1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #if defined(__linux__)
27 #include <linux/lustre_net.h>
28 #elif defined(__APPLE__)
29 #include <darwin/lustre_net.h>
30 #elif defined(__WINNT__)
31 #include <winnt/lustre_net.h>
33 #error Unsupported operating system.
36 #include <libcfs/kp30.h>
38 #include <lnet/lnet.h>
39 #include <lustre/lustre_idl.h>
40 #include <lustre_ha.h>
41 #include <lustre_import.h>
42 #include <lprocfs_status.h>
44 /* MD flags we _always_ use */
45 #define PTLRPC_MD_OPTIONS 0
47 /* Define maxima for bulk I/O
48 * CAVEAT EMPTOR, with multinet (i.e. routers forwarding between networks)
49 * these limits are system wide and not interface-local. */
50 #define PTLRPC_MAX_BRW_BITS LNET_MTU_BITS
51 #define PTLRPC_MAX_BRW_SIZE (1<<LNET_MTU_BITS)
52 #define PTLRPC_MAX_BRW_PAGES (PTLRPC_MAX_BRW_SIZE >> CFS_PAGE_SHIFT)
54 /* When PAGE_SIZE is a constant, we can check our arithmetic here with cpp! */
56 # if ((PTLRPC_MAX_BRW_PAGES & (PTLRPC_MAX_BRW_PAGES - 1)) != 0)
57 # error "PTLRPC_MAX_BRW_PAGES isn't a power of two"
59 # if (PTLRPC_MAX_BRW_SIZE != (PTLRPC_MAX_BRW_PAGES * CFS_PAGE_SIZE))
60 # error "PTLRPC_MAX_BRW_SIZE isn't PTLRPC_MAX_BRW_PAGES * CFS_PAGE_SIZE"
62 # if (PTLRPC_MAX_BRW_SIZE > LNET_MTU)
63 # error "PTLRPC_MAX_BRW_SIZE too big"
65 # if (PTLRPC_MAX_BRW_PAGES > LNET_MAX_IOV)
66 # error "PTLRPC_MAX_BRW_PAGES too big"
68 #endif /* __KERNEL__ */
70 /* Size over which to OBD_VMALLOC() rather than OBD_ALLOC() service request
72 #define SVC_BUF_VMALLOC_THRESHOLD (2 * CFS_PAGE_SIZE)
74 /* The following constants determine how memory is used to buffer incoming
77 * ?_NBUFS # buffers to allocate when growing the pool
78 * ?_BUFSIZE # bytes in a single request buffer
79 * ?_MAXREQSIZE # maximum request service will receive
81 * When fewer than ?_NBUFS/2 buffers are posted for receive, another chunk
82 * of ?_NBUFS is added to the pool.
84 * Messages larger than ?_MAXREQSIZE are dropped. Request buffers are
85 * considered full when less than ?_MAXREQSIZE is left in them.
88 #define LDLM_THREADS_AUTO_MIN min((int)(smp_num_cpus * smp_num_cpus * 2), 8)
89 #define LDLM_THREADS_AUTO_MAX (LDLM_THREADS_AUTO_MIN * 16)
90 #define LDLM_BL_THREADS LDLM_THREADS_AUTO_MIN
91 #define LDLM_NBUFS (64 * smp_num_cpus)
92 #define LDLM_BUFSIZE (8 * 1024)
93 #define LDLM_MAXREQSIZE (5 * 1024)
94 #define LDLM_MAXREPSIZE (1024)
97 #define MDS_THREADS_MIN 2
98 #define MDS_THREADS_MAX 512
99 #define MDS_THREADS_MIN_READPAGE 2
100 #define MDS_NBUFS (64 * smp_num_cpus)
101 #define MDS_BUFSIZE (8 * 1024)
102 /* Assume file name length = FNAME_MAX = 256 (true for ext3).
103 * path name length = PATH_MAX = 4096
104 * LOV MD size max = EA_MAX = 4000
105 * symlink: FNAME_MAX + PATH_MAX <- largest
106 * link: FNAME_MAX + PATH_MAX (mds_rec_link < mds_rec_create)
107 * rename: FNAME_MAX + FNAME_MAX
108 * open: FNAME_MAX + EA_MAX
110 * MDS_MAXREQSIZE ~= 4736 bytes =
111 * lustre_msg + ldlm_request + mds_body + mds_rec_create + FNAME_MAX + PATH_MAX
112 * MDS_MAXREPSIZE ~= 8300 bytes = lustre_msg + llog_header
113 * or, for mds_close() and mds_reint_unlink() on a many-OST filesystem:
114 * = 9210 bytes = lustre_msg + mds_body + 160 * (easize + cookiesize)
116 * Realistic size is about 512 bytes (20 character name + 128 char symlink),
117 * except in the open case where there are a large number of OSTs in a LOV.
