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.
27 #include <linux/version.h>
28 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
29 #include <linux/tqueue.h>
31 #include <linux/workqueue.h>
35 #include <libcfs/kp30.h>
36 // #include <linux/obd.h>
37 #include <lnet/lnet.h>
38 #include <linux/lustre_idl.h>
39 #include <linux/lustre_ha.h>
40 #include <linux/lustre_import.h>
41 #include <linux/lprocfs_status.h>
43 /* MD flags we _always_ use */
44 #define PTLRPC_MD_OPTIONS 0
46 /* Define maxima for bulk I/O
47 * CAVEAT EMPTOR, with multinet (i.e. routers forwarding between networks)
48 * these limits are system wide and not interface-local. */
49 #define PTLRPC_MAX_BRW_SIZE LNET_MTU
50 #define PTLRPC_MAX_BRW_PAGES (PTLRPC_MAX_BRW_SIZE/PAGE_SIZE)
52 /* When PAGE_SIZE is a constant, we can check our arithmetic here with cpp! */
54 # if ((PTLRPC_MAX_BRW_PAGES & (PTLRPC_MAX_BRW_PAGES - 1)) != 0)
55 # error "PTLRPC_MAX_BRW_PAGES isn't a power of two"
57 # if (PTLRPC_MAX_BRW_SIZE != (PTLRPC_MAX_BRW_PAGES * PAGE_SIZE))
58 # error "PTLRPC_MAX_BRW_SIZE isn't PTLRPC_MAX_BRW_PAGES * PAGE_SIZE"
60 # if (PTLRPC_MAX_BRW_SIZE > LNET_MTU)
61 # error "PTLRPC_MAX_BRW_SIZE too big"
63 # if (PTLRPC_MAX_BRW_PAGES > LNET_MAX_IOV)
64 # error "PTLRPC_MAX_BRW_PAGES too big"
66 #endif /* __KERNEL__ */
68 /* Size over which to OBD_VMALLOC() rather than OBD_ALLOC() service request
70 #define SVC_BUF_VMALLOC_THRESHOLD (2 * PAGE_SIZE)
72 /* The following constants determine how memory is used to buffer incoming
75 * ?_NBUFS # buffers to allocate when growing the pool
76 * ?_BUFSIZE # bytes in a single request buffer
77 * ?_MAXREQSIZE # maximum request service will receive
79 * When fewer than ?_NBUFS/2 buffers are posted for receive, another chunk
80 * of ?_NBUFS is added to the pool.
82 * Messages larger than ?_MAXREQSIZE are dropped. Request buffers are
83 * considered full when less than ?_MAXREQSIZE is left in them.
86 #define LDLM_NUM_THREADS min((int)(smp_num_cpus * smp_num_cpus * 8), 64)
87 #define LDLM_NBUFS (64 * smp_num_cpus)
88 #define LDLM_BUFSIZE (8 * 1024)
89 #define LDLM_MAXREQSIZE (5 * 1024)
90 #define LDLM_MAXREPSIZE (1024)
92 #define MDT_MIN_THREADS 2UL
93 #define MDT_MAX_THREADS 32UL
94 #define MDT_NUM_THREADS max(min_t(unsigned long, MDT_MAX_THREADS, \
95 num_physpages >> (25 - PAGE_SHIFT)), 2UL)
96 #define FLD_NUM_THREADS max(min_t(unsigned long, MDT_MAX_THREADS, \
97 num_physpages >> (25 - PAGE_SHIFT)), 2UL)
99 #define MDS_NBUFS (64 * smp_num_cpus)
100 #define MDS_BUFSIZE (8 * 1024)
101 /* Assume file name length = FNAME_MAX = 256 (true for ext3).
102 * path name length = PATH_MAX = 4096
103 * LOV MD size max = EA_MAX = 4000
104 * symlink: FNAME_MAX + PATH_MAX <- largest
105 * link: FNAME_MAX + PATH_MAX (mds_rec_link < mds_rec_create)
106 * rename: FNAME_MAX + FNAME_MAX
107 * open: FNAME_MAX + EA_MAX
109 * MDS_MAXREQSIZE ~= 4736 bytes =
110 * lustre_msg + ldlm_request + mds_body + mds_rec_create + FNAME_MAX + PATH_MAX
111 * MDS_MAXREPSIZE ~= 8300 bytes = lustre_msg + llog_header
112 * or, for mds_close() and mds_reint_unlink() on a many-OST filesystem:
113 * = 9210 bytes = lustre_msg + mds_body + 160 * (easize + cookiesize)
115 * Realistic size is about 512 bytes (20 character name + 128 char symlink),
116 * except in the open case where there are a large number of OSTs in a LOV.
