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 <linux/kp30.h>
36 // #include <linux/obd.h>
37 #include <portals/p30.h>
38 #include <portals/lib-types.h> /* FIXME (for PTL_MD_MAX_IOV) */
39 #include <linux/lustre_idl.h>
40 #include <linux/lustre_ha.h>
41 #include <linux/lustre_import.h>
42 #include <linux/lprocfs_status.h>
44 /* Size over which to OBD_VMALLOC() rather than OBD_ALLOC() service request
46 #define SVC_BUF_VMALLOC_THRESHOLD (2*PAGE_SIZE)
48 /* The following constants determine how much memory is devoted to
49 * buffering in the lustre services.
51 * ?_NEVENTS # event queue entries
53 * ?_NBUFS # request buffers
54 * ?_BUFSIZE # bytes in a single request buffer
55 * total memory = ?_NBUFS * ?_BUFSIZE
57 * ?_MAXREQSIZE # maximum request service will receive
58 * messages larger than ?_MAXREQSIZE are dropped.
59 * request buffers are auto-unlinked when less than ?_MAXREQSIZE
63 #define LDLM_NUM_THREADS min(smp_num_cpus * smp_num_cpus * 8, 64)
64 #define LDLM_NBUF_MAX 256UL
65 #define LDLM_BUFSIZE (8 * 1024)
66 #define LDLM_MAXREQSIZE (5 * 1024)
67 #define LDLM_MAXMEM (num_physpages*(PAGE_SIZE/1024))
68 #define LDLM_NBUFS min(LDLM_MAXMEM/LDLM_BUFSIZE, LDLM_NBUF_MAX)
70 #define MDT_MAX_THREADS 32UL
71 #define MDT_NUM_THREADS max(min_t(unsigned long, num_physpages / 8192, \
72 MDT_MAX_THREADS), 2UL)
73 #define MDS_NBUF_MAX 512UL
74 #define MDS_BUFSIZE (8 * 1024)
75 /* Assume file name length = FNAME_MAX = 256 (true for extN).
76 * path name length = PATH_MAX = 4096
77 * LOV MD size max = EA_MAX = 4000
78 * symlink: FNAME_MAX + PATH_MAX <- largest
79 * link: FNAME_MAX + PATH_MAX (mds_rec_link < mds_rec_create)
80 * rename: FNAME_MAX + FNAME_MAX
81 * open: FNAME_MAX + EA_MAX
83 * MDS_MAXREQSIZE ~= 4736 bytes =
84 * lustre_msg + ldlm_request + mds_body + mds_rec_create + FNAME_MAX + PATH_MAX
86 * Realistic size is about 512 bytes (20 character name + 128 char symlink),
87 * except in the open case where there are a large number of OSTs in a LOV.
89 #define MDS_MAXREQSIZE (5 * 1024)
90 #define MDS_MAXMEM (num_physpages*(PAGE_SIZE/512))
91 #define MDS_NBUFS min(MDS_MAXMEM/MDS_BUFSIZE, MDS_NBUF_MAX)
93 #define OST_MAX_THREADS 36UL
94 #define OST_NUM_THREADS max(min_t(unsigned long, num_physpages / 8192, \
95 OST_MAX_THREADS), 2UL)
96 #define OST_NBUF_MAX 5000UL
97 #define OST_BUFSIZE (8 * 1024)
98 /* OST_MAXREQSIZE ~= 1640 bytes =
99 * lustre_msg + obdo + 16 * obd_ioobj + 64 * niobuf_remote
101 * - single object with 16 pages is 512 bytes
102 * - OST_MAXREQSIZE must be at least 1 page of cookies plus some spillover
104 #define OST_MAXREQSIZE (5 * 1024)
105 #define OST_MAXMEM (num_physpages*(PAGE_SIZE/512))
106 #define OST_NBUFS min(OST_MAXMEM/OST_BUFSIZE, OST_NBUF_MAX)
108 #define PTLBD_NUM_THREADS 4
109 #define PTLBD_NBUFS 20
110 #define PTLBD_BUFSIZE (32 * 1024)
111 #define PTLBD_MAXREQSIZE 1024
115 struct ptlrpc_ni *peer_ni;
118 struct ptlrpc_connection {
119 struct list_head c_link;
120 struct ptlrpc_peer c_peer;
121 struct obd_uuid c_remote_uuid;
125 struct ptlrpc_client {
126 __u32 cli_request_portal;
127 __u32 cli_reply_portal;
131 /* state flags of requests */
132 /* XXX only ones left are those used by the bulk descs as well! */
133 #define PTL_RPC_FL_INTR (1 << 0) /* reply wait was interrupted by user */
134 #define PTL_RPC_FL_TIMEOUT (1 << 7) /* request timed out waiting for reply */
136 #define REQ_MAX_ACK_LOCKS 8
138 #define SWAB_PARANOIA 1
140 /* unpacking: assert idx not unpacked already */
141 #define LASSERT_REQSWAB(rq, idx) \
