_xserver)do { ; (&afs_xserver)->excl_locked &= ~(4 | 2); if ((&afs_xserver)->wait_states) Afs_Lock_ReleaseR(& afs_xserver); (&afs_xserver)->pid_writer=0; } while (0 ); |
| 1754 | return (ts); |
| 1755 | } |
| 1756 | } else { |
| 1757 | if (nservers <= 0) |
| 1758 | panic("afs_GetServer: incorrect count of servers")do{fprintf(__stderrp, "%s", "afs_GetServer: incorrect count of servers" );do{if (!(0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 1758);}while(0);}while(0); |
| 1759 | ts = afs_FindServer(0, aport, uuidp, locktype); |
| 1760 | if (ts && (ts->sr_addr_uniquifier_suid._srvUuid.addr_uniquifier == addr_uniquifier) && ts->addr) { |
| 1761 | /* Found a server struct that is multihomed and same |
| 1762 | * uniqufier (same IP addrs). The above if statement is the |
| 1763 | * same as in InstallUVolumeEntry(). |
| 1764 | */ |
| 1765 | ReleaseSharedLock(&afs_xserver)do { ; (&afs_xserver)->excl_locked &= ~(4 | 2); if ((&afs_xserver)->wait_states) Afs_Lock_ReleaseR(& afs_xserver); (&afs_xserver)->pid_writer=0; } while (0 ); |
| 1766 | return ts; |
| 1767 | } |
| 1768 | if (ts) |
| 1769 | oldts = ts; /* Will reuse if same uuid */ |
| 1770 | } |
| 1771 | |
| 1772 | UpgradeSToWLock(&afs_xserver, 36)do { ; if (!(&afs_xserver)->readers_reading) (&afs_xserver )->excl_locked = 2; else Afs_Lock_Obtain(&afs_xserver, 6); (&afs_xserver)->pid_writer = (get_user_struct()-> u_procp->p_pid ); (&afs_xserver)->src_indicator = 36 ; } while (0); |
| 1773 | ObtainWriteLock(&afs_xsrvAddr, 116)do { ; if (!(&afs_xsrvAddr)->excl_locked && !( &afs_xsrvAddr)->readers_reading) (&afs_xsrvAddr) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xsrvAddr, 2); (&afs_xsrvAddr)->pid_writer = (get_user_struct()-> u_procp->p_pid ); (&afs_xsrvAddr)->src_indicator = 116 ; } while (0); |
| 1774 | |
| 1775 | srvcount = afs_totalServers; |
| 1776 | |
| 1777 | /* Reuse/allocate a new server structure */ |
| 1778 | if (oldts) { |
| 1779 | newts = oldts; |
| 1780 | } else { |
| 1781 | newts = afs_osi_Alloc(sizeof(struct server)); |
| 1782 | if (!newts) |
| 1783 | panic("malloc of server struct")do{fprintf(__stderrp, "%s", "malloc of server struct");do{if ( !(0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 1783);}while(0);}while(0); |
| 1784 | afs_totalServers++; |
| 1785 | memset(newts, 0, sizeof(struct server)); |
| 1786 | |
| 1787 | /* Add the server struct to the afs_servers[] hash chain */ |
| 1788 | srvhash = |
| 1789 | (uuidp ? (afs_uuid_hash(uuidp) % NSERVERS16) : SHash(aserverp[0])(((__builtin_constant_p(aserverp[0]) ? ((((__uint32_t)(aserverp [0])) >> 24) | ((((__uint32_t)(aserverp[0])) & (0xff << 16)) >> 8) | ((((__uint32_t)(aserverp[0])) & (0xff << 8)) << 8) | (((__uint32_t)(aserverp[0]) ) << 24)) : __bswap32_var(aserverp[0]))) & (16 -1))); |
| 1790 | newts->next = afs_servers[srvhash]; |
| 1791 | afs_servers[srvhash] = newts; |
| 1792 | } |
| 1793 | |
| 1794 | /* Initialize the server structure */ |
| 1795 | if (uuidp) { /* Multihomed */ |
| 1796 | newts->sr_uuid_suid._srvUuid.suuid = *uuidp; |
| 1797 | newts->sr_addr_uniquifier_suid._srvUuid.addr_uniquifier = addr_uniquifier; |
| 1798 | newts->flags |= SRVR_MULTIHOMED0x40; |
| 1799 | } |
| 1800 | if (acell) |
| 1801 | newts->cell = afs_GetCell(acell, 0); |
| 1802 | |
| 1803 | /* For each IP address we are registering */ |
| 1804 | for (k = 0; k < nservers; k++) { |
