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13 * General Public License version 2 for more details (a copy is included
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 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.
36 /** \defgroup obd_export PortalRPC export definitions
44 /** \defgroup export export
49 #include "lprocfs_status.h"
50 #include "lustre/lustre_idl.h"
51 #include "lustre_dlm.h"
54 OBD_OPT_FORCE = 0x0001,
55 OBD_OPT_FAILOVER = 0x0002,
56 OBD_OPT_ABORT_RECOV = 0x0004,
60 * Export structure. Represents target-side of connection in portals.
61 * Also used in Lustre to connect between layers on the same node when
62 * there is no network-connection in-between.
63 * For every connected client there is an export structure on the server
64 * attached to the same obd device.
68 * Export handle, it's id is provided to client on connect
69 * Subsequent client RPCs contain this handle id to identify
70 * what export they are talking to.
72 struct portals_handle exp_handle;
73 atomic_t exp_refcount;
75 * Set of counters below is to track where export references are
76 * kept. The exp_rpc_count is used for reconnect handling also,
77 * the cb_count and locks_count are for debug purposes only for now.
78 * The sum of them should be less than exp_refcount by 3
80 atomic_t exp_rpc_count; /* RPC references */
81 atomic_t exp_cb_count; /* Commit callback references */
82 /** Number of queued replay requests to be processes */
83 atomic_t exp_replay_count;
84 atomic_t exp_locks_count; /** Lock references */
85 #if LUSTRE_TRACKS_LOCK_EXP_REFS
86 struct list_head exp_locks_list;
87 spinlock_t exp_locks_list_guard;
89 /** UUID of client connected to this export */
90 struct obd_uuid exp_client_uuid;
91 /** To link all exports on an obd device */
92 struct list_head exp_obd_chain;
93 struct hlist_node exp_uuid_hash; /** uuid-export hash*/
94 /** Obd device of this export */
95 struct obd_device *exp_obd;
97 * "reverse" import to send requests (e.g. from ldlm) back to client
98 * exp_lock protect its change
100 struct obd_import *exp_imp_reverse;
101 struct lprocfs_stats *exp_md_stats;
102 /** Active connection */
103 struct ptlrpc_connection *exp_connection;
104 /** Connection count value from last successful reconnect rpc */
106 /** Hash list of all ldlm locks granted on this export */
107 struct cfs_hash *exp_lock_hash;
109 * Hash list for Posix lock deadlock detection, added with
110 * ldlm_lock::l_exp_flock_hash.
112 struct cfs_hash *exp_flock_hash;
113 struct list_head exp_outstanding_replies;
114 struct list_head exp_uncommitted_replies;
115 spinlock_t exp_uncommitted_replies_lock;
116 /** Last committed transno for this export */
117 __u64 exp_last_committed;
118 /** On replay all requests waiting for replay are linked here */
119 struct list_head exp_req_replay_queue;
121 * protects exp_flags, exp_outstanding_replies and the change
125 /** Compatibility flags for this export are embedded into
128 struct obd_connect_data exp_connect_data;
129 enum obd_option exp_flags;
130 unsigned long exp_failed:1,
135 /* also protected by exp_lock */
136 enum lustre_sec_part exp_sp_peer;
137 struct sptlrpc_flavor exp_flvr; /* current */
138 struct sptlrpc_flavor exp_flvr_old[2]; /* about-to-expire */
139 time64_t exp_flvr_expire[2]; /* seconds */
141 /** protects exp_hp_rpcs */
142 spinlock_t exp_rpc_lock;
143 struct list_head exp_hp_rpcs; /* (potential) HP RPCs */
145 /** blocking dlm lock list, protected by exp_bl_list_lock */
146 struct list_head exp_bl_list;
147 spinlock_t exp_bl_list_lock;
150 static inline __u64 *exp_connect_flags_ptr(struct obd_export *exp)
152 return &exp->exp_connect_data.ocd_connect_flags;
155 static inline __u64 exp_connect_flags(struct obd_export *exp)
157 return *exp_connect_flags_ptr(exp);
160 static inline int exp_max_brw_size(struct obd_export *exp)
162 if (exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE)
163 return exp->exp_connect_data.ocd_brw_size;
165 return ONE_MB_BRW_SIZE;
168 static inline int exp_connect_multibulk(struct obd_export *exp)
170 return exp_max_brw_size(exp) > ONE_MB_BRW_SIZE;
173 static inline int exp_connect_cancelset(struct obd_export *exp)
175 return !!(exp_connect_flags(exp) & OBD_CONNECT_CANCELSET);
178 static inline int exp_connect_lru_resize(struct obd_export *exp)
180 return !!(exp_connect_flags(exp) & OBD_CONNECT_LRU_RESIZE);
183 static inline int exp_connect_rmtclient(struct obd_export *exp)
185 return !!(exp_connect_flags(exp) & OBD_CONNECT_RMT_CLIENT);
188 static inline int client_is_remote(struct obd_export *exp)
190 struct obd_import *imp = class_exp2cliimp(exp);
192 return !!(imp->imp_connect_data.ocd_connect_flags &
193 OBD_CONNECT_RMT_CLIENT);
196 static inline int exp_connect_vbr(struct obd_export *exp)
198 return !!(exp_connect_flags(exp) & OBD_CONNECT_VBR);
201 static inline int exp_connect_som(struct obd_export *exp)
203 return !!(exp_connect_flags(exp) & OBD_CONNECT_SOM);
206 static inline int exp_connect_umask(struct obd_export *exp)
208 return !!(exp_connect_flags(exp) & OBD_CONNECT_UMASK);
211 static inline int imp_connect_lru_resize(struct obd_import *imp)
213 struct obd_connect_data *ocd;
215 ocd = &imp->imp_connect_data;
216 return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
219 static inline int exp_connect_layout(struct obd_export *exp)
221 return !!(exp_connect_flags(exp) & OBD_CONNECT_LAYOUTLOCK);
224 static inline bool exp_connect_lvb_type(struct obd_export *exp)
226 if (exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE)
232 static inline bool imp_connect_lvb_type(struct obd_import *imp)
234 struct obd_connect_data *ocd;
236 ocd = &imp->imp_connect_data;
237 if (ocd->ocd_connect_flags & OBD_CONNECT_LVB_TYPE)
243 static inline __u64 exp_connect_ibits(struct obd_export *exp)
245 struct obd_connect_data *ocd;
247 ocd = &exp->exp_connect_data;
248 return ocd->ocd_ibits_known;
251 static inline bool imp_connect_disp_stripe(struct obd_import *imp)
253 struct obd_connect_data *ocd;
255 ocd = &imp->imp_connect_data;
256 return ocd->ocd_connect_flags & OBD_CONNECT_DISP_STRIPE;
259 struct obd_export *class_conn2export(struct lustre_handle *conn);
261 #define KKUC_CT_DATA_MAGIC 0x092013cea
262 struct kkuc_ct_data {
264 struct obd_uuid kcd_uuid;
270 #endif /* __EXPORT_H */