drivers/staging/lustre/lustre/ptlrpc/ptlrpc_internal.h - arm/linux - Git at Google

 /*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 only,
  * as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License version 2 for more details (a copy is included
  * in the LICENSE file that accompanied this code).
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
  * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
 /*
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
  * Copyright (c) 2011, 2015, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
  * Lustre is a trademark of Sun Microsystems, Inc.
  */

 /* Intramodule declarations for ptlrpc. */

 #ifndef PTLRPC_INTERNAL_H
 #define PTLRPC_INTERNAL_H

 #include "../ldlm/ldlm_internal.h"

 struct ldlm_namespace;
 struct obd_import;
 struct ldlm_res_id;
 struct ptlrpc_request_set;
 extern int test_req_buffer_pressure;
 extern struct mutex ptlrpc_all_services_mutex;
 extern struct list_head ptlrpc_all_services;

 extern struct mutex ptlrpcd_mutex;
 extern struct mutex pinger_mutex;

 int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
 /* ptlrpcd.c */
 int ptlrpcd_start(struct ptlrpcd_ctl *pc);

 /* client.c */
 void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
 			       unsigned int service_time);
 struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned int nfrags,
 					 unsigned int max_brw,
 					 enum ptlrpc_bulk_op_type type,
 					 unsigned int portal,
 					 const struct ptlrpc_bulk_frag_ops *ops);
 int ptlrpc_request_cache_init(void);
 void ptlrpc_request_cache_fini(void);
 struct ptlrpc_request *ptlrpc_request_cache_alloc(gfp_t flags);
 void ptlrpc_request_cache_free(struct ptlrpc_request *req);
 void ptlrpc_init_xid(void);
 void ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
 			    struct ptlrpc_request *req);
 int ptlrpc_expired_set(void *data);
 int ptlrpc_set_next_timeout(struct ptlrpc_request_set *set);
 void ptlrpc_resend_req(struct ptlrpc_request *request);
 void ptlrpc_set_bulk_mbits(struct ptlrpc_request *req);
 void ptlrpc_assign_next_xid_nolock(struct ptlrpc_request *req);
 __u64 ptlrpc_known_replied_xid(struct obd_import *imp);
 void ptlrpc_add_unreplied(struct ptlrpc_request *req);

 /* events.c */
 int ptlrpc_init_portals(void);
 void ptlrpc_exit_portals(void);

 void ptlrpc_request_handle_notconn(struct ptlrpc_request *req);
 void lustre_assert_wire_constants(void);
 int ptlrpc_import_in_recovery(struct obd_import *imp);
 int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
 int ptlrpc_replay_next(struct obd_import *imp, int *inflight);
 void ptlrpc_initiate_recovery(struct obd_import *imp);

 int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
 int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);

 int ptlrpc_sysfs_register_service(struct kset *parent,
 				  struct ptlrpc_service *svc);
 void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc);

 void ptlrpc_ldebugfs_register_service(struct dentry *debugfs_entry,
 				      struct ptlrpc_service *svc);
 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
 void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);

 /* NRS */

 /**
  * NRS core object.
  *
  * Holds NRS core fields.
  */
 struct nrs_core {
 	/**
 	 * Protects nrs_core::nrs_policies, serializes external policy
 	 * registration/unregistration, and NRS core lprocfs operations.
 	 */
 	struct mutex nrs_mutex;
 	/**
 	 * List of all policy descriptors registered with NRS core; protected
 	 * by nrs_core::nrs_mutex.
 	 */
 	struct list_head nrs_policies;

 };

 extern struct nrs_core nrs_core;

 int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
 void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);

 void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
 			       struct ptlrpc_request *req, bool hp);
 void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
 void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
 void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
 			struct ptlrpc_request *req, bool hp);

 struct ptlrpc_request *
 ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
 			   bool peek, bool force);

 static inline struct ptlrpc_request *
 ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
 			  bool force)
 {
 	return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
 }

 bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);

 int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
 			      enum ptlrpc_nrs_queue_type queue, char *name,
 			      enum ptlrpc_nrs_ctl opc, bool single, void *arg);

 int ptlrpc_nrs_init(void);
 void ptlrpc_nrs_fini(void);