143 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8); \
144 LASSERT (((rq)->rq_req_swab_mask & (1 << (idx))) == 0); \
145 (rq)->rq_req_swab_mask |= (1 << (idx)); \
148 #define LASSERT_REPSWAB(rq, idx) \
150 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8); \
151 LASSERT (((rq)->rq_rep_swab_mask & (1 << (idx))) == 0); \
152 (rq)->rq_rep_swab_mask |= (1 << (idx)); \
155 /* just looking: assert idx already unpacked */
156 #define LASSERT_REQSWABBED(rq, idx) \
157 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8 && \
158 ((rq)->rq_req_swab_mask & (1 << (idx))) != 0)
160 #define LASSERT_REPSWABBED(rq, idx) \
161 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8 && \
162 ((rq)->rq_rep_swab_mask & (1 << (idx))) != 0)
164 #define LASSERT_REQSWAB(rq, idx)
165 #define LASSERT_REPSWAB(rq, idx)
166 #define LASSERT_REQSWABBED(rq, idx)
167 #define LASSERT_REPSWABBED(rq, idx)
170 union ptlrpc_async_args {
171 /* Scratchpad for passing args to completion interpreter. Users
172 * cast to the struct of their choosing, and LASSERT that this is
173 * big enough. For _tons_ of context, OBD_ALLOC a struct and store
174 * a pointer to it here. The pointer_arg ensures this struct is at
175 * least big enough for that. */
176 void *pointer_arg[9];
180 struct ptlrpc_request_set;
181 typedef int (*set_interpreter_func)(struct ptlrpc_request_set *, void *, int);
183 struct ptlrpc_request_set {
184 int set_remaining; /* # uncompleted requests */
185 wait_queue_head_t set_waitq;
186 wait_queue_head_t *set_wakeup_ptr;
187 struct list_head set_requests;
188 set_interpreter_func set_interpret; /* completion callback */
189 union ptlrpc_async_args set_args; /* completion context */
190 /* locked so that any old caller can communicate requests to
191 * the set holder who can then fold them into the lock-free set */
192 spinlock_t set_new_req_lock;
193 struct list_head set_new_requests;
196 struct ptlrpc_bulk_desc;
199 * ptlrpc callback & work item stuff
201 struct ptlrpc_cb_id {
202 void (*cbid_fn)(ptl_event_t *ev); /* specific callback fn */
203 void *cbid_arg; /* additional arg */
206 #define RS_MAX_LOCKS 4
209 struct ptlrpc_reply_state {
210 struct ptlrpc_cb_id rs_cb_id;
211 struct list_head rs_list;
212 struct list_head rs_exp_list;
213 struct list_head rs_obd_list;
215 struct list_head rs_debug_list;
217 /* updates to following flag serialised by srv_request_lock */
218 unsigned int rs_difficult:1; /* ACK/commit stuff */
219 unsigned int rs_scheduled:1; /* being handled? */
220 unsigned int rs_scheduled_ever:1; /* any schedule attempts? */
221 unsigned int rs_handled:1; /* been handled yet? */
222 unsigned int rs_on_net:1; /* reply_out_callback pending? */
227 struct obd_export *rs_export;
228 struct ptlrpc_srv_ni *rs_srv_ni;
229 ptl_handle_md_t rs_md_h;
231 /* locks awaiting client reply ACK */
233 struct lustre_handle rs_locks[RS_MAX_LOCKS];
234 ldlm_mode_t rs_modes[RS_MAX_LOCKS];
235 /* last member: variable sized reply message */
236 struct lustre_msg rs_msg;
239 struct ptlrpc_request {
240 int rq_type; /* one of PTL_RPC_MSG_* */
241 struct list_head rq_list;
244 /* client-side flags */
245 unsigned int rq_intr:1, rq_replied:1, rq_err:1,
246 rq_timedout:1, rq_resend:1, rq_restart:1, rq_replay:1,
247 rq_no_resend:1, rq_waiting:1, rq_receiving_reply:1;
249 /* client-side refcount for SENT race */
250 atomic_t rq_refcount;
252 int rq_request_portal; /* XXX FIXME bug 249 */
253 int rq_reply_portal; /* XXX FIXME bug 249 */
255 /* client-side # reply bytes actually received */
