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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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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 mutex ptlrpc_all_services_mutex;
51 int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
53 int ptlrpcd_start(int index, int max, const char *name, struct ptlrpcd_ctl *pc);
56 struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned npages, unsigned max_brw,
57 unsigned type, unsigned portal);
58 int ptlrpc_request_cache_init(void);
59 void ptlrpc_request_cache_fini(void);
60 struct ptlrpc_request *ptlrpc_request_cache_alloc(int flags);
61 void ptlrpc_request_cache_free(struct ptlrpc_request *req);
62 void ptlrpc_init_xid(void);
65 int ptlrpc_init_portals(void);
66 void ptlrpc_exit_portals(void);
68 void ptlrpc_request_handle_notconn(struct ptlrpc_request *);
69 void lustre_assert_wire_constants(void);
70 int ptlrpc_import_in_recovery(struct obd_import *imp);
71 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
72 void ptlrpc_handle_failed_import(struct obd_import *imp);
73 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
74 void ptlrpc_initiate_recovery(struct obd_import *imp);
76 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
77 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);
80 void ptlrpc_lprocfs_register_service(struct proc_dir_entry *proc_entry,
81 struct ptlrpc_service *svc);
82 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
83 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);
84 void ptlrpc_lprocfs_do_request_stat (struct ptlrpc_request *req,
85 long q_usec, long work_usec);
87 #define ptlrpc_lprocfs_register_service(params...) do{}while(0)
88 #define ptlrpc_lprocfs_unregister_service(params...) do{}while(0)
89 #define ptlrpc_lprocfs_rpc_sent(params...) do{}while(0)
90 #define ptlrpc_lprocfs_do_request_stat(params...) do{}while(0)
98 * Holds NRS core fields.
102 * Protects nrs_core::nrs_policies, serializes external policy
103 * registration/unregistration, and NRS core lprocfs operations.
105 struct mutex nrs_mutex;
107 * List of all policy descriptors registered with NRS core; protected
108 * by nrs_core::nrs_mutex.
110 struct list_head nrs_policies;
113 int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
114 void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);
116 void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
117 struct ptlrpc_request *req, bool hp);
118 void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
119 void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
120 void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
121 struct ptlrpc_request *req, bool hp);
123 struct ptlrpc_request *
124 ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
125 bool peek, bool force);
127 static inline struct ptlrpc_request *
128 ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
131 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
134 static inline struct ptlrpc_request *
135 ptlrpc_nrs_req_peek_nolock(struct ptlrpc_service_part *svcpt, bool hp)
137 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, true, false);
140 void ptlrpc_nrs_req_del_nolock(struct ptlrpc_request *req);
141 bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);
142 bool ptlrpc_nrs_req_throttling_nolock(struct ptlrpc_service_part *svcpt,
145 int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
146 enum ptlrpc_nrs_queue_type queue, char *name,
147 enum ptlrpc_nrs_ctl opc, bool single, void *arg);
149 int ptlrpc_nrs_init(void);
150 void ptlrpc_nrs_fini(void);
152 static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
154 return svcpt->scp_nrs_hp != NULL;
157 static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
160 * If the first service partition has an HP NRS head, all service
163 return nrs_svcpt_has_hp(svc->srv_parts[0]);
167 struct ptlrpc_nrs *nrs_svcpt2nrs(struct ptlrpc_service_part *svcpt, bool hp)
169 LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
170 return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
173 static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
175 return policy->pol_nrs->nrs_svcpt->scp_cpt;
179 struct ptlrpc_service *nrs_pol2svc(struct ptlrpc_nrs_policy *policy)
181 return policy->pol_nrs->nrs_svcpt->scp_service;
185 struct ptlrpc_service_part *nrs_pol2svcpt(struct ptlrpc_nrs_policy *policy)
187 return policy->pol_nrs->nrs_svcpt;
191 struct cfs_cpt_table *nrs_pol2cptab(struct ptlrpc_nrs_policy *policy)
193 return nrs_pol2svc(policy)->srv_cptable;
196 static inline struct ptlrpc_nrs_resource *
197 nrs_request_resource(struct ptlrpc_nrs_request *nrq)
199 LASSERT(nrq->nr_initialized);
200 LASSERT(!nrq->nr_finalized);
202 return nrq->nr_res_ptrs[nrq->nr_res_idx];
206 struct ptlrpc_nrs_policy *nrs_request_policy(struct ptlrpc_nrs_request *nrq)
208 return nrs_request_resource(nrq)->res_policy;
211 #define NRS_LPROCFS_QUANTUM_NAME_REG "reg_quantum:"
212 #define NRS_LPROCFS_QUANTUM_NAME_HP "hp_quantum:"
215 * the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
217 #define LPROCFS_NRS_QUANTUM_MAX 65535
220 * Max valid command string is the size of the labels, plus "65535" twice, plus
221 * a separating space character.
223 #define LPROCFS_NRS_WR_QUANTUM_MAX_CMD \
224 sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " " \
225 NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))
227 /* recovd_thread.c */
229 int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);
232 void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc,
234 void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page,
235 int pageoffset, int len);
238 struct ptlrpc_reply_state *
239 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt);
240 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);
243 int ptlrpc_start_pinger(void);
244 int ptlrpc_stop_pinger(void);
245 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
246 void ptlrpc_pinger_commit_expected(struct obd_import *imp);
247 void ptlrpc_pinger_wake_up(void);
248 void ptlrpc_ping_import_soon(struct obd_import *imp);
250 int ping_evictor_wake(struct obd_export *exp);
252 #define ping_evictor_wake(exp) 1
256 int sptlrpc_null_init(void);
257 void sptlrpc_null_fini(void);
260 int sptlrpc_plain_init(void);
261 void sptlrpc_plain_fini(void);
264 int sptlrpc_enc_pool_init(void);
265 void sptlrpc_enc_pool_fini(void);
266 int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v);
269 int sptlrpc_lproc_init(void);
270 void sptlrpc_lproc_fini(void);
273 int sptlrpc_gc_init(void);
274 void sptlrpc_gc_fini(void);
277 void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
278 enum lustre_sec_part to,
279 struct obd_uuid *target,
281 struct sptlrpc_flavor *sf);
282 int sptlrpc_conf_init(void);
283 void sptlrpc_conf_fini(void);
285 int lustre_rename(struct dentry *dir, struct vfsmount *mnt, char *old_name,
289 int sptlrpc_init(void);
290 void sptlrpc_fini(void);
292 static inline int ll_rpc_recoverable_error(int rc)
294 return (rc == -ENOTCONN || rc == -ENODEV);
297 #if defined HAVE_SERVER_SUPPORT && defined(__KERNEL__)
298 int tgt_mod_init(void);
299 void tgt_mod_exit(void);
301 static inline int tgt_mod_init(void)
306 static inline void tgt_mod_exit(void)
312 static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
314 if (cfs_atomic_dec_and_test(&set->set_refcount))
317 #endif /* PTLRPC_INTERNAL_H */