 static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
 {
 	return svcpt->scp_nrs_hp != NULL;
 }

 static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
 {
 	/**
 	 * If the first service partition has an HP NRS head, all service
 	 * partitions will.
 	 */
 	return nrs_svcpt_has_hp(svc->srv_parts[0]);
 }

 static inline
 struct ptlrpc_nrs *nrs_svcpt2nrs(struct ptlrpc_service_part *svcpt, bool hp)
 {
 	LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
 	return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
 }

 static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
 {
 	return policy->pol_nrs->nrs_svcpt->scp_cpt;
 }

 static inline
 struct ptlrpc_service *nrs_pol2svc(struct ptlrpc_nrs_policy *policy)
 {
 	return policy->pol_nrs->nrs_svcpt->scp_service;
 }

 static inline
 struct ptlrpc_service_part *nrs_pol2svcpt(struct ptlrpc_nrs_policy *policy)
 {
 	return policy->pol_nrs->nrs_svcpt;
 }

 static inline
 struct cfs_cpt_table *nrs_pol2cptab(struct ptlrpc_nrs_policy *policy)
 {
 	return nrs_pol2svc(policy)->srv_cptable;
 }

 static inline struct ptlrpc_nrs_resource *
 nrs_request_resource(struct ptlrpc_nrs_request *nrq)
 {
 	LASSERT(nrq->nr_initialized);
 	LASSERT(!nrq->nr_finalized);

 	return nrq->nr_res_ptrs[nrq->nr_res_idx];
 }

 static inline
 struct ptlrpc_nrs_policy *nrs_request_policy(struct ptlrpc_nrs_request *nrq)
 {
 	return nrs_request_resource(nrq)->res_policy;
 }

 #define NRS_LPROCFS_QUANTUM_NAME_REG	"reg_quantum:"
 #define NRS_LPROCFS_QUANTUM_NAME_HP	"hp_quantum:"

 /**
  * the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
  */
 #define LPROCFS_NRS_QUANTUM_MAX		65535

 /**
  * Max valid command string is the size of the labels, plus "65535" twice, plus
  * a separating space character.
  */
 #define LPROCFS_NRS_WR_QUANTUM_MAX_CMD					       \
  sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " "  \
 	NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))

 /* ptlrpc/nrs_fifo.c */
 extern struct ptlrpc_nrs_pol_conf nrs_conf_fifo;

 /* recovd_thread.c */

 int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);

 /* pers.c */
 void ptlrpc_fill_bulk_md(struct lnet_md *md, struct ptlrpc_bulk_desc *desc,
 			 int mdcnt);

 /* pack_generic.c */
 struct ptlrpc_reply_state *
 lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt);
 void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);

 /* pinger.c */
 int ptlrpc_start_pinger(void);
 int ptlrpc_stop_pinger(void);
 void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
 void ptlrpc_pinger_commit_expected(struct obd_import *imp);
 void ptlrpc_pinger_wake_up(void);

 /* sec_null.c */
 int  sptlrpc_null_init(void);
 void sptlrpc_null_fini(void);

 /* sec_plain.c */
 int  sptlrpc_plain_init(void);
 void sptlrpc_plain_fini(void);

 /* sec_bulk.c */
 int  sptlrpc_enc_pool_init(void);
 void sptlrpc_enc_pool_fini(void);
 int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v);

 /* sec_lproc.c */
 int  sptlrpc_lproc_init(void);
 void sptlrpc_lproc_fini(void);

 /* sec_gc.c */
 int sptlrpc_gc_init(void);
 void sptlrpc_gc_fini(void);

 /* sec_config.c */
 void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
 				enum lustre_sec_part to,
 				struct obd_uuid *target,
 				lnet_nid_t nid,
 				struct sptlrpc_flavor *sf);
 int  sptlrpc_conf_init(void);
 void sptlrpc_conf_fini(void);

 /* sec.c */
 int  sptlrpc_init(void);
 void sptlrpc_fini(void);

 static inline bool ptlrpc_recoverable_error(int rc)
 {
 	return (rc == -ENOTCONN || rc == -ENODEV);
 }

 static inline int tgt_mod_init(void)
 {
 	return 0;
 }

 static inline void tgt_mod_exit(void)
 {
 	return;
 }

 static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
 {
 	if (atomic_dec_and_test(&set->set_refcount))
 		kfree(set);
 }