118 #define MDS_MAXREQSIZE (5 * 1024)
119 #define MDS_MAXREPSIZE max(9 * 1024, 280 + LOV_MAX_STRIPE_COUNT * 56)
121 /* FIXME fix all constants here */
122 #define MGS_MAX_THREADS 8UL
123 #define MGS_NUM_THREADS max(2UL, min_t(unsigned long, MGS_MAX_THREADS, \
124 num_physpages * smp_num_cpus >> (26 - PAGE_SHIFT)))
126 #define MGS_NBUFS (64 * smp_num_cpus)
127 #define MGS_BUFSIZE (8 * 1024)
128 #define MGS_MAXREQSIZE (5 * 1024)
129 #define MGS_MAXREPSIZE (9 * 1024)
131 #define OST_MAX_THREADS 512UL
132 #define OST_DEF_THREADS max_t(unsigned long, 2, \
133 (num_physpages >> (26-PAGE_SHIFT)) * smp_num_cpus)
134 #define OST_NBUFS (64 * smp_num_cpus)
135 #define OST_BUFSIZE (8 * 1024)
136 /* OST_MAXREQSIZE ~= 4768 bytes =
137 * lustre_msg + obdo + 16 * obd_ioobj + 256 * niobuf_remote
139 * - single object with 16 pages is 512 bytes
140 * - OST_MAXREQSIZE must be at least 1 page of cookies plus some spillover
142 #define OST_MAXREQSIZE (5 * 1024)
143 #define OST_MAXREPSIZE (9 * 1024)
145 struct ptlrpc_connection {
146 struct list_head c_link;
148 lnet_process_id_t c_peer;
149 struct obd_uuid c_remote_uuid;
153 struct ptlrpc_client {
154 __u32 cli_request_portal;
155 __u32 cli_reply_portal;
159 /* state flags of requests */
160 /* XXX only ones left are those used by the bulk descs as well! */
161 #define PTL_RPC_FL_INTR (1 << 0) /* reply wait was interrupted by user */
162 #define PTL_RPC_FL_TIMEOUT (1 << 7) /* request timed out waiting for reply */
164 #define REQ_MAX_ACK_LOCKS 8
166 #define SWAB_PARANOIA 1
168 /* unpacking: assert idx not unpacked already */
169 #define LASSERT_REQSWAB(rq, idx) \
171 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8); \
172 LASSERT (((rq)->rq_req_swab_mask & (1 << (idx))) == 0); \
173 (rq)->rq_req_swab_mask |= (1 << (idx)); \
176 #define LASSERT_REPSWAB(rq, idx) \
178 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8); \
179 LASSERT (((rq)->rq_rep_swab_mask & (1 << (idx))) == 0); \
180 (rq)->rq_rep_swab_mask |= (1 << (idx)); \
183 /* just looking: assert idx already unpacked */
184 #define LASSERT_REQSWABBED(rq, idx) \
185 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8 && \
186 ((rq)->rq_req_swab_mask & (1 << (idx))) != 0)
188 #define LASSERT_REPSWABBED(rq, idx) \
189 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8 && \
190 ((rq)->rq_rep_swab_mask & (1 << (idx))) != 0)
192 #define LASSERT_REQSWAB(rq, idx)
193 #define LASSERT_REPSWAB(rq, idx)
194 #define LASSERT_REQSWABBED(rq, idx)
195 #define LASSERT_REPSWABBED(rq, idx)
198 union ptlrpc_async_args {
199 /* Scratchpad for passing args to completion interpreter. Users
200 * cast to the struct of their choosing, and LASSERT that this is
201 * big enough. For _tons_ of context, OBD_ALLOC a struct and store
202 * a pointer to it here. The pointer_arg ensures this struct is at
203 * least big enough for that. */
204 void *pointer_arg[9];
208 struct ptlrpc_request_set;
209 typedef int (*set_interpreter_func)(struct ptlrpc_request_set *, void *, int);
211 struct ptlrpc_request_set {
212 int set_remaining; /* # uncompleted requests */
213 wait_queue_head_t set_waitq;
214 wait_queue_head_t *set_wakeup_ptr;
215 struct list_head set_requests;
216 set_interpreter_func set_interpret; /* completion callback */
217 void *set_arg; /* completion context */
218 /* locked so that any old caller can communicate requests to
219 * the set holder who can then fold them into the lock-free set */
220 spinlock_t set_new_req_lock;
221 struct list_head set_new_requests;
