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13 * General Public License version 2 for more details (a copy is included
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 /* Intramodule declarations for ptlrpc. */
39 #ifndef PTLRPC_INTERNAL_H
40 #define PTLRPC_INTERNAL_H
42 #include "../ldlm/ldlm_internal.h"
44 struct ldlm_namespace;
47 struct ptlrpc_request_set;
48 extern int test_req_buffer_pressure;
49 extern struct list_head ptlrpc_all_services;
50 extern struct mutex ptlrpc_all_services_mutex;
51 extern struct ptlrpc_nrs_pol_conf nrs_conf_fifo;
53 #ifdef HAVE_SERVER_SUPPORT
54 extern struct ptlrpc_nrs_pol_conf nrs_conf_crrn;
55 extern struct ptlrpc_nrs_pol_conf nrs_conf_orr;
56 extern struct ptlrpc_nrs_pol_conf nrs_conf_trr;
57 extern struct ptlrpc_nrs_pol_conf nrs_conf_tbf;
58 #endif /* HAVE_SERVER_SUPPORT */
64 extern struct nrs_core nrs_core;
66 extern struct mutex ptlrpcd_mutex;
67 extern struct mutex pinger_mutex;
69 int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
71 int ptlrpcd_start(int index, int max, const char *name, struct ptlrpcd_ctl *pc);
74 void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
75 unsigned int service_time);
76 struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned npages, unsigned max_brw,
77 unsigned type, unsigned portal);
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 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *);
87 void ptlrpc_resend_req(struct ptlrpc_request *request);
90 int ptlrpc_init_portals(void);
91 void ptlrpc_exit_portals(void);
93 void ptlrpc_request_handle_notconn(struct ptlrpc_request *);
94 void lustre_assert_wire_constants(void);
95 int ptlrpc_import_in_recovery(struct obd_import *imp);
96 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
97 void ptlrpc_handle_failed_import(struct obd_import *imp);
98 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
99 void ptlrpc_initiate_recovery(struct obd_import *imp);
101 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
102 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);
104 #ifdef CONFIG_PROC_FS
105 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *proc_entry,
106 struct ptlrpc_service *svc);
107 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
108 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);
109 void ptlrpc_lprocfs_do_request_stat (struct ptlrpc_request *req,
110 long q_usec, long work_usec);
112 #define ptlrpc_lprocfs_register_service(params...) do{}while(0)
113 #define ptlrpc_lprocfs_unregister_service(params...) do{}while(0)
114 #define ptlrpc_lprocfs_rpc_sent(params...) do{}while(0)
115 #define ptlrpc_lprocfs_do_request_stat(params...) do{}while(0)
116 #endif /* CONFIG_PROC_FS */
123 * Holds NRS core fields.
127 * Protects nrs_core::nrs_policies, serializes external policy
128 * registration/unregistration, and NRS core lprocfs operations.
130 struct mutex nrs_mutex;
132 * List of all policy descriptors registered with NRS core; protected
133 * by nrs_core::nrs_mutex.
135 struct list_head nrs_policies;
138 int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
139 void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);
141 void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
142 struct ptlrpc_request *req, bool hp);
143 void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
144 void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
145 void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
146 struct ptlrpc_request *req, bool hp);
148 struct ptlrpc_request *
149 ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
150 bool peek, bool force);
152 static inline struct ptlrpc_request *
153 ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
156 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
159 static inline struct ptlrpc_request *
160 ptlrpc_nrs_req_peek_nolock(struct ptlrpc_service_part *svcpt, bool hp)
162 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, true, false);
165 void ptlrpc_nrs_req_del_nolock(struct ptlrpc_request *req);
166 bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);
167 bool ptlrpc_nrs_req_throttling_nolock(struct ptlrpc_service_part *svcpt,
170 int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
171 enum ptlrpc_nrs_queue_type queue, char *name,
172 enum ptlrpc_nrs_ctl opc, bool single, void *arg);
174 int ptlrpc_nrs_init(void);
175 void ptlrpc_nrs_fini(void);
177 static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
179 return svcpt->scp_nrs_hp != NULL;
182 static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
185 * If the first service partition has an HP NRS head, all service
188 return nrs_svcpt_has_hp(svc->srv_parts[0]);
192 struct ptlrpc_nrs *nrs_svcpt2nrs(struct ptlrpc_service_part *svcpt, bool hp)
194 LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
195 return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
198 static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
200 return policy->pol_nrs->nrs_svcpt->scp_cpt;
204 struct ptlrpc_service *nrs_pol2svc(struct ptlrpc_nrs_policy *policy)
206 return policy->pol_nrs->nrs_svcpt->scp_service;
210 struct ptlrpc_service_part *nrs_pol2svcpt(struct ptlrpc_nrs_policy *policy)
212 return policy->pol_nrs->nrs_svcpt;
216 struct cfs_cpt_table *nrs_pol2cptab(struct ptlrpc_nrs_policy *policy)
218 return nrs_pol2svc(policy)->srv_cptable;
221 static inline struct ptlrpc_nrs_resource *
222 nrs_request_resource(struct ptlrpc_nrs_request *nrq)
224 LASSERT(nrq->nr_initialized);
225 LASSERT(!nrq->nr_finalized);
227 return nrq->nr_res_ptrs[nrq->nr_res_idx];
231 struct ptlrpc_nrs_policy *nrs_request_policy(struct ptlrpc_nrs_request *nrq)
233 return nrs_request_resource(nrq)->res_policy;
236 #define NRS_LPROCFS_QUANTUM_NAME_REG "reg_quantum:"
237 #define NRS_LPROCFS_QUANTUM_NAME_HP "hp_quantum:"
240 * the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
242 #define LPROCFS_NRS_QUANTUM_MAX 65535
245 * Max valid command string is the size of the labels, plus "65535" twice, plus
246 * a separating space character.