119 #define MDS_MAXREQSIZE (5 * 1024)
120 #define MDS_MAXREPSIZE max(9 * 1024, 280 + LOV_MAX_STRIPE_COUNT * 56)
122 #define MGS_THREADS_AUTO_MIN 2
123 #define MGS_THREADS_AUTO_MAX 32
124 #define MGS_NBUFS (64 * smp_num_cpus)
125 #define MGS_BUFSIZE (8 * 1024)
126 #define MGS_MAXREQSIZE (8 * 1024)
127 #define MGS_MAXREPSIZE (9 * 1024)
129 /* Absolute limits */
130 #define OSS_THREADS_MIN 2
131 #define OSS_THREADS_MAX 512
132 #define OST_NBUFS (64 * smp_num_cpus)
133 #define OST_BUFSIZE (8 * 1024)
134 /* OST_MAXREQSIZE ~= 4768 bytes =
135 * lustre_msg + obdo + 16 * obd_ioobj + 256 * niobuf_remote
137 * - single object with 16 pages is 512 bytes
138 * - OST_MAXREQSIZE must be at least 1 page of cookies plus some spillover
140 #define OST_MAXREQSIZE (5 * 1024)
141 #define OST_MAXREPSIZE (9 * 1024)
143 struct ptlrpc_connection {
144 struct list_head c_link;
146 lnet_process_id_t c_peer;
147 struct obd_uuid c_remote_uuid;
151 struct ptlrpc_client {
152 __u32 cli_request_portal;
153 __u32 cli_reply_portal;
157 /* state flags of requests */
158 /* XXX only ones left are those used by the bulk descs as well! */
159 #define PTL_RPC_FL_INTR (1 << 0) /* reply wait was interrupted by user */
160 #define PTL_RPC_FL_TIMEOUT (1 << 7) /* request timed out waiting for reply */
162 #define REQ_MAX_ACK_LOCKS 8
164 union ptlrpc_async_args {
165 /* Scratchpad for passing args to completion interpreter. Users
166 * cast to the struct of their choosing, and LASSERT that this is
167 * big enough. For _tons_ of context, OBD_ALLOC a struct and store
168 * a pointer to it here. The pointer_arg ensures this struct is at
169 * least big enough for that. */
170 void *pointer_arg[9];
174 struct ptlrpc_request_set;
175 typedef int (*set_interpreter_func)(struct ptlrpc_request_set *, void *, int);
177 struct ptlrpc_request_set {
178 int set_remaining; /* # uncompleted requests */
179 cfs_waitq_t set_waitq;
180 cfs_waitq_t *set_wakeup_ptr;
181 struct list_head set_requests;
182 set_interpreter_func set_interpret; /* completion callback */
183 void *set_arg; /* completion context */
184 /* locked so that any old caller can communicate requests to
185 * the set holder who can then fold them into the lock-free set */
186 spinlock_t set_new_req_lock;
187 struct list_head set_new_requests;
190 struct ptlrpc_bulk_desc;
193 * ptlrpc callback & work item stuff
195 struct ptlrpc_cb_id {
196 void (*cbid_fn)(lnet_event_t *ev); /* specific callback fn */
197 void *cbid_arg; /* additional arg */
200 #define RS_MAX_LOCKS 4
203 struct ptlrpc_reply_state {
204 struct ptlrpc_cb_id rs_cb_id;
205 struct list_head rs_list;
206 struct list_head rs_exp_list;
207 struct list_head rs_obd_list;
209 struct list_head rs_debug_list;
211 /* updates to following flag serialised by srv_request_lock */
212 unsigned int rs_difficult:1; /* ACK/commit stuff */
213 unsigned int rs_scheduled:1; /* being handled? */
214 unsigned int rs_scheduled_ever:1;/* any schedule attempts? */
215 unsigned int rs_handled:1; /* been handled yet? */
216 unsigned int rs_on_net:1; /* reply_out_callback pending? */
217 unsigned int rs_prealloc:1; /* rs from prealloc list */
222 struct obd_export *rs_export;
223 struct ptlrpc_service *rs_service;
224 lnet_handle_md_t rs_md_h;
225 atomic_t rs_refcount;
227 /* locks awaiting client reply ACK */
229 struct lustre_handle rs_locks[RS_MAX_LOCKS];
230 ldlm_mode_t rs_modes[RS_MAX_LOCKS];
231 /* last member: variable sized reply message */
232 struct lustre_msg *rs_msg;
235 struct ptlrpc_thread;
238 RQ_PHASE_NEW = 0xebc0de00,
239 RQ_PHASE_RPC = 0xebc0de01,
240 RQ_PHASE_BULK = 0xebc0de02,
