lustre/include/lustre_export.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4
   5 #ifndef __EXPORT_H
   6 #define __EXPORT_H
   7
   8 #include <lustre/lustre_idl.h>
   9 #include <lustre_dlm.h>
  10
  11 /* Data stored per client in the last_rcvd file.  In le32 order. */
  12 struct mds_client_data;
  13
  14 struct mds_export_data {
  15         struct list_head        med_open_head;
  16         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  17         struct mds_client_data *med_mcd;
  18         __u64                   med_ibits_known;
  19         loff_t                  med_lr_off;
  20         int                     med_lr_idx;
  21 };
  22
  23 struct osc_creator {
  24         spinlock_t              oscc_lock;
  25         struct list_head        oscc_list;
  26         struct obd_device       *oscc_obd;
  27         obd_id                  oscc_last_id;//last available pre-created object
  28         obd_id                  oscc_next_id;// what object id to give out next
  29         int                     oscc_grow_count;
  30         struct obdo             oscc_oa;
  31         int                     oscc_flags;
  32         cfs_waitq_t             oscc_waitq; /* creating procs wait on this */
  33 };
  34
  35 struct ldlm_export_data {
  36         struct list_head       led_held_locks; /* protected by namespace lock */
  37 };
  38
  39 struct ec_export_data { /* echo client */
  40         struct list_head eced_locks;
  41 };
  42
  43 /* In-memory access to client data from OST struct */
  44 struct filter_client_data;
  45 struct filter_export_data {
  46         spinlock_t                 fed_lock;      /* protects fed_open_head */
  47         struct filter_client_data *fed_fcd;
  48         loff_t                     fed_lr_off;
  49         int                        fed_lr_idx;
  50         long                       fed_dirty;    /* in bytes */
  51         long                       fed_grant;    /* in bytes */
  52         long                       fed_pending;  /* bytes just being written */
  53 };
  54
  55 struct obd_export {
  56         struct portals_handle     exp_handle;
  57         atomic_t                  exp_refcount;
  58         struct obd_uuid           exp_client_uuid;
  59         struct list_head          exp_obd_chain;
  60         /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
  61         struct list_head          exp_obd_chain_timed;
  62         struct obd_device        *exp_obd;
  63         struct obd_import        *exp_imp_reverse; /* to make RPCs backwards */
  64         struct ptlrpc_connection *exp_connection;
  65         __u32                     exp_conn_cnt;
  66         struct ldlm_export_data   exp_ldlm_data;
  67         struct list_head          exp_outstanding_replies;
  68         time_t                    exp_last_request_time;
  69         spinlock_t                exp_lock; /* protects flags int below */
  70         /* ^ protects exp_outstanding_replies too */
  71         __u64                     exp_connect_flags;
  72         int                       exp_flags;
  73         unsigned int              exp_failed:1,
  74                                   exp_disconnected:1,
  75                                   exp_connecting:1,
  76                                   exp_replay_needed:1,
  77                                   exp_libclient:1; /* liblustre client? */
  78         union {
  79                 struct mds_export_data    eu_mds_data;
  80                 struct filter_export_data eu_filter_data;
  81                 struct ec_export_data     eu_ec_data;
  82         } u;
  83 };
  84
  85 #define exp_mds_data    u.eu_mds_data
  86 #define exp_lov_data    u.eu_lov_data
  87 #define exp_filter_data u.eu_filter_data
  88 #define exp_ec_data     u.eu_ec_data
  89
  90 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
  91 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
  92
  93 #endif /* __EXPORT_H */