2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 /* kdump for SGI needs MP and SP versions of rx_serverQueueEntry,
12 * rx_peer, rx_connection and rx_call structs. rx.h gets included a
13 * second time to pick up mp_ versions of those structs. Currently
14 * the affected struct's have #ifdef's in them for the second pass.
15 * This should change once we start using only ANSI compilers.
16 * Actually, kdump does not use rx_serverQueueEntry, but I'm including
17 * it for completeness.
26 /* Substitute VOID (char) for void, because some compilers are confused by void
27 * in some situations */
33 #include "../rx/rx_kmutex.h"
34 #include "../rx/rx_kernel.h"
35 #include "../rx/rx_clock.h"
36 #include "../rx/rx_event.h"
37 #include "../rx/rx_queue.h"
38 #include "../rx/rx_packet.h"
39 #include "../rx/rx_misc.h"
40 #include "../netinet/in.h"
42 # include <sys/types.h>
44 #ifdef AFS_PTHREAD_ENV
45 # include <rx/rx_pthread.h>
53 # include "rx_clock.h"
54 # include "rx_event.h"
55 # include "rx_packet.h"
59 # include <netinet/in.h>
64 /* Configurable parameters */
65 #define RX_IDLE_DEAD_TIME 60 /* default idle dead time */
66 #define RX_MAX_SERVICES 20 /* Maximum number of services that may be installed */
67 #define RX_DEFAULT_STACK_SIZE 16000 /* Default process stack size; overriden by rx_SetStackSize */
69 /* This parameter should not normally be changed */
70 #define RX_PROCESS_PRIORITY LWP_NORMAL_PRIORITY
72 /* backoff is fixed point binary. Ie, units of 1/4 seconds */
73 #define MAXBACKOFF 0x1F
75 #define ADDRSPERSITE 16
77 /* Exported interfaces XXXX clean this up: not all of these are exported*/
79 struct rx_service *rx_NewService();
80 struct rx_connection *rx_NewConnection();
81 struct rx_call *rx_NewCall();
82 struct rx_call *rx_GetCall(); /* Not normally used, but not obsolete */
83 afs_int32 rx_EndCall();
84 int rx_AllocPackets();
85 void rx_FreePackets();
94 void rxi_DeleteCachedConnections();
95 void rxi_DestroyConnection();
96 void rxi_CleanupConnection();
100 int rxi_WritevAlloc();
103 int rxi_FillReadVec();
104 void rxi_FlushWrite();
105 int rxi_getAllAddrMaskMtu();
107 void rxi_FreePacket();
108 void rxi_FreePacketNoLock();
109 int rxi_AllocDataBuf();
110 void rxi_RestoreDataBufs();
112 void rxi_InitializeThreadSupport();
115 int rxi_IsConnInteresting();
116 afs_int32 rx_SlowReadPacket();
117 afs_int32 rx_SlowWritePacket();
118 afs_int32 rx_SlowGetInt32();
119 void rxi_StopListener();
120 void rxi_InitPeerParams();
121 void rxi_FreeAllPackets();
122 void rxi_SendPacketList();
123 void rxi_SendPacket();
124 void rxi_MorePackets();
125 void rxi_MorePacketsNoLock();
126 void rxi_PacketsUnWait();
127 void rx_CheckPackets();
129 void rx_PrintStats();
130 void rx_PrintPeerStats();
131 void rx_SetArrivalProc();
134 void shutdown_rxevent();
138 typedef void (*rx_destructor_t)(void *);
139 int rx_KeyCreate(rx_destructor_t);
140 void *rx_GetSpecific(struct rx_connection *conn, int key);
141 void rx_SetSpecific(struct rx_connection *conn, int key, void *ptr);
142 osi_socket rxi_GetUDPSocket(u_short port);
144 int ntoh_syserr_conv(int error);
147 #define RX_DONTWAIT 0
149 #define rx_ConnectionOf(call) ((call)->conn)
150 #define rx_PeerOf(conn) ((conn)->peer)
151 #define rx_HostOf(peer) ((peer)->host)
152 #define rx_PortOf(peer) ((peer)->port)
153 #define rx_SetLocalStatus(call, status) ((call)->localStatus = (status))
154 #define rx_GetLocalStatus(call, status) ((call)->localStatus)
155 #define rx_GetRemoteStatus(call) ((call)->remoteStatus)
156 #define rx_Error(call) ((call)->error)
157 #define rx_ConnError(conn) ((conn)->error)
158 #define rx_IsServerConn(conn) ((conn)->type == RX_SERVER_CONNECTION)
159 #define rx_IsClientConn(conn) ((conn)->type == RX_CLIENT_CONNECTION)
160 /* Don't use these; use the IsServerConn style */
161 #define rx_ServerConn(conn) ((conn)->type == RX_SERVER_CONNECTION)
162 #define rx_ClientConn(conn) ((conn)->type == RX_CLIENT_CONNECTION)
163 #define rx_IsUsingPktCksum(conn) ((conn)->flags & RX_CONN_USING_PACKET_CKSUM)
164 #define rx_ServiceIdOf(conn) ((conn)->serviceId)
165 #define rx_SecurityClassOf(conn) ((conn)->securityIndex)
166 #define rx_SecurityObjectOf(conn) ((conn)->securityObject)
169 * Macros callable by the user to further define attributes of a
170 * service. Must be called before rx_StartServer
173 /* Set the service stack size. This currently just sets the stack
174 * size for all processes to be the maximum seen, so far */
175 #define rx_SetStackSize(service, stackSize) \
176 rx_stackSize = (((stackSize) > rx_stackSize)? stackSize: rx_stackSize)
178 /* Set minimum number of processes guaranteed to be available for this
179 * service at all times */
180 #define rx_SetMinProcs(service, min) ((service)->minProcs = (min))
182 /* Set maximum number of processes that will be made available to this
183 * service (also a guarantee that this number will be made available
184 * if there is no competition) */
185 #define rx_SetMaxProcs(service, max) ((service)->maxProcs = (max))
187 /* Define a procedure to be called just before a server connection is destroyed */
188 #define rx_SetDestroyConnProc(service,proc) ((service)->destroyConnProc = (proc))
190 /* Define procedure to set service dead time */
191 #define rx_SetIdleDeadTime(service,time) ((service)->idleDeadTime = (time))
193 /* Define procedures for getting and setting before and after execute-request procs */
194 #define rx_SetAfterProc(service,proc) ((service)->afterProc = (proc))
195 #define rx_SetBeforeProc(service,proc) ((service)->beforeProc = (proc))
196 #define rx_GetAfterProc(service) ((service)->afterProc)
197 #define rx_GetBeforeProc(service) ((service)->beforeProc)