259 struct lustre_msg *rq_reqmsg;
263 struct lustre_msg *rq_repmsg;
266 struct list_head rq_replay_list;
269 __u32 rq_req_swab_mask;
270 __u32 rq_rep_swab_mask;
273 int rq_import_generation;
274 enum lustre_imp_state rq_send_state;
276 /* client+server request */
277 ptl_handle_md_t rq_req_md_h;
278 struct ptlrpc_cb_id rq_req_cbid;
281 struct timeval rq_arrival_time; /* request arrival time */
282 struct ptlrpc_reply_state *rq_reply_state; /* separated reply state */
283 struct ptlrpc_request_buffer_desc *rq_rqbd; /* incoming request buffer */
285 /* client-only incoming reply */
286 ptl_handle_md_t rq_reply_md_h;
287 wait_queue_head_t rq_reply_waitq;
288 struct ptlrpc_cb_id rq_reply_cbid;
290 struct ptlrpc_peer rq_peer; /* XXX see service.c can this be factored away? */
291 struct obd_export *rq_export;
292 struct obd_import *rq_import;
294 void (*rq_replay_cb)(struct ptlrpc_request *);
295 void (*rq_commit_cb)(struct ptlrpc_request *);
298 struct ptlrpc_bulk_desc *rq_bulk; /* client side bulk */
299 time_t rq_sent; /* when the request was sent */
302 struct list_head rq_set_chain;
303 struct ptlrpc_request_set *rq_set;
304 void *rq_interpret_reply; /* Async completion handler */
305 union ptlrpc_async_args rq_async_args; /* Async completion context */
309 #define RQ_PHASE_NEW 0xebc0de00
310 #define RQ_PHASE_RPC 0xebc0de01
311 #define RQ_PHASE_BULK 0xebc0de02
312 #define RQ_PHASE_INTERPRET 0xebc0de03
313 #define RQ_PHASE_COMPLETE 0xebc0de04
315 /* Spare the preprocessor, spoil the bugs. */
316 #define FLAG(field, str) (field ? str : "")
318 #define PTLRPC_REQUEST_COMPLETE(req) ((req)->rq_phase > RQ_PHASE_RPC)
320 #define DEBUG_REQ_FLAGS(req) \
321 ((req->rq_phase == RQ_PHASE_NEW) ? "New" : \
322 (req->rq_phase == RQ_PHASE_RPC) ? "Rpc" : \
323 (req->rq_phase == RQ_PHASE_INTERPRET) ? "Interpret" : \
324 (req->rq_phase == RQ_PHASE_COMPLETE) ? "Complete" : "?phase?"), \
325 FLAG(req->rq_intr, "I"), FLAG(req->rq_replied, "R"), \
326 FLAG(req->rq_err, "E"), \
327 FLAG(req->rq_timedout, "X") /* eXpired */, FLAG(req->rq_resend, "S"), \
328 FLAG(req->rq_restart, "T"), FLAG(req->rq_replay, "P"), \
329 FLAG(req->rq_no_resend, "N"), \
330 FLAG(req->rq_waiting, "W")
332 #define REQ_FLAGS_FMT "%s:%s%s%s%s%s%s%s%s%s"
334 #define DEBUG_REQ(level, req, fmt, args...) \
336 CDEBUG(level, "@@@ " fmt \
337 " req@%p x"LPD64"/t"LPD64" o%d->%s@%s:%d lens %d/%d ref %d fl " \
338 REQ_FLAGS_FMT"/%x/%x rc %d/%d\n" , ## args, req, req->rq_xid, \
340 req->rq_reqmsg ? req->rq_reqmsg->opc : -1, \
341 req->rq_import ? (char *)req->rq_import->imp_target_uuid.uuid : "<?>", \
343 (char *)req->rq_import->imp_connection->c_remote_uuid.uuid : "<?>", \
344 (req->rq_import && req->rq_import->imp_client) ? \
345 req->rq_import->imp_client->cli_request_portal : -1, \
346 req->rq_reqlen, req->rq_replen, \
347 atomic_read(&req->rq_refcount), \
348 DEBUG_REQ_FLAGS(req), \
349 req->rq_reqmsg ? req->rq_reqmsg->flags : 0, \
350 req->rq_repmsg ? req->rq_repmsg->flags : 0, \
351 req->rq_status, req->rq_repmsg ? req->rq_repmsg->status : 0); \
354 struct ptlrpc_bulk_page {
355 struct list_head bp_link;
357 int bp_pageoffset; /* offset within a page */
358 struct page *bp_page;
361 #define BULK_GET_SOURCE 0
362 #define BULK_PUT_SINK 1
363 #define BULK_GET_SINK 2
364 #define BULK_PUT_SOURCE 3
366 struct ptlrpc_bulk_desc {
367 unsigned int bd_success:1; /* completed successfully */
368 unsigned int bd_network_rw:1; /* accessible to the network */
369 unsigned int bd_type:2; /* {put,get}{source,sink} */
