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 <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)
82 #if ((PTLRPC_MAX_BRW_PAGES & (PTLRPC_MAX_BRW_PAGES - 1)) != 0)
83 #error "PTLRPC_MAX_BRW_PAGES isn't a power of two"
86 /* Size over which to OBD_VMALLOC() rather than OBD_ALLOC() service request
88 #define SVC_BUF_VMALLOC_THRESHOLD (2*PAGE_SIZE)
90 /* The following constants determine how memory is used to buffer incoming
93 * ?_NBUFS # buffers to allocate when growing the pool
94 * ?_BUFSIZE # bytes in a single request buffer
95 * ?_MAXREQSIZE # maximum request service will receive
97 * When fewer than ?_NBUFS/2 buffers are posted for receive, another chunk
98 * of ?_NBUFS is added to the pool.
100 * Messages larger than ?_MAXREQSIZE are dropped. Request buffers are
101 * considered full when less than ?_MAXREQSIZE is left in them.
104 #define LDLM_NUM_THREADS min((int)(smp_num_cpus * smp_num_cpus * 8), 64)
105 #define LDLM_NBUFS 64
106 #define LDLM_BUFSIZE (8 * 1024)
107 #define LDLM_MAXREQSIZE (5 * 1024)
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_NBUFS (64 * smp_num_cpus)
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)
130 #define OST_MAX_THREADS 36UL
131 #define OST_NUM_THREADS max(min_t(unsigned long, num_physpages / 8192, \
132 OST_MAX_THREADS), 2UL)
133 #define OST_NBUFS (64 * smp_num_cpus)
134 #define OST_BUFSIZE (8 * 1024)
135 /* OST_MAXREQSIZE ~= 1640 bytes =
136 * lustre_msg + obdo + 16 * obd_ioobj + 64 * niobuf_remote
138 * - single object with 16 pages is 512 bytes
139 * - OST_MAXREQSIZE must be at least 1 page of cookies plus some spillover
141 #define OST_MAXREQSIZE (5 * 1024)
143 #define PTLBD_NUM_THREADS 4
144 #define PTLBD_NBUFS 64
145 #define PTLBD_BUFSIZE (32 * 1024)
146 #define PTLBD_MAXREQSIZE 1024
149 ptl_process_id_t peer_id;
150 struct ptlrpc_ni *peer_ni;
153 struct ptlrpc_connection {
154 struct list_head c_link;
155 struct ptlrpc_peer c_peer;
156 struct obd_uuid c_remote_uuid;
160 struct ptlrpc_client {
161 __u32 cli_request_portal;
162 __u32 cli_reply_portal;
166 /* state flags of requests */
167 /* XXX only ones left are those used by the bulk descs as well! */
168 #define PTL_RPC_FL_INTR (1 << 0) /* reply wait was interrupted by user */
169 #define PTL_RPC_FL_TIMEOUT (1 << 7) /* request timed out waiting for reply */
171 #define REQ_MAX_ACK_LOCKS 8
173 #define SWAB_PARANOIA 1
175 /* unpacking: assert idx not unpacked already */
176 #define LASSERT_REQSWAB(rq, idx) \
178 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8); \
179 LASSERT (((rq)->rq_req_swab_mask & (1 << (idx))) == 0); \
180 (rq)->rq_req_swab_mask |= (1 << (idx)); \
183 #define LASSERT_REPSWAB(rq, idx) \
185 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8); \
186 LASSERT (((rq)->rq_rep_swab_mask & (1 << (idx))) == 0); \
187 (rq)->rq_rep_swab_mask |= (1 << (idx)); \
190 /* just looking: assert idx already unpacked */
191 #define LASSERT_REQSWABBED(rq, idx) \
192 LASSERT ((idx) < sizeof ((rq)->rq_req_swab_mask) * 8 && \
193 ((rq)->rq_req_swab_mask & (1 << (idx))) != 0)
195 #define LASSERT_REPSWABBED(rq, idx) \