199 /* Define a procedure to be called when a server connection is created */
200 #define rx_SetNewConnProc(service, proc) ((service)->newConnProc = (proc))
202 /* NOTE: We'll probably redefine the following three routines, again, sometime. */
204 /* Set the connection dead time for any connections created for this service (server only) */
205 #define rx_SetServiceDeadTime(service, seconds) ((service)->secondsUntilDead = (seconds))
207 /* Set connection dead time, for a specific client or server connection */
208 extern void rx_SetConnDeadTime();
210 /* Set connection hard timeout for a connection */
211 #define rx_SetConnHardDeadTime(conn, seconds) ((conn)->hardDeadTime = (seconds))
213 /* Set the overload threshold and the overload error */
214 #define rx_SetBusyThreshold(threshold, code) (rx_BusyThreshold=(threshold),rx_BusyError=(code))
216 /* If this flag is set,no new requests are processed by rx, all new requests are
217 returned with an error code of RX_CALL_DEAD ( transient error ) */
218 #define rx_SetRxTranquil() (rx_tranquil = 1)
219 #define rx_ClearRxTranquil() (rx_tranquil = 0)
221 /* Set the threshold and time to delay aborts for consecutive errors */
222 #define rx_SetCallAbortThreshold(A) (rxi_callAbortThreshhold = (A))
223 #define rx_SetCallAbortDelay(A) (rxi_callAbortDelay = (A))
224 #define rx_SetConnAbortThreshold(A) (rxi_connAbortThreshhold = (A))
225 #define rx_SetConnAbortDelay(A) (rxi_connAbortDelay = (A))
227 #define rx_GetCallAbortCode(call) ((call)->abortCode)
228 #define rx_SetCallAbortCode(call, code) ((call)->abortCode = (code))
230 #define cpspace(call) ((call)->curlen)
231 #define cppos(call) ((call)->curpos)
233 #define rx_Read(call, buf, nbytes) rx_ReadProc(call, buf, nbytes)
234 #define rx_Read32(call, value) rx_ReadProc32(call, value)
235 #define rx_Readv(call, iov, nio, maxio, nbytes) \
236 rx_ReadvProc(call, iov, nio, maxio, nbytes)
237 #define rx_Write(call, buf, nbytes) rx_WriteProc(call, buf, nbytes)
238 #define rx_Write32(call, value) rx_WriteProc32(call, value)
239 #define rx_Writev(call, iov, nio, nbytes) \
240 rx_WritevProc(call, iov, nio, nbytes)
242 /* This is the maximum size data packet that can be sent on this connection, accounting for security module-specific overheads. */
243 #define rx_MaxUserDataSize(call) ((call)->MTU - RX_HEADER_SIZE - (call)->conn->securityHeaderSize - (call)->conn->securityMaxTrailerSize)
245 /* Macros to turn the hot thread feature on and off. Enabling hot threads
246 * allows the listener thread to trade places with an idle worker thread,
247 * which moves the context switch from listener to worker out of the
250 #define rx_EnableHotThread() (rx_enable_hot_thread = 1)
251 #define rx_DisableHotThread() (rx_enable_hot_thread = 0)
253 struct rx_securityObjectStats {
254 char type; /* 0:unk 1:null,2:vab 3:kad */
256 char sparec[10]; /* force correct alignment */
257 afs_int32 flags; /* 1=>unalloc, 2=>auth, 4=>expired */
259 afs_uint32 packetsReceived;
260 afs_uint32 packetsSent;
261 afs_uint32 bytesReceived;
262 afs_uint32 bytesSent;
267 /* XXXX (rewrite this description) A security class object contains a set of
268 * procedures and some private data to implement a security model for rx
269 * connections. These routines are called by rx as appropriate. Rx knows
270 * nothing about the internal details of any particular security model, or
271 * about security state. Rx does maintain state per connection on behalf of
272 * the security class. Each security class implementation is also expected to
273 * provide routines to create these objects. Rx provides a basic routine to
274 * allocate one of these objects; this routine must be called by the class. */
275 struct rx_securityClass {
276 struct rx_securityOps {
277 int (*op_Close)(/* obj */);
278 int (*op_NewConnection)(/* obj, conn */);
279 int (*op_PreparePacket)(/* obj, call, packet */);
280 int (*op_SendPacket)(/*obj, call, packet */);
281 int (*op_CheckAuthentication)(/*obj,conn*/);
282 int (*op_CreateChallenge)(/*obj,conn*/);
283 int (*op_GetChallenge)(/*obj,conn,packet*/);
284 int (*op_GetResponse)(/*obj,conn,packet*/);
285 int (*op_CheckResponse)(/*obj,conn,packet*/);
286 int (*op_CheckPacket) (/*obj,call,packet*/);
287 int (*op_DestroyConnection)(/*obj, conn*/);
288 int (*op_GetStats)(/*obj, conn, stats*/);
297 #define RXS_OP(obj,op,args) ((obj && (obj->ops->op_ ## op)) ? (*(obj)->ops->op_ ## op)args : 0)
299 #define RXS_Close(obj) RXS_OP(obj,Close,(obj))
300 #define RXS_NewConnection(obj,conn) RXS_OP(obj,NewConnection,(obj,conn))
301 #define RXS_PreparePacket(obj,call,packet) RXS_OP(obj,PreparePacket,(obj,call,packet))
302 #define RXS_SendPacket(obj,call,packet) RXS_OP(obj,SendPacket,(obj,call,packet))
303 #define RXS_CheckAuthentication(obj,conn) RXS_OP(obj,CheckAuthentication,(obj,conn))
304 #define RXS_CreateChallenge(obj,conn) RXS_OP(obj,CreateChallenge,(obj,conn))
305 #define RXS_GetChallenge(obj,conn,packet) RXS_OP(obj,GetChallenge,(obj,conn,packet))
306 #define RXS_GetResponse(obj,conn,packet) RXS_OP(obj,GetResponse,(obj,conn,packet))
307 #define RXS_CheckResponse(obj,conn,packet) RXS_OP(obj,CheckResponse,(obj,conn,packet))
308 #define RXS_CheckPacket(obj,call,packet) RXS_OP(obj,CheckPacket,(obj,call,packet))
309 #define RXS_DestroyConnection(obj,conn) RXS_OP(obj,DestroyConnection,(obj,conn))
310 #define RXS_GetStats(obj,conn,stats) RXS_OP(obj,GetStats,(obj,conn,stats))
312 /* A service is installed by rx_NewService, and specifies a service type that
313 * is exported by this process. Incoming calls are stamped with the service
314 * type, and must match an installed service for the call to be accepted.
315 * Each service exported has a (port,serviceId) pair to uniquely identify it.