224 struct ptlrpc_bulk_desc;
227 * ptlrpc callback & work item stuff
229 struct ptlrpc_cb_id {
230 void (*cbid_fn)(lnet_event_t *ev); /* specific callback fn */
231 void *cbid_arg; /* additional arg */
234 #define RS_MAX_LOCKS 4
237 struct ptlrpc_reply_state {
238 struct ptlrpc_cb_id rs_cb_id;
239 struct list_head rs_list;
240 struct list_head rs_exp_list;
241 struct list_head rs_obd_list;
243 struct list_head rs_debug_list;
245 /* updates to following flag serialised by srv_request_lock */
246 unsigned int rs_difficult:1; /* ACK/commit stuff */
247 unsigned int rs_scheduled:1; /* being handled? */
248 unsigned int rs_scheduled_ever:1;/* any schedule attempts? */
249 unsigned int rs_handled:1; /* been handled yet? */
250 unsigned int rs_on_net:1; /* reply_out_callback pending? */
251 unsigned int rs_prealloc:1; /* rs from prealloc list */
256 struct obd_export *rs_export;
257 struct ptlrpc_service *rs_service;
258 lnet_handle_md_t rs_md_h;
259 atomic_t rs_refcount;
261 /* locks awaiting client reply ACK */
263 struct lustre_handle rs_locks[RS_MAX_LOCKS];
264 ldlm_mode_t rs_modes[RS_MAX_LOCKS];
265 /* last member: variable sized reply message */
266 struct lustre_msg rs_msg;
269 struct ptlrpc_thread;
272 RQ_PHASE_NEW = 0xebc0de00,
273 RQ_PHASE_RPC = 0xebc0de01,
274 RQ_PHASE_BULK = 0xebc0de02,
275 RQ_PHASE_INTERPRET = 0xebc0de03,
276 RQ_PHASE_COMPLETE = 0xebc0de04,
279 struct ptlrpc_request_pool {
281 struct list_head prp_req_list; /* list of ptlrpc_request structs */
283 void (*prp_populate)(struct ptlrpc_request_pool *, int);
286 struct ptlrpc_request {
287 int rq_type; /* one of PTL_RPC_MSG_* */
288 struct list_head rq_list;
289 struct list_head rq_history_list; /* server-side history */
290 __u64 rq_history_seq; /* history sequence # */
293 /* client-side flags */
294 unsigned int rq_intr:1, rq_replied:1, rq_err:1,
295 rq_timedout:1, rq_resend:1, rq_restart:1,
297 * when ->rq_replay is set, request is kept by the client even
298 * after server commits corresponding transaction. This is
299 * used for operations that require sequence of multiple
300 * requests to be replayed. The only example currently is file
301 * open/close. When last request in such a sequence is
302 * committed, ->rq_replay is cleared on all requests in the
306 rq_no_resend:1, rq_waiting:1, rq_receiving_reply:1,
307 rq_no_delay:1, rq_net_err:1;
308 enum rq_phase rq_phase; /* one of RQ_PHASE_* */
309 atomic_t rq_refcount; /* client-side refcount for SENT race */
311 struct ptlrpc_thread *rq_svc_thread; /* initial thread servicing req */
313 int rq_request_portal; /* XXX FIXME bug 249 */
314 int rq_reply_portal; /* XXX FIXME bug 249 */
316 int rq_nob_received; /* client-side # reply bytes actually received */
319 struct lustre_msg *rq_reqmsg;
321 int rq_timeout; /* time to wait for reply (seconds) */
323 struct lustre_msg *rq_repmsg;
326 struct list_head rq_replay_list;
329 __u32 rq_req_swab_mask;
330 __u32 rq_rep_swab_mask;
333 int rq_import_generation;
334 enum lustre_imp_state rq_send_state;
336 /* client+server request */
337 lnet_handle_md_t rq_req_md_h;
338 struct ptlrpc_cb_id rq_req_cbid;
341 struct timeval rq_arrival_time; /* request arrival time */
342 struct ptlrpc_reply_state *rq_reply_state; /* separated reply state */
343 struct ptlrpc_request_buffer_desc *rq_rqbd; /* incoming request buffer*/
345 __u32 rq_uid; /* peer uid, used in MDS only */
348 /* client-only incoming reply */
349 lnet_handle_md_t rq_reply_md_h;
350 wait_queue_head_t rq_reply_waitq;
351 struct ptlrpc_cb_id rq_reply_cbid;