| 1805 | iphash = SHash(aserverp[k])(((__builtin_constant_p(aserverp[k]) ? ((((__uint32_t)(aserverp [k])) >> 24) | ((((__uint32_t)(aserverp[k])) & (0xff << 16)) >> 8) | ((((__uint32_t)(aserverp[k])) & (0xff << 8)) << 8) | (((__uint32_t)(aserverp[k]) ) << 24)) : __bswap32_var(aserverp[k]))) & (16 -1)); |
| 1806 | |
| 1807 | /* Check if the srvAddr structure already exists. If so, remove |
| 1808 | * it from its server structure and add it to the new one. |
| 1809 | */ |
| 1810 | for (oldsa = afs_srvAddrs[iphash]; oldsa; oldsa = oldsa->next_bkt) { |
| 1811 | if ((oldsa->sa_ip == aserverp[k]) && (oldsa->sa_portal == aport)) |
| 1812 | break; |
| 1813 | } |
| 1814 | if (oldsa && (oldsa->server != newts)) { |
| 1815 | afs_RemoveSrvAddr(oldsa); /* Remove from its server struct */ |
| 1816 | oldsa->next_sa = newts->addr; /* Add to the new server struct */ |
| 1817 | newts->addr = oldsa; |
| 1818 | } |
| 1819 | |
| 1820 | /* Reuse/allocate a new srvAddr structure */ |
| 1821 | if (oldsa) { |
| 1822 | newsa = oldsa; |
| 1823 | } else { |
| 1824 | newsa = afs_osi_Alloc(sizeof(struct srvAddr)); |
| 1825 | if (!newsa) |
| 1826 | panic("malloc of srvAddr struct")do{fprintf(__stderrp, "%s", "malloc of srvAddr struct");do{if (!(0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 1826);}while(0);}while(0); |
| 1827 | afs_totalSrvAddrs++; |
| 1828 | memset(newsa, 0, sizeof(struct srvAddr)); |
| 1829 | |
| 1830 | /* Add the new srvAddr to the afs_srvAddrs[] hash chain */ |
| 1831 | newsa->next_bkt = afs_srvAddrs[iphash]; |
| 1832 | afs_srvAddrs[iphash] = newsa; |
| 1833 | |
| 1834 | /* Hang off of the server structure */ |
| 1835 | newsa->next_sa = newts->addr; |
| 1836 | newts->addr = newsa; |
| 1837 | |
| 1838 | /* Initialize the srvAddr Structure */ |
| 1839 | newsa->sa_ip = aserverp[k]; |
| 1840 | newsa->sa_portal = aport; |
| 1841 | } |
| 1842 | |
| 1843 | /* Update the srvAddr Structure */ |
| 1844 | newsa->server = newts; |
| 1845 | if (newts->flags & SRVR_ISDOWN0x20) |
| 1846 | newsa->sa_flags |= SRVADDR_ISDOWN0x20; |
| 1847 | if (uuidp) |
| 1848 | newsa->sa_flags |= SRVADDR_MH1; |
| 1849 | else |
| 1850 | newsa->sa_flags &= ~SRVADDR_MH1; |
| 1851 | |
| 1852 | /* Compute preference values and resort */ |
| 1853 | if (!newsa->sa_iprank) { |
| 1854 | afs_SetServerPrefs(newsa); /* new server rank */ |
| 1855 | } |
| 1856 | } |
| 1857 | afs_SortOneServer(newts); /* Sort by rank */ |
| 1858 | |
| 1859 | /* If we reused the server struct, remove any of its srvAddr |
| 1860 | * structs that will no longer be associated with this server. |
| 1861 | */ |
| 1862 | if (oldts) { /* reused the server struct */ |
| 1863 | for (orphsa = newts->addr; orphsa; orphsa = nextsa) { |
| 1864 | nextsa = orphsa->next_sa; |
| 1865 | for (k = 0; k < nservers; k++) { |
| 1866 | if (orphsa->sa_ip == aserverp[k]) |
| 1867 | break; /* belongs */ |
| 1868 | } |
| 1869 | if (k < nservers) |
| 1870 | continue; /* belongs */ |
| 1871 | |
| 1872 | /* Have a srvAddr struct. Now get a server struct (if not already) */ |
| 1873 | if (!orphts) { |
| 1874 | orphts = afs_osi_Alloc(sizeof(struct server)); |
| 1875 | if (!orphts) |
| 1876 | panic("malloc of lo server struct")do{fprintf(__stderrp, "%s", "malloc of lo server struct");do{ if (!(0)) AssertionFailed("/home/wollman/openafs/src/afs/afs_server.c" , 1876);}while(0);}while(0); |
| 1877 | memset(orphts, 0, sizeof(struct server)); |
| 1878 | afs_totalServers++; |
| 1879 | |