241 RQ_PHASE_INTERPRET = 0xebc0de03,
242 RQ_PHASE_COMPLETE = 0xebc0de04,
245 struct ptlrpc_request_pool {
247 struct list_head prp_req_list; /* list of ptlrpc_request structs */
249 void (*prp_populate)(struct ptlrpc_request_pool *, int);
252 struct ptlrpc_request {
253 int rq_type; /* one of PTL_RPC_MSG_* */
254 struct list_head rq_list;
255 struct list_head rq_history_list; /* server-side history */
256 __u64 rq_history_seq; /* history sequence # */
259 /* client-side flags */
260 unsigned int rq_intr:1, rq_replied:1, rq_err:1,
261 rq_timedout:1, rq_resend:1, rq_restart:1,
263 * when ->rq_replay is set, request is kept by the client even
264 * after server commits corresponding transaction. This is
265 * used for operations that require sequence of multiple
266 * requests to be replayed. The only example currently is file
267 * open/close. When last request in such a sequence is
268 * committed, ->rq_replay is cleared on all requests in the
272 rq_no_resend:1, rq_waiting:1, rq_receiving_reply:1,
273 rq_no_delay:1, rq_net_err:1;
274 enum rq_phase rq_phase; /* one of RQ_PHASE_* */
275 atomic_t rq_refcount; /* client-side refcount for SENT race */
277 struct ptlrpc_thread *rq_svc_thread; /* initial thread servicing req */
279 int rq_request_portal; /* XXX FIXME bug 249 */
280 int rq_reply_portal; /* XXX FIXME bug 249 */
282 int rq_nob_received; /* client-side # reply bytes actually received */
285 struct lustre_msg *rq_reqmsg;
287 int rq_timeout; /* time to wait for reply (seconds) */
289 struct lustre_msg *rq_repmsg;
292 struct list_head rq_replay_list;
294 __u32 rq_req_swab_mask;
295 __u32 rq_rep_swab_mask;
297 int rq_import_generation;
298 enum lustre_imp_state rq_send_state;
300 /* client+server request */
301 lnet_handle_md_t rq_req_md_h;
302 struct ptlrpc_cb_id rq_req_cbid;
305 struct timeval rq_arrival_time; /* request arrival time */
306 struct ptlrpc_reply_state *rq_reply_state; /* separated reply state */
307 struct ptlrpc_request_buffer_desc *rq_rqbd; /* incoming request buffer*/
309 __u32 rq_uid; /* peer uid, used in MDS only */
312 /* client-only incoming reply */
313 lnet_handle_md_t rq_reply_md_h;
314 cfs_waitq_t rq_reply_waitq;
315 struct ptlrpc_cb_id rq_reply_cbid;
318 lnet_process_id_t rq_peer;
319 struct obd_export *rq_export;
320 struct obd_import *rq_import;
322 void (*rq_replay_cb)(struct ptlrpc_request *);
323 void (*rq_commit_cb)(struct ptlrpc_request *);
326 struct ptlrpc_bulk_desc *rq_bulk; /* client side bulk */
327 time_t rq_sent; /* when request sent, seconds */
330 struct list_head rq_set_chain;
331 struct ptlrpc_request_set *rq_set;
332 void *rq_interpret_reply; /* Async completion handler */
333 union ptlrpc_async_args rq_async_args; /* Async completion context */
334 void *rq_ptlrpcd_data;
335 struct ptlrpc_request_pool *rq_pool; /* Pool if request from
339 static inline void lustre_set_req_swabbed(struct ptlrpc_request *req, int index)
341 LASSERT(index < sizeof(req->rq_req_swab_mask) * 8);
342 LASSERT((req->rq_req_swab_mask & (1 << index)) == 0);
343 req->rq_req_swab_mask |= 1 << index;
346 static inline void lustre_set_rep_swabbed(struct ptlrpc_request *req, int index)
348 LASSERT(index < sizeof(req->rq_rep_swab_mask) * 8);
349 LASSERT((req->rq_rep_swab_mask & (1 << index)) == 0);
350 req->rq_rep_swab_mask |= 1 << index;
353 static inline int lustre_req_swabbed(struct ptlrpc_request *req, int index)
355 LASSERT(index < sizeof(req->rq_req_swab_mask) * 8);
356 return req->rq_req_swab_mask & (1 << index);
359 static inline int lustre_rep_swabbed(struct ptlrpc_request *req, int index)