316 * It is also named: this is intended to allow a remote statistics gathering
317 * program to retrieve per service statistics without having to know the local
318 * service id's. Each service has a number of
321 /* security objects (instances of security classes) which implement
322 * various types of end-to-end security protocols for connections made
323 * to this service. Finally, there are two parameters controlling the
324 * number of requests which may be executed in parallel by this
325 * service: minProcs is the number of requests to this service which
326 * are guaranteed to be able to run in parallel at any time; maxProcs
327 * has two meanings: it limits the total number of requests which may
328 * execute in parallel and it also guarantees that that many requests
329 * may be handled in parallel if no other service is handling any
333 u_short serviceId; /* Service number */
334 u_short servicePort; /* UDP port for this service */
335 char *serviceName; /* Name of the service */
336 osi_socket socket; /* socket structure or file descriptor */
337 u_short nRequestsRunning; /* Number of requests currently in progress */
338 u_short nSecurityObjects; /* Number of entries in security objects array */
339 struct rx_securityClass **securityObjects; /* Array of security class objects */
340 afs_int32 (*executeRequestProc)(); /* Routine to call when an rpc request is received */
341 VOID (*destroyConnProc)(); /* Routine to call when a server connection is destroyed */
342 VOID (*newConnProc)(); /* Routine to call when a server connection is created */
343 VOID (*beforeProc)(); /* routine to call before a call is executed */
344 VOID (*afterProc)(); /* routine to call after a call is executed */
345 u_short maxProcs; /* Maximum procs to be used for this service */
346 u_short minProcs; /* Minimum # of requests guaranteed executable simultaneously */
347 u_short connDeadTime; /* Seconds until a client of this service will be declared dead, if it is not responding */
348 u_short idleDeadTime; /* Time a server will wait for I/O to start up again */
351 #endif /* KDUMP_RX_LOCK */
353 /* A server puts itself on an idle queue for a service using an
354 * instance of the following structure. When a call arrives, the call
355 * structure pointer is placed in "newcall", the routine to execute to
356 * service the request is placed in executeRequestProc, and the
357 * process is woken up. The queue entry's address is used for the
358 * sleep/wakeup. If socketp is non-null, then this thread is willing
359 * to become a listener thread. A thread sets *socketp to -1 before
360 * sleeping. If *socketp is not -1 when the thread awakes, it is now
361 * the listener thread for *socketp. When socketp is non-null, tno
362 * contains the server's threadID, which is used to make decitions in GetCall.
365 struct rx_serverQueueEntry_rx_lock {
367 struct rx_serverQueueEntry {
369 struct rx_queue queueItemHeader;
371 struct rx_call_rx_lock *newcall;
373 struct rx_call *newcall;
375 #ifdef RX_ENABLE_LOCKS
383 #ifndef KDUMP_RX_LOCK
384 /* Bottom n-bits of the Call Identifier give the call number */
385 #define RX_MAXCALLS 4 /* Power of 2; max async calls per connection */
386 #define RX_CIDSHIFT 2 /* Log2(RX_MAXCALLS) */
387 #define RX_CHANNELMASK (RX_MAXCALLS-1)
388 #define RX_CIDMASK (~RX_CHANNELMASK)
389 #endif /* !KDUMP_RX_LOCK */
391 /* A peer refers to a peer process, specified by a (host,port) pair. There may be more than one peer on a given host. */
393 struct rx_peer_rx_lock {
394 struct rx_peer_rx_lock *next; /* Next in hash conflict or free list */
397 struct rx_peer *next; /* Next in hash conflict or free list */
399 #ifdef RX_ENABLE_LOCKS
400 afs_kmutex_t peer_lock; /* Lock peer */
401 #endif /* RX_ENABLE_LOCKS */
402 afs_uint32 host; /* Remote IP address, in net byte order */
403 u_short port; /* Remote UDP port, in net byte order */
405 /* interface mtu probably used for this host - includes RX Header */
406 u_short ifMTU; /* doesn't include IP header */
408 /* For garbage collection */
409 afs_uint32 idleWhen; /* When the refcountwent to zero */
410 short refCount; /* Reference count for this structure */
412 /* Congestion control parameters */
413 u_char burstSize; /* Reinitialization size for the burst parameter */
414 u_char burst; /* Number of packets that can be transmitted right now, without pausing */
415 struct clock burstWait; /* Delay until new burst is allowed */
416 struct rx_queue congestionQueue; /* Calls that are waiting for non-zero burst value */
417 int rtt; /* Round trip time, measured in milliseconds/8 */
418 int rtt_dev; /* rtt smoothed error, in milliseconds/4 */
419 struct clock timeout; /* Current retransmission delay */
420 int nSent; /* Total number of distinct data packets sent, not including retransmissions */
421 int reSends; /* Total number of retransmissions for this peer, since this structure was created */
423 /* Skew: if a packet is received N packets later than expected (based
424 * on packet serial numbers), then we define it to have a skew of N.
425 * The maximum skew values allow us to decide when a packet hasn't
426 * been received yet because it is out-of-order, as opposed to when it
427 * is likely to have been dropped. */
428 afs_uint32 inPacketSkew; /* Maximum skew on incoming packets */
429 afs_uint32 outPacketSkew; /* Peer-reported max skew on our sent packets */
430 int rateFlag; /* Flag for rate testing (-no 0yes +decrement) */
432 /* the "natural" MTU, excluding IP,UDP headers, is negotiated by the endpoints */
435 /* negotiated maximum number of packets to send in a single datagram. */
436 u_short maxDgramPackets;
437 /* local maximum number of packets to send in a single datagram. */
438 u_short ifDgramPackets;
440 * MTU, cwind, and nDgramPackets are used to initialize
441 * slow start parameters for new calls. These values are set whenever a
442 * call sends a retransmission and at the end of each call.
443 * congestSeq is incremented each time the congestion parameters are
444 * changed by a call recovering from a dropped packet. A call used
445 * MAX when updating congestion parameters if it started with the
446 * current congestion sequence number, otherwise it uses MIN.
