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 struct mdt_client_data;
  14
  15 struct mds_export_data {
  16         struct list_head        med_open_head;
  17         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  18         struct mds_client_data *med_mcd;
  19         __u64                   med_ibits_known;
  20         loff_t                  med_lr_off;
  21         int                     med_lr_idx;
  22 };
  23
  24 struct mdt_export_data {
  25         struct list_head        med_open_head;
  26         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  27         struct semaphore        med_mcd_lock;
  28         struct mdt_client_data *med_mcd;
  29         __u64                   med_ibits_known;
  30         loff_t                  med_lr_off;
  31         int                     med_lr_idx;
  32 };
  33 struct osc_creator {
  34         spinlock_t              oscc_lock;
  35         struct list_head        oscc_list;
  36         struct obd_device       *oscc_obd;
  37         obd_id                  oscc_last_id;//last available pre-created object
  38         obd_id                  oscc_next_id;// what object id to give out next
  39         int                     oscc_grow_count;
  40         struct obdo             oscc_oa;
  41         int                     oscc_flags;
  42         cfs_waitq_t             oscc_waitq; /* creating procs wait on this */
  43 };
  44
  45 struct ldlm_export_data {
  46         struct list_head       led_held_locks; /* protected by namespace lock */
  47         spinlock_t             led_lock;
  48 };
  49
  50 struct ec_export_data { /* echo client */
  51         struct list_head eced_locks;
  52 };
  53
  54 /* In-memory access to client data from OST struct */
  55 struct filter_client_data;
  56 struct filter_export_data {
  57         spinlock_t                 fed_lock;      /* protects fed_open_head */
  58         struct filter_client_data *fed_fcd;
  59         loff_t                     fed_lr_off;
  60         int                        fed_lr_idx;
  61         long                       fed_dirty;    /* in bytes */
  62         long                       fed_grant;    /* in bytes */
  63         struct list_head           fed_mod_list; /* files being modified */
  64         int                        fed_mod_count;/* items in fed_writing list */
  65         long                       fed_pending;  /* bytes just being written */
  66 };
  67
  68 struct obd_export {
  69         struct portals_handle     exp_handle;
  70         atomic_t                  exp_refcount;
  71         struct obd_uuid           exp_client_uuid;
  72         struct list_head          exp_obd_chain;
  73         /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
  74         struct list_head          exp_obd_chain_timed;
  75         struct obd_device        *exp_obd;
  76         struct obd_import        *exp_imp_reverse; /* to make RPCs backwards */
  77         struct ptlrpc_connection *exp_connection;
  78         __u32                     exp_conn_cnt;
  79         struct ldlm_export_data   exp_ldlm_data;
  80         struct list_head          exp_outstanding_replies;
  81         time_t                    exp_last_request_time;
  82         spinlock_t                exp_lock; /* protects flags int below */
  83         /* ^ protects exp_outstanding_replies too */
  84         __u64                     exp_connect_flags;
  85         int                       exp_flags;
  86         unsigned int              exp_failed:1,
  87                                   exp_disconnected:1,
  88                                   exp_connecting:1,
  89                                   exp_replay_needed:1,
  90                                   exp_libclient:1; /* liblustre client? */
  91         union {
  92                 struct mds_export_data    eu_mds_data;
  93                 struct mdt_export_data    eu_mdt_data;
  94                 struct filter_export_data eu_filter_data;
  95                 struct ec_export_data     eu_ec_data;
  96         } u;
  97 };
  98
  99 #define exp_mds_data    u.eu_mds_data
 100 #define exp_mdt_data    u.eu_mdt_data
 101 #define exp_lov_data    u.eu_lov_data
 102 #define exp_filter_data u.eu_filter_data
 103 #define exp_ec_data     u.eu_ec_data
 104
 105 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
 106 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
 107
 108 #endif /* __EXPORT_H */