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 struct mds_idmap_table;
  15 struct mdt_idmap_table;
  16
  17 struct mds_export_data {
  18         struct list_head        med_open_head;
  19         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  20         struct mds_client_data *med_mcd;
  21         __u64                   med_ibits_known;
  22         loff_t                  med_lr_off;
  23         int                     med_lr_idx;
  24         unsigned int            med_rmtclient:1; /* remote client? */
  25         __u32                   med_nllu;
  26         __u32                   med_nllg;
  27         struct mds_idmap_table *med_idmap;
  28 };
  29
  30 struct mdt_export_data {
  31         struct list_head        med_open_head;
  32         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  33         struct semaphore        med_mcd_lock;
  34         struct mdt_client_data *med_mcd;
  35         __u64                   med_ibits_known;
  36         loff_t                  med_lr_off;
  37         int                     med_lr_idx;
  38         unsigned int            med_rmtclient:1; /* remote client? */
  39         __u32                   med_nllu;
  40         __u32                   med_nllg;
  41         struct mdt_idmap_table *med_idmap;
  42 };
  43
  44 struct osc_creator {
  45         spinlock_t              oscc_lock;
  46         struct list_head        oscc_list;
  47         struct obd_device       *oscc_obd;
  48         obd_id                  oscc_last_id;//last available pre-created object
  49         obd_id                  oscc_next_id;// what object id to give out next
  50         int                     oscc_grow_count;
  51         struct obdo             oscc_oa;
  52         int                     oscc_flags;
  53         cfs_waitq_t             oscc_waitq; /* creating procs wait on this */
  54 };
  55
  56 struct ldlm_export_data {
  57         struct list_head       led_held_locks; /* protected by namespace lock */
  58         spinlock_t             led_lock;
  59 };
  60
  61 struct ec_export_data { /* echo client */
  62         struct list_head eced_locks;
  63 };
  64
  65 /* In-memory access to client data from OST struct */
  66 struct filter_client_data;
  67 struct filter_export_data {
  68         spinlock_t                 fed_lock;      /* protects fed_open_head */
  69         struct filter_client_data *fed_fcd;
  70         loff_t                     fed_lr_off;
  71         int                        fed_lr_idx;
  72         long                       fed_dirty;    /* in bytes */
  73         long                       fed_grant;    /* in bytes */
  74         struct list_head           fed_mod_list; /* files being modified */
  75         int                        fed_mod_count;/* items in fed_writing list */
  76         long                       fed_pending;  /* bytes just being written */
  77         __u32                      fed_group;
  78 };
  79
  80 struct obd_export {
  81         struct portals_handle     exp_handle;
  82         atomic_t                  exp_refcount;
  83         atomic_t                  exp_rpc_count;
  84         struct obd_uuid           exp_client_uuid;
  85         struct list_head          exp_obd_chain;
  86         /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
  87         struct list_head          exp_obd_chain_timed;
  88         struct obd_device        *exp_obd;
  89         struct obd_import        *exp_imp_reverse; /* to make RPCs backwards */
  90         struct ptlrpc_connection *exp_connection;
  91         __u32                     exp_conn_cnt;
  92         struct ldlm_export_data   exp_ldlm_data;
  93         struct list_head          exp_outstanding_replies;
  94         time_t                    exp_last_request_time;
  95         spinlock_t                exp_lock; /* protects flags int below */
  96         /* ^ protects exp_outstanding_replies too */
  97         __u64                     exp_connect_flags;
  98         int                       exp_flags;
  99         unsigned int              exp_failed:1,
 100                                   exp_connected:1,
 101                                   exp_disconnected:1,
 102                                   exp_connecting:1,
 103                                   exp_req_replay_needed:1,
 104                                   exp_lock_replay_needed:1,
 105                                   exp_libclient:1; /* liblustre client? */
 106         union {
 107                 struct mds_export_data    eu_mds_data;
 108                 struct mdt_export_data    eu_mdt_data;
 109                 struct filter_export_data eu_filter_data;
 110                 struct ec_export_data     eu_ec_data;
 111         } u;
 112 };
 113
 114 #define exp_mds_data    u.eu_mds_data
 115 #define exp_mdt_data    u.eu_mdt_data
 116 #define exp_lov_data    u.eu_lov_data
 117 #define exp_filter_data u.eu_filter_data
 118 #define exp_ec_data     u.eu_ec_data
 119
 120 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
 121 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
 122
 123 #endif /* __EXPORT_H */