448 u_short MTU; /* MTU for AFS 3.4a jumboGrams */
449 u_short cwind; /* congestion window */
450 u_short nDgramPackets; /* number packets per AFS 3.5 jumbogram */
451 u_short congestSeq; /* Changed when a call retransmits */
452 afs_hyper_t bytesSent; /* Number of bytes sent to this peer */
453 afs_hyper_t bytesReceived; /* Number of bytes received from this peer */
454 struct rx_queue rpcStats; /* rpc statistic list */
455 int lastReachTime; /* Last time we verified reachability */
458 /* A connection is an authenticated communication path, allowing
459 limited multiple asynchronous conversations. */
461 struct rx_connection_rx_lock {
462 struct rx_connection_rx_lock *next; /* on hash chain _or_ free list */
463 struct rx_peer_rx_lock *peer;
465 struct rx_connection {
466 struct rx_connection *next; /* on hash chain _or_ free list */
467 struct rx_peer *peer;
469 #ifdef RX_ENABLE_LOCKS
470 afs_kmutex_t conn_call_lock; /* locks conn_call_cv */
471 afs_kcondvar_t conn_call_cv;
472 afs_kmutex_t conn_data_lock; /* locks packet data */
474 afs_uint32 epoch; /* Process start time of client side of connection */
475 afs_uint32 cid; /* Connection id (call channel is bottom bits) */
476 afs_int32 error; /* If this connection is in error, this is it */
478 struct rx_call_rx_lock *call[RX_MAXCALLS];
480 struct rx_call *call[RX_MAXCALLS];
482 afs_uint32 callNumber[RX_MAXCALLS]; /* Current call numbers */
483 afs_uint32 serial; /* Next outgoing packet serial number */
484 afs_uint32 lastSerial; /* # of last packet received, for computing skew */
485 afs_int32 maxSerial; /* largest serial number seen on incoming packets */
486 /* afs_int32 maxPacketSize; max packet size should be per-connection since */
487 /* peer process could be restarted on us. Includes RX Header. */
488 struct rxevent *challengeEvent; /* Scheduled when the server is challenging a */
489 struct rxevent *delayedAbortEvent; /* Scheduled to throttle looping client */
490 struct rxevent *checkReachEvent; /* Scheduled when checking reachability */
491 int abortCount; /* count of abort messages sent */
492 /* client-- to retransmit the challenge */
493 struct rx_service *service; /* used by servers only */
494 u_short serviceId; /* To stamp on requests (clients only) */
495 u_short refCount; /* Reference count */
496 u_char flags; /* Defined below */
497 u_char type; /* Type of connection, defined below */
498 u_char secondsUntilPing; /* how often to ping for each active call */
499 u_char securityIndex; /* corresponds to the security class of the */
500 /* securityObject for this conn */
501 struct rx_securityClass *securityObject; /* Security object for this connection */
502 VOID *securityData; /* Private data for this conn's security class */
503 u_short securityHeaderSize; /* Length of security module's packet header data */
504 u_short securityMaxTrailerSize; /* Length of security module's packet trailer data */
506 int timeout; /* Overall timeout per call (seconds) for this conn */
507 int lastSendTime; /* Last send time for this connection */
508 u_short secondsUntilDead; /* Maximum silence from peer before RX_CALL_DEAD */
509 u_short hardDeadTime; /* hard max for call execution */
510 u_char ackRate; /* how many packets between ack requests */
511 u_char makeCallWaiters; /* how many rx_NewCalls are waiting */
512 int nSpecific; /* number entries in specific data */
513 void **specific; /* pointer to connection specific data */
516 #ifndef KDUMP_RX_LOCK
517 /* Flag bits for connection structure */
518 #define RX_CONN_MAKECALL_WAITING 1 /* rx_MakeCall is waiting for a channel */
519 #define RX_CONN_DESTROY_ME 2 /* Destroy *client* connection after last call */
520 #define RX_CONN_USING_PACKET_CKSUM 4 /* non-zero header.spare field seen */
521 #define RX_CONN_KNOW_WINDOW 8 /* window size negotiation works */
522 #define RX_CONN_RESET 16 /* connection is reset, remove */
523 #define RX_CONN_BUSY 32 /* connection is busy; don't delete */
524 #define RX_CONN_ATTACHWAIT 64 /* attach waiting for peer->lastReach */
526 /* Type of connection, client or server */
527 #define RX_CLIENT_CONNECTION 0
528 #define RX_SERVER_CONNECTION 1
529 #endif /* !KDUMP_RX_LOCK */
531 /* Call structure: only instantiated for active calls and dallying server calls. The permanent call state (i.e. the call number as well as state shared with other calls associated with this connection) is maintained in the connection structure. */
533 struct rx_call_rx_lock {
537 struct rx_queue queue_item_header; /* Call can be on various queues (one-at-a-time) */
538 struct rx_queue tq; /* Transmit packet queue */
539 struct rx_queue rq; /* Receive packet queue */
541 * The following fields are accessed while the call is unlocked.
542 * These fields are used by the caller/server thread to marshall
543 * and unmarshall RPC data. The only time they may be changed by
544 * other threads is when the RX_CALL_IOVEC_WAIT flag is set.
546 * NOTE: Be sure that these fields start and end on a double
547 * word boundary. Otherwise threads that are changing
548 * adjacent fields will cause problems.
550 struct rx_queue iovq; /* readv/writev packet queue */
551 u_short nLeft; /* Number bytes left in first receive packet */
552 u_short curvec; /* current iovec in currentPacket */
553 u_short curlen; /* bytes remaining in curvec */
554 u_short nFree; /* Number bytes free in last send packet */
555 struct rx_packet *currentPacket;/* Current packet being assembled or being read */
556 char *curpos; /* current position in curvec */
558 * End of fields accessed with call unlocked
560 u_char channel; /* Index of call, within connection */
561 u_char state; /* Current call state as defined below */
562 u_char mode; /* Current mode of a call in ACTIVE state */
563 #ifdef RX_ENABLE_LOCKS
564 afs_kmutex_t lock; /* lock covers data as well as mutexes. */
565 afs_kmutex_t *call_queue_lock; /* points to lock for queue we're on,
567 afs_kcondvar_t cv_twind;
568 afs_kcondvar_t cv_rq;
569 afs_kcondvar_t cv_tq;
572 struct rx_connection_rx_lock *conn; /* Parent connection for call */
574 struct rx_connection *conn; /* Parent connection for this call */
576 afs_uint32 *callNumber; /* Pointer to call number field within connection */
577 afs_uint32 flags; /* Some random flags */
578 u_char localStatus; /* Local user status sent out of band */
579 u_char remoteStatus; /* Remote user status received out of band */
580 afs_int32 error; /* Error condition for this call */
581 afs_uint32 timeout; /* High level timeout for this call */
582 afs_uint32 rnext; /* Next sequence number expected to be read by rx_ReadData */