370 unsigned int bd_registered:1; /* client side */
371 spinlock_t bd_lock; /* serialise with callback */
372 int bd_import_generation;
373 struct obd_export *bd_export;
374 struct obd_import *bd_import;
376 struct ptlrpc_request *bd_req; /* associated request */
377 wait_queue_head_t bd_waitq; /* server side only WQ */
378 int bd_page_count; /* # pages (== entries in bd_iov) */
379 int bd_max_pages; /* allocated size of bd_iov */
380 int bd_nob; /* # bytes covered */
381 int bd_nob_transferred; /* # bytes GOT/PUT */
385 struct ptlrpc_cb_id bd_cbid; /* network callback info */
386 ptl_handle_md_t bd_md_h; /* associated MD */
389 ptl_kiov_t bd_iov[PTL_MD_MAX_IOV];
391 struct iovec bd_iov[PTL_MD_MAX_IOV];
395 struct ptlrpc_thread {
396 struct list_head t_link;
399 wait_queue_head_t t_ctl_waitq;
402 struct ptlrpc_request_buffer_desc {
403 struct list_head rqbd_list;
404 struct ptlrpc_srv_ni *rqbd_srv_ni;
405 ptl_handle_md_t rqbd_md_h;
409 struct ptlrpc_cb_id rqbd_cbid;
410 struct ptlrpc_request rqbd_req;
413 /* event queues are per-ni, because one day we may get a hardware
414 * supported NAL that delivers events asynchonously wrt kernel portals
417 struct ptlrpc_ni { /* Generic interface state */
420 ptl_handle_ni_t pni_ni_h;
421 ptl_handle_eq_t pni_eq_h;
424 struct ptlrpc_srv_ni {
425 /* Interface-specific service state */
426 struct ptlrpc_service *sni_service; /* owning service */
427 struct ptlrpc_ni *sni_ni; /* network interface */
428 struct list_head sni_rqbds; /* all the request buffers */
429 struct list_head sni_active_replies; /* all the active replies */
430 int sni_nrqbd_receiving; /* # posted request buffers */
433 typedef int (*svc_handler_t)(struct ptlrpc_request *req);
435 struct ptlrpc_service {
436 struct list_head srv_list; /* chain thru all services */
437 int srv_max_req_size; /* biggest request to receive */
438 int srv_buf_size; /* size of individual buffers */
439 int srv_nbufs; /* total # req buffer descs allocated */
440 int srv_nthreads; /* # running threads */
441 int srv_n_difficult_replies; /* # 'difficult' replies */
442 int srv_n_active_reqs; /* # reqs being served */
444 __u32 srv_req_portal;
445 __u32 srv_rep_portal;
447 int srv_n_queued_reqs; /* # reqs waiting to be served */
448 struct list_head srv_request_queue; /* reqs waiting for service */
450 atomic_t srv_outstanding_replies;
451 struct list_head srv_reply_queue; /* replies waiting for service */
453 wait_queue_head_t srv_waitq; /* all threads sleep on this */
455 struct list_head srv_threads;
456 struct obd_device *srv_obddev;
457 svc_handler_t srv_handler;
459 char *srv_name; /* only statically allocated strings here; we don't clean them */
463 struct proc_dir_entry *srv_procroot;
464 struct lprocfs_stats *srv_stats;
466 struct ptlrpc_srv_ni srv_interfaces[0];
469 /* ptlrpc/events.c */
470 extern struct ptlrpc_ni ptlrpc_interfaces[];
471 extern int ptlrpc_ninterfaces;
472 extern int ptlrpc_uuid_to_peer(struct obd_uuid *uuid, struct ptlrpc_peer *peer);
473 extern void request_out_callback (ptl_event_t *ev);
474 extern void reply_in_callback(ptl_event_t *ev);
475 extern void client_bulk_callback (ptl_event_t *ev);
476 extern void request_in_callback(ptl_event_t *ev);
477 extern void reply_out_callback(ptl_event_t *ev);
478 extern void server_bulk_callback (ptl_event_t *ev);
480 /* ptlrpc/connection.c */
481 void ptlrpc_dump_connections(void);
482 void ptlrpc_readdress_connection(struct ptlrpc_connection *, struct obd_uuid *);