196 LASSERT ((idx) < sizeof ((rq)->rq_rep_swab_mask) * 8 && \
197 ((rq)->rq_rep_swab_mask & (1 << (idx))) != 0)
199 #define LASSERT_REQSWAB(rq, idx)
200 #define LASSERT_REPSWAB(rq, idx)
201 #define LASSERT_REQSWABBED(rq, idx)
202 #define LASSERT_REPSWABBED(rq, idx)
205 union ptlrpc_async_args {
206 /* Scratchpad for passing args to completion interpreter. Users
207 * cast to the struct of their choosing, and LASSERT that this is
208 * big enough. For _tons_ of context, OBD_ALLOC a struct and store
209 * a pointer to it here. The pointer_arg ensures this struct is at
210 * least big enough for that. */
211 void *pointer_arg[9];
215 struct ptlrpc_request_set;
216 typedef int (*set_interpreter_func)(struct ptlrpc_request_set *, void *, int);
218 struct ptlrpc_request_set {
219 int set_remaining; /* # uncompleted requests */
220 wait_queue_head_t set_waitq;
221 wait_queue_head_t *set_wakeup_ptr;
222 struct list_head set_requests;
223 set_interpreter_func set_interpret; /* completion callback */
224 void *set_arg; /* completion context */
225 /* locked so that any old caller can communicate requests to
226 * the set holder who can then fold them into the lock-free set */
227 spinlock_t set_new_req_lock;
228 struct list_head set_new_requests;
231 struct ptlrpc_bulk_desc;
234 * ptlrpc callback & work item stuff
236 struct ptlrpc_cb_id {
237 void (*cbid_fn)(ptl_event_t *ev); /* specific callback fn */
238 void *cbid_arg; /* additional arg */
241 #define RS_MAX_LOCKS 4
244 struct ptlrpc_reply_state {
245 struct ptlrpc_cb_id rs_cb_id;
246 struct list_head rs_list;
247 struct list_head rs_exp_list;
248 struct list_head rs_obd_list;
250 struct list_head rs_debug_list;
252 /* updates to following flag serialised by srv_request_lock */
253 unsigned int rs_difficult:1; /* ACK/commit stuff */
254 unsigned int rs_scheduled:1; /* being handled? */
255 unsigned int rs_scheduled_ever:1; /* any schedule attempts? */
256 unsigned int rs_handled:1; /* been handled yet? */
257 unsigned int rs_on_net:1; /* reply_out_callback pending? */
262 struct obd_export *rs_export;
263 struct ptlrpc_srv_ni *rs_srv_ni;
264 ptl_handle_md_t rs_md_h;
265 atomic_t rs_refcount;
267 /* locks awaiting client reply ACK */
269 struct lustre_handle rs_locks[RS_MAX_LOCKS];
270 ldlm_mode_t rs_modes[RS_MAX_LOCKS];
271 /* last member: variable sized reply message */
272 struct lustre_msg rs_msg;
275 struct ptlrpc_request {
276 int rq_type; /* one of PTL_RPC_MSG_* */
277 struct list_head rq_list;
278 struct list_head rq_history_list; /* server-side history */
279 __u64 rq_history_seq; /* history sequence # */
282 /* client-side flags */
283 unsigned int rq_intr:1, rq_replied:1, rq_err:1,
284 rq_timedout:1, rq_resend:1, rq_restart:1, rq_replay:1,
285 rq_no_resend:1, rq_waiting:1, rq_receiving_reply:1,
286 rq_no_delay:1, rq_net_err:1;
288 /* client-side refcount for SENT race */
289 atomic_t rq_refcount;
291 int rq_request_portal; /* XXX FIXME bug 249 */
292 int rq_reply_portal; /* XXX FIXME bug 249 */
294 /* client-side # reply bytes actually received */