354 lnet_process_id_t rq_peer;
355 struct obd_export *rq_export;
356 struct obd_import *rq_import;
358 void (*rq_replay_cb)(struct ptlrpc_request *);
359 void (*rq_commit_cb)(struct ptlrpc_request *);
362 struct ptlrpc_bulk_desc *rq_bulk; /* client side bulk */
363 time_t rq_sent; /* when request sent, seconds */
366 struct list_head rq_set_chain;
367 struct ptlrpc_request_set *rq_set;
368 void *rq_interpret_reply; /* Async completion handler */
369 union ptlrpc_async_args rq_async_args; /* Async completion context */
370 void *rq_ptlrpcd_data;
371 struct ptlrpc_request_pool *rq_pool; /* Pool if request from
375 static inline const char *
376 ptlrpc_rqphase2str(struct ptlrpc_request *req)
378 switch (req->rq_phase) {
385 case RQ_PHASE_INTERPRET:
387 case RQ_PHASE_COMPLETE:
394 /* Spare the preprocessor, spoil the bugs. */
395 #define FLAG(field, str) (field ? str : "")
397 #define DEBUG_REQ_FLAGS(req) \
398 ptlrpc_rqphase2str(req), \
399 FLAG(req->rq_intr, "I"), FLAG(req->rq_replied, "R"), \
400 FLAG(req->rq_err, "E"), \
401 FLAG(req->rq_timedout, "X") /* eXpired */, FLAG(req->rq_resend, "S"), \
402 FLAG(req->rq_restart, "T"), FLAG(req->rq_replay, "P"), \
403 FLAG(req->rq_no_resend, "N"), \
404 FLAG(req->rq_waiting, "W")
406 #define REQ_FLAGS_FMT "%s:%s%s%s%s%s%s%s%s%s"
408 #define __DEBUG_REQ(CDEB_TYPE, level, req, fmt, args...) \
409 CDEB_TYPE(level, "@@@ " fmt \
410 " req@%p x"LPD64"/t"LPD64" o%d->%s@%s:%d lens %d/%d ref %d fl " \
411 REQ_FLAGS_FMT"/%x/%x rc %d/%d\n" , ## args, req, req->rq_xid, \
413 req->rq_reqmsg ? req->rq_reqmsg->opc : -1, \
414 req->rq_import ? obd2cli_tgt(req->rq_import->imp_obd) : "<?>", \
416 (char *)req->rq_import->imp_connection->c_remote_uuid.uuid : "<?>", \
417 (req->rq_import && req->rq_import->imp_client) ? \
418 req->rq_import->imp_client->cli_request_portal : -1, \
419 req->rq_reqlen, req->rq_replen, \
420 atomic_read(&req->rq_refcount), \
421 DEBUG_REQ_FLAGS(req), \
422 req->rq_reqmsg ? req->rq_reqmsg->flags : 0, \
423 req->rq_repmsg ? req->rq_repmsg->flags : 0, \
424 req->rq_status, req->rq_repmsg ? req->rq_repmsg->status : 0)
426 /* for most callers (level is a constant) this is resolved at compile time */
427 #define DEBUG_REQ(level, req, fmt, args...) \
429 if ((level) & (D_ERROR | D_WARNING)) \
430 __DEBUG_REQ(CDEBUG_LIMIT, level, req, fmt, ## args); \
432 __DEBUG_REQ(CDEBUG, level, req, fmt, ## args); \
435 #define DEBUG_REQ_EX(level, req, fmt, args...) \
437 if ((level) & (D_ERROR | D_WARNING)) \
438 __DEBUG_REQ(CDEBUG_LIMIT, D_ERROR, req, fmt, ## args); \
440 __DEBUG_REQ(CDEBUG_EX, level, req, fmt, ## args); \
443 struct ptlrpc_bulk_page {
444 struct list_head bp_link;
446 int bp_pageoffset; /* offset within a page */
447 struct page *bp_page;
450 #define BULK_GET_SOURCE 0
451 #define BULK_PUT_SINK 1
452 #define BULK_GET_SINK 2
453 #define BULK_PUT_SOURCE 3
455 struct ptlrpc_bulk_desc {
456 unsigned int bd_success:1; /* completed successfully */
457 unsigned int bd_network_rw:1; /* accessible to the network */
458 unsigned int bd_type:2; /* {put,get}{source,sink} */
459 unsigned int bd_registered:1; /* client side */
460 spinlock_t bd_lock; /* serialise with callback */
461 int bd_import_generation;
462 struct obd_export *bd_export;
463 struct obd_import *bd_import;
465 struct ptlrpc_request *bd_req; /* associated request */
466 wait_queue_head_t bd_waitq; /* server side only WQ */
467 int bd_iov_count; /* # entries in bd_iov */
468 int bd_max_iov; /* allocated size of bd_iov */
469 int bd_nob; /* # bytes covered */