| 1880 | /* Add the orphaned server to the afs_servers[] hash chain. |
| 1881 | * Its iphash does not matter since we never look up the server |
| 1882 | * in the afs_servers table by its ip address (only by uuid - |
| 1883 | * which this has none). |
| 1884 | */ |
| 1885 | iphash = SHash(aserverp[k])(((__builtin_constant_p(aserverp[k]) ? ((((__uint32_t)(aserverp [k])) >> 24) | ((((__uint32_t)(aserverp[k])) & (0xff << 16)) >> 8) | ((((__uint32_t)(aserverp[k])) & (0xff << 8)) << 8) | (((__uint32_t)(aserverp[k]) ) << 24)) : __bswap32_var(aserverp[k]))) & (16 -1)); |
| 1886 | orphts->next = afs_servers[iphash]; |
| 1887 | afs_servers[iphash] = orphts; |
| 1888 | |
| 1889 | if (acell) |
| 1890 | orphts->cell = afs_GetCell(acell, 0); |
| 1891 | } |
| 1892 | |
| 1893 | /* Hang the srvAddr struct off of the server structure. The server |
| 1894 | * may have multiple srvAddrs, but it won't be marked multihomed. |
| 1895 | */ |
| 1896 | afs_RemoveSrvAddr(orphsa); /* remove */ |
| 1897 | orphsa->next_sa = orphts->addr; /* hang off server struct */ |
| 1898 | orphts->addr = orphsa; |
| 1899 | orphsa->server = orphts; |
| 1900 | orphsa->sa_flags |= SRVADDR_NOUSE0x40; /* flag indicating not in use */ |
| 1901 | orphsa->sa_flags &= ~SRVADDR_MH1; /* Not multihomed */ |
| 1902 | } |
| 1903 | } |
| 1904 | |
| 1905 | srvcount = afs_totalServers - srvcount; /* # servers added and removed */ |
| 1906 | if (srvcount) { |
| 1907 | struct afs_stats_SrvUpDownInfo *upDownP; |
| 1908 | /* With the introduction of this new record, we need to adjust the |
| 1909 | * proper individual & global server up/down info. |
| 1910 | */ |
| 1911 | upDownP = GetUpDownStats(newts); |
| 1912 | upDownP->numTtlRecords += srvcount; |
| 1913 | afs_stats_cmperf.srvRecords += srvcount; |
| 1914 | if (afs_stats_cmperf.srvRecords > afs_stats_cmperf.srvRecordsHWM) |
| 1915 | afs_stats_cmperf.srvRecordsHWM = afs_stats_cmperf.srvRecords; |
| 1916 | } |
| 1917 | |
| 1918 | ReleaseWriteLock(&afs_xsrvAddr)do { ; (&afs_xsrvAddr)->excl_locked &= ~2; if ((& afs_xsrvAddr)->wait_states) Afs_Lock_ReleaseR(&afs_xsrvAddr ); (&afs_xsrvAddr)->pid_writer=0; } while (0); |
| 1919 | |
| 1920 | if ( aport == AFS_FSPORT((unsigned short) (__builtin_constant_p(7000) ? (__uint16_t)( ((__uint16_t)(7000)) << 8 | ((__uint16_t)(7000)) >> 8) : __bswap16_var(7000))) && !(newts->flags & SCAPS_KNOWN0x400)) |
| 1921 | afs_GetCapabilities(newts); |
| 1922 | |
| 1923 | ReleaseWriteLock(&afs_xserver)do { ; (&afs_xserver)->excl_locked &= ~2; if ((& afs_xserver)->wait_states) Afs_Lock_ReleaseR(&afs_xserver ); (&afs_xserver)->pid_writer=0; } while (0); |
| 1924 | return (newts); |
| 1925 | } /* afs_GetServer */ |
| 1926 | |
| 1927 | void |
| 1928 | afs_ActivateServer(struct srvAddr *sap) |
| 1929 | { |
| 1930 | osi_timeval_t currTime; /*Filled with current time */ |
| 1931 | osi_timeval_t *currTimeP; /*Ptr to above */ |
| 1932 | struct afs_stats_SrvUpDownInfo *upDownP; /*Ptr to up/down info record */ |
| 1933 | struct server *aserver = sap->server; |
| 1934 | |
| 1935 | if (!(aserver->flags & AFS_SERVER_FLAG_ACTIVATED0x01)) { |
| 1936 | /* |
| 1937 | * This server record has not yet been activated. Go for it, |
| 1938 | * recording its ``birth''. |
| 1939 | */ |
| 1940 | aserver->flags |= AFS_SERVER_FLAG_ACTIVATED0x01; |
| 1941 | currTimeP = &currTime; |
| 1942 | osi_GetuTime(currTimeP)osi_GetTime(currTimeP); |
| 1943 | aserver->activationTime = currTime.tv_sec; |