298 struct lustre_msg *rq_reqmsg;
300 int rq_timeout; /* seconds */
302 struct lustre_msg *rq_repmsg;
305 struct list_head rq_replay_list;
308 __u32 rq_req_swab_mask;
309 __u32 rq_rep_swab_mask;
312 int rq_import_generation;
313 enum lustre_imp_state rq_send_state;
315 /* client+server request */
316 ptl_handle_md_t rq_req_md_h;
317 struct ptlrpc_cb_id rq_req_cbid;
320 struct timeval rq_arrival_time; /* request arrival time */
321 struct ptlrpc_reply_state *rq_reply_state; /* separated reply state */
322 struct ptlrpc_request_buffer_desc *rq_rqbd; /* incoming request buffer */
324 /* client-only incoming reply */
325 ptl_handle_md_t rq_reply_md_h;
326 wait_queue_head_t rq_reply_waitq;
327 struct ptlrpc_cb_id rq_reply_cbid;
329 struct ptlrpc_peer rq_peer; /* XXX see service.c can this be factored away? */
330 char rq_peerstr[PTL_NALFMT_SIZE];
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 request sent, seconds */
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 static inline const char *
357 ptlrpc_rqphase2str(struct ptlrpc_request *req)
359 switch (req->rq_phase) {
366 case RQ_PHASE_INTERPRET:
368 case RQ_PHASE_COMPLETE:
375 /* Spare the preprocessor, spoil the bugs. */
376 #define FLAG(field, str) (field ? str : "")
378 #define DEBUG_REQ_FLAGS(req) \
379 ptlrpc_rqphase2str(req), \
380 FLAG(req->rq_intr, "I"), FLAG(req->rq_replied, "R"), \
381 FLAG(req->rq_err, "E"), \
382 FLAG(req->rq_timedout, "X") /* eXpired */, FLAG(req->rq_resend, "S"), \
383 FLAG(req->rq_restart, "T"), FLAG(req->rq_replay, "P"), \
384 FLAG(req->rq_no_resend, "N"), \
385 FLAG(req->rq_waiting, "W")
387 #define REQ_FLAGS_FMT "%s:%s%s%s%s%s%s%s%s%s"
389 #define DEBUG_REQ(level, req, fmt, args...) \
391 CDEBUG(level, "@@@ " fmt \
392 " req@%p x"LPD64"/t"LPD64" o%d->%s@%s:%d lens %d/%d ref %d fl " \
393 REQ_FLAGS_FMT"/%x/%x rc %d/%d\n" , ## args, req, req->rq_xid, \
395 req->rq_reqmsg ? req->rq_reqmsg->opc : -1, \
396 req->rq_import ? (char *)req->rq_import->imp_target_uuid.uuid : "<?>", \
398 (char *)req->rq_import->imp_connection->c_remote_uuid.uuid : "<?>", \
399 (req->rq_import && req->rq_import->imp_client) ? \
400 req->rq_import->imp_client->cli_request_portal : -1, \
401 req->rq_reqlen, req->rq_replen, \
402 atomic_read(&req->rq_refcount), \
403 DEBUG_REQ_FLAGS(req), \
404 req->rq_reqmsg ? req->rq_reqmsg->flags : 0, \
405 req->rq_repmsg ? req->rq_repmsg->flags : 0, \
406 req->rq_status, req->rq_repmsg ? req->rq_repmsg->status : 0); \
409 struct ptlrpc_bulk_page {
410 struct list_head bp_link;
412 int bp_pageoffset; /* offset within a page */
413 struct page *bp_page;
416 #define BULK_GET_SOURCE 0
417 #define BULK_PUT_SINK 1
418 #define BULK_GET_SINK 2
419 #define BULK_PUT_SOURCE 3
421 struct ptlrpc_bulk_desc {
422 unsigned int bd_success:1; /* completed successfully */
423 unsigned int bd_network_rw:1; /* accessible to the network */
424 unsigned int bd_type:2; /* {put,get}{source,sink} */
425 unsigned int bd_registered:1; /* client side */
426 spinlock_t bd_lock; /* serialise with callback */
427 int bd_import_generation;
