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 <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 (PTL_MD_EVENT_START_DISABLE | \
45 PTL_MD_LUSTRE_COMPLETION_SEMANTICS)
47 /* Define some large-ish maxima for bulk I/O
48 * CAVEAT EMPTOR, with multinet (i.e. gateways forwarding between networks)
49 * these limits are system wide and not interface-local. */
50 #define PTLRPC_MAX_BRW_SIZE (1 << 20)
51 #define PTLRPC_MAX_BRW_PAGES 512
53 /* ...reduce to fit... */
56 /* include a cray header here if relevant
57 * NB liblustre SIZE/PAGES is affected too, but it merges contiguous
58 * chunks, so FTTB, it always used contiguous MDs */
60 # include <portals/lib-types.h>
63 #if (defined(PTL_MTU) && (PTL_MTU < PTLRPC_MAX_BRW_SIZE))
64 # undef PTLRPC_MAX_BRW_SIZE
65 # define PTLRPC_MAX_BRW_SIZE PTL_MTU
67 #if (defined(PTL_MD_MAX_IOV) && (PTL_MD_MAX_IOV < PTLRPC_MAX_BRW_PAGES ))
68 # undef PTLRPC_MAX_BRW_PAGES
69 # define PTLRPC_MAX_BRW_PAGES PTL_MD_MAX_IOV
72 /* ...and make consistent... */
74 #if (PTLRPC_MAX_BRW_SIZE > PTLRPC_MAX_BRW_PAGES * PAGE_SIZE)
75 # undef PTLRPC_MAX_BRW_SIZE
76 # define PTLRPC_MAX_BRW_SIZE (PTLRPC_MAX_BRW_PAGES * PAGE_SIZE)
78 # undef PTLRPC_MAX_BRW_PAGES
79 # define PTLRPC_MAX_BRW_PAGES (PTLRPC_MAX_BRW_SIZE / PAGE_SIZE)
83 /* Size over which to OBD_VMALLOC() rather than OBD_ALLOC() service request
85 #define SVC_BUF_VMALLOC_THRESHOLD (2*PAGE_SIZE)
87 /* The following constants determine how much memory is devoted to
88 * buffering in the lustre services.
90 * ?_NEVENTS # event queue entries
92 * ?_NBUFS # request buffers
93 * ?_BUFSIZE # bytes in a single request buffer
94 * total memory = ?_NBUFS * ?_BUFSIZE
96 * ?_MAXREQSIZE # maximum request service will receive
97 * messages larger than ?_MAXREQSIZE are dropped.
98 * request buffers are auto-unlinked when less than ?_MAXREQSIZE
102 #define LDLM_NUM_THREADS min(smp_num_cpus * smp_num_cpus * 8, 64)
103 #define LDLM_NBUF_MAX 256UL
104 #define LDLM_BUFSIZE (8 * 1024)
105 #define LDLM_MAXREQSIZE (5 * 1024)
106 #define LDLM_MAXMEM (num_physpages*(PAGE_SIZE/1024))
107 #define LDLM_NBUFS min(LDLM_MAXMEM/LDLM_BUFSIZE, LDLM_NBUF_MAX)
109 #define MDT_MAX_THREADS 32UL
110 #define MDT_NUM_THREADS max(min_t(unsigned long, num_physpages / 8192, \
111 MDT_MAX_THREADS), 2UL)
112 #define MDS_NBUF_MAX 512UL
113 #define MDS_BUFSIZE (8 * 1024)
114 /* Assume file name length = FNAME_MAX = 256 (true for extN).
115 * path name length = PATH_MAX = 4096
116 * LOV MD size max = EA_MAX = 4000
117 * symlink: FNAME_MAX + PATH_MAX <- largest
118 * link: FNAME_MAX + PATH_MAX (mds_rec_link < mds_rec_create)
119 * rename: FNAME_MAX + FNAME_MAX
120 * open: FNAME_MAX + EA_MAX
122 * MDS_MAXREQSIZE ~= 4736 bytes =
123 * lustre_msg + ldlm_request + mds_body + mds_rec_create + FNAME_MAX + PATH_MAX
125 * Realistic size is about 512 bytes (20 character name + 128 char symlink),
126 * except in the open case where there are a large number of OSTs in a LOV.