583 afs_uint32 rprev; /* Previous packet received; used for deciding what the next packet to be received should be, in order to decide whether a negative acknowledge should be sent */
584 afs_uint32 rwind; /* The receive window: the peer must not send packets with sequence numbers >= rnext+rwind */
585 afs_uint32 tfirst; /* First unacknowledged transmit packet number */
586 afs_uint32 tnext; /* Next transmit sequence number to use */
587 u_short twind; /* The transmit window: we cannot assign a sequence number to a packet >= tfirst + twind */
588 u_short cwind; /* The congestion window */
589 u_short nSoftAcked; /* Number soft acked transmit packets */
590 u_short nextCwind; /* The congestion window after recovery */
591 u_short nCwindAcks; /* Number acks received at current cwind */
592 u_short ssthresh; /* The slow start threshold */
593 u_short nDgramPackets; /* Packets per AFS 3.5 jumbogram */
594 u_short nAcks; /* The number of consecttive acks */
595 u_short nNacks; /* Number packets acked that follow the
596 * first negatively acked packet */
597 u_short nSoftAcks; /* The number of delayed soft acks */
598 u_short nHardAcks; /* The number of delayed hard acks */
599 u_short congestSeq; /* Peer's congestion sequence counter */
600 struct rxevent *resendEvent; /* If this is non-Null, there is a retransmission event pending */
601 struct rxevent *timeoutEvent; /* If this is non-Null, then there is an overall timeout for this call */
602 struct rxevent *keepAliveEvent; /* Scheduled periodically in active calls to keep call alive */
603 struct rxevent *delayedAckEvent; /* Scheduled after all packets are received to send an ack if a reply or new call is not generated soon */
604 struct rxevent *delayedAbortEvent; /* Scheduled to throttle looping client */
605 int abortCode; /* error code from last RPC */
606 int abortCount; /* number of times last error was sent */
607 u_int lastSendTime; /* Last time a packet was sent on this call */
608 u_int lastReceiveTime; /* Last time a packet was received for this call */
609 VOID (*arrivalProc)(); /* Procedure to call when reply is received */
610 VOID *arrivalProcHandle; /* Handle to pass to replyFunc */
611 VOID *arrivalProcArg; /* Additional arg to pass to reply Proc */
612 afs_uint32 lastAcked; /* last packet "hard" acked by receiver */
613 afs_uint32 startWait; /* time server began waiting for input data/send quota */
614 struct clock traceWait; /* time server began waiting for input data/send quota */
615 struct clock traceStart; /* time the call started running */
616 u_short MTU; /* size of packets currently sending */
617 #ifdef RX_ENABLE_LOCKS
618 short refCount; /* Used to keep calls from disappearring
619 when we get them from a queue. */
620 #endif /* RX_ENABLE_LOCKS */
621 /* Call refcount modifiers */
622 #define RX_CALL_REFCOUNT_BEGIN 0 /* GetCall/NewCall/EndCall */
623 #define RX_CALL_REFCOUNT_RESEND 1 /* resend event */
624 #define RX_CALL_REFCOUNT_DELAY 2 /* delayed ack */
625 #define RX_CALL_REFCOUNT_ALIVE 3 /* keep alive event */
626 #define RX_CALL_REFCOUNT_PACKET 4 /* waiting for packets. */
627 #define RX_CALL_REFCOUNT_SEND 5 /* rxi_Send */
628 #define RX_CALL_REFCOUNT_ACKALL 6 /* rxi_AckAll */
629 #define RX_CALL_REFCOUNT_ABORT 7 /* delayed abort */
630 #define RX_CALL_REFCOUNT_MAX 8 /* array size. */
631 #ifdef RX_REFCOUNT_CHECK
632 short refCDebug[RX_CALL_REFCOUNT_MAX];
633 #endif /* RX_REFCOUNT_CHECK */
634 int iovNBytes; /* byte count for current iovec */
635 int iovMax; /* number elements in current iovec */
636 int iovNext; /* next entry in current iovec */
637 struct iovec *iov; /* current iovec */
638 struct clock queueTime; /* time call was queued */
639 struct clock startTime; /* time call was started */
640 afs_hyper_t bytesSent; /* Number bytes sent */
641 afs_hyper_t bytesRcvd; /* Number bytes received */
644 #ifndef KDUMP_RX_LOCK
645 /* Major call states */
646 #define RX_STATE_NOTINIT 0 /* Call structure has never been initialized */
647 #define RX_STATE_PRECALL 1 /* Server-only: call is not in progress, but packets have arrived */
648 #define RX_STATE_ACTIVE 2 /* An active call; a process is dealing with this call */
649 #define RX_STATE_DALLY 3 /* Dallying after process is done with call */
650 #define RX_STATE_HOLD 4 /* Waiting for acks on reply data packets */
652 /* Call modes: the modes of a call in RX_STATE_ACTIVE state (process attached) */
653 #define RX_MODE_SENDING 1 /* Sending or ready to send */
654 #define RX_MODE_RECEIVING 2 /* Receiving or ready to receive */
655 #define RX_MODE_ERROR 3 /* Something in error for current conversation */
656 #define RX_MODE_EOF 4 /* Server has flushed (or client has read) last reply packet */
659 #define RX_CALL_READER_WAIT 1 /* Reader is waiting for next packet */
660 #define RX_CALL_WAIT_WINDOW_ALLOC 2 /* Sender is waiting for window to allocate buffers */
661 #define RX_CALL_WAIT_WINDOW_SEND 4 /* Sender is waiting for window to send buffers */
662 #define RX_CALL_WAIT_PACKETS 8 /* Sender is waiting for packet buffers */
663 #define RX_CALL_WAIT_PROC 16 /* Waiting for a process to be assigned */
664 #define RX_CALL_RECEIVE_DONE 32 /* All packets received on this call */
665 #define RX_CALL_CLEARED 64 /* Receive queue cleared in precall state */
666 #define RX_CALL_TQ_BUSY 128 /* Call's Xmit Queue is busy; don't modify */
667 #define RX_CALL_TQ_CLEARME 256 /* Need to clear this call's TQ later */
668 #define RX_CALL_TQ_SOME_ACKED 512 /* rxi_Start needs to discard ack'd packets. */
669 #define RX_CALL_TQ_WAIT 1024 /* Reader is waiting for TQ_BUSY to be reset */
670 #define RX_CALL_FAST_RECOVER 2048 /* call is doing congestion recovery */
671 #define RX_CALL_FAST_RECOVER_WAIT 4096 /* thread is waiting to start recovery */
672 #define RX_CALL_SLOW_START_OK 8192 /* receiver acks every other packet */
673 #define RX_CALL_IOVEC_WAIT 16384 /* waiting thread is using an iovec */
674 #define RX_CALL_HAVE_LAST 32768 /* Last packet has been received */
675 #define RX_CALL_NEED_START 0x10000 /* tells rxi_Start to start again */
677 /* Maximum number of acknowledgements in an acknowledge packet */
678 #define RX_MAXACKS 255
680 /* The structure of the data portion of an acknowledge packet: An acknowledge
681 * packet is in network byte order at all times. An acknowledgement is always
682 * prompted for a specific reason by a specific incoming packet. This reason
683 * is reported in "reason" and the packet's sequence number in the packet
684 * header.seq. In addition to this information, all of the current
685 * acknowledgement information about this call is placed in the packet.