428 struct obd_export *bd_export;
429 struct obd_import *bd_import;
431 struct ptlrpc_request *bd_req; /* associated request */
432 wait_queue_head_t bd_waitq; /* server side only WQ */
433 int bd_iov_count; /* # entries in bd_iov */
434 int bd_max_iov; /* allocated size of bd_iov */
435 int bd_nob; /* # bytes covered */
436 int bd_nob_transferred; /* # bytes GOT/PUT */
440 struct ptlrpc_cb_id bd_cbid; /* network callback info */
441 ptl_handle_md_t bd_md_h; /* associated MD */
443 #if (!CRAY_PORTALS && defined(__KERNEL__))
444 ptl_kiov_t bd_iov[0];
446 ptl_md_iovec_t bd_iov[0];
450 struct ptlrpc_thread {
451 struct list_head t_link;
454 wait_queue_head_t t_ctl_waitq;
457 struct ptlrpc_request_buffer_desc {
458 struct list_head rqbd_list;
459 struct list_head rqbd_reqs;
460 struct ptlrpc_srv_ni *rqbd_srv_ni;
461 ptl_handle_md_t rqbd_md_h;
464 struct ptlrpc_cb_id rqbd_cbid;
465 struct ptlrpc_request rqbd_req;
468 /* event queues are per-ni, because one day we may get a hardware
469 * supported NAL that delivers events asynchonously wrt kernel portals
472 struct ptlrpc_ni { /* Generic interface state */
475 ptl_handle_ni_t pni_ni_h;
476 ptl_handle_eq_t pni_eq_h;
479 struct ptlrpc_srv_ni {
480 /* Interface-specific service state */
481 struct ptlrpc_service *sni_service; /* owning service */
482 struct ptlrpc_ni *sni_ni; /* network interface */
483 struct list_head sni_active_rqbds; /* req buffers receiving */
484 struct list_head sni_active_replies; /* all the active replies */
485 int sni_nrqbd_receiving; /* # posted request buffers */
488 typedef int (*svc_handler_t)(struct ptlrpc_request *req);
489 typedef void (*svcreq_printfn_t)(void *, struct ptlrpc_request *);
491 struct ptlrpc_service {
492 struct list_head srv_list; /* chain thru all services */
493 int srv_max_req_size; /* biggest request to receive */
494 int srv_buf_size; /* size of individual buffers */
495 int srv_nbuf_per_group; /* # buffers to allocate in 1 group */
496 int srv_nbufs; /* total # req buffer descs allocated */
497 int srv_nthreads; /* # running threads */
498 int srv_n_difficult_replies; /* # 'difficult' replies */
499 int srv_n_active_reqs; /* # reqs being served */
500 int srv_rqbd_timeout; /* timeout before re-posting reqs */
501 int srv_watchdog_timeout; /* soft watchdog timeout, in ms */
503 __u32 srv_req_portal;
504 __u32 srv_rep_portal;
506 int srv_n_queued_reqs; /* # reqs waiting to be served */
507 struct list_head srv_request_queue; /* reqs waiting for service */
509 struct list_head srv_request_history; /* request history */
510 __u64 srv_request_seq; /* next request sequence # */
511 __u64 srv_request_max_cull_seq; /* highest seq culled from history */
512 svcreq_printfn_t srv_request_history_print_fn; /* service-specific print fn */
514 struct list_head srv_idle_rqbds; /* request buffers to be reposted */
515 struct list_head srv_history_rqbds; /* request buffer history */
516 int srv_n_history_rqbds; /* # request buffers in history */
517 int srv_max_history_rqbds; /* max # request buffers in history */
519 atomic_t srv_outstanding_replies;