128 #define MDS_MAXREQSIZE (5 * 1024)
129 #define MDS_MAXMEM (num_physpages*(PAGE_SIZE/128))
130 #define MDS_NBUFS min(MDS_MAXMEM/MDS_BUFSIZE, MDS_NBUF_MAX)
132 #define OST_MAX_THREADS 36UL
133 #define OST_NUM_THREADS max(min_t(unsigned long, num_physpages / 8192, \
134 OST_MAX_THREADS), 2UL)
135 #define OST_NBUF_MAX 5000UL
136 #define OST_BUFSIZE (8 * 1024)
137 /* OST_MAXREQSIZE ~= 1640 bytes =
138 * lustre_msg + obdo + 16 * obd_ioobj + 64 * niobuf_remote
140 * - single object with 16 pages is 512 bytes
141 * - OST_MAXREQSIZE must be at least 1 page of cookies plus some spillover
143 #define OST_MAXREQSIZE (5 * 1024)
144 #define OST_MAXMEM (num_physpages*(PAGE_SIZE/128))
145 #define OST_NBUFS min(OST_MAXMEM/OST_BUFSIZE, OST_NBUF_MAX)
147 #define PTLBD_NUM_THREADS 4
148 #define PTLBD_NBUFS 20
149 #define PTLBD_BUFSIZE (32 * 1024)
150 #define PTLBD_MAXREQSIZE 1024
154 struct ptlrpc_ni *peer_ni;
157 struct ptlrpc_connection {
158 struct list_head c_link;
159 struct ptlrpc_peer c_peer;
160 struct obd_uuid c_remote_uuid;
164 struct ptlrpc_client {
165 __u32 cli_request_portal;
166 __u32 cli_reply_portal;
170 /* state flags of requests */
171 /* XXX only ones left are those used by the bulk descs as well! */
172 #define PTL_RPC_FL_INTR (1 << 0) /* reply wait was interrupted by user */
173 #define PTL_RPC_FL_TIMEOUT (1 << 7) /* request timed out waiting for reply */
175 #define REQ_MAX_ACK_LOCKS 8
177 #define SWAB_PARANOIA 1
179 /* unpacking: assert idx not unpacked already */
180 #define LASSERT_REQSWAB(rq, idx) \
182 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8); \
183 LASSERT (((rq)->rq_req_swab_mask & (1 << (idx))) == 0); \
184 (rq)->rq_req_swab_mask |= (1 << (idx)); \
187 #define LASSERT_REPSWAB(rq, idx) \
189 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8); \
190 LASSERT (((rq)->rq_rep_swab_mask & (1 << (idx))) == 0); \
191 (rq)->rq_rep_swab_mask |= (1 << (idx)); \
194 /* just looking: assert idx already unpacked */
195 #define LASSERT_REQSWABBED(rq, idx) \
196 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8 && \
197 ((rq)->rq_req_swab_mask & (1 << (idx))) != 0)
199 #define LASSERT_REPSWABBED(rq, idx) \
200 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8 && \
201 ((rq)->rq_rep_swab_mask & (1 << (idx))) != 0)
203 #define LASSERT_REQSWAB(rq, idx)
204 #define LASSERT_REPSWAB(rq, idx)
205 #define LASSERT_REQSWABBED(rq, idx)
206 #define LASSERT_REPSWABBED(rq, idx)
209 union ptlrpc_async_args {
210 /* Scratchpad for passing args to completion interpreter. Users
211 * cast to the struct of their choosing, and LASSERT that this is
212 * big enough. For _tons_ of context, OBD_ALLOC a struct and store
213 * a pointer to it here. The pointer_arg ensures this struct is at
214 * least big enough for that. */
215 void *pointer_arg[9];
219 struct ptlrpc_request_set;
220 typedef int (*set_interpreter_func)(struct ptlrpc_request_set *, void *, int);
222 struct ptlrpc_request_set {
223 int set_remaining; /* # uncompleted requests */
224 wait_queue_head_t set_waitq;
225 wait_queue_head_t *set_wakeup_ptr;
226 struct list_head set_requests;
227 set_interpreter_func set_interpret; /* completion callback */
228 union ptlrpc_async_args set_args; /* completion context */