361 LASSERT(index < sizeof(req->rq_rep_swab_mask) * 8);
362 return req->rq_rep_swab_mask & (1 << index);
365 #define SWAB_PARANOIA 1
368 /* unpacking: assert idx not unpacked already */
369 #define LASSERT_REQSWAB(rq, idx) lustre_set_req_swabbed(rq, idx)
370 #define LASSERT_REPSWAB(rq, idx) lustre_set_rep_swabbed(rq, idx)
372 /* just looking: assert idx already unpacked */
373 #define LASSERT_REQSWABBED(rq, idx) LASSERT(lustre_req_swabbed(rq, idx))
374 #define LASSERT_REPSWABBED(rq, idx) LASSERT(lustre_rep_swabbed(rq, idx))
377 #define LASSERT_REQSWAB(rq, idx)
378 #define LASSERT_REPSWAB(rq, idx)
379 #define LASSERT_REQSWABBED(rq, idx)
380 #define LASSERT_REPSWABBED(rq, idx)
383 static inline const char *
384 ptlrpc_rqphase2str(struct ptlrpc_request *req)
386 switch (req->rq_phase) {
393 case RQ_PHASE_INTERPRET:
395 case RQ_PHASE_COMPLETE:
402 /* Spare the preprocessor, spoil the bugs. */
403 #define FLAG(field, str) (field ? str : "")
405 #define DEBUG_REQ_FLAGS(req) \
406 ptlrpc_rqphase2str(req), \
407 FLAG(req->rq_intr, "I"), FLAG(req->rq_replied, "R"), \
408 FLAG(req->rq_err, "E"), \
409 FLAG(req->rq_timedout, "X") /* eXpired */, FLAG(req->rq_resend, "S"), \
410 FLAG(req->rq_restart, "T"), FLAG(req->rq_replay, "P"), \
411 FLAG(req->rq_no_resend, "N"), \
412 FLAG(req->rq_waiting, "W")
414 #define REQ_FLAGS_FMT "%s:%s%s%s%s%s%s%s%s%s"
416 void _debug_req(struct ptlrpc_request *req, __u32 mask,
417 struct libcfs_debug_msg_data *data, const char *fmt, ...)
418 __attribute__ ((format (printf, 4, 5)));
420 #define debug_req(cdls, level, req, file, func, line, fmt, a...) \
424 if (((level) & D_CANTMASK) != 0 || \
425 ((libcfs_debug & (level)) != 0 && \
426 (libcfs_subsystem_debug & DEBUG_SUBSYSTEM) != 0)) { \
427 static struct libcfs_debug_msg_data _req_dbg_data = \
428 DEBUG_MSG_DATA_INIT(cdls, DEBUG_SUBSYSTEM, file, func, line); \
429 _debug_req((req), (level), &_req_dbg_data, fmt, ##a); \
433 /* for most callers (level is a constant) this is resolved at compile time */
434 #define DEBUG_REQ(level, req, fmt, args...) \
436 if ((level) & (D_ERROR | D_WARNING)) { \
437 static cfs_debug_limit_state_t cdls; \
438 debug_req(&cdls, level, req, __FILE__, __func__, __LINE__, \
439 "@@@ "fmt" ", ## args); \
441 debug_req(NULL, level, req, __FILE__, __func__, __LINE__, \
442 "@@@ "fmt" ", ## args); \
445 struct ptlrpc_bulk_page {
446 struct list_head bp_link;
448 int bp_pageoffset; /* offset within a page */
449 struct page *bp_page;
452 #define BULK_GET_SOURCE 0
453 #define BULK_PUT_SINK 1
454 #define BULK_GET_SINK 2
455 #define BULK_PUT_SOURCE 3
457 struct ptlrpc_bulk_desc {
458 unsigned int bd_success:1; /* completed successfully */
459 unsigned int bd_network_rw:1; /* accessible to the network */
460 unsigned int bd_type:2; /* {put,get}{source,sink} */
461 unsigned int bd_registered:1; /* client side */
462 spinlock_t bd_lock; /* serialise with callback */
463 int bd_import_generation;
464 struct obd_export *bd_export;
465 struct obd_import *bd_import;
467 struct ptlrpc_request *bd_req; /* associated request */
468 cfs_waitq_t bd_waitq; /* server side only WQ */
469 int bd_iov_count; /* # entries in bd_iov */
470 int bd_max_iov; /* allocated size of bd_iov */
471 int bd_nob; /* # bytes covered */
472 int bd_nob_transferred; /* # bytes GOT/PUT */
476 struct ptlrpc_cb_id bd_cbid; /* network callback info */
477 lnet_handle_md_t bd_md_h; /* associated MD */
478 lnet_nid_t bd_sender; /* stash event::sender */
480 #if defined(__KERNEL__)
481 lnet_kiov_t bd_iov[0];
483 lnet_md_iovec_t bd_iov[0];
487 struct ptlrpc_thread {