470 int bd_nob_transferred; /* # bytes GOT/PUT */
474 struct ptlrpc_cb_id bd_cbid; /* network callback info */
475 lnet_handle_md_t bd_md_h; /* associated MD */
477 #if defined(__KERNEL__)
478 lnet_kiov_t bd_iov[0];
480 lnet_md_iovec_t bd_iov[0];
485 struct ptlrpc_thread {
487 struct list_head t_link; /* active threads for service, from svc->srv_threads */
489 void *t_data; /* thread-private data (preallocated memory) */
492 unsigned int t_id; /* service thread index, from ptlrpc_start_threads */
493 wait_queue_head_t t_ctl_waitq;
494 struct lu_context *t_ctx;
497 struct ptlrpc_request_buffer_desc {
498 struct list_head rqbd_list;
499 struct list_head rqbd_reqs;
500 struct ptlrpc_service *rqbd_service;
501 lnet_handle_md_t rqbd_md_h;
504 struct ptlrpc_cb_id rqbd_cbid;
505 struct ptlrpc_request rqbd_req;
508 typedef int (*svc_handler_t)(struct ptlrpc_request *req);
509 typedef void (*svcreq_printfn_t)(void *, struct ptlrpc_request *);
511 struct ptlrpc_service {
512 struct list_head srv_list; /* chain thru all services */
513 int srv_max_req_size; /* biggest request to receive */
514 int srv_max_reply_size; /* biggest reply to send */
515 int srv_buf_size; /* size of individual buffers */
516 int srv_nbuf_per_group; /* # buffers to allocate in 1 group */
517 int srv_nbufs; /* total # req buffer descs allocated */
518 int srv_nthreads; /* # running threads */
519 int srv_n_difficult_replies; /* # 'difficult' replies */
520 int srv_n_active_reqs; /* # reqs being served */
521 int srv_rqbd_timeout; /* timeout before re-posting reqs */
522 int srv_watchdog_timeout; /* soft watchdog timeout, in ms */
523 int srv_num_threads; /* # threads to start/started */
524 unsigned srv_cpu_affinity:1; /* bind threads to CPUs */
526 __u32 srv_req_portal;
527 __u32 srv_rep_portal;
529 int srv_n_queued_reqs; /* # reqs waiting to be served */
530 struct list_head srv_request_queue; /* reqs waiting for service */
532 struct list_head srv_request_history; /* request history */
533 __u64 srv_request_seq; /* next request sequence # */
534 __u64 srv_request_max_cull_seq; /* highest seq culled from history */
535 svcreq_printfn_t srv_request_history_print_fn; /* service-specific print fn */
537 struct list_head srv_idle_rqbds; /* request buffers to be reposted */
538 struct list_head srv_active_rqbds; /* req buffers receiving */
539 struct list_head srv_history_rqbds; /* request buffer history */
540 int srv_nrqbd_receiving; /* # posted request buffers */
541 int srv_n_history_rqbds; /* # request buffers in history */
542 int srv_max_history_rqbds; /* max # request buffers in history */
544 atomic_t srv_outstanding_replies;
545 struct list_head srv_active_replies; /* all the active replies */
546 struct list_head srv_reply_queue; /* replies waiting for service */
548 wait_queue_head_t srv_waitq; /* all threads sleep on this. This
549 * wait-queue is signalled when new
550 * incoming request arrives and when
551 * difficult reply has to be handled. */
553 struct list_head srv_threads;
554 svc_handler_t srv_handler;
556 char *srv_name; /* only statically allocated strings here; we don't clean them */
560 struct proc_dir_entry *srv_procroot;
561 struct lprocfs_stats *srv_stats;
563 /* List of free reply_states */
564 struct list_head srv_free_rs_list;
565 /* waitq to run, when adding stuff to srv_free_rs_list */
566 wait_queue_head_t srv_free_rs_waitq;
569 * if non-NULL called during thread creation (ptlrpc_start_thread())
570 * to initialize service specific per-thread state.