 /** initialise ptlrpc common fields */
 static inline void ptlrpc_req_comm_init(struct ptlrpc_request *req)
 {
 	spin_lock_init(&req->rq_lock);
 	atomic_set(&req->rq_refcount, 1);
 	INIT_LIST_HEAD(&req->rq_list);
 	INIT_LIST_HEAD(&req->rq_replay_list);
 }

 /** initialise client side ptlrpc request */
 static inline void ptlrpc_cli_req_init(struct ptlrpc_request *req)
 {
 	struct ptlrpc_cli_req *cr = &req->rq_cli;

 	ptlrpc_req_comm_init(req);

 	req->rq_receiving_reply = 0;
 	req->rq_req_unlinked = 1;
 	req->rq_reply_unlinked = 1;

 	req->rq_receiving_reply = 0;
 	req->rq_req_unlinked = 1;
 	req->rq_reply_unlinked = 1;

 	INIT_LIST_HEAD(&cr->cr_set_chain);
 	INIT_LIST_HEAD(&cr->cr_ctx_chain);
 	INIT_LIST_HEAD(&cr->cr_unreplied_list);
 	init_waitqueue_head(&cr->cr_reply_waitq);
 	init_waitqueue_head(&cr->cr_set_waitq);
 }

 /** initialise server side ptlrpc request */
 static inline void ptlrpc_srv_req_init(struct ptlrpc_request *req)
 {
 	struct ptlrpc_srv_req *sr = &req->rq_srv;

 	ptlrpc_req_comm_init(req);
 	req->rq_srv_req = 1;
 	INIT_LIST_HEAD(&sr->sr_exp_list);
 	INIT_LIST_HEAD(&sr->sr_timed_list);
 	INIT_LIST_HEAD(&sr->sr_hist_list);
 }

 static inline bool ptlrpc_req_is_connect(struct ptlrpc_request *req)
 {
 	if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CONNECT ||
 	    lustre_msg_get_opc(req->rq_reqmsg) == OST_CONNECT ||
 	    lustre_msg_get_opc(req->rq_reqmsg) == MGS_CONNECT)
 		return true;
 	else
 		return false;
 }

 static inline bool ptlrpc_req_is_disconnect(struct ptlrpc_request *req)
 {
 	if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_DISCONNECT ||
 	    lustre_msg_get_opc(req->rq_reqmsg) == OST_DISCONNECT ||
 	    lustre_msg_get_opc(req->rq_reqmsg) == MGS_DISCONNECT)
 		return true;
 	else
 		return false;
 }

 #endif /* PTLRPC_INTERNAL_H */
	/*
	* GPL HEADER START
	*
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 only,
	* as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License version 2 for more details (a copy is included
	* in the LICENSE file that accompanied this code).
	*
	* You should have received a copy of the GNU General Public License
	* version 2 along with this program; If not, see
	* http://www.gnu.org/licenses/gpl-2.0.html
	*
	* GPL HEADER END
	*/
	/*
	* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
	* Use is subject to license terms.
	*
	* Copyright (c) 2011, 2015, Intel Corporation.
	*/
	/*
	* This file is part of Lustre, http://www.lustre.org/
	* Lustre is a trademark of Sun Microsystems, Inc.
	*/

	/* Intramodule declarations for ptlrpc. */

	#ifndef PTLRPC_INTERNAL_H
	#define PTLRPC_INTERNAL_H

	#include "../ldlm/ldlm_internal.h"

	struct ldlm_namespace;
	struct obd_import;
	struct ldlm_res_id;
	struct ptlrpc_request_set;
	extern int test_req_buffer_pressure;
	extern struct mutex ptlrpc_all_services_mutex;
	extern struct list_head ptlrpc_all_services;

	extern struct mutex ptlrpcd_mutex;
	extern struct mutex pinger_mutex;

	int ptlrpc_start_thread(struct ptlrpc_service_part *svcpt, int wait);
	/* ptlrpcd.c */
	int ptlrpcd_start(struct ptlrpcd_ctl *pc);