248 #define LPROCFS_NRS_WR_QUANTUM_MAX_CMD \
249 sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " " \
250 NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))
252 /* recovd_thread.c */
254 int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);
257 void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc,
259 void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page,
260 int pageoffset, int len);
263 struct ptlrpc_reply_state *
264 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt);
265 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);
268 int ptlrpc_start_pinger(void);
269 int ptlrpc_stop_pinger(void);
270 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
271 void ptlrpc_pinger_commit_expected(struct obd_import *imp);
272 void ptlrpc_pinger_wake_up(void);
273 void ptlrpc_ping_import_soon(struct obd_import *imp);
274 int ping_evictor_wake(struct obd_export *exp);
277 int sptlrpc_null_init(void);
278 void sptlrpc_null_fini(void);
281 int sptlrpc_plain_init(void);
282 void sptlrpc_plain_fini(void);
285 int sptlrpc_enc_pool_init(void);
286 void sptlrpc_enc_pool_fini(void);
287 int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v);
290 int sptlrpc_lproc_init(void);
291 void sptlrpc_lproc_fini(void);
294 int sptlrpc_gc_init(void);
295 void sptlrpc_gc_fini(void);
298 void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
299 enum lustre_sec_part to,
300 struct obd_uuid *target,
302 struct sptlrpc_flavor *sf);
303 int sptlrpc_conf_init(void);
304 void sptlrpc_conf_fini(void);
308 int lustre_rename(struct dentry *dir, struct vfsmount *mnt, char *old_name,
312 int sptlrpc_init(void);
313 void sptlrpc_fini(void);
315 static inline bool ptlrpc_recoverable_error(int rc)
317 return (rc == -ENOTCONN || rc == -ENODEV);
320 #ifdef HAVE_SERVER_SUPPORT
321 int tgt_mod_init(void);
322 void tgt_mod_exit(void);
323 int nodemap_mod_init(void);
324 void nodemap_mod_exit(void);
325 #else /* HAVE_SERVER_SUPPORT */
326 static inline int tgt_mod_init(void)
331 static inline void tgt_mod_exit(void)
336 static inline int nodemap_mod_init(void)
341 static inline void nodemap_mod_exit(void)
345 #endif /* !HAVE_SERVER_SUPPORT */
347 static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
349 if (atomic_dec_and_test(&set->set_refcount))
353 /** initialise ptlrpc common fields */
354 static inline void ptlrpc_req_comm_init(struct ptlrpc_request *req)
356 spin_lock_init(&req->rq_lock);
357 atomic_set(&req->rq_refcount, 1);
358 INIT_LIST_HEAD(&req->rq_list);
359 INIT_LIST_HEAD(&req->rq_replay_list);
362 /** initialise client side ptlrpc request */
363 static inline void ptlrpc_cli_req_init(struct ptlrpc_request *req)
365 struct ptlrpc_cli_req *cr = &req->rq_cli;
367 ptlrpc_req_comm_init(req);
369 req->rq_receiving_reply = 0;
370 req->rq_req_unlinked = req->rq_reply_unlinked = 1;
372 INIT_LIST_HEAD(&cr->cr_set_chain);
373 INIT_LIST_HEAD(&cr->cr_ctx_chain);
374 init_waitqueue_head(&cr->cr_reply_waitq);
375 init_waitqueue_head(&cr->cr_set_waitq);
378 /** initialise server side ptlrpc request */
379 static inline void ptlrpc_srv_req_init(struct ptlrpc_request *req)
381 struct ptlrpc_srv_req *sr = &req->rq_srv;
383 ptlrpc_req_comm_init(req);
385 INIT_LIST_HEAD(&sr->sr_exp_list);
386 INIT_LIST_HEAD(&sr->sr_timed_list);
387 INIT_LIST_HEAD(&sr->sr_hist_list);
390 #endif /* PTLRPC_INTERNAL_H */