489 struct list_head t_link; /* active threads for service, from svc->srv_threads */
491 void *t_data; /* thread-private data (preallocated memory) */
494 unsigned int t_id; /* service thread index, from ptlrpc_start_threads */
495 cfs_waitq_t t_ctl_waitq;
498 struct ptlrpc_request_buffer_desc {
499 struct list_head rqbd_list;
500 struct list_head rqbd_reqs;
501 struct ptlrpc_service *rqbd_service;
502 lnet_handle_md_t rqbd_md_h;
505 struct ptlrpc_cb_id rqbd_cbid;
506 struct ptlrpc_request rqbd_req;
509 typedef int (*svc_handler_t)(struct ptlrpc_request *req);
510 typedef void (*svcreq_printfn_t)(void *, struct ptlrpc_request *);
512 struct ptlrpc_service {
513 struct list_head srv_list; /* chain thru all services */
514 int srv_max_req_size; /* biggest request to receive */
515 int srv_max_reply_size; /* biggest reply to send */
516 int srv_buf_size; /* size of individual buffers */
517 int srv_nbuf_per_group; /* # buffers to allocate in 1 group */
518 int srv_nbufs; /* total # req buffer descs allocated */
519 int srv_threads_min; /* threads to start at SOW */
520 int srv_threads_max; /* thread upper limit */
521 int srv_threads_started; /* index of last started thread */
522 int srv_threads_running; /* # running threads */
523 int srv_n_difficult_replies; /* # 'difficult' replies */
524 int srv_n_active_reqs; /* # reqs being served */
525 cfs_duration_t srv_rqbd_timeout; /* timeout before re-posting reqs, in tick */
526 int srv_watchdog_timeout; /* soft watchdog timeout, in ms */
527 unsigned srv_cpu_affinity:1; /* bind threads to CPUs */
529 __u32 srv_req_portal;
530 __u32 srv_rep_portal;
532 int srv_n_queued_reqs; /* # reqs waiting to be served */
533 struct list_head srv_request_queue; /* reqs waiting for service */
535 struct list_head srv_request_history; /* request history */
536 __u64 srv_request_seq; /* next request sequence # */
537 __u64 srv_request_max_cull_seq; /* highest seq culled from history */
538 svcreq_printfn_t srv_request_history_print_fn; /* service-specific print fn */
540 struct list_head srv_idle_rqbds; /* request buffers to be reposted */
541 struct list_head srv_active_rqbds; /* req buffers receiving */
542 struct list_head srv_history_rqbds; /* request buffer history */
543 int srv_nrqbd_receiving; /* # posted request buffers */
544 int srv_n_history_rqbds; /* # request buffers in history */
545 int srv_max_history_rqbds;/* max # request buffers in history */
547 atomic_t srv_outstanding_replies;
548 struct list_head srv_active_replies; /* all the active replies */
549 struct list_head srv_reply_queue; /* replies waiting for service */
551 cfs_waitq_t srv_waitq; /* all threads sleep on this. This
552 * wait-queue is signalled when new
553 * incoming request arrives and when
554 * difficult reply has to be handled. */
556 struct list_head srv_threads; /* service thread list */
557 svc_handler_t srv_handler;
559 char *srv_name; /* only statically allocated strings here; we don't clean them */
560 char *srv_thread_name; /* only statically allocated strings here; we don't clean them */
564 cfs_proc_dir_entry_t *srv_procroot;
565 struct lprocfs_stats *srv_stats;
567 /* List of free reply_states */
568 struct list_head srv_free_rs_list;
569 /* waitq to run, when adding stuff to srv_free_rs_list */
570 cfs_waitq_t srv_free_rs_waitq;
573 * if non-NULL called during thread creation (ptlrpc_start_thread())
574 * to initialize service specific per-thread state.
576 int (*srv_init)(struct ptlrpc_thread *thread);
578 * if non-NULL called during thread shutdown (ptlrpc_main()) to
579 * destruct state created by ->srv_init().