	/* client.c */
	void ptlrpc_at_adj_net_latency(struct ptlrpc_request *req,
	unsigned int service_time);
	struct ptlrpc_bulk_desc *ptlrpc_new_bulk(unsigned int nfrags,
	unsigned int max_brw,
	enum ptlrpc_bulk_op_type type,
	unsigned int portal,
	const struct ptlrpc_bulk_frag_ops *ops);
	int ptlrpc_request_cache_init(void);
	void ptlrpc_request_cache_fini(void);
	struct ptlrpc_request *ptlrpc_request_cache_alloc(gfp_t flags);
	void ptlrpc_request_cache_free(struct ptlrpc_request *req);
	void ptlrpc_init_xid(void);
	void ptlrpc_set_add_new_req(struct ptlrpcd_ctl *pc,
	struct ptlrpc_request *req);
	int ptlrpc_expired_set(void *data);
	int ptlrpc_set_next_timeout(struct ptlrpc_request_set *set);
	void ptlrpc_resend_req(struct ptlrpc_request *request);
	void ptlrpc_set_bulk_mbits(struct ptlrpc_request *req);
	void ptlrpc_assign_next_xid_nolock(struct ptlrpc_request *req);
	__u64 ptlrpc_known_replied_xid(struct obd_import *imp);
	void ptlrpc_add_unreplied(struct ptlrpc_request *req);

	/* events.c */
	int ptlrpc_init_portals(void);
	void ptlrpc_exit_portals(void);

	void ptlrpc_request_handle_notconn(struct ptlrpc_request *req);
	void lustre_assert_wire_constants(void);
	int ptlrpc_import_in_recovery(struct obd_import *imp);
	int ptlrpc_set_import_discon(struct obd_import *imp, __u32 conn_cnt);
	int ptlrpc_replay_next(struct obd_import imp, int inflight);
	void ptlrpc_initiate_recovery(struct obd_import *imp);

	int lustre_unpack_req_ptlrpc_body(struct ptlrpc_request *req, int offset);
	int lustre_unpack_rep_ptlrpc_body(struct ptlrpc_request *req, int offset);

	int ptlrpc_sysfs_register_service(struct kset *parent,
	struct ptlrpc_service *svc);
	void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc);

	void ptlrpc_ldebugfs_register_service(struct dentry *debugfs_entry,
	struct ptlrpc_service *svc);
	void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc);
	void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount);

	/* NRS */

	/**
	* NRS core object.
	*
	* Holds NRS core fields.
	*/
	struct nrs_core {
	/**
	* Protects nrs_core::nrs_policies, serializes external policy
	* registration/unregistration, and NRS core lprocfs operations.
	*/
	struct mutex nrs_mutex;
	/**
	* List of all policy descriptors registered with NRS core; protected
	* by nrs_core::nrs_mutex.
	*/
	struct list_head nrs_policies;

	};

	extern struct nrs_core nrs_core;

	int ptlrpc_service_nrs_setup(struct ptlrpc_service *svc);
	void ptlrpc_service_nrs_cleanup(struct ptlrpc_service *svc);

	void ptlrpc_nrs_req_initialize(struct ptlrpc_service_part *svcpt,
	struct ptlrpc_request *req, bool hp);
	void ptlrpc_nrs_req_finalize(struct ptlrpc_request *req);
	void ptlrpc_nrs_req_stop_nolock(struct ptlrpc_request *req);
	void ptlrpc_nrs_req_add(struct ptlrpc_service_part *svcpt,
	struct ptlrpc_request *req, bool hp);

	struct ptlrpc_request *
	ptlrpc_nrs_req_get_nolock0(struct ptlrpc_service_part *svcpt, bool hp,
	bool peek, bool force);

	static inline struct ptlrpc_request *
	ptlrpc_nrs_req_get_nolock(struct ptlrpc_service_part *svcpt, bool hp,
	bool force)
	{
	return ptlrpc_nrs_req_get_nolock0(svcpt, hp, false, force);
	}

	bool ptlrpc_nrs_req_pending_nolock(struct ptlrpc_service_part *svcpt, bool hp);

