4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 /* Intramodule declarations for ptlrpc. */
35 #ifndef PTLRPC_INTERNAL_H
36 #define PTLRPC_INTERNAL_H
38 #include "../ldlm/ldlm_internal.h"
40 struct ldlm_namespace;
43 struct ptlrpc_request_set;
44 extern int test_req_buffer_pressure;
45 extern struct list_head ptlrpc_all_services;
46 extern struct mutex ptlrpc_all_services_mutex;
47 extern struct ptlrpc_nrs_pol_conf nrs_conf_fifo;
49 #ifdef HAVE_SERVER_SUPPORT
50 extern struct ptlrpc_nrs_pol_conf nrs_conf_crrn;
51 extern struct ptlrpc_nrs_pol_conf nrs_conf_orr;
52 extern struct ptlrpc_nrs_pol_conf nrs_conf_trr;
53 extern struct ptlrpc_nrs_pol_conf nrs_conf_tbf;
54 extern struct ptlrpc_nrs_pol_conf nrs_conf_delay;
55 #endif /* HAVE_SERVER_SUPPORT */
61 extern struct nrs_core nrs_core;
63 extern struct mutex ptlrpcd_mutex;
64 extern struct mutex pinger_mutex;
66 int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
68 int ptlrpcd_start(struct ptlrpcd_ctl *pc);
71 void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
72 unsigned int service_time);
73 struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned npages, unsigned max_brw,
74 enum ptlrpc_bulk_op_type type,
76 const struct ptlrpc_bulk_frag_ops
78 int ptlrpc_request_cache_init(void);
79 void ptlrpc_request_cache_fini(void);
80 struct ptlrpc_request *ptlrpc_request_cache_alloc(gfp_t flags);
81 void ptlrpc_request_cache_free(struct ptlrpc_request *req);
82 void ptlrpc_init_xid(void);
83 void ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
84 struct ptlrpc_request *req);
85 int ptlrpc_expired_set(void *data);
86 time64_t ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
87 void ptlrpc_resend_req(struct ptlrpc_request *request);
88 void ptlrpc_set_bulk_mbits(struct ptlrpc_request *req);
89 void ptlrpc_assign_next_xid_nolock(struct ptlrpc_request *req);
90 __u64 ptlrpc_known_replied_xid(struct obd_import *imp);
91 void ptlrpc_add_unreplied(struct ptlrpc_request *req);
94 int ptlrpc_init_portals(void);
95 void ptlrpc_exit_portals(void);
97 void ptlrpc_request_handle_notconn(struct ptlrpc_request *);
98 void lustre_assert_wire_constants(void);
99 int ptlrpc_import_in_recovery(struct obd_import *imp);
100 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
101 void ptlrpc_handle_failed_import(struct obd_import *imp);
102 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
103 void ptlrpc_initiate_recovery(struct obd_import *imp);
105 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
106 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);
108 int ptlrpc_sysfs_register_service(struct kset *parent,
109 struct ptlrpc_service *svc);
110 void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc);
112 #ifdef CONFIG_PROC_FS
113 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *proc_entry,
114 struct ptlrpc_service *svc);
115 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
116 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);
117 void ptlrpc_lprocfs_do_request_stat (struct ptlrpc_request *req,
118 long q_usec, long work_usec);
120 #define ptlrpc_lprocfs_register_service(params...) do{}while(0)
121 #define ptlrpc_lprocfs_unregister_service(params...) do{}while(0)
122 #define ptlrpc_lprocfs_rpc_sent(params...) do{}while(0)
123 #define ptlrpc_lprocfs_do_request_stat(params...) do{}while(0)
124 #endif /* CONFIG_PROC_FS */
131 * Holds NRS core fields.
135 * Protects nrs_core::nrs_policies, serializes external policy
136 * registration/unregistration, and NRS core lprocfs operations.
138 struct mutex nrs_mutex;
140 * List of all policy descriptors registered with NRS core; protected
141 * by nrs_core::nrs_mutex.
143 struct list_head nrs_policies;
146 int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
147 void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);
149 void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
150 struct ptlrpc_request *req, bool hp);
151 void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
152 void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
153 void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
154 struct ptlrpc_request *req, bool hp);
156 struct ptlrpc_request *
157 ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
158 bool peek, bool force);
160 static inline struct ptlrpc_request *
161 ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
164 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
167 static inline struct ptlrpc_request *
168 ptlrpc_nrs_req_peek_nolock(struct ptlrpc_service_part *svcpt, bool hp)
170 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, true, false);
173 void ptlrpc_nrs_req_del_nolock(struct ptlrpc_request *req);
174 bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);
175 bool ptlrpc_nrs_req_throttling_nolock(struct ptlrpc_service_part *svcpt,
178 int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
179 enum ptlrpc_nrs_queue_type queue, char *name,
180 enum ptlrpc_nrs_ctl opc, bool single, void *arg);
182 int ptlrpc_nrs_init(void);
183 void ptlrpc_nrs_fini(void);
185 static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
187 return svcpt->scp_nrs_hp != NULL;
190 static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
193 * If the first service partition has an HP NRS head, all service
196 return nrs_svcpt_has_hp(svc->srv_parts[0]);
200 struct ptlrpc_nrs *nrs_svcpt2nrs(struct ptlrpc_service_part *svcpt, bool hp)
202 LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
203 return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
206 static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
208 return policy->pol_nrs->nrs_svcpt->scp_cpt;
212 struct ptlrpc_service *nrs_pol2svc(struct ptlrpc_nrs_policy *policy)
214 return policy->pol_nrs->nrs_svcpt->scp_service;
218 struct ptlrpc_service_part *nrs_pol2svcpt(struct ptlrpc_nrs_policy *policy)
220 return policy->pol_nrs->nrs_svcpt;
224 struct cfs_cpt_table *nrs_pol2cptab(struct ptlrpc_nrs_policy *policy)
226 return nrs_pol2svc(policy)->srv_cptable;
229 static inline struct ptlrpc_nrs_resource *
230 nrs_request_resource(struct ptlrpc_nrs_request *nrq)
232 LASSERT(nrq->nr_initialized);
233 LASSERT(!nrq->nr_finalized);
235 return nrq->nr_res_ptrs[nrq->nr_res_idx];
239 struct ptlrpc_nrs_policy *nrs_request_policy(struct ptlrpc_nrs_request *nrq)
241 return nrs_request_resource(nrq)->res_policy;
244 #define NRS_LPROCFS_QUANTUM_NAME_REG "reg_quantum:"
245 #define NRS_LPROCFS_QUANTUM_NAME_HP "hp_quantum:"
248 * the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
250 #define LPROCFS_NRS_QUANTUM_MAX 65535
253 * Max valid command string is the size of the labels, plus "65535" twice, plus
254 * a separating space character.