581 void (*srv_done)(struct ptlrpc_thread *thread);
583 //struct ptlrpc_srv_ni srv_interfaces[0];
586 /* ptlrpc/events.c */
587 extern lnet_handle_eq_t ptlrpc_eq_h;
588 extern int ptlrpc_uuid_to_peer(struct obd_uuid *uuid,
589 lnet_process_id_t *peer, lnet_nid_t *self);
590 extern void request_out_callback (lnet_event_t *ev);
591 extern void reply_in_callback(lnet_event_t *ev);
592 extern void client_bulk_callback (lnet_event_t *ev);
593 extern void request_in_callback(lnet_event_t *ev);
594 extern void reply_out_callback(lnet_event_t *ev);
595 extern void server_bulk_callback (lnet_event_t *ev);
597 /* ptlrpc/connection.c */
598 void ptlrpc_dump_connections(void);
599 void ptlrpc_readdress_connection(struct ptlrpc_connection *, struct obd_uuid *);
600 struct ptlrpc_connection *ptlrpc_get_connection(lnet_process_id_t peer,
601 lnet_nid_t self, struct obd_uuid *uuid);
602 int ptlrpc_put_connection(struct ptlrpc_connection *c);
603 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
604 void ptlrpc_init_connection(void);
605 void ptlrpc_cleanup_connection(void);
606 extern lnet_pid_t ptl_get_pid(void);
608 /* ptlrpc/niobuf.c */
609 int ptlrpc_start_bulk_transfer(struct ptlrpc_bulk_desc *desc);
610 void ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc);
611 int ptlrpc_register_bulk(struct ptlrpc_request *req);
612 void ptlrpc_unregister_bulk (struct ptlrpc_request *req);
614 static inline int ptlrpc_bulk_active (struct ptlrpc_bulk_desc *desc)
618 spin_lock(&desc->bd_lock);
619 rc = desc->bd_network_rw;
620 spin_unlock(&desc->bd_lock);
624 int ptlrpc_send_reply(struct ptlrpc_request *req, int);
625 int ptlrpc_reply(struct ptlrpc_request *req);
626 int ptlrpc_error(struct ptlrpc_request *req);
627 void ptlrpc_resend_req(struct ptlrpc_request *request);
628 int ptl_send_rpc(struct ptlrpc_request *request, int noreply);
629 int ptlrpc_register_rqbd (struct ptlrpc_request_buffer_desc *rqbd);
631 /* ptlrpc/client.c */
632 void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
633 struct ptlrpc_client *);
634 void ptlrpc_cleanup_client(struct obd_import *imp);
635 struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid);
638 ptlrpc_client_receiving_reply (struct ptlrpc_request *req)
642 spin_lock(&req->rq_lock);
643 rc = req->rq_receiving_reply;
644 spin_unlock(&req->rq_lock);
649 ptlrpc_client_replied (struct ptlrpc_request *req)
653 spin_lock(&req->rq_lock);
654 rc = req->rq_replied;
655 spin_unlock(&req->rq_lock);
660 ptlrpc_wake_client_req (struct ptlrpc_request *req)
662 if (req->rq_set == NULL)
663 cfs_waitq_signal(&req->rq_reply_waitq);
665 cfs_waitq_signal(&req->rq_set->set_waitq);
668 int ptlrpc_queue_wait(struct ptlrpc_request *req);
669 int ptlrpc_replay_req(struct ptlrpc_request *req);
670 void ptlrpc_unregister_reply(struct ptlrpc_request *req);
671 void ptlrpc_restart_req(struct ptlrpc_request *req);
672 void ptlrpc_abort_inflight(struct obd_import *imp);
674 struct ptlrpc_request_set *ptlrpc_prep_set(void);
675 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
676 int ptlrpc_check_set(struct ptlrpc_request_set *set);
677 int ptlrpc_set_wait(struct ptlrpc_request_set *);
678 int ptlrpc_expired_set(void *data);
679 void ptlrpc_interrupted_set(void *data);
680 void ptlrpc_mark_interrupted(struct ptlrpc_request *req);
681 void ptlrpc_set_destroy(struct ptlrpc_request_set *);
682 void ptlrpc_set_add_req(struct ptlrpc_request_set *, struct ptlrpc_request *);
683 void ptlrpc_set_add_new_req(struct ptlrpc_request_set *,
684 struct ptlrpc_request *);
686 void ptlrpc_free_rq_pool(struct ptlrpc_request_pool *pool);
687 void ptlrpc_add_rqs_to_pool(struct ptlrpc_request_pool *pool, int num_rq);
688 struct ptlrpc_request_pool *ptlrpc_init_rq_pool(int, int,
689 void (*populate_pool)(struct ptlrpc_request_pool *, int));
690 struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, __u32 version,
691 int opcode, int count, int *lengths,
693 struct ptlrpc_request *ptlrpc_prep_req_pool(struct obd_import *imp,
694 __u32 version, int opcode,
695 int count, int *lengths, char **bufs,
696 struct ptlrpc_request_pool *pool);
697 void ptlrpc_free_req(struct ptlrpc_request *request);