229 /* locked so that any old caller can communicate requests to
230 * the set holder who can then fold them into the lock-free set */
231 spinlock_t set_new_req_lock;
232 struct list_head set_new_requests;
235 struct ptlrpc_bulk_desc;
238 * ptlrpc callback & work item stuff
240 struct ptlrpc_cb_id {
241 void (*cbid_fn)(ptl_event_t *ev); /* specific callback fn */
242 void *cbid_arg; /* additional arg */
245 #define RS_MAX_LOCKS 4
248 struct ptlrpc_reply_state {
249 struct ptlrpc_cb_id rs_cb_id;
250 struct list_head rs_list;
251 struct list_head rs_exp_list;
252 struct list_head rs_obd_list;
254 struct list_head rs_debug_list;
256 /* updates to following flag serialised by srv_request_lock */
257 unsigned int rs_difficult:1; /* ACK/commit stuff */
258 unsigned int rs_scheduled:1; /* being handled? */
259 unsigned int rs_scheduled_ever:1; /* any schedule attempts? */
260 unsigned int rs_handled:1; /* been handled yet? */
261 unsigned int rs_on_net:1; /* reply_out_callback pending? */
266 struct obd_export *rs_export;
267 struct ptlrpc_srv_ni *rs_srv_ni;
268 ptl_handle_md_t rs_md_h;
270 /* locks awaiting client reply ACK */
272 struct lustre_handle rs_locks[RS_MAX_LOCKS];
273 ldlm_mode_t rs_modes[RS_MAX_LOCKS];
274 /* last member: variable sized reply message */
275 struct lustre_msg rs_msg;
278 struct ptlrpc_request {
279 int rq_type; /* one of PTL_RPC_MSG_* */
280 struct list_head rq_list;
283 /* client-side flags */
284 unsigned int rq_intr:1, rq_replied:1, rq_err:1,
285 rq_timedout:1, rq_resend:1, rq_restart:1, rq_replay:1,
286 rq_no_resend:1, rq_waiting:1, rq_receiving_reply:1,
289 /* client-side refcount for SENT race */
290 atomic_t rq_refcount;
292 int rq_request_portal; /* XXX FIXME bug 249 */
293 int rq_reply_portal; /* XXX FIXME bug 249 */
295 /* client-side # reply bytes actually received */
299 struct lustre_msg *rq_reqmsg;
303 struct lustre_msg *rq_repmsg;
306 struct list_head rq_replay_list;
309 __u32 rq_req_swab_mask;
310 __u32 rq_rep_swab_mask;
313 int rq_import_generation;
314 enum lustre_imp_state rq_send_state;
316 /* client+server request */
317 ptl_handle_md_t rq_req_md_h;
318 struct ptlrpc_cb_id rq_req_cbid;
321 struct timeval rq_arrival_time; /* request arrival time */
322 struct ptlrpc_reply_state *rq_reply_state; /* separated reply state */
323 struct ptlrpc_request_buffer_desc *rq_rqbd; /* incoming request buffer */
325 /* client-only incoming reply */
326 ptl_handle_md_t rq_reply_md_h;
327 wait_queue_head_t rq_reply_waitq;
328 struct ptlrpc_cb_id rq_reply_cbid;
330 struct ptlrpc_peer rq_peer; /* XXX see service.c can this be factored away? */
331 struct obd_export *rq_export;
332 struct obd_import *rq_import;
334 void (*rq_replay_cb)(struct ptlrpc_request *);
335 void (*rq_commit_cb)(struct ptlrpc_request *);
338 struct ptlrpc_bulk_desc *rq_bulk; /* client side bulk */
339 time_t rq_sent; /* when the request was sent */
342 struct list_head rq_set_chain;
343 struct ptlrpc_request_set *rq_set;
344 void *rq_interpret_reply; /* Async completion handler */
345 union ptlrpc_async_args rq_async_args; /* Async completion context */
346 void * rq_ptlrpcd_data;
350 #define RQ_PHASE_NEW 0xebc0de00
351 #define RQ_PHASE_RPC 0xebc0de01
352 #define RQ_PHASE_BULK 0xebc0de02
353 #define RQ_PHASE_INTERPRET 0xebc0de03