256 #define LPROCFS_NRS_WR_QUANTUM_MAX_CMD \
257 sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " " \
258 NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))
260 /* recovd_thread.c */
262 int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);
265 void ptlrpc_fill_bulk_md(struct lnet_md *md, struct ptlrpc_bulk_desc *desc,
269 struct ptlrpc_reply_state *
270 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt);
271 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);
274 int ptlrpc_start_pinger(void);
275 int ptlrpc_stop_pinger(void);
276 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
277 void ptlrpc_pinger_commit_expected(struct obd_import *imp);
278 void ptlrpc_pinger_wake_up(void);
279 void ptlrpc_ping_import_soon(struct obd_import *imp);
280 int ping_evictor_wake(struct obd_export *exp);
283 int sptlrpc_null_init(void);
284 void sptlrpc_null_fini(void);
287 int sptlrpc_plain_init(void);
288 void sptlrpc_plain_fini(void);
291 int sptlrpc_enc_pool_init(void);
292 void sptlrpc_enc_pool_fini(void);
293 int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v);
296 int sptlrpc_lproc_init(void);
297 void sptlrpc_lproc_fini(void);
300 int sptlrpc_gc_init(void);
301 void sptlrpc_gc_fini(void);
304 void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
305 enum lustre_sec_part to,
306 struct obd_uuid *target,
308 struct sptlrpc_flavor *sf);
309 int sptlrpc_conf_init(void);
310 void sptlrpc_conf_fini(void);
313 int sptlrpc_init(void);
314 void sptlrpc_fini(void);
317 __u32 __req_capsule_offset(const struct req_capsule *pill,
318 const struct req_msg_field *field,
319 enum req_location loc);
321 static inline bool ptlrpc_recoverable_error(int rc)
323 return (rc == -ENOTCONN || rc == -ENODEV);
326 #ifdef HAVE_SERVER_SUPPORT
327 int tgt_mod_init(void);
328 void tgt_mod_exit(void);
329 int nodemap_mod_init(void);
330 void nodemap_mod_exit(void);
331 #else /* HAVE_SERVER_SUPPORT */
332 static inline int tgt_mod_init(void)
337 static inline void tgt_mod_exit(void)
342 static inline int nodemap_mod_init(void)
347 static inline void nodemap_mod_exit(void)
351 #endif /* !HAVE_SERVER_SUPPORT */
353 static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
355 if (atomic_dec_and_test(&set->set_refcount))
359 /** initialise ptlrpc common fields */
360 static inline void ptlrpc_req_comm_init(struct ptlrpc_request *req)
362 spin_lock_init(&req->rq_lock);
363 spin_lock_init(&req->rq_early_free_lock);
364 atomic_set(&req->rq_refcount, 1);
365 INIT_LIST_HEAD(&req->rq_list);
366 INIT_LIST_HEAD(&req->rq_replay_list);
369 /** initialise client side ptlrpc request */
370 static inline void ptlrpc_cli_req_init(struct ptlrpc_request *req)
372 struct ptlrpc_cli_req *cr = &req->rq_cli;
374 ptlrpc_req_comm_init(req);
376 req->rq_receiving_reply = 0;
377 req->rq_req_unlinked = req->rq_reply_unlinked = 1;
379 INIT_LIST_HEAD(&cr->cr_set_chain);
380 INIT_LIST_HEAD(&cr->cr_ctx_chain);
381 INIT_LIST_HEAD(&cr->cr_unreplied_list);
382 init_waitqueue_head(&cr->cr_reply_waitq);
383 init_waitqueue_head(&cr->cr_set_waitq);
386 /** initialise server side ptlrpc request */
387 static inline void ptlrpc_srv_req_init(struct ptlrpc_request *req)
389 struct ptlrpc_srv_req *sr = &req->rq_srv;
391 ptlrpc_req_comm_init(req);
393 INIT_LIST_HEAD(&sr->sr_exp_list);
394 INIT_LIST_HEAD(&sr->sr_timed_list);
395 INIT_LIST_HEAD(&sr->sr_hist_list);
398 static inline bool ptlrpc_req_is_connect(struct ptlrpc_request *req)
400 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CONNECT ||
401 lustre_msg_get_opc(req->rq_reqmsg) == OST_CONNECT ||
402 lustre_msg_get_opc(req->rq_reqmsg) == MGS_CONNECT)
408 static inline bool ptlrpc_req_is_disconnect(struct ptlrpc_request *req)
410 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_DISCONNECT ||
411 lustre_msg_get_opc(req->rq_reqmsg) == OST_DISCONNECT ||
412 lustre_msg_get_opc(req->rq_reqmsg) == MGS_DISCONNECT)
418 #endif /* PTLRPC_INTERNAL_H */