698 void ptlrpc_req_finished(struct ptlrpc_request *request);
699 void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request);
700 struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req);
701 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp (struct ptlrpc_request *req,
702 int npages, int type, int portal);
703 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp(struct ptlrpc_request *req,
704 int npages, int type, int portal);
705 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
706 void ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
707 cfs_page_t *page, int pageoffset, int len);
708 void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
709 struct obd_import *imp);
710 __u64 ptlrpc_next_xid(void);
711 __u64 ptlrpc_sample_next_xid(void);
712 __u64 ptlrpc_req_xid(struct ptlrpc_request *request);
714 /* ptlrpc/service.c */
715 void ptlrpc_save_lock (struct ptlrpc_request *req,
716 struct lustre_handle *lock, int mode);
717 void ptlrpc_commit_replies (struct obd_device *obd);
718 void ptlrpc_schedule_difficult_reply (struct ptlrpc_reply_state *rs);
719 struct ptlrpc_service *ptlrpc_init_svc(int nbufs, int bufsize, int max_req_size,
721 int req_portal, int rep_portal,
722 int watchdog_timeout, /* in ms */
723 svc_handler_t, char *name,
724 cfs_proc_dir_entry_t *proc_entry,
726 int min_threads, int max_threads,
728 void ptlrpc_stop_all_threads(struct ptlrpc_service *svc);
730 int ptlrpc_start_threads(struct obd_device *dev, struct ptlrpc_service *svc);
731 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc);
732 int ptlrpc_unregister_service(struct ptlrpc_service *service);
733 int liblustre_check_services (void *arg);
734 void ptlrpc_daemonize(char *name);
735 int ptlrpc_service_health_check(struct ptlrpc_service *);
738 struct ptlrpc_svc_data {
740 struct ptlrpc_service *svc;
741 struct ptlrpc_thread *thread;
742 struct obd_device *dev;
745 /* ptlrpc/import.c */
746 int ptlrpc_connect_import(struct obd_import *imp, char * new_uuid);
747 int ptlrpc_init_import(struct obd_import *imp);
748 int ptlrpc_disconnect_import(struct obd_import *imp, int noclose);
749 int ptlrpc_import_recovery_state_machine(struct obd_import *imp);
751 /* ptlrpc/pack_generic.c */
752 int lustre_msg_swabbed(struct lustre_msg *msg);
753 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version);
754 int lustre_pack_request(struct ptlrpc_request *, __u32 magic, int count,
755 int *lens, char **bufs);
756 int lustre_pack_reply(struct ptlrpc_request *, int count, int *lens,
758 void lustre_shrink_reply(struct ptlrpc_request *req, int segment,
759 unsigned int newlen, int move_data);
760 void lustre_free_reply_state(struct ptlrpc_reply_state *rs);
761 int lustre_msg_size(__u32 magic, int count, int *lengths);
762 int lustre_unpack_msg(struct lustre_msg *m, int len);
763 void *lustre_msg_buf(struct lustre_msg *m, int n, int minlen);
764 int lustre_msg_buflen(struct lustre_msg *m, int n);
765 void lustre_msg_set_buflen(struct lustre_msg *m, int n, int len);
766 int lustre_msg_bufcount(struct lustre_msg *m);
767 char *lustre_msg_string (struct lustre_msg *m, int n, int max_len);
768 void *lustre_swab_buf(struct lustre_msg *, int n, int minlen, void *swabber);
769 void *lustre_swab_reqbuf(struct ptlrpc_request *req, int n, int minlen,
771 void *lustre_swab_repbuf(struct ptlrpc_request *req, int n, int minlen,
773 __u32 lustre_msg_get_flags(struct lustre_msg *msg);
774 void lustre_msg_add_flags(struct lustre_msg *msg, int flags);
775 void lustre_msg_set_flags(struct lustre_msg *msg, int flags);
776 void lustre_msg_clear_flags(struct lustre_msg *msg, int flags);
777 __u32 lustre_msg_get_op_flags(struct lustre_msg *msg);
778 void lustre_msg_add_op_flags(struct lustre_msg *msg, int flags);
779 void lustre_msg_set_op_flags(struct lustre_msg *msg, int flags);
780 struct lustre_handle *lustre_msg_get_handle(struct lustre_msg *msg);
781 __u32 lustre_msg_get_type(struct lustre_msg *msg);
782 __u32 lustre_msg_get_version(struct lustre_msg *msg);
783 void lustre_msg_add_version(struct lustre_msg *msg, int version);
784 __u32 lustre_msg_get_opc(struct lustre_msg *msg);