483 struct ptlrpc_connection *ptlrpc_get_connection(struct ptlrpc_peer *peer,
484 struct obd_uuid *uuid);
485 int ptlrpc_put_connection(struct ptlrpc_connection *c);
486 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
487 void ptlrpc_init_connection(void);
488 void ptlrpc_cleanup_connection(void);
490 /* ptlrpc/niobuf.c */
491 int ptlrpc_start_bulk_transfer(struct ptlrpc_bulk_desc *desc);
492 void ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc);
493 int ptlrpc_register_bulk(struct ptlrpc_request *req);
494 void ptlrpc_unregister_bulk (struct ptlrpc_request *req);
496 static inline int ptlrpc_bulk_active (struct ptlrpc_bulk_desc *desc)
501 spin_lock_irqsave (&desc->bd_lock, flags);
502 rc = desc->bd_network_rw;
503 spin_unlock_irqrestore (&desc->bd_lock, flags);
507 int ptlrpc_send_reply(struct ptlrpc_request *req, int);
508 int ptlrpc_reply(struct ptlrpc_request *req);
509 int ptlrpc_error(struct ptlrpc_request *req);
510 void ptlrpc_resend_req(struct ptlrpc_request *request);
511 int ptl_send_rpc(struct ptlrpc_request *request);
512 void ptlrpc_register_rqbd (struct ptlrpc_request_buffer_desc *rqbd);
514 /* ptlrpc/client.c */
515 void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
516 struct ptlrpc_client *);
517 void ptlrpc_cleanup_client(struct obd_import *imp);
518 struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid);
521 ptlrpc_client_receiving_reply (struct ptlrpc_request *req)
526 spin_lock_irqsave(&req->rq_lock, flags);
527 rc = req->rq_receiving_reply;
528 spin_unlock_irqrestore(&req->rq_lock, flags);
533 ptlrpc_client_replied (struct ptlrpc_request *req)
538 spin_lock_irqsave(&req->rq_lock, flags);
539 rc = req->rq_replied;
540 spin_unlock_irqrestore(&req->rq_lock, flags);
545 ptlrpc_wake_client_req (struct ptlrpc_request *req)
547 if (req->rq_set == NULL)
548 wake_up(&req->rq_reply_waitq);
550 wake_up(&req->rq_set->set_waitq);
553 int ptlrpc_queue_wait(struct ptlrpc_request *req);
554 int ptlrpc_replay_req(struct ptlrpc_request *req);
555 void ptlrpc_unregister_reply(struct ptlrpc_request *req);
556 void ptlrpc_restart_req(struct ptlrpc_request *req);
557 void ptlrpc_abort_inflight(struct obd_import *imp);
559 struct ptlrpc_request_set *ptlrpc_prep_set(void);
560 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
561 int ptlrpc_check_set(struct ptlrpc_request_set *set);
562 int ptlrpc_set_wait(struct ptlrpc_request_set *);
563 int ptlrpc_expired_set(void *data);
564 void ptlrpc_interrupted_set(void *data);
565 void ptlrpc_mark_interrupted(struct ptlrpc_request *req);
566 void ptlrpc_set_destroy(struct ptlrpc_request_set *);
567 void ptlrpc_set_add_req(struct ptlrpc_request_set *, struct ptlrpc_request *);
568 void ptlrpc_set_add_new_req(struct ptlrpc_request_set *,
569 struct ptlrpc_request *);
571 struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, int opcode,
572 int count, int *lengths, char **bufs);
573 void ptlrpc_free_req(struct ptlrpc_request *request);
574 void ptlrpc_req_finished(struct ptlrpc_request *request);
575 void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request);
576 struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req);
577 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp (struct ptlrpc_request *req,
578 int npages, int type, int portal);
579 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp(struct ptlrpc_request *req,
580 int npages, int type, int portal);
581 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
582 void ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