354 #define RQ_PHASE_COMPLETE 0xebc0de04
356 /* Spare the preprocessor, spoil the bugs. */
357 #define FLAG(field, str) (field ? str : "")
359 #define PTLRPC_REQUEST_COMPLETE(req) ((req)->rq_phase > RQ_PHASE_RPC)
361 #define DEBUG_REQ_FLAGS(req) \
362 ((req->rq_phase == RQ_PHASE_NEW) ? "New" : \
363 (req->rq_phase == RQ_PHASE_RPC) ? "Rpc" : \
364 (req->rq_phase == RQ_PHASE_INTERPRET) ? "Interpret" : \
365 (req->rq_phase == RQ_PHASE_COMPLETE) ? "Complete" : "?phase?"), \
366 FLAG(req->rq_intr, "I"), FLAG(req->rq_replied, "R"), \
367 FLAG(req->rq_err, "E"), \
368 FLAG(req->rq_timedout, "X") /* eXpired */, FLAG(req->rq_resend, "S"), \
369 FLAG(req->rq_restart, "T"), FLAG(req->rq_replay, "P"), \
370 FLAG(req->rq_no_resend, "N"), \
371 FLAG(req->rq_waiting, "W")
373 #define REQ_FLAGS_FMT "%s:%s%s%s%s%s%s%s%s%s"
375 #define DEBUG_REQ(level, req, fmt, args...) \
377 CDEBUG(level, "@@@ " fmt \
378 " req@%p x"LPD64"/t"LPD64" o%d->%s@%s:%d lens %d/%d ref %d fl " \
379 REQ_FLAGS_FMT"/%x/%x rc %d/%d\n" , ## args, req, req->rq_xid, \
381 req->rq_reqmsg ? req->rq_reqmsg->opc : -1, \
382 req->rq_import ? (char *)req->rq_import->imp_target_uuid.uuid : "<?>", \
384 (char *)req->rq_import->imp_connection->c_remote_uuid.uuid : "<?>", \
385 (req->rq_import && req->rq_import->imp_client) ? \
386 req->rq_import->imp_client->cli_request_portal : -1, \
387 req->rq_reqlen, req->rq_replen, \
388 atomic_read(&req->rq_refcount), \
389 DEBUG_REQ_FLAGS(req), \
390 req->rq_reqmsg ? req->rq_reqmsg->flags : 0, \
391 req->rq_repmsg ? req->rq_repmsg->flags : 0, \
392 req->rq_status, req->rq_repmsg ? req->rq_repmsg->status : 0); \
395 struct ptlrpc_bulk_page {
396 struct list_head bp_link;
398 int bp_pageoffset; /* offset within a page */
399 struct page *bp_page;
402 #define BULK_GET_SOURCE 0
403 #define BULK_PUT_SINK 1
404 #define BULK_GET_SINK 2
405 #define BULK_PUT_SOURCE 3
407 struct ptlrpc_bulk_desc {
408 unsigned int bd_success:1; /* completed successfully */
409 unsigned int bd_network_rw:1; /* accessible to the network */
410 unsigned int bd_type:2; /* {put,get}{source,sink} */
411 unsigned int bd_registered:1; /* client side */
412 spinlock_t bd_lock; /* serialise with callback */
413 int bd_import_generation;
414 struct obd_export *bd_export;
415 struct obd_import *bd_import;
417 struct ptlrpc_request *bd_req; /* associated request */
418 wait_queue_head_t bd_waitq; /* server side only WQ */
419 int bd_iov_count; /* # entries in bd_iov */
420 int bd_max_iov; /* allocated size of bd_iov */
421 int bd_nob; /* # bytes covered */
422 int bd_nob_transferred; /* # bytes GOT/PUT */
426 struct ptlrpc_cb_id bd_cbid; /* network callback info */
427 ptl_handle_md_t bd_md_h; /* associated MD */
429 #if (!CRAY_PORTALS && defined(__KERNEL__))
430 ptl_kiov_t bd_iov[0];
432 ptl_md_iovec_t bd_iov[0];
436 struct ptlrpc_thread {
437 struct list_head t_link;
440 wait_queue_head_t t_ctl_waitq;
443 struct ptlrpc_request_buffer_desc {
444 struct list_head rqbd_list;
445 struct ptlrpc_srv_ni *rqbd_srv_ni;
446 ptl_handle_md_t rqbd_md_h;
449 struct ptlrpc_cb_id rqbd_cbid;
450 struct ptlrpc_request rqbd_req;
453 /* event queues are per-ni, because one day we may get a hardware
454 * supported NAL that delivers events asynchonously wrt kernel portals