785 __u64 lustre_msg_get_last_xid(struct lustre_msg *msg);
786 __u64 lustre_msg_get_last_committed(struct lustre_msg *msg);
787 __u64 lustre_msg_get_transno(struct lustre_msg *msg);
788 int lustre_msg_get_status(struct lustre_msg *msg);
789 __u32 lustre_msg_get_conn_cnt(struct lustre_msg *msg);
790 __u32 lustre_msg_get_magic(struct lustre_msg *msg);
791 void lustre_msg_set_handle(struct lustre_msg *msg,struct lustre_handle *handle);
792 void lustre_msg_set_type(struct lustre_msg *msg, __u32 type);
793 void lustre_msg_set_opc(struct lustre_msg *msg, __u32 opc);
794 void lustre_msg_set_last_xid(struct lustre_msg *msg, __u64 last_xid);
795 void lustre_msg_set_last_committed(struct lustre_msg *msg,__u64 last_committed);
796 void lustre_msg_set_transno(struct lustre_msg *msg, __u64 transno);
797 void lustre_msg_set_status(struct lustre_msg *msg, __u32 status);
798 void lustre_msg_set_conn_cnt(struct lustre_msg *msg, __u32 conn_cnt);
801 ptlrpc_rs_addref(struct ptlrpc_reply_state *rs)
803 LASSERT(atomic_read(&rs->rs_refcount) > 0);
804 atomic_inc(&rs->rs_refcount);
808 ptlrpc_rs_decref(struct ptlrpc_reply_state *rs)
810 LASSERT(atomic_read(&rs->rs_refcount) > 0);
811 if (atomic_dec_and_test(&rs->rs_refcount))
812 lustre_free_reply_state(rs);
815 static inline __u32 lustre_request_magic(struct ptlrpc_request *req)
817 return lustre_msg_get_magic(req->rq_reqmsg);
820 static inline int ptlrpc_req_get_repsize(struct ptlrpc_request *req)
822 switch (req->rq_reqmsg->lm_magic) {
823 case LUSTRE_MSG_MAGIC_V1:
824 CERROR("function not supported for lustre_msg V1!\n");
826 case LUSTRE_MSG_MAGIC_V2:
827 return req->rq_reqmsg->lm_repsize;
829 LASSERTF(0, "incorrect message magic: %08x\n",
830 req->rq_reqmsg->lm_magic);
836 ptlrpc_req_set_repsize(struct ptlrpc_request *req, int count, int *lens)
838 req->rq_replen = lustre_msg_size(req->rq_reqmsg->lm_magic, count, lens);
839 if (req->rq_reqmsg->lm_magic == LUSTRE_MSG_MAGIC_V2)
840 req->rq_reqmsg->lm_repsize = req->rq_replen;
843 /* ldlm/ldlm_lib.c */
844 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf);
845 int client_obd_cleanup(struct obd_device * obddev);
846 int client_connect_import(struct lustre_handle *conn, struct obd_device *obd,
847 struct obd_uuid *cluuid, struct obd_connect_data *);
848 int client_disconnect_export(struct obd_export *exp);
849 int client_import_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
851 int client_import_del_conn(struct obd_import *imp, struct obd_uuid *uuid);
852 int import_set_conn_priority(struct obd_import *imp, struct obd_uuid *uuid);
854 /* ptlrpc/pinger.c */
855 int ptlrpc_pinger_add_import(struct obd_import *imp);
856 int ptlrpc_pinger_del_import(struct obd_import *imp);
858 void ping_evictor_start(void);
859 void ping_evictor_stop(void);
861 #define ping_evictor_start() do {} while (0)
862 #define ping_evictor_stop() do {} while (0)
865 /* ptlrpc/ptlrpcd.c */
866 void ptlrpcd_wake(struct ptlrpc_request *req);
867 void ptlrpcd_add_req(struct ptlrpc_request *req);
868 int ptlrpcd_addref(void);
869 void ptlrpcd_decref(void);
871 /* ptlrpc/lproc_ptlrpc.c */
873 void ptlrpc_lprocfs_register_obd(struct obd_device *obd);
874 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd);
875 void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int opc, int bytes);
877 static inline void ptlrpc_lprocfs_register_obd(struct obd_device *obd) {}
878 static inline void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd) {}
879 static inline void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int opc,
883 /* ptlrpc/llog_server.c */
884 int llog_origin_handle_create(struct ptlrpc_request *req);
885 int llog_origin_handle_destroy(struct ptlrpc_request *req);
886 int llog_origin_handle_prev_block(struct ptlrpc_request *req);
887 int llog_origin_handle_next_block(struct ptlrpc_request *req);
888 int llog_origin_handle_read_header(struct ptlrpc_request *req);
889 int llog_origin_handle_close(struct ptlrpc_request *req);
890 int llog_origin_handle_cancel(struct ptlrpc_request *req);
891 int llog_catinfo(struct ptlrpc_request *req);
893 /* ptlrpc/llog_client.c */
894 extern struct llog_operations llog_client_ops;