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, 2015, 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 mutex ptlrpc_all_services_mutex;
46 extern struct list_head ptlrpc_all_services;
48 extern struct mutex ptlrpcd_mutex;
49 extern struct mutex pinger_mutex;
51 int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
53 int ptlrpcd_start(struct ptlrpcd_ctl *pc);
56 void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
57 unsigned int service_time);
58 struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned int nfrags,
60 enum ptlrpc_bulk_op_type type,
62 const struct ptlrpc_bulk_frag_ops *ops);
63 int ptlrpc_request_cache_init(void);
64 void ptlrpc_request_cache_fini(void);
65 struct ptlrpc_request *ptlrpc_request_cache_alloc(gfp_t flags);
66 void ptlrpc_request_cache_free(struct ptlrpc_request *req);
67 void ptlrpc_init_xid(void);
68 void ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
69 struct ptlrpc_request *req);
70 int ptlrpc_expired_set(void *data);
71 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *set);
72 void ptlrpc_resend_req(struct ptlrpc_request *request);
73 void ptlrpc_set_bulk_mbits(struct ptlrpc_request *req);
74 void ptlrpc_assign_next_xid_nolock(struct ptlrpc_request *req);
75 __u64 ptlrpc_known_replied_xid(struct obd_import *imp);
76 void ptlrpc_add_unreplied(struct ptlrpc_request *req);
79 int ptlrpc_init_portals(void);
80 void ptlrpc_exit_portals(void);
82 void ptlrpc_request_handle_notconn(struct ptlrpc_request *req);
83 void lustre_assert_wire_constants(void);
84 int ptlrpc_import_in_recovery(struct obd_import *imp);
85 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
86 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
87 void ptlrpc_initiate_recovery(struct obd_import *imp);
89 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
90 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);
92 int ptlrpc_sysfs_register_service(struct kset *parent,
93 struct ptlrpc_service *svc);
94 void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc);
96 void ptlrpc_ldebugfs_register_service(struct dentry *debugfs_entry,
97 struct ptlrpc_service *svc);
98 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
99 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);
106 * Holds NRS core fields.
110 * Protects nrs_core::nrs_policies, serializes external policy
111 * registration/unregistration, and NRS core lprocfs operations.
113 struct mutex nrs_mutex;
115 * List of all policy descriptors registered with NRS core; protected
116 * by nrs_core::nrs_mutex.
118 struct list_head nrs_policies;
122 extern struct nrs_core nrs_core;
124 int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
125 void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);
127 void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
128 struct ptlrpc_request *req, bool hp);
129 void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
130 void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
131 void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
132 struct ptlrpc_request *req, bool hp);
134 struct ptlrpc_request *
135 ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
136 bool peek, bool force);
138 static inline struct ptlrpc_request *
139 ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
142 return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
145 bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);
147 int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
148 enum ptlrpc_nrs_queue_type queue, char *name,
149 enum ptlrpc_nrs_ctl opc, bool single, void *arg);
151 int ptlrpc_nrs_init(void);
152 void ptlrpc_nrs_fini(void);
154 static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
156 return svcpt->scp_nrs_hp != NULL;
159 static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
162 * If the first service partition has an HP NRS head, all service
165 return nrs_svcpt_has_hp(svc->srv_parts[0]);
169 struct ptlrpc_nrs *nrs_svcpt2nrs(struct ptlrpc_service_part *svcpt, bool hp)
171 LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
172 return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
175 static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
177 return policy->pol_nrs->nrs_svcpt->scp_cpt;
181 struct ptlrpc_service *nrs_pol2svc(struct ptlrpc_nrs_policy *policy)
183 return policy->pol_nrs->nrs_svcpt->scp_service;
187 struct ptlrpc_service_part *nrs_pol2svcpt(struct ptlrpc_nrs_policy *policy)
189 return policy->pol_nrs->nrs_svcpt;
193 struct cfs_cpt_table *nrs_pol2cptab(struct ptlrpc_nrs_policy *policy)
195 return nrs_pol2svc(policy)->srv_cptable;
198 static inline struct ptlrpc_nrs_resource *
199 nrs_request_resource(struct ptlrpc_nrs_request *nrq)
201 LASSERT(nrq->nr_initialized);
202 LASSERT(!nrq->nr_finalized);
204 return nrq->nr_res_ptrs[nrq->nr_res_idx];
208 struct ptlrpc_nrs_policy *nrs_request_policy(struct ptlrpc_nrs_request *nrq)
210 return nrs_request_resource(nrq)->res_policy;
213 #define NRS_LPROCFS_QUANTUM_NAME_REG "reg_quantum:"
214 #define NRS_LPROCFS_QUANTUM_NAME_HP "hp_quantum:"
217 * the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
219 #define LPROCFS_NRS_QUANTUM_MAX 65535
222 * Max valid command string is the size of the labels, plus "65535" twice, plus
223 * a separating space character.