457 struct ptlrpc_ni { /* Generic interface state */
460 ptl_handle_ni_t pni_ni_h;
461 ptl_handle_eq_t pni_eq_h;
464 struct ptlrpc_srv_ni {
465 /* Interface-specific service state */
466 struct ptlrpc_service *sni_service; /* owning service */
467 struct ptlrpc_ni *sni_ni; /* network interface */
468 struct list_head sni_active_rqbds; /* req buffers receiving */
469 struct list_head sni_active_replies; /* all the active replies */
470 int sni_nrqbd_receiving; /* # posted request buffers */
473 typedef int (*svc_handler_t)(struct ptlrpc_request *req);
475 struct ptlrpc_service {
476 struct list_head srv_list; /* chain thru all services */
477 int srv_max_req_size; /* biggest request to receive */
478 int srv_buf_size; /* size of individual buffers */
479 int srv_nbufs; /* total # req buffer descs allocated */
480 int srv_nthreads; /* # running threads */
481 int srv_n_difficult_replies; /* # 'difficult' replies */
482 int srv_n_active_reqs; /* # reqs being served */
483 int srv_rqbd_timeout; /* timeout before re-posting reqs */
485 __u32 srv_req_portal;
486 __u32 srv_rep_portal;
488 int srv_n_queued_reqs; /* # reqs waiting to be served */
489 struct list_head srv_request_queue; /* reqs waiting for service */
491 struct list_head srv_idle_rqbds; /* request buffers to be reposted */
493 atomic_t srv_outstanding_replies;
494 struct list_head srv_reply_queue; /* replies waiting for service */
496 wait_queue_head_t srv_waitq; /* all threads sleep on this */
498 struct list_head srv_threads;
499 struct obd_device *srv_obddev;
500 svc_handler_t srv_handler;
502 char *srv_name; /* only statically allocated strings here; we don't clean them */
506 struct proc_dir_entry *srv_procroot;
507 struct lprocfs_stats *srv_stats;
509 struct ptlrpc_srv_ni srv_interfaces[0];
512 static inline char *ptlrpc_peernid2str(struct ptlrpc_peer *p, char *str)
514 return (portals_nid2str(p->peer_ni->pni_number, p->peer_nid, str));
517 /* ptlrpc/events.c */
518 extern struct ptlrpc_ni ptlrpc_interfaces[];
519 extern int ptlrpc_ninterfaces;
520 extern int ptlrpc_uuid_to_peer(struct obd_uuid *uuid, struct ptlrpc_peer *peer);
521 extern void request_out_callback (ptl_event_t *ev);
522 extern void reply_in_callback(ptl_event_t *ev);
523 extern void client_bulk_callback (ptl_event_t *ev);
524 extern void request_in_callback(ptl_event_t *ev);
525 extern void reply_out_callback(ptl_event_t *ev);
526 extern void server_bulk_callback (ptl_event_t *ev);
527 extern int ptlrpc_default_nal(void);
529 /* ptlrpc/connection.c */
530 void ptlrpc_dump_connections(void);
531 void ptlrpc_readdress_connection(struct ptlrpc_connection *, struct obd_uuid *);
532 struct ptlrpc_connection *ptlrpc_get_connection(struct ptlrpc_peer *peer,
533 struct obd_uuid *uuid);
534 int ptlrpc_put_connection(struct ptlrpc_connection *c);
535 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
536 void ptlrpc_init_connection(void);
537 void ptlrpc_cleanup_connection(void);
539 /* ptlrpc/niobuf.c */
540 int ptlrpc_start_bulk_transfer(struct ptlrpc_bulk_desc *desc);
541 void ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc);
542 int ptlrpc_register_bulk(struct ptlrpc_request *req);
543 void ptlrpc_unregister_bulk (struct ptlrpc_request *req);