686 * "FirstPacket" is the sequence number of the first packet represented in an
687 * array of bytes, "acks", containing acknowledgement information for a number
688 * of consecutive packets. All packets prior to FirstPacket are implicitly
689 * acknowledged: the sender need no longer be concerned about them. Packets
690 * from firstPacket+nAcks and on are not acknowledged. Packets in the range
691 * [firstPacket,firstPacket+nAcks) are each acknowledged explicitly. The
692 * acknowledgement may be RX_NACK if the packet is not (currently) at the
693 * receiver (it may have never been received, or received and then later
694 * dropped), or it may be RX_ACK if the packet is queued up waiting to be read
695 * by the upper level software. RX_ACK does not imply that the packet may not
696 * be dropped before it is read; it does imply that the sender should stop
697 * retransmitting the packet until notified otherwise. The field
698 * previousPacket identifies the previous packet received by the peer. This
699 * was used in a previous version of this software, and could be used in the
700 * future. The serial number in the data part of the ack packet corresponds to
701 * the serial number oof the packet which prompted the acknowledge. Any
702 * packets which are explicitly not acknowledged, and which were last
703 * transmitted with a serial number less than the provided serial number,
704 * should be retransmitted immediately. Actually, this is slightly inaccurate:
705 * packets are not necessarily received in order. When packets are habitually
706 * transmitted out of order, this is allowed for in the retransmission
707 * algorithm by introducing the notion of maximum packet skew: the degree of
708 * out-of-orderness of the packets received on the wire. This number is
709 * communicated from the receiver to the sender in ack packets. */
711 struct rx_ackPacket {
712 u_short bufferSpace; /* Number of packet buffers available. That is: the number of buffers that the sender of the ack packet is willing to provide for data, on this or subsequent calls. Lying is permissable. */
713 u_short maxSkew; /* Maximum difference between serial# of packet acknowledged and highest packet yet received */
714 afs_uint32 firstPacket; /* The first packet in the list of acknowledged packets */
715 afs_uint32 previousPacket; /* The previous packet number received (obsolete?) */
716 afs_uint32 serial; /* Serial number of the packet which prompted the acknowledge */
717 u_char reason; /* Reason for the acknowledge of ackPacket, defined below */
718 u_char nAcks; /* Number of acknowledgements */
719 u_char acks[RX_MAXACKS]; /* Up to RX_MAXACKS packet acknowledgements, defined below */
720 /* Packets <firstPacket are implicitly acknowledged and may be discarded by the sender. Packets >= firstPacket+nAcks are implicitly NOT acknowledged. No packets with sequence numbers >= firstPacket should be discarded by the sender (they may thrown out at any time by the receiver) */
723 #define FIRSTACKOFFSET 4
725 /* Reason for acknowledge message */
726 #define RX_ACK_REQUESTED 1 /* Peer requested an ack on this packet */
727 #define RX_ACK_DUPLICATE 2 /* Duplicate packet */
728 #define RX_ACK_OUT_OF_SEQUENCE 3 /* Packet out of sequence */
729 #define RX_ACK_EXCEEDS_WINDOW 4 /* Packet sequence number higher than window; discarded */
730 #define RX_ACK_NOSPACE 5 /* No buffer space at all */
731 #define RX_ACK_PING 6 /* This is a keep-alive ack */
732 #define RX_ACK_PING_RESPONSE 7 /* Ack'ing because we were pinged */
733 #define RX_ACK_DELAY 8 /* Ack generated since nothing has happened since receiving packet */
734 #define RX_ACK_IDLE 9 /* Similar to RX_ACK_DELAY, but can
737 /* Packet acknowledgement type */
738 #define RX_ACK_TYPE_NACK 0 /* I Don't have this packet */
739 #define RX_ACK_TYPE_ACK 1 /* I have this packet, although I may discard it later */
741 /* The packet size transmitted for an acknowledge is adjusted to reflect the actual size of the acks array. This macro defines the size */
742 #define rx_AckDataSize(nAcks) (3 + nAcks + offsetof(struct rx_ackPacket, acks[0]))
744 #define RX_CHALLENGE_TIMEOUT 2 /* Number of seconds before another authentication request packet is generated */
745 #define RX_CHALLENGE_MAXTRIES 50 /* Max # of times we resend challenge */
746 #define RX_CHECKREACH_TIMEOUT 2 /* Number of seconds before another ping is generated */
747 #define RX_CHECKREACH_TTL 60 /* Re-check reachability this often */
749 /* RX error codes. RX uses error codes from -1 to -64. Rxgen may use other error codes < -64; user programs are expected to return positive error codes */
751 /* Something bad happened to the connection; temporary loss of communication */
752 #define RX_CALL_DEAD (-1)
754 /* An invalid operation, such as a client attempting to send data after having received the beginning of a reply from the server */
755 #define RX_INVALID_OPERATION (-2)
757 /* An optional timeout per call may be specified */
758 #define RX_CALL_TIMEOUT (-3)
760 /* End of data on a read */
763 /* Some sort of low-level protocol error */
764 #define RX_PROTOCOL_ERROR (-5)
766 /* Generic user abort code; used when no more specific error code needs to be communicated. For example, multi rx clients use this code to abort a multi rx call */
767 #define RX_USER_ABORT (-6)
769 /* Port already in use (from rx_Init) */
770 #define RX_ADDRINUSE (-7)
772 /* EMSGSIZE returned from network. Packet too big, must fragment */
773 #define RX_MSGSIZE (-8)
775 /* transient failure detected ( possibly the server is restarting ) */
776 /* this shud be equal to VRESTARTING ( util/errors.h ) for old clients to work */
777 #define RX_RESTARTING (-100)
779 /* Structure for keeping rx statistics. Note that this structure is returned
780 * by rxdebug, so, for compatibility reasons, new fields should be appended (or
781 * spares used), the rxdebug protocol checked, if necessary, and the PrintStats
782 * code should be updated as well.
