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,
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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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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30 * Copyright (c) 2011, 2013, Intel Corporation.
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;
52 int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
54 int ptlrpcd_start(int index, int max, const char *name, struct ptlrpcd_ctl *pc);
57 void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
58 unsigned int service_time);
59 struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned npages, unsigned max_brw,
60 unsigned type, unsigned portal);
61 int ptlrpc_request_cache_init(void);
62 void ptlrpc_request_cache_fini(void);
63 struct ptlrpc_request *ptlrpc_request_cache_alloc(gfp_t flags);
64 void ptlrpc_request_cache_free(struct ptlrpc_request *req);
65 void ptlrpc_init_xid(void);
68 int ptlrpc_init_portals(void);
69 void ptlrpc_exit_portals(void);
71 void ptlrpc_request_handle_notconn(struct ptlrpc_request *);
72 void lustre_assert_wire_constants(void);
73 int ptlrpc_import_in_recovery(struct obd_import *imp);
74 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
75 void ptlrpc_handle_failed_import(struct obd_import *imp);
76 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
77 void ptlrpc_initiate_recovery(struct obd_import *imp);
79 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
80 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);
83 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *proc_entry,
84 struct ptlrpc_service *svc);
85 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
86 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);
87 void ptlrpc_lprocfs_do_request_stat (struct ptlrpc_request *req,
88 long q_usec, long work_usec);
90 #define ptlrpc_lprocfs_register_service(params...) do{}while(0)
91 #define ptlrpc_lprocfs_unregister_service(params...) do{}while(0)
92 #define ptlrpc_lprocfs_rpc_sent(params...) do{}while(0)
93 #define ptlrpc_lprocfs_do_request_stat(params...) do{}while(0)
101 * Holds NRS core fields.
105 * Protects nrs_core::nrs_policies, serializes external policy
106 * registration/unregistration, and NRS core lprocfs operations.
108 struct mutex nrs_mutex;
110 * List of all policy descriptors registered with NRS core; protected
111 * by nrs_core::nrs_mutex.
113 struct list_head nrs_policies;
116 int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
117 void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);
119 void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
120 struct ptlrpc_request *req, bool hp);
121 void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
122 void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
123 void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
124 struct ptlrpc_request *req, bool hp);
126 struct ptlrpc_request *
127 ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
128 bool peek, bool force);
130 static inline struct ptlrpc_request *
131 ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
134 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
137 static inline struct ptlrpc_request *
138 ptlrpc_nrs_req_peek_nolock(struct ptlrpc_service_part *svcpt, bool hp)
140 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, true, false);
143 void ptlrpc_nrs_req_del_nolock(struct ptlrpc_request *req);
144 bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);
145 bool ptlrpc_nrs_req_throttling_nolock(struct ptlrpc_service_part *svcpt,
148 int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
149 enum ptlrpc_nrs_queue_type queue, char *name,
150 enum ptlrpc_nrs_ctl opc, bool single, void *arg);
152 int ptlrpc_nrs_init(void);
153 void ptlrpc_nrs_fini(void);
155 static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
157 return svcpt->scp_nrs_hp != NULL;
160 static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
163 * If the first service partition has an HP NRS head, all service
166 return nrs_svcpt_has_hp(svc->srv_parts[0]);
170 struct ptlrpc_nrs *nrs_svcpt2nrs(struct ptlrpc_service_part *svcpt, bool hp)
172 LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
173 return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
176 static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
178 return policy->pol_nrs->nrs_svcpt->scp_cpt;
182 struct ptlrpc_service *nrs_pol2svc(struct ptlrpc_nrs_policy *policy)
184 return policy->pol_nrs->nrs_svcpt->scp_service;
188 struct ptlrpc_service_part *nrs_pol2svcpt(struct ptlrpc_nrs_policy *policy)
190 return policy->pol_nrs->nrs_svcpt;
194 struct cfs_cpt_table *nrs_pol2cptab(struct ptlrpc_nrs_policy *policy)
196 return nrs_pol2svc(policy)->srv_cptable;
199 static inline struct ptlrpc_nrs_resource *
200 nrs_request_resource(struct ptlrpc_nrs_request *nrq)
202 LASSERT(nrq->nr_initialized);
203 LASSERT(!nrq->nr_finalized);
205 return nrq->nr_res_ptrs[nrq->nr_res_idx];
209 struct ptlrpc_nrs_policy *nrs_request_policy(struct ptlrpc_nrs_request *nrq)
211 return nrs_request_resource(nrq)->res_policy;
214 #define NRS_LPROCFS_QUANTUM_NAME_REG "reg_quantum:"
215 #define NRS_LPROCFS_QUANTUM_NAME_HP "hp_quantum:"
218 * the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
220 #define LPROCFS_NRS_QUANTUM_MAX 65535
223 * Max valid command string is the size of the labels, plus "65535" twice, plus
224 * a separating space character.
226 #define LPROCFS_NRS_WR_QUANTUM_MAX_CMD \
227 sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " " \
228 NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))
230 /* recovd_thread.c */
232 int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);
235 void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc,
237 void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page,
238 int pageoffset, int len);
241 struct ptlrpc_reply_state *
242 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt);
243 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);
246 int ptlrpc_start_pinger(void);
247 int ptlrpc_stop_pinger(void);
248 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
249 void ptlrpc_pinger_commit_expected(struct obd_import *imp);
250 void ptlrpc_pinger_wake_up(void);
251 void ptlrpc_ping_import_soon(struct obd_import *imp);
252 int ping_evictor_wake(struct obd_export *exp);
255 int sptlrpc_null_init(void);
256 void sptlrpc_null_fini(void);
259 int sptlrpc_plain_init(void);
260 void sptlrpc_plain_fini(void);
263 int sptlrpc_enc_pool_init(void);
264 void sptlrpc_enc_pool_fini(void);
265 int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v);
268 int sptlrpc_lproc_init(void);
269 void sptlrpc_lproc_fini(void);
272 int sptlrpc_gc_init(void);
273 void sptlrpc_gc_fini(void);
276 void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
277 enum lustre_sec_part to,
278 struct obd_uuid *target,
280 struct sptlrpc_flavor *sf);
281 int sptlrpc_conf_init(void);
282 void sptlrpc_conf_fini(void);
286 int lustre_rename(struct dentry *dir, struct vfsmount *mnt, char *old_name,
290 int sptlrpc_init(void);
291 void sptlrpc_fini(void);
293 static inline int ll_rpc_recoverable_error(int rc)
295 return (rc == -ENOTCONN || rc == -ENODEV);
298 #ifdef HAVE_SERVER_SUPPORT
299 int tgt_mod_init(void);
300 void tgt_mod_exit(void);
301 int nodemap_mod_init(void);
302 void nodemap_mod_exit(void);
303 #else /* HAVE_SERVER_SUPPORT */
304 static inline int tgt_mod_init(void)
309 static inline void tgt_mod_exit(void)
314 static inline int nodemap_mod_init(void)
319 static inline void nodemap_mod_exit(void)
323 #endif /* !HAVE_SERVER_SUPPORT */
325 static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
327 if (atomic_dec_and_test(&set->set_refcount))
330 #endif /* PTLRPC_INTERNAL_H */