545 static inline int ptlrpc_bulk_active (struct ptlrpc_bulk_desc *desc)
550 spin_lock_irqsave (&desc->bd_lock, flags);
551 rc = desc->bd_network_rw;
552 spin_unlock_irqrestore (&desc->bd_lock, flags);
556 int ptlrpc_send_reply(struct ptlrpc_request *req, int);
557 int ptlrpc_reply(struct ptlrpc_request *req);
558 int ptlrpc_error(struct ptlrpc_request *req);
559 void ptlrpc_resend_req(struct ptlrpc_request *request);
560 int ptl_send_rpc(struct ptlrpc_request *request);
561 int ptlrpc_register_rqbd (struct ptlrpc_request_buffer_desc *rqbd);
563 /* ptlrpc/client.c */
564 void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
565 struct ptlrpc_client *);
566 void ptlrpc_cleanup_client(struct obd_import *imp);
567 struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid);
570 ptlrpc_client_receiving_reply (struct ptlrpc_request *req)
575 spin_lock_irqsave(&req->rq_lock, flags);
576 rc = req->rq_receiving_reply;
577 spin_unlock_irqrestore(&req->rq_lock, flags);
582 ptlrpc_client_replied (struct ptlrpc_request *req)
587 spin_lock_irqsave(&req->rq_lock, flags);
588 rc = req->rq_replied;
589 spin_unlock_irqrestore(&req->rq_lock, flags);
594 ptlrpc_wake_client_req (struct ptlrpc_request *req)
596 if (req->rq_set == NULL)
597 wake_up(&req->rq_reply_waitq);
599 wake_up(&req->rq_set->set_waitq);
602 int ptlrpc_queue_wait(struct ptlrpc_request *req);
603 int ptlrpc_replay_req(struct ptlrpc_request *req);
604 void ptlrpc_unregister_reply(struct ptlrpc_request *req);
605 void ptlrpc_restart_req(struct ptlrpc_request *req);
606 void ptlrpc_abort_inflight(struct obd_import *imp);
608 struct ptlrpc_request_set *ptlrpc_prep_set(void);
609 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
610 int ptlrpc_check_set(struct ptlrpc_request_set *set);
611 int ptlrpc_set_wait(struct ptlrpc_request_set *);
612 int ptlrpc_expired_set(void *data);
613 void ptlrpc_interrupted_set(void *data);
614 void ptlrpc_mark_interrupted(struct ptlrpc_request *req);
615 void ptlrpc_set_destroy(struct ptlrpc_request_set *);
616 void ptlrpc_set_add_req(struct ptlrpc_request_set *, struct ptlrpc_request *);
617 void ptlrpc_set_add_new_req(struct ptlrpc_request_set *,
618 struct ptlrpc_request *);
620 struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, int opcode,
621 int count, int *lengths, char **bufs);
622 void ptlrpc_free_req(struct ptlrpc_request *request);
623 void ptlrpc_req_finished(struct ptlrpc_request *request);
624 void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request);
625 struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req);
626 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp (struct ptlrpc_request *req,
627 int npages, int type, int portal);
628 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp(struct ptlrpc_request *req,
629 int npages, int type, int portal);
630 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
631 void ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
632 struct page *page, int pageoffset, int len);
633 void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
634 struct obd_import *imp);
635 __u64 ptlrpc_next_xid(void);
637 /* ptlrpc/service.c */
638 void ptlrpc_save_lock (struct ptlrpc_request *req,
639 struct lustre_handle *lock, int mode);
640 void ptlrpc_commit_replies (struct obd_device *obd);