572 int (*srv_init)(struct ptlrpc_thread *thread);
574 * if non-NULL called during thread shutdown (ptlrpc_main()) to
575 * destruct state created by ->srv_init().
577 void (*srv_done)(struct ptlrpc_thread *thread);
579 //struct ptlrpc_srv_ni srv_interfaces[0];
582 /* ptlrpc/events.c */
583 extern lnet_handle_eq_t ptlrpc_eq_h;
584 extern int ptlrpc_uuid_to_peer(struct obd_uuid *uuid,
585 lnet_process_id_t *peer, lnet_nid_t *self);
586 extern void request_out_callback (lnet_event_t *ev);
587 extern void reply_in_callback(lnet_event_t *ev);
588 extern void client_bulk_callback (lnet_event_t *ev);
589 extern void request_in_callback(lnet_event_t *ev);
590 extern void reply_out_callback(lnet_event_t *ev);
591 extern void server_bulk_callback (lnet_event_t *ev);
593 /* ptlrpc/connection.c */
594 void ptlrpc_dump_connections(void);
595 void ptlrpc_readdress_connection(struct ptlrpc_connection *, struct obd_uuid *);
596 struct ptlrpc_connection *ptlrpc_get_connection(lnet_process_id_t peer,
597 lnet_nid_t self, struct obd_uuid *uuid);
598 int ptlrpc_put_connection(struct ptlrpc_connection *c);
599 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
600 void ptlrpc_init_connection(void);
601 void ptlrpc_cleanup_connection(void);
602 extern lnet_pid_t ptl_get_pid(void);
604 /* ptlrpc/niobuf.c */
605 int ptlrpc_start_bulk_transfer(struct ptlrpc_bulk_desc *desc);
606 void ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc);
607 int ptlrpc_register_bulk(struct ptlrpc_request *req);
608 void ptlrpc_unregister_bulk (struct ptlrpc_request *req);
610 static inline int ptlrpc_bulk_active (struct ptlrpc_bulk_desc *desc)
615 spin_lock_irqsave (&desc->bd_lock, flags);
616 rc = desc->bd_network_rw;
617 spin_unlock_irqrestore (&desc->bd_lock, flags);
621 int ptlrpc_send_reply(struct ptlrpc_request *req, int);
622 int ptlrpc_reply(struct ptlrpc_request *req);
623 int ptlrpc_error(struct ptlrpc_request *req);
624 void ptlrpc_resend_req(struct ptlrpc_request *request);
625 int ptl_send_rpc(struct ptlrpc_request *request, int noreply);
626 int ptlrpc_register_rqbd (struct ptlrpc_request_buffer_desc *rqbd);
628 /* ptlrpc/client.c */
629 void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
630 struct ptlrpc_client *);
631 void ptlrpc_cleanup_client(struct obd_import *imp);
632 struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid);
635 ptlrpc_client_receiving_reply (struct ptlrpc_request *req)
640 spin_lock_irqsave(&req->rq_lock, flags);
641 rc = req->rq_receiving_reply;
642 spin_unlock_irqrestore(&req->rq_lock, flags);
647 ptlrpc_client_replied (struct ptlrpc_request *req)
652 spin_lock_irqsave(&req->rq_lock, flags);
653 rc = req->rq_replied;
654 spin_unlock_irqrestore(&req->rq_lock, flags);
659 ptlrpc_wake_client_req (struct ptlrpc_request *req)
661 if (req->rq_set == NULL)
662 wake_up(&req->rq_reply_waitq);
664 wake_up(&req->rq_set->set_waitq);
667 int ptlrpc_queue_wait(struct ptlrpc_request *req);
668 int ptlrpc_replay_req(struct ptlrpc_request *req);
669 void ptlrpc_unregister_reply(struct ptlrpc_request *req);
670 void ptlrpc_restart_req(struct ptlrpc_request *req);
671 void ptlrpc_abort_inflight(struct obd_import *imp);
673 struct ptlrpc_request_set *ptlrpc_prep_set(void);
674 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
675 int ptlrpc_check_set(struct ptlrpc_request_set *set);
676 int ptlrpc_set_wait(struct ptlrpc_request_set *);
677 int ptlrpc_expired_set(void *data);