225 #define LPROCFS_NRS_WR_QUANTUM_MAX_CMD \
226 sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " " \
227 NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))
229 /* ptlrpc/nrs_fifo.c */
230 extern struct ptlrpc_nrs_pol_conf nrs_conf_fifo;
232 /* recovd_thread.c */
234 int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);
237 void ptlrpc_fill_bulk_md(struct lnet_md *md, struct ptlrpc_bulk_desc *desc,
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);
253 int sptlrpc_null_init(void);
254 void sptlrpc_null_fini(void);
257 int sptlrpc_plain_init(void);
258 void sptlrpc_plain_fini(void);
261 int sptlrpc_enc_pool_init(void);
262 void sptlrpc_enc_pool_fini(void);
263 int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v);
266 int sptlrpc_lproc_init(void);
267 void sptlrpc_lproc_fini(void);
270 int sptlrpc_gc_init(void);
271 void sptlrpc_gc_fini(void);
274 void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
275 enum lustre_sec_part to,
276 struct obd_uuid *target,
278 struct sptlrpc_flavor *sf);
279 int sptlrpc_conf_init(void);
280 void sptlrpc_conf_fini(void);
283 int sptlrpc_init(void);
284 void sptlrpc_fini(void);
286 static inline bool ptlrpc_recoverable_error(int rc)
288 return (rc == -ENOTCONN || rc == -ENODEV);
291 static inline int tgt_mod_init(void)
296 static inline void tgt_mod_exit(void)
301 static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
303 if (atomic_dec_and_test(&set->set_refcount))
307 /** initialise ptlrpc common fields */
308 static inline void ptlrpc_req_comm_init(struct ptlrpc_request *req)
310 spin_lock_init(&req->rq_lock);
311 atomic_set(&req->rq_refcount, 1);
312 INIT_LIST_HEAD(&req->rq_list);
313 INIT_LIST_HEAD(&req->rq_replay_list);
316 /** initialise client side ptlrpc request */
317 static inline void ptlrpc_cli_req_init(struct ptlrpc_request *req)
319 struct ptlrpc_cli_req *cr = &req->rq_cli;
321 ptlrpc_req_comm_init(req);
323 req->rq_receiving_reply = 0;
324 req->rq_req_unlinked = 1;
325 req->rq_reply_unlinked = 1;
327 req->rq_receiving_reply = 0;
328 req->rq_req_unlinked = 1;
329 req->rq_reply_unlinked = 1;
331 INIT_LIST_HEAD(&cr->cr_set_chain);
332 INIT_LIST_HEAD(&cr->cr_ctx_chain);
333 INIT_LIST_HEAD(&cr->cr_unreplied_list);
334 init_waitqueue_head(&cr->cr_reply_waitq);
335 init_waitqueue_head(&cr->cr_set_waitq);
338 /** initialise server side ptlrpc request */
339 static inline void ptlrpc_srv_req_init(struct ptlrpc_request *req)
341 struct ptlrpc_srv_req *sr = &req->rq_srv;
343 ptlrpc_req_comm_init(req);
345 INIT_LIST_HEAD(&sr->sr_exp_list);
346 INIT_LIST_HEAD(&sr->sr_timed_list);
347 INIT_LIST_HEAD(&sr->sr_hist_list);
350 static inline bool ptlrpc_req_is_connect(struct ptlrpc_request *req)
352 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CONNECT ||
353 lustre_msg_get_opc(req->rq_reqmsg) == OST_CONNECT ||
354 lustre_msg_get_opc(req->rq_reqmsg) == MGS_CONNECT)
360 static inline bool ptlrpc_req_is_disconnect(struct ptlrpc_request *req)
362 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_DISCONNECT ||
363 lustre_msg_get_opc(req->rq_reqmsg) == OST_DISCONNECT ||
364 lustre_msg_get_opc(req->rq_reqmsg) == MGS_DISCONNECT)
370 #endif /* PTLRPC_INTERNAL_H */