784 * Clearly we assume that ntohl will work on these structures so sizeof(int)
785 * must equal sizeof(afs_int32). */
787 struct rx_stats { /* General rx statistics */
788 int packetRequests; /* Number of packet allocation requests */
789 int receivePktAllocFailures;
790 int sendPktAllocFailures;
791 int specialPktAllocFailures;
792 int socketGreedy; /* Whether SO_GREEDY succeeded */
793 int bogusPacketOnRead; /* Number of inappropriately short packets received */
794 int bogusHost; /* Host address from bogus packets */
795 int noPacketOnRead; /* Number of read packets attempted when there was actually no packet to read off the wire */
796 int noPacketBuffersOnRead; /* Number of dropped data packets due to lack of packet buffers */
797 int selects; /* Number of selects waiting for packet or timeout */
798 int sendSelects; /* Number of selects forced when sending packet */
799 int packetsRead[RX_N_PACKET_TYPES]; /* Total number of packets read, per type */
800 int dataPacketsRead; /* Number of unique data packets read off the wire */
801 int ackPacketsRead; /* Number of ack packets read */
802 int dupPacketsRead; /* Number of duplicate data packets read */
803 int spuriousPacketsRead;/* Number of inappropriate data packets */
804 int packetsSent[RX_N_PACKET_TYPES]; /* Number of rxi_Sends: packets sent over the wire, per type */
805 int ackPacketsSent; /* Number of acks sent */
806 int pingPacketsSent; /* Total number of ping packets sent */
807 int abortPacketsSent; /* Total number of aborts */
808 int busyPacketsSent; /* Total number of busies sent received */
809 int dataPacketsSent; /* Number of unique data packets sent */
810 int dataPacketsReSent; /* Number of retransmissions */
811 int dataPacketsPushed; /* Number of retransmissions pushed early by a NACK */
812 int ignoreAckedPacket; /* Number of packets with acked flag, on rxi_Start */
813 struct clock totalRtt; /* Total round trip time measured (use to compute average) */
814 struct clock minRtt; /* Minimum round trip time measured */
815 struct clock maxRtt; /* Maximum round trip time measured */
816 int nRttSamples; /* Total number of round trip samples */
817 int nServerConns; /* Total number of server connections */
818 int nClientConns; /* Total number of client connections */
819 int nPeerStructs; /* Total number of peer structures */
820 int nCallStructs; /* Total number of call structures allocated */
821 int nFreeCallStructs; /* Total number of previously allocated free call structures */
823 afs_int32 fatalErrors;
824 int ignorePacketDally; /* packets dropped because call is in dally state */
825 int receiveCbufPktAllocFailures;
826 int sendCbufPktAllocFailures;
830 /* structures for debug input and output packets */
832 /* debug input types */
838 /* Invalid rx debug package type */
839 #define RX_DEBUGI_BADTYPE (-8)
841 #define RX_DEBUGI_VERSION_MINIMUM ('L') /* earliest real version */
842 #define RX_DEBUGI_VERSION ('Q') /* Latest version */
843 /* first version w/ secStats */
844 #define RX_DEBUGI_VERSION_W_SECSTATS ('L')
845 /* version M is first supporting GETALLCONN and RXSTATS type */
846 #define RX_DEBUGI_VERSION_W_GETALLCONN ('M')
847 #define RX_DEBUGI_VERSION_W_RXSTATS ('M')
848 /* last version with unaligned debugConn */
849 #define RX_DEBUGI_VERSION_W_UNALIGNED_CONN ('L')
850 #define RX_DEBUGI_VERSION_W_WAITERS ('N')
851 #define RX_DEBUGI_VERSION_W_IDLETHREADS ('O')
852 #define RX_DEBUGI_VERSION_W_NEWPACKETTYPES ('P')
853 #define RX_DEBUGI_VERSION_W_GETPEER ('Q')
855 #define RX_DEBUGI_GETSTATS 1 /* get basic rx stats */
856 #define RX_DEBUGI_GETCONN 2 /* get connection info */
857 #define RX_DEBUGI_GETALLCONN 3 /* get even uninteresting conns */
858 #define RX_DEBUGI_RXSTATS 4 /* get all rx stats */
859 #define RX_DEBUGI_GETPEER 5 /* get all peer structs */
861 struct rx_debugStats {
862 afs_int32 nFreePackets;
863 afs_int32 packetReclaims;
864 afs_int32 callsExecuted;
865 char waitingForPackets;
870 afs_int32 idleThreads; /* Number of server threads that are idle */
874 struct rx_debugConn_vL {
878 afs_int32 callNumber[RX_MAXCALLS];
884 char callState[RX_MAXCALLS];
885 char callMode[RX_MAXCALLS];
886 char callFlags[RX_MAXCALLS];
887 char callOther[RX_MAXCALLS];
888 /* old style getconn stops here */
889 struct rx_securityObjectStats secStats;
890 afs_int32 sparel[10];
893 struct rx_debugConn {
897 afs_int32 callNumber[RX_MAXCALLS];
903 char sparec[3]; /* force correct alignment */
904 char callState[RX_MAXCALLS];
905 char callMode[RX_MAXCALLS];
906 char callFlags[RX_MAXCALLS];
907 char callOther[RX_MAXCALLS];
908 /* old style getconn stops here */
909 struct rx_securityObjectStats secStats;
915 struct rx_debugPeer {
923 struct clock burstWait;
926 struct clock timeout;
929 afs_int32 inPacketSkew;
930 afs_int32 outPacketSkew;
934 u_short maxDgramPackets;
935 u_short ifDgramPackets;
938 u_short nDgramPackets;
940 afs_hyper_t bytesSent;
941 afs_hyper_t bytesReceived;
942 afs_int32 sparel[10];
945 #define RX_OTHER_IN 1 /* packets avail in in queue */
946 #define RX_OTHER_OUT 2 /* packets avail in out queue */
950 /* Only include this once, even when re-loading for kdump. */
951 #ifndef _CALL_REF_DEFINED_
952 #define _CALL_REF_DEFINED_
954 #ifdef RX_ENABLE_LOCKS
955 #ifdef RX_REFCOUNT_CHECK
956 /* RX_REFCOUNT_CHECK is used to test for call refcount leaks by event
959 extern int rx_callHoldType;
960 #define CALL_HOLD(call, type) do { \
