1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
13 #include <linux/lustre_handles.h>
14 #include <linux/lustre_idl.h>
16 enum lustre_imp_state {
17 LUSTRE_IMP_CLOSED = 1,
19 LUSTRE_IMP_DISCON = 3,
20 LUSTRE_IMP_CONNECTING = 4,
21 LUSTRE_IMP_REPLAY = 5,
22 LUSTRE_IMP_REPLAY_LOCKS = 6,
23 LUSTRE_IMP_REPLAY_WAIT = 7,
24 LUSTRE_IMP_RECOVER = 8,
26 LUSTRE_IMP_EVICTED = 10,
29 static inline char * ptlrpc_import_state_name(enum lustre_imp_state state)
32 static char* import_state_names[] = {
33 "<UNKNOWN>", "CLOSED", "NEW", "DISCONN",
34 "CONNECTING", "REPLAY", "REPLAY_LOCKS", "REPLAY_WAIT",
35 "RECOVER", "FULL", "EVICTED",
38 LASSERT (state <= LUSTRE_IMP_EVICTED);
39 return import_state_names[state];
42 enum obd_import_event {
43 IMP_EVENT_DISCON = 0x808001,
44 IMP_EVENT_INACTIVE = 0x808002,
45 IMP_EVENT_INVALIDATE = 0x808003,
46 IMP_EVENT_ACTIVE = 0x808004,
51 struct obd_import_conn {
52 struct list_head oic_item;
53 struct ptlrpc_connection *oic_conn;
54 struct obd_uuid oic_uuid;
55 unsigned long oic_last_attempt; /* in jiffies */
59 struct portals_handle imp_handle;
60 atomic_t imp_refcount;
61 struct lustre_handle imp_dlm_handle; /* client's ldlm export */
62 struct ptlrpc_connection *imp_connection;
63 struct ptlrpc_client *imp_client;
64 struct list_head imp_observers;
65 struct list_head imp_pinger_chain;
67 /* Lists of requests that are retained for replay, waiting for a reply,
68 * or waiting for recovery to complete, respectively.
70 struct list_head imp_replay_list;
71 struct list_head imp_sending_list;
72 struct list_head imp_delayed_list;
74 /* list of ongoing raw rpcs (only used by gss) */
75 struct list_head imp_rawrpc_list;
77 struct obd_device *imp_obd;
78 struct ptlrpc_sec *imp_sec;
79 wait_queue_head_t imp_recovery_waitq;
80 __u64 imp_last_replay_transno;
81 atomic_t imp_inflight;
82 atomic_t imp_replay_inflight;
83 enum lustre_imp_state imp_state;
86 __u64 imp_max_transno;
87 __u64 imp_peer_committed_transno;
88 struct obd_uuid imp_target_uuid; /* XXX -> lustre_name */
89 struct lustre_handle imp_remote_handle;
90 unsigned long imp_next_ping;
91 unsigned long imp_connect_start;
93 /* all available obd_import_conn linked here */
94 struct list_head imp_conn_list;
95 struct obd_import_conn *imp_conn_current;
97 /* Protects flags, level, generation, conn_cnt, *_list */
101 int imp_invalid:1, imp_replayable:1,
102 imp_dlm_fake:1, imp_server_timeout:1,
103 imp_initial_recov:1, imp_force_verify:1,
104 imp_pingable:1, imp_resend_replay:1;
105 __u32 imp_connect_op;
106 __u32 imp_connect_flags;
109 typedef void (*obd_import_callback)(struct obd_import *imp, void *closure,
110 int event, void *event_arg, void *cb_data);
112 struct obd_import_observer {
113 struct list_head oio_chain;
114 obd_import_callback oio_cb;
118 void class_observe_import(struct obd_import *imp, obd_import_callback cb,
120 void class_unobserve_import(struct obd_import *imp, obd_import_callback cb,
122 void class_notify_import_observers(struct obd_import *imp, int event,
125 #define IMP_EVENT_ACTIVE 1
126 #define IMP_EVENT_INACTIVE 2
130 extern struct obd_import *class_exp2cliimp(struct obd_export *);
131 extern struct obd_import *class_conn2cliimp(struct lustre_handle *);
133 #endif /* __IMPORT_H */