	int ptlrpc_nrs_policy_control(const struct ptlrpc_service *svc,
	enum ptlrpc_nrs_queue_type queue, char *name,
	enum ptlrpc_nrs_ctl opc, bool single, void *arg);

	int ptlrpc_nrs_init(void);
	void ptlrpc_nrs_fini(void);

	static inline bool nrs_svcpt_has_hp(const struct ptlrpc_service_part *svcpt)
	{
	return svcpt->scp_nrs_hp != NULL;
	}

	static inline bool nrs_svc_has_hp(const struct ptlrpc_service *svc)
	{
	/**
	* If the first service partition has an HP NRS head, all service
	* partitions will.
	*/
	return nrs_svcpt_has_hp(svc->srv_parts[0]);
	}

	static inline
	struct ptlrpc_nrs nrs_svcpt2nrs(struct ptlrpc_service_part svcpt, bool hp)
	{
	LASSERT(ergo(hp, nrs_svcpt_has_hp(svcpt)));
	return hp ? svcpt->scp_nrs_hp : &svcpt->scp_nrs_reg;
	}

	static inline int nrs_pol2cptid(const struct ptlrpc_nrs_policy *policy)
	{
	return policy->pol_nrs->nrs_svcpt->scp_cpt;
	}

	static inline
	struct ptlrpc_service nrs_pol2svc(struct ptlrpc_nrs_policy policy)
	{
	return policy->pol_nrs->nrs_svcpt->scp_service;
	}

	static inline
	struct ptlrpc_service_part nrs_pol2svcpt(struct ptlrpc_nrs_policy policy)
	{
	return policy->pol_nrs->nrs_svcpt;
	}

	static inline
	struct cfs_cpt_table nrs_pol2cptab(struct ptlrpc_nrs_policy policy)
	{
	return nrs_pol2svc(policy)->srv_cptable;
	}

	static inline struct ptlrpc_nrs_resource *
	nrs_request_resource(struct ptlrpc_nrs_request *nrq)
	{
	LASSERT(nrq->nr_initialized);
	LASSERT(!nrq->nr_finalized);

	return nrq->nr_res_ptrs[nrq->nr_res_idx];
	}

	static inline
	struct ptlrpc_nrs_policy nrs_request_policy(struct ptlrpc_nrs_request nrq)
	{
	return nrs_request_resource(nrq)->res_policy;
	}

	#define NRS_LPROCFS_QUANTUM_NAME_REG "reg_quantum:"
	#define NRS_LPROCFS_QUANTUM_NAME_HP "hp_quantum:"

	/**
	* the maximum size of nrs_crrn_client::cc_quantum and nrs_orr_data::od_quantum.
	*/
	#define LPROCFS_NRS_QUANTUM_MAX 65535

	/**
	* Max valid command string is the size of the labels, plus "65535" twice, plus
	* a separating space character.
	*/
	#define LPROCFS_NRS_WR_QUANTUM_MAX_CMD \
	sizeof(NRS_LPROCFS_QUANTUM_NAME_REG __stringify(LPROCFS_NRS_QUANTUM_MAX) " " \
	NRS_LPROCFS_QUANTUM_NAME_HP __stringify(LPROCFS_NRS_QUANTUM_MAX))

	/* ptlrpc/nrs_fifo.c */
	extern struct ptlrpc_nrs_pol_conf nrs_conf_fifo;

	/* recovd_thread.c */

	int ptlrpc_expire_one_request(struct ptlrpc_request *req, int async_unlink);

	/* pers.c */
	void ptlrpc_fill_bulk_md(struct lnet_md md, struct ptlrpc_bulk_desc desc,
	int mdcnt);

	/* pack_generic.c */
	struct ptlrpc_reply_state *
	lustre_get_emerg_rs(struct ptlrpc_service_part *svcpt);
	void lustre_put_emerg_rs(struct ptlrpc_reply_state *rs);

	/* pinger.c */
	int ptlrpc_start_pinger(void);
	int ptlrpc_stop_pinger(void);
	void ptlrpc_pinger_sending_on_import(struct obd_import *imp);
	void ptlrpc_pinger_commit_expected(struct obd_import *imp);
	void ptlrpc_pinger_wake_up(void);