678 void ptlrpc_interrupted_set(void *data);
679 void ptlrpc_mark_interrupted(struct ptlrpc_request *req);
680 void ptlrpc_set_destroy(struct ptlrpc_request_set *);
681 void ptlrpc_set_add_req(struct ptlrpc_request_set *, struct ptlrpc_request *);
682 void ptlrpc_set_add_new_req(struct ptlrpc_request_set *,
683 struct ptlrpc_request *);
685 void ptlrpc_free_rq_pool(struct ptlrpc_request_pool *pool);
686 void ptlrpc_add_rqs_to_pool(struct ptlrpc_request_pool *pool, int num_rq);
687 struct ptlrpc_request_pool *ptlrpc_init_rq_pool(int, int,
688 void (*populate_pool)(struct ptlrpc_request_pool *, int));
689 struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, __u32 version, int opcode,
690 int count, int *lengths, char **bufs);
691 struct ptlrpc_request *ptlrpc_prep_req_pool(struct obd_import *imp, __u32 version, int opcode,
692 int count, int *lengths, char **bufs,
693 struct ptlrpc_request_pool *pool);
694 void ptlrpc_free_req(struct ptlrpc_request *request);
695 void ptlrpc_req_finished(struct ptlrpc_request *request);
696 void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request);
697 struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req);
698 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp (struct ptlrpc_request *req,
699 int npages, int type, int portal);
700 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp(struct ptlrpc_request *req,
701 int npages, int type, int portal);
702 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
703 void ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
704 struct page *page, int pageoffset, int len);
705 void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
706 struct obd_import *imp);
707 __u64 ptlrpc_next_xid(void);
708 __u64 ptlrpc_sample_next_xid(void);
709 __u64 ptlrpc_req_xid(struct ptlrpc_request *request);
711 struct ptlrpc_service_conf {
714 int psc_max_req_size;
715 int psc_max_reply_size;
718 int psc_watchdog_timeout; /* in ms */
723 /* ptlrpc/service.c */
724 void ptlrpc_save_lock (struct ptlrpc_request *req,
725 struct lustre_handle *lock, int mode);
726 void ptlrpc_commit_replies (struct obd_device *obd);
727 void ptlrpc_schedule_difficult_reply (struct ptlrpc_reply_state *rs);
729 struct ptlrpc_service *ptlrpc_init_svc_conf(struct ptlrpc_service_conf *c,
730 svc_handler_t h, char *name,
731 struct proc_dir_entry *proc_entry,
732 svcreq_printfn_t prntfn);
734 struct ptlrpc_service *ptlrpc_init_svc(int nbufs, int bufsize, int max_req_size,
736 int req_portal, int rep_portal,
737 int watchdog_timeout, /* in ms */
738 svc_handler_t, char *name,
739 struct proc_dir_entry *proc_entry,
740 svcreq_printfn_t, int num_threads);
741 void ptlrpc_stop_all_threads(struct ptlrpc_service *svc);
743 int ptlrpc_start_threads(struct obd_device *dev, struct ptlrpc_service *svc,
745 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
747 int ptlrpc_unregister_service(struct ptlrpc_service *service);
748 int liblustre_check_services (void *arg);
749 void ptlrpc_daemonize(char *name);
750 int ptlrpc_service_health_check(struct ptlrpc_service *);
753 struct ptlrpc_svc_data {
755 struct ptlrpc_service *svc;
756 struct ptlrpc_thread *thread;
757 struct obd_device *dev;
760 /* ptlrpc/import.c */
761 int ptlrpc_connect_import(struct obd_import *imp, char * new_uuid);
762 int ptlrpc_init_import(struct obd_import *imp);
763 int ptlrpc_disconnect_import(struct obd_import *imp);