520 struct list_head srv_reply_queue; /* replies waiting for service */
522 wait_queue_head_t srv_waitq; /* all threads sleep on this */
524 struct list_head srv_threads;
525 struct obd_device *srv_obddev;
526 svc_handler_t srv_handler;
528 char *srv_name; /* only statically allocated strings here; we don't clean them */
532 struct proc_dir_entry *srv_procroot;
533 struct lprocfs_stats *srv_stats;
535 struct ptlrpc_srv_ni srv_interfaces[0];
538 static inline char *ptlrpc_peernid2str(struct ptlrpc_peer *p, char *str)
540 LASSERT(p->peer_ni != NULL);
541 return (portals_nid2str(p->peer_ni->pni_number, p->peer_id.nid, str));
544 static inline char *ptlrpc_id2str(struct ptlrpc_peer *p, char *str)
546 LASSERT(p->peer_ni != NULL);
547 return (portals_id2str(p->peer_ni->pni_number, p->peer_id, str));
550 /* ptlrpc/events.c */
551 extern struct ptlrpc_ni ptlrpc_interfaces[];
552 extern int ptlrpc_ninterfaces;
553 extern int ptlrpc_uuid_to_peer(struct obd_uuid *uuid, struct ptlrpc_peer *peer);
554 extern void request_out_callback (ptl_event_t *ev);
555 extern void reply_in_callback(ptl_event_t *ev);
556 extern void client_bulk_callback (ptl_event_t *ev);
557 extern void request_in_callback(ptl_event_t *ev);
558 extern void reply_out_callback(ptl_event_t *ev);
559 extern void server_bulk_callback (ptl_event_t *ev);
560 extern int ptlrpc_default_nal(void);
562 /* ptlrpc/connection.c */
563 void ptlrpc_dump_connections(void);
564 void ptlrpc_readdress_connection(struct ptlrpc_connection *, struct obd_uuid *);
565 struct ptlrpc_connection *ptlrpc_get_connection(struct ptlrpc_peer *peer,
566 struct obd_uuid *uuid);
567 int ptlrpc_put_connection(struct ptlrpc_connection *c);
568 struct ptlrpc_connection *ptlrpc_connection_addref(struct ptlrpc_connection *);
569 void ptlrpc_init_connection(void);
570 void ptlrpc_cleanup_connection(void);
571 extern ptl_pid_t ptl_get_pid(void);
573 /* ptlrpc/niobuf.c */
574 int ptlrpc_start_bulk_transfer(struct ptlrpc_bulk_desc *desc);
575 void ptlrpc_abort_bulk(struct ptlrpc_bulk_desc *desc);
576 int ptlrpc_register_bulk(struct ptlrpc_request *req);
577 void ptlrpc_unregister_bulk (struct ptlrpc_request *req);
579 static inline int ptlrpc_bulk_active (struct ptlrpc_bulk_desc *desc)
584 spin_lock_irqsave (&desc->bd_lock, flags);
585 rc = desc->bd_network_rw;
586 spin_unlock_irqrestore (&desc->bd_lock, flags);
590 int ptlrpc_send_reply(struct ptlrpc_request *req, int);
591 int ptlrpc_reply(struct ptlrpc_request *req);
592 int ptlrpc_error(struct ptlrpc_request *req);
593 void ptlrpc_resend_req(struct ptlrpc_request *request);
594 int ptl_send_rpc(struct ptlrpc_request *request);
595 int ptlrpc_register_rqbd (struct ptlrpc_request_buffer_desc *rqbd);
597 /* ptlrpc/client.c */
598 void ptlrpc_init_client(int req_portal, int rep_portal, char *name,
599 struct ptlrpc_client *);
600 void ptlrpc_cleanup_client(struct obd_import *imp);
601 struct ptlrpc_connection *ptlrpc_uuid_to_connection(struct obd_uuid *uuid);
604 ptlrpc_client_receiving_reply (struct ptlrpc_request *req)
609 spin_lock_irqsave(&req->rq_lock, flags);