641 void ptlrpc_schedule_difficult_reply (struct ptlrpc_reply_state *rs);
642 struct ptlrpc_service *ptlrpc_init_svc(int nbufs, int bufsize, int max_req_size,
643 int req_portal, int rep_portal,
644 svc_handler_t, char *name,
645 struct proc_dir_entry *proc_entry);
646 void ptlrpc_stop_all_threads(struct ptlrpc_service *svc);
647 int ptlrpc_start_n_threads(struct obd_device *dev, struct ptlrpc_service *svc,
648 int cnt, char *base_name);
649 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
651 int ptlrpc_unregister_service(struct ptlrpc_service *service);
652 int liblustre_check_services (void *arg);
654 struct ptlrpc_svc_data {
656 struct ptlrpc_service *svc;
657 struct ptlrpc_thread *thread;
658 struct obd_device *dev;
661 /* ptlrpc/import.c */
662 int ptlrpc_connect_import(struct obd_import *imp, char * new_uuid);
663 int ptlrpc_init_import(struct obd_import *imp);
664 int ptlrpc_disconnect_import(struct obd_import *imp);
665 int ptlrpc_import_recovery_state_machine(struct obd_import *imp);
667 /* ptlrpc/pack_generic.c */
668 int lustre_msg_swabbed(struct lustre_msg *msg);
669 int lustre_pack_request(struct ptlrpc_request *, int count, int *lens,
671 int lustre_pack_reply(struct ptlrpc_request *, int count, int *lens,
673 void lustre_free_reply_state(struct ptlrpc_reply_state *rs);
674 int lustre_msg_size(int count, int *lengths);
675 int lustre_unpack_msg(struct lustre_msg *m, int len);
676 void *lustre_msg_buf(struct lustre_msg *m, int n, int minlen);
677 char *lustre_msg_string (struct lustre_msg *m, int n, int max_len);
678 void *lustre_swab_buf(struct lustre_msg *, int n, int minlen, void *swabber);
679 void *lustre_swab_reqbuf (struct ptlrpc_request *req, int n, int minlen,
681 void *lustre_swab_repbuf (struct ptlrpc_request *req, int n, int minlen,
684 /* ldlm/ldlm_lib.c */
685 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf);
686 int client_obd_cleanup(struct obd_device * obddev, int flags);
687 int client_connect_import(struct lustre_handle *conn, struct obd_device *obd,
688 struct obd_uuid *cluuid);
689 int client_disconnect_export(struct obd_export *exp, int failover);
691 /* ptlrpc/pinger.c */
692 int ptlrpc_pinger_add_import(struct obd_import *imp);
693 int ptlrpc_pinger_del_import(struct obd_import *imp);
695 /* ptlrpc/ptlrpcd.c */
696 void ptlrpcd_wake(struct ptlrpc_request *req);
697 void ptlrpcd_add_req(struct ptlrpc_request *req);
698 int ptlrpcd_addref(void);
699 void ptlrpcd_decref(void);
701 /* ptlrpc/lproc_ptlrpc.c */
703 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev);
704 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obddev);
706 #define ptlrpc_lprocfs_register_obd(param...) do{}while(0)
707 #define ptlrpc_lprocfs_unregister_obd(param...) do{}while(0)
710 /* ptlrpc/llog_server.c */
711 int llog_origin_handle_create(struct ptlrpc_request *req);
712 int llog_origin_handle_next_block(struct ptlrpc_request *req);
713 int llog_origin_handle_read_header(struct ptlrpc_request *req);
714 int llog_origin_handle_close(struct ptlrpc_request *req);
715 int llog_origin_handle_cancel(struct ptlrpc_request *req);
716 int llog_catinfo(struct ptlrpc_request *req);
718 /* ptlrpc/llog_client.c */
719 extern struct llog_operations llog_client_ops;