962 call->refCDebug[type]++; \
963 if (call->refCDebug[type] > 50) {\
964 rx_callHoldType = type; \
965 osi_Panic("Huge call refCount"); \
968 #define CALL_RELE(call, type) do { \
970 call->refCDebug[type]--; \
971 if (call->refCDebug[type] > 50) {\
972 rx_callHoldType = type; \
973 osi_Panic("Negative call refCount"); \
976 #else /* RX_REFCOUNT_CHECK */
977 #define CALL_HOLD(call, type) call->refCount++
978 #define CALL_RELE(call, type) call->refCount--
979 #endif /* RX_REFCOUNT_CHECK */
981 #else /* RX_ENABLE_LOCKS */
982 #define CALL_HOLD(call, type)
983 #define CALL_RELE(call, type)
984 #endif /* RX_ENABLE_LOCKS */
986 #endif /* _CALL_REF_DEFINED_ */
988 struct rx_connection *rx_GetCachedConnection(
989 unsigned int remoteAddr,
991 unsigned short service,
992 struct rx_securityClass *securityObject,
996 void rx_ReleaseCachedConnection(
997 struct rx_connection *conn
1000 #define RX_SERVER_DEBUG_SEC_STATS 0x1
1001 #define RX_SERVER_DEBUG_ALL_CONN 0x2
1002 #define RX_SERVER_DEBUG_RX_STATS 0x4
1003 #define RX_SERVER_DEBUG_WAITER_CNT 0x8
1004 #define RX_SERVER_DEBUG_IDLE_THREADS 0x10
1005 #define RX_SERVER_DEBUG_OLD_CONN 0x20
1006 #define RX_SERVER_DEBUG_NEW_PACKETS 0x40
1007 #define RX_SERVER_DEBUG_ALL_PEER 0x80
1009 afs_int32 rx_GetServerDebug(
1011 afs_uint32 remoteAddr,
1012 afs_uint16 remotePort,
1013 struct rx_debugStats *stat,
1014 afs_uint32 *supportedValues
1017 afs_int32 rx_GetServerStats(
1019 afs_uint32 remoteAddr,
1020 afs_uint16 remotePort,
1021 struct rx_stats *stat,
1022 afs_uint32 *supportedValues
1025 afs_int32 rx_GetServerVersion(
1027 afs_uint32 remoteAddr,
1028 afs_uint16 remotePort,
1029 size_t version_length,
1033 afs_int32 rx_GetServerConnections(
1035 afs_uint32 remoteAddr,
1036 afs_uint16 remotePort,
1037 afs_int32 *nextConnection,
1039 afs_uint32 debugSupportedValues,
1040 struct rx_debugConn *conn,
1041 afs_uint32 *supportedValues
1044 afs_int32 rx_GetServerPeers(
1046 afs_uint32 remoteAddr,
1047 afs_uint16 remotePort,
1048 afs_int32 *nextPeer,
1049 afs_uint32 debugSupportedValues,
1050 struct rx_debugPeer *peer,
1051 afs_uint32 *supportedValues
1054 #define AFS_RX_STATS_CLEAR_ALL 0xffffffff
1055 #define AFS_RX_STATS_CLEAR_INVOCATIONS 0x1
1056 #define AFS_RX_STATS_CLEAR_BYTES_SENT 0x2
1057 #define AFS_RX_STATS_CLEAR_BYTES_RCVD 0x4
1058 #define AFS_RX_STATS_CLEAR_QUEUE_TIME_SUM 0x8
1059 #define AFS_RX_STATS_CLEAR_QUEUE_TIME_SQUARE 0x10
1060 #define AFS_RX_STATS_CLEAR_QUEUE_TIME_MIN 0x20
1061 #define AFS_RX_STATS_CLEAR_QUEUE_TIME_MAX 0x40
1062 #define AFS_RX_STATS_CLEAR_EXEC_TIME_SUM 0x80
1063 #define AFS_RX_STATS_CLEAR_EXEC_TIME_SQUARE 0x100
1064 #define AFS_RX_STATS_CLEAR_EXEC_TIME_MIN 0x200
1065 #define AFS_RX_STATS_CLEAR_EXEC_TIME_MAX 0x400
1067 typedef struct rx_function_entry_v1 {
1068 afs_uint32 remote_peer;
1069 afs_uint32 remote_port;
1070 afs_uint32 remote_is_server;
1071 afs_uint32 interfaceId;
1072 afs_uint32 func_total;
1073 afs_uint32 func_index;
1074 afs_hyper_t invocations;
1075 afs_hyper_t bytes_sent;
1076 afs_hyper_t bytes_rcvd;
1077 struct clock queue_time_sum;
1078 struct clock queue_time_sum_sqr;
1079 struct clock queue_time_min;
1080 struct clock queue_time_max;
1081 struct clock execution_time_sum;
1082 struct clock execution_time_sum_sqr;
1083 struct clock execution_time_min;
1084 struct clock execution_time_max;
1085 } rx_function_entry_v1_t, *rx_function_entry_v1_p;
1088 * If you need to change rx_function_entry, you should probably create a brand
1089 * new structure. Keeping the old structure will allow backwards compatibility
1090 * with old clients (even if it is only used to calculate allocation size).
1091 * If you do change the size or the format, you'll need to bump
1092 * RX_STATS_RETRIEVAL_VERSION. This allows some primitive form
1093 * of versioning a la rxdebug.
1096 #define RX_STATS_RETRIEVAL_VERSION 1 /* latest version */
1097 #define RX_STATS_RETRIEVAL_FIRST_EDITION 1 /* first implementation */
1099 typedef struct rx_interface_stat {
1100 struct rx_queue queue_header;
1101 struct rx_queue all_peers;
1102 rx_function_entry_v1_t stats[1]; /* make sure this is aligned correctly */
1103 } rx_interface_stat_t, *rx_interface_stat_p;
1105 void rx_IncrementTimeAndCount(
1106 struct rx_peer *peer,
1107 afs_uint32 rxInterface,
1108 afs_uint32 currentFunc,
1109 afs_uint32 totalFunc,
1110 struct clock *queueTime,
1111 struct clock *execTime,
1112 afs_hyper_t *bytesSent,
1113 afs_hyper_t *bytesRcvd,
1117 int rx_RetrieveProcessRPCStats(
1118 afs_uint32 callerVersion,
1119 afs_uint32 *myVersion,
1120 afs_uint32 *clock_sec,
1121 afs_uint32 *clock_usec,
1123 afs_uint32 *statCount,
1127 int rx_RetrievePeerRPCStats(
1128 afs_uint32 callerVersion,
1129 afs_uint32 *myVersion,
1130 afs_uint32 *clock_sec,
1131 afs_uint32 *clock_usec,
1133 afs_uint32 *statCount,
1137 void rx_FreeRPCStats(
1142 int rx_queryProcessRPCStats();
1144 int rx_queryPeerRPCStats();
1146 void rx_enableProcessRPCStats();
1148 void rx_enablePeerRPCStats();
1150 void rx_disableProcessRPCStats();
1152 void rx_disablePeerRPCStats();
1154 void rx_clearProcessRPCStats(
1155 afs_uint32 clearFlag
1158 void rx_clearPeerRPCStats(
1159 afs_uint32 clearFlag
1162 void rx_SetRxStatUserOk(
1163 int (*proc)(struct rx_call *call)
1166 int rx_RxStatUserOk(
1167 struct rx_call *call
1171 #define RX_STATS_SERVICE_ID 409
1173 #endif /* _RX_ End of rx.h */
1175 #endif /* !KDUMP_RX_LOCK */