610 rc = req->rq_receiving_reply;
611 spin_unlock_irqrestore(&req->rq_lock, flags);
616 ptlrpc_client_replied (struct ptlrpc_request *req)
621 spin_lock_irqsave(&req->rq_lock, flags);
622 rc = req->rq_replied;
623 spin_unlock_irqrestore(&req->rq_lock, flags);
628 ptlrpc_wake_client_req (struct ptlrpc_request *req)
630 if (req->rq_set == NULL)
631 wake_up(&req->rq_reply_waitq);
633 wake_up(&req->rq_set->set_waitq);
636 int ptlrpc_queue_wait(struct ptlrpc_request *req);
637 int ptlrpc_replay_req(struct ptlrpc_request *req);
638 void ptlrpc_unregister_reply(struct ptlrpc_request *req);
639 void ptlrpc_restart_req(struct ptlrpc_request *req);
640 void ptlrpc_abort_inflight(struct obd_import *imp);
642 struct ptlrpc_request_set *ptlrpc_prep_set(void);
643 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
644 int ptlrpc_check_set(struct ptlrpc_request_set *set);
645 int ptlrpc_set_wait(struct ptlrpc_request_set *);
646 int ptlrpc_expired_set(void *data);
647 void ptlrpc_interrupted_set(void *data);
648 void ptlrpc_mark_interrupted(struct ptlrpc_request *req);
649 void ptlrpc_set_destroy(struct ptlrpc_request_set *);
650 void ptlrpc_set_add_req(struct ptlrpc_request_set *, struct ptlrpc_request *);
651 void ptlrpc_set_add_new_req(struct ptlrpc_request_set *,
652 struct ptlrpc_request *);
654 struct ptlrpc_request *ptlrpc_prep_req(struct obd_import *imp, int opcode,
655 int count, int *lengths, char **bufs);
656 void ptlrpc_free_req(struct ptlrpc_request *request);
657 void ptlrpc_req_finished(struct ptlrpc_request *request);
658 void ptlrpc_req_finished_with_imp_lock(struct ptlrpc_request *request);
659 struct ptlrpc_request *ptlrpc_request_addref(struct ptlrpc_request *req);
660 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_imp (struct ptlrpc_request *req,
661 int npages, int type, int portal);
662 struct ptlrpc_bulk_desc *ptlrpc_prep_bulk_exp(struct ptlrpc_request *req,
663 int npages, int type, int portal);
664 void ptlrpc_free_bulk(struct ptlrpc_bulk_desc *bulk);
665 void ptlrpc_prep_bulk_page(struct ptlrpc_bulk_desc *desc,
666 struct page *page, int pageoffset, int len);
667 void ptlrpc_retain_replayable_request(struct ptlrpc_request *req,
668 struct obd_import *imp);
669 __u64 ptlrpc_next_xid(void);
670 __u64 ptlrpc_sample_next_xid(void);
671 __u64 ptlrpc_req_xid(struct ptlrpc_request *request);
673 /* ptlrpc/service.c */
674 void ptlrpc_save_lock (struct ptlrpc_request *req,
675 struct lustre_handle *lock, int mode);
676 void ptlrpc_commit_replies (struct obd_device *obd);
677 void ptlrpc_schedule_difficult_reply (struct ptlrpc_reply_state *rs);
678 struct ptlrpc_service *ptlrpc_init_svc(int nbufs, int bufsize, int max_req_size,
679 int req_portal, int rep_portal,
680 int watchdog_timeout, /* in ms */
681 svc_handler_t, char *name,
682 struct proc_dir_entry *proc_entry,
684 void ptlrpc_stop_all_threads(struct ptlrpc_service *svc);
685 int ptlrpc_start_n_threads(struct obd_device *dev, struct ptlrpc_service *svc,
686 int cnt, char *base_name);
687 int ptlrpc_start_thread(struct obd_device *dev, struct ptlrpc_service *svc,