| 1944 | upDownP = GetUpDownStats(aserver); |
| 1945 | if (aserver->flags & SRVR_ISDOWN0x20) { |
| 1946 | upDownP->numDownRecords++; |
| 1947 | } else { |
| 1948 | upDownP->numUpRecords++; |
| 1949 | upDownP->numRecordsNeverDown++; |
| 1950 | } |
| 1951 | } |
| 1952 | } |
| 1953 | |
| 1954 | void |
| 1955 | afs_RemoveAllConns(void) |
| 1956 | { |
| 1957 | int i; |
| 1958 | struct server *ts, *nts; |
| 1959 | struct srvAddr *sa; |
| 1960 | |
| 1961 | ObtainReadLock(&afs_xserver)do { ; if (!((&afs_xserver)->excl_locked & 2)) ((& afs_xserver)->readers_reading)++; else Afs_Lock_Obtain(& afs_xserver, 1); (&afs_xserver)->pid_last_reader = (get_user_struct ()->u_procp->p_pid ); } while (0); |
| 1962 | ObtainWriteLock(&afs_xconn, 1001)do { ; if (!(&afs_xconn)->excl_locked && !(& afs_xconn)->readers_reading) (&afs_xconn) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xconn, 2); (&afs_xconn )->pid_writer = (get_user_struct()->u_procp->p_pid ) ; (&afs_xconn)->src_indicator = 1001; } while (0); |
| 1963 | |
| 1964 | /*printf("Destroying connections ... ");*/ |
| 1965 | for (i = 0; i < NSERVERS16; i++) { |
| 1966 | for (ts = afs_servers[i]; ts; ts = nts) { |
| 1967 | nts = ts->next; |
| 1968 | for (sa = ts->addr; sa; sa = sa->next_sa) { |
| 1969 | if (sa->conns) { |
| 1970 | afs_ReleaseConns(sa->conns); |
| 1971 | sa->conns = NULL((void *)0); |
| 1972 | } |
| 1973 | } |
| 1974 | } |
| 1975 | } |
| 1976 | /*printf("done\n");*/ |
| 1977 | |
| 1978 | ReleaseWriteLock(&afs_xconn)do { ; (&afs_xconn)->excl_locked &= ~2; if ((& afs_xconn)->wait_states) Afs_Lock_ReleaseR(&afs_xconn) ; (&afs_xconn)->pid_writer=0; } while (0); |
| 1979 | ReleaseReadLock(&afs_xserver)do { ; if (!(--((&afs_xserver)->readers_reading)) && (&afs_xserver)->wait_states) Afs_Lock_ReleaseW(&afs_xserver ) ; if ( (&afs_xserver)->pid_last_reader == (get_user_struct ()->u_procp->p_pid ) ) (&afs_xserver)->pid_last_reader =0; } while (0); |
| 1980 | |
| 1981 | } |
| 1982 | |
| 1983 | void |
| 1984 | afs_MarkAllServersUp(void) |
| 1985 | { |
| 1986 | int i; |
| 1987 | struct server *ts; |
| 1988 | struct srvAddr *sa; |
| 1989 | |
| 1990 | ObtainWriteLock(&afs_xserver, 721)do { ; if (!(&afs_xserver)->excl_locked && !(& afs_xserver)->readers_reading) (&afs_xserver) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xserver, 2); (&afs_xserver )->pid_writer = (get_user_struct()->u_procp->p_pid ) ; (&afs_xserver)->src_indicator = 721; } while (0); |
| 1991 | ObtainWriteLock(&afs_xsrvAddr, 722)do { ; if (!(&afs_xsrvAddr)->excl_locked && !( &afs_xsrvAddr)->readers_reading) (&afs_xsrvAddr) -> excl_locked = 2; else Afs_Lock_Obtain(&afs_xsrvAddr, 2); (&afs_xsrvAddr)->pid_writer = (get_user_struct()-> u_procp->p_pid ); (&afs_xsrvAddr)->src_indicator = 722 ; } while (0); |
| 1992 | for (i = 0; i< NSERVERS16; i++) { |
| 1993 | for (ts = afs_servers[i]; ts; ts = ts->next) { |
| 1994 | for (sa = ts->addr; sa; sa = sa->next_sa) { |
| 1995 | afs_MarkServerUpOrDown(sa, 0); |
| 1996 | } |
| 1997 | } |
| 1998 | } |
| 1999 | ReleaseWriteLock(&afs_xsrvAddr)do { ; (&afs_xsrvAddr)->excl_locked &= ~2; if ((& afs_xsrvAddr)->wait_states) Afs_Lock_ReleaseR(&afs_xsrvAddr ); (&afs_xsrvAddr)->pid_writer=0; } while (0); |
| 2000 | ReleaseWriteLock(&afs_xserver)do { ; (&afs_xserver)->excl_locked &= ~2; if ((& afs_xserver)->wait_states) Afs_Lock_ReleaseR(&afs_xserver ); (&afs_xserver)->pid_writer=0; } while (0); |
| 2001 | } |