	/* sec_null.c */
	int sptlrpc_null_init(void);
	void sptlrpc_null_fini(void);

	/* sec_plain.c */
	int sptlrpc_plain_init(void);
	void sptlrpc_plain_fini(void);

	/* sec_bulk.c */
	int sptlrpc_enc_pool_init(void);
	void sptlrpc_enc_pool_fini(void);
	int sptlrpc_proc_enc_pool_seq_show(struct seq_file m, void v);

	/* sec_lproc.c */
	int sptlrpc_lproc_init(void);
	void sptlrpc_lproc_fini(void);

	/* sec_gc.c */
	int sptlrpc_gc_init(void);
	void sptlrpc_gc_fini(void);

	/* sec_config.c */
	void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
	enum lustre_sec_part to,
	struct obd_uuid *target,
	lnet_nid_t nid,
	struct sptlrpc_flavor *sf);
	int sptlrpc_conf_init(void);
	void sptlrpc_conf_fini(void);

	/* sec.c */
	int sptlrpc_init(void);
	void sptlrpc_fini(void);

	static inline bool ptlrpc_recoverable_error(int rc)
	{
	return (rc == -ENOTCONN \|\| rc == -ENODEV);
	}

	static inline int tgt_mod_init(void)
	{
	return 0;
	}

	static inline void tgt_mod_exit(void)
	{
	return;
	}

	static inline void ptlrpc_reqset_put(struct ptlrpc_request_set *set)
	{
	if (atomic_dec_and_test(&set->set_refcount))
	kfree(set);
	}

	/** initialise ptlrpc common fields */
	static inline void ptlrpc_req_comm_init(struct ptlrpc_request *req)
	{
	spin_lock_init(&req->rq_lock);
	atomic_set(&req->rq_refcount, 1);
	INIT_LIST_HEAD(&req->rq_list);
	INIT_LIST_HEAD(&req->rq_replay_list);
	}

	/** initialise client side ptlrpc request */
	static inline void ptlrpc_cli_req_init(struct ptlrpc_request *req)
	{
	struct ptlrpc_cli_req *cr = &req->rq_cli;

	ptlrpc_req_comm_init(req);

	req->rq_receiving_reply = 0;
	req->rq_req_unlinked = 1;
	req->rq_reply_unlinked = 1;

	req->rq_receiving_reply = 0;
	req->rq_req_unlinked = 1;
	req->rq_reply_unlinked = 1;

	INIT_LIST_HEAD(&cr->cr_set_chain);
	INIT_LIST_HEAD(&cr->cr_ctx_chain);
	INIT_LIST_HEAD(&cr->cr_unreplied_list);
	init_waitqueue_head(&cr->cr_reply_waitq);
	init_waitqueue_head(&cr->cr_set_waitq);
	}

	/** initialise server side ptlrpc request */
	static inline void ptlrpc_srv_req_init(struct ptlrpc_request *req)
	{
	struct ptlrpc_srv_req *sr = &req->rq_srv;

	ptlrpc_req_comm_init(req);
	req->rq_srv_req = 1;
	INIT_LIST_HEAD(&sr->sr_exp_list);
	INIT_LIST_HEAD(&sr->sr_timed_list);
	INIT_LIST_HEAD(&sr->sr_hist_list);
	}

	static inline bool ptlrpc_req_is_connect(struct ptlrpc_request *req)
	{
	if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CONNECT \|\|
	lustre_msg_get_opc(req->rq_reqmsg) == OST_CONNECT \|\|
	lustre_msg_get_opc(req->rq_reqmsg) == MGS_CONNECT)
	return true;
	else
	return false;
	}

	static inline bool ptlrpc_req_is_disconnect(struct ptlrpc_request *req)
	{
	if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_DISCONNECT \|\|
	lustre_msg_get_opc(req->rq_reqmsg) == OST_DISCONNECT \|\|
	lustre_msg_get_opc(req->rq_reqmsg) == MGS_DISCONNECT)
	return true;
	else
	return false;
	}

	#endif /* PTLRPC_INTERNAL_H */