689 int ptlrpc_unregister_service(struct ptlrpc_service *service);
690 int liblustre_check_services (void *arg);
691 void ptlrpc_daemonize(void);
694 struct ptlrpc_svc_data {
696 struct ptlrpc_service *svc;
697 struct ptlrpc_thread *thread;
698 struct obd_device *dev;
701 /* ptlrpc/import.c */
702 int ptlrpc_connect_import(struct obd_import *imp, char * new_uuid);
703 int ptlrpc_init_import(struct obd_import *imp);
704 int ptlrpc_disconnect_import(struct obd_import *imp);
705 int ptlrpc_import_recovery_state_machine(struct obd_import *imp);
707 /* ptlrpc/pack_generic.c */
708 int lustre_msg_swabbed(struct lustre_msg *msg);
709 int lustre_pack_request(struct ptlrpc_request *, int count, int *lens,
711 int lustre_pack_reply(struct ptlrpc_request *, int count, int *lens,
713 void lustre_free_reply_state(struct ptlrpc_reply_state *rs);
714 int lustre_msg_size(int count, int *lengths);
715 int lustre_unpack_msg(struct lustre_msg *m, int len);
716 void *lustre_msg_buf(struct lustre_msg *m, int n, int minlen);
717 char *lustre_msg_string (struct lustre_msg *m, int n, int max_len);
718 void *lustre_swab_buf(struct lustre_msg *, int n, int minlen, void *swabber);
719 void *lustre_swab_reqbuf (struct ptlrpc_request *req, int n, int minlen,
721 void *lustre_swab_repbuf (struct ptlrpc_request *req, int n, int minlen,
725 ptlrpc_rs_addref(struct ptlrpc_reply_state *rs)
727 LASSERT(atomic_read(&rs->rs_refcount) > 0);
728 atomic_inc(&rs->rs_refcount);
732 ptlrpc_rs_decref(struct ptlrpc_reply_state *rs)
734 LASSERT(atomic_read(&rs->rs_refcount) > 0);
735 if (atomic_dec_and_test(&rs->rs_refcount))
736 lustre_free_reply_state(rs);
739 /* ldlm/ldlm_lib.c */
740 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf);
741 int client_obd_cleanup(struct obd_device * obddev);
742 int client_connect_import(struct lustre_handle *conn, struct obd_device *obd,
743 struct obd_uuid *cluuid);
744 int client_disconnect_export(struct obd_export *exp);
746 /* ptlrpc/pinger.c */
747 int ptlrpc_pinger_add_import(struct obd_import *imp);
748 int ptlrpc_pinger_del_import(struct obd_import *imp);
750 /* ptlrpc/ptlrpcd.c */
751 void ptlrpcd_wake(struct ptlrpc_request *req);
752 void ptlrpcd_add_req(struct ptlrpc_request *req);
753 int ptlrpcd_addref(void);
754 void ptlrpcd_decref(void);
756 /* ptlrpc/lproc_ptlrpc.c */
758 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev);
759 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obddev);
761 #define ptlrpc_lprocfs_register_obd(param...) do{}while(0)
762 #define ptlrpc_lprocfs_unregister_obd(param...) do{}while(0)
765 /* ptlrpc/llog_server.c */
766 int llog_origin_handle_create(struct ptlrpc_request *req);
767 int llog_origin_handle_next_block(struct ptlrpc_request *req);
768 int llog_origin_handle_read_header(struct ptlrpc_request *req);
769 int llog_origin_handle_close(struct ptlrpc_request *req);
770 int llog_origin_handle_cancel(struct ptlrpc_request *req);
771 int llog_catinfo(struct ptlrpc_request *req);
773 /* ptlrpc/llog_client.c */
774 extern struct llog_operations llog_client_ops;