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) 2002, 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.
32 /** \defgroup obd_export PortalRPC export definitions
40 /** \defgroup export export
45 #include <lprocfs_status.h>
46 #include <uapi/linux/lustre/lustre_idl.h>
47 #include <lustre_dlm.h>
50 OBD_OPT_FORCE = 0x0001,
51 OBD_OPT_FAILOVER = 0x0002,
52 OBD_OPT_ABORT_RECOV = 0x0004,
56 * Export structure. Represents target-side of connection in portals.
57 * Also used in Lustre to connect between layers on the same node when
58 * there is no network-connection in-between.
59 * For every connected client there is an export structure on the server
60 * attached to the same obd device.
64 * Export handle, it's id is provided to client on connect
65 * Subsequent client RPCs contain this handle id to identify
66 * what export they are talking to.
68 struct portals_handle exp_handle;
69 atomic_t exp_refcount;
71 * Set of counters below is to track where export references are
72 * kept. The exp_rpc_count is used for reconnect handling also,
73 * the cb_count and locks_count are for debug purposes only for now.
74 * The sum of them should be less than exp_refcount by 3
76 atomic_t exp_rpc_count; /* RPC references */
77 atomic_t exp_cb_count; /* Commit callback references */
78 /** Number of queued replay requests to be processes */
79 atomic_t exp_replay_count;
80 atomic_t exp_locks_count; /** Lock references */
81 #if LUSTRE_TRACKS_LOCK_EXP_REFS
82 struct list_head exp_locks_list;
83 spinlock_t exp_locks_list_guard;
85 /** UUID of client connected to this export */
86 struct obd_uuid exp_client_uuid;
87 /** To link all exports on an obd device */
88 struct list_head exp_obd_chain;
89 struct hlist_node exp_uuid_hash; /** uuid-export hash*/
90 /** Obd device of this export */
91 struct obd_device *exp_obd;
93 * "reverse" import to send requests (e.g. from ldlm) back to client
94 * exp_lock protect its change
96 struct obd_import *exp_imp_reverse;
97 struct lprocfs_stats *exp_md_stats;
98 /** Active connection */
99 struct ptlrpc_connection *exp_connection;
100 /** Connection count value from last successful reconnect rpc */
102 /** Hash list of all ldlm locks granted on this export */
103 struct cfs_hash *exp_lock_hash;
105 * Hash list for Posix lock deadlock detection, added with
106 * ldlm_lock::l_exp_flock_hash.
108 struct cfs_hash *exp_flock_hash;
109 struct list_head exp_outstanding_replies;
110 struct list_head exp_uncommitted_replies;
111 spinlock_t exp_uncommitted_replies_lock;
112 /** Last committed transno for this export */
113 __u64 exp_last_committed;
114 /** On replay all requests waiting for replay are linked here */
115 struct list_head exp_req_replay_queue;
117 * protects exp_flags, exp_outstanding_replies and the change
121 /** Compatibility flags for this export are embedded into
124 struct obd_connect_data exp_connect_data;
125 enum obd_option exp_flags;
126 unsigned long exp_failed:1,
131 /* also protected by exp_lock */
132 enum lustre_sec_part exp_sp_peer;
133 struct sptlrpc_flavor exp_flvr; /* current */
134 struct sptlrpc_flavor exp_flvr_old[2]; /* about-to-expire */
135 time64_t exp_flvr_expire[2]; /* seconds */
137 /** protects exp_hp_rpcs */
138 spinlock_t exp_rpc_lock;
139 struct list_head exp_hp_rpcs; /* (potential) HP RPCs */
141 /** blocking dlm lock list, protected by exp_bl_list_lock */
142 struct list_head exp_bl_list;
143 spinlock_t exp_bl_list_lock;
146 static inline __u64 *exp_connect_flags_ptr(struct obd_export *exp)
148 return &exp->exp_connect_data.ocd_connect_flags;
151 static inline __u64 exp_connect_flags(struct obd_export *exp)
153 return *exp_connect_flags_ptr(exp);
156 static inline int exp_max_brw_size(struct obd_export *exp)
158 if (exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE)
159 return exp->exp_connect_data.ocd_brw_size;
161 return ONE_MB_BRW_SIZE;
164 static inline int exp_connect_multibulk(struct obd_export *exp)
166 return exp_max_brw_size(exp) > ONE_MB_BRW_SIZE;
169 static inline int exp_connect_cancelset(struct obd_export *exp)
171 return !!(exp_connect_flags(exp) & OBD_CONNECT_CANCELSET);
174 static inline int exp_connect_lru_resize(struct obd_export *exp)
176 return !!(exp_connect_flags(exp) & OBD_CONNECT_LRU_RESIZE);
179 static inline int exp_connect_vbr(struct obd_export *exp)
181 return !!(exp_connect_flags(exp) & OBD_CONNECT_VBR);
184 static inline int exp_connect_som(struct obd_export *exp)
186 return !!(exp_connect_flags(exp) & OBD_CONNECT_SOM);
189 static inline int exp_connect_umask(struct obd_export *exp)
191 return !!(exp_connect_flags(exp) & OBD_CONNECT_UMASK);
194 static inline int imp_connect_lru_resize(struct obd_import *imp)
196 struct obd_connect_data *ocd;
198 ocd = &imp->imp_connect_data;
199 return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
202 static inline int exp_connect_layout(struct obd_export *exp)
204 return !!(exp_connect_flags(exp) & OBD_CONNECT_LAYOUTLOCK);
207 static inline bool exp_connect_lvb_type(struct obd_export *exp)
209 if (exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE)
215 static inline bool imp_connect_lvb_type(struct obd_import *imp)
217 struct obd_connect_data *ocd;
219 ocd = &imp->imp_connect_data;
220 if (ocd->ocd_connect_flags & OBD_CONNECT_LVB_TYPE)
226 static inline __u64 exp_connect_ibits(struct obd_export *exp)
228 struct obd_connect_data *ocd;
230 ocd = &exp->exp_connect_data;
231 return ocd->ocd_ibits_known;
234 static inline bool imp_connect_disp_stripe(struct obd_import *imp)
236 struct obd_connect_data *ocd;
238 ocd = &imp->imp_connect_data;
239 return ocd->ocd_connect_flags & OBD_CONNECT_DISP_STRIPE;
242 struct obd_export *class_conn2export(struct lustre_handle *conn);
244 #define KKUC_CT_DATA_MAGIC 0x092013cea
245 struct kkuc_ct_data {
247 struct obd_uuid kcd_uuid;
253 #endif /* __EXPORT_H */