764 int ptlrpc_import_recovery_state_machine(struct obd_import *imp);
766 /* ptlrpc/pack_generic.c */
767 int lustre_msg_swabbed(struct lustre_msg *msg);
768 int lustre_msg_check_version(struct lustre_msg *msg, __u32 version);
769 int lustre_pack_request(struct ptlrpc_request *, int count, const int *lens,
771 int lustre_pack_reply(struct ptlrpc_request *, int count, const int *lens,
773 void lustre_shrink_reply(struct ptlrpc_request *req,
774 int segment, unsigned int newlen, int move_data);
775 void lustre_free_reply_state(struct ptlrpc_reply_state *rs);
776 int lustre_msg_size(int count, const int *lengths);
777 int lustre_unpack_msg(struct lustre_msg *m, int len);
778 void *lustre_msg_buf(struct lustre_msg *m, int n, int minlen);
779 int lustre_msg_buflen(struct lustre_msg *m, int n);
780 char *lustre_msg_string (struct lustre_msg *m, int n, int max_len);
781 void *lustre_swab_buf(struct lustre_msg *, int n, int minlen, void *swabber);
782 void *lustre_swab_reqbuf (struct ptlrpc_request *req, int n, int minlen,
784 void *lustre_swab_repbuf (struct ptlrpc_request *req, int n, int minlen,
788 ptlrpc_rs_addref(struct ptlrpc_reply_state *rs)
790 LASSERT(atomic_read(&rs->rs_refcount) > 0);
791 atomic_inc(&rs->rs_refcount);
795 ptlrpc_rs_decref(struct ptlrpc_reply_state *rs)
797 LASSERT(atomic_read(&rs->rs_refcount) > 0);
798 if (atomic_dec_and_test(&rs->rs_refcount))
799 lustre_free_reply_state(rs);
802 /* ldlm/ldlm_lib.c */
803 int client_obd_setup(struct obd_device *obddev, struct lustre_cfg* lcfg);
804 int client_obd_cleanup(struct obd_device * obddev);
805 int client_connect_import(struct lustre_handle *conn, struct obd_device *obd,
806 struct obd_uuid *cluuid, struct obd_connect_data *);
807 int client_disconnect_export(struct obd_export *exp);
808 int client_import_add_conn(struct obd_import *imp, struct obd_uuid *uuid,
810 int client_import_del_conn(struct obd_import *imp, struct obd_uuid *uuid);
811 int import_set_conn_priority(struct obd_import *imp, struct obd_uuid *uuid);
813 /* ptlrpc/pinger.c */
814 int ptlrpc_pinger_add_import(struct obd_import *imp);
815 int ptlrpc_pinger_del_import(struct obd_import *imp);
817 void ping_evictor_start(void);
818 void ping_evictor_stop(void);
820 #define ping_evictor_start() do {} while (0)
821 #define ping_evictor_stop() do {} while (0)
824 /* ptlrpc/ptlrpcd.c */
825 void ptlrpcd_wake(struct ptlrpc_request *req);
826 void ptlrpcd_add_req(struct ptlrpc_request *req);
827 int ptlrpcd_addref(void);
828 void ptlrpcd_decref(void);
830 /* ptlrpc/lproc_ptlrpc.c */
832 void ptlrpc_lprocfs_register_obd(struct obd_device *obd);
833 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd);
835 static inline void ptlrpc_lprocfs_register_obd(struct obd_device *obd) {}
836 static inline void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd) {}
839 /* ptlrpc/llog_server.c */
840 int llog_origin_handle_create(struct ptlrpc_request *req);
841 int llog_origin_handle_destroy(struct ptlrpc_request *req);
842 int llog_origin_handle_prev_block(struct ptlrpc_request *req);
843 int llog_origin_handle_next_block(struct ptlrpc_request *req);
844 int llog_origin_handle_read_header(struct ptlrpc_request *req);
845 int llog_origin_handle_close(struct ptlrpc_request *req);
846 int llog_origin_handle_cancel(struct ptlrpc_request *req);
847 int llog_catinfo(struct ptlrpc_request *req);
849 /* ptlrpc/llog_client.c */
850 extern struct llog_operations llog_client_ops;