583 struct page *page, int pageoffset, int len);
584 void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
585 struct obd_import *imp);
586 __u64 ptlrpc_next_xid(void);
588 /* ptlrpc/service.c */
589 void ptlrpc_save_lock (struct ptlrpc_request *req,
590 struct lustre_handle *lock, int mode);
591 void ptlrpc_commit_replies (struct obd_device *obd);
592 void ptlrpc_schedule_difficult_reply (struct ptlrpc_reply_state *rs);
593 struct ptlrpc_service *ptlrpc_init_svc(int nbufs, int bufsize, int max_req_size,
594 int req_portal, int rep_portal,
595 svc_handler_t, char *name,
596 struct proc_dir_entry *proc_entry);
597 void ptlrpc_stop_all_threads(struct ptlrpc_service *svc);
598 int ptlrpc_start_n_threads(struct obd_device *dev, struct ptlrpc_service *svc,
599 int cnt, char *base_name);
600 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
602 int ptlrpc_unregister_service(struct ptlrpc_service *service);
603 int liblustre_check_services (void *arg);
605 struct ptlrpc_svc_data {
607 struct ptlrpc_service *svc;
608 struct ptlrpc_thread *thread;
609 struct obd_device *dev;
612 /* ptlrpc/import.c */
613 int ptlrpc_connect_import(struct obd_import *imp, char * new_uuid);
614 int ptlrpc_init_import(struct obd_import *imp);
615 int ptlrpc_disconnect_import(struct obd_import *imp);
616 int ptlrpc_import_recovery_state_machine(struct obd_import *imp);
618 /* ptlrpc/pack_generic.c */
619 int lustre_msg_swabbed(struct lustre_msg *msg);
620 int lustre_pack_request(struct ptlrpc_request *, int count, int *lens,
622 int lustre_pack_reply(struct ptlrpc_request *, int count, int *lens,
624 void lustre_free_reply_state(struct ptlrpc_reply_state *rs);
625 int lustre_msg_size(int count, int *lengths);
626 int lustre_unpack_msg(struct lustre_msg *m, int len);
627 void *lustre_msg_buf(struct lustre_msg *m, int n, int minlen);
628 char *lustre_msg_string (struct lustre_msg *m, int n, int max_len);
629 void *lustre_swab_reqbuf (struct ptlrpc_request *req, int n, int minlen,
631 void *lustre_swab_repbuf (struct ptlrpc_request *req, int n, int minlen,
634 /* ldlm/ldlm_lib.c */
635 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf);
636 int client_obd_cleanup(struct obd_device * obddev, int flags);
637 int client_connect_import(struct lustre_handle *conn, struct obd_device *obd,
638 struct obd_uuid *cluuid);
639 int client_disconnect_export(struct obd_export *exp, int failover);
641 /* ptlrpc/pinger.c */
642 int ptlrpc_pinger_add_import(struct obd_import *imp);
643 int ptlrpc_pinger_del_import(struct obd_import *imp);
645 /* ptlrpc/ptlrpcd.c */
646 void ptlrpcd_wake(void);
647 void ptlrpcd_add_req(struct ptlrpc_request *req);
648 int ptlrpcd_addref(void);
649 void ptlrpcd_decref(void);
651 /* ptlrpc/lproc_ptlrpc.c */
653 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev);
654 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obddev);
656 #define ptlrpc_lprocfs_register_obd(param...) do{}while(0)
657 #define ptlrpc_lprocfs_unregister_obd(param...) do{}while(0)
660 /* ptlrpc/llog_server.c */
661 int llog_origin_handle_create(struct ptlrpc_request *req);
662 int llog_origin_handle_next_block(struct ptlrpc_request *req);
663 int llog_origin_handle_read_header(struct ptlrpc_request *req);
664 int llog_origin_handle_close(struct ptlrpc_request *req);
665 int llog_origin_handle_cancel(struct ptlrpc_request *req);
666 int llog_catinfo(struct ptlrpc_request *req);
668 /* ptlrpc/llog_client.c */
669 extern struct llog_operations llog_client_ops;