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 #include <lprocfs_status.h>
  11
  12 /* Data stored per client in the last_rcvd file.  In le32 order. */
  13 struct mds_export_data {
  14         struct list_head        med_open_head;
  15         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  16         struct lsd_client_data *med_lcd;
  17         __u64                   med_ibits_known;
  18         loff_t                  med_lr_off;
  19         int                     med_lr_idx;
  20 };
  21
  22 struct osc_creator {
  23         spinlock_t              oscc_lock;
  24         struct list_head        oscc_list;
  25         struct obd_device       *oscc_obd;
  26         obd_id                  oscc_last_id;//last available pre-created object
  27         obd_id                  oscc_next_id;// what object id to give out next
  28         int                     oscc_grow_count;
  29         struct obdo             oscc_oa;
  30         int                     oscc_flags;
  31         cfs_waitq_t             oscc_waitq; /* creating procs wait on this */
  32 };
  33
  34 struct ldlm_export_data {
  35         struct list_head       led_held_locks; /* protected by led_lock below */
  36         spinlock_t             led_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_export_data {
  45         spinlock_t                 fed_lock;      /* protects fed_open_head */
  46         struct lsd_client_data    *fed_lcd;
  47         loff_t                     fed_lr_off;
  48         int                        fed_lr_idx;
  49         long                       fed_dirty;    /* in bytes */
  50         long                       fed_grant;    /* in bytes */
  51         struct list_head           fed_mod_list; /* files being modified */
  52         int                        fed_mod_count;/* items in fed_writing list */
  53         long                       fed_pending;  /* bytes just being written */
  54         struct brw_stats           fed_brw_stats;
  55 };
  56
  57 typedef struct nid_stat {
  58         lnet_nid_t               nid;
  59         struct hlist_node        nid_hash;
  60         struct list_head         nid_list;
  61         struct obd_device       *nid_obd;
  62         struct proc_dir_entry   *nid_proc;
  63         struct lprocfs_stats    *nid_stats;
  64         struct brw_stats        *nid_brw_stats;
  65         int                      nid_exp_ref_count;
  66 }nid_stat_t;
  67
  68 struct obd_export {
  69         struct portals_handle     exp_handle;
  70         atomic_t                  exp_refcount;
  71         atomic_t                  exp_rpc_count;
  72         struct obd_uuid           exp_client_uuid;
  73         struct list_head          exp_obd_chain;
  74         struct hlist_node         exp_uuid_hash; /* uuid-export hash*/
  75         struct hlist_node         exp_nid_hash; /* nid-export hash */
  76         /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
  77         struct list_head          exp_obd_chain_timed;
  78         struct obd_device        *exp_obd;
  79         struct obd_import        *exp_imp_reverse; /* to make RPCs backwards */
  80         struct nid_stat          *exp_nid_stats;
  81         struct lprocfs_stats     *exp_ldlm_stats;
  82         struct lprocfs_stats     *exp_ops_stats;
  83         struct ptlrpc_connection *exp_connection;
  84         __u32                     exp_conn_cnt;
  85         struct ldlm_export_data   exp_ldlm_data;
  86         struct list_head          exp_outstanding_replies;
  87         time_t                    exp_last_request_time;
  88         struct list_head          exp_req_replay_queue;
  89         spinlock_t                exp_lock; /* protects flags int below */
  90         /* ^ protects exp_outstanding_replies too */
  91         __u64                     exp_connect_flags;
  92         int                       exp_flags;
  93         unsigned long             exp_failed:1,
  94                                   exp_disconnected:1,
  95                                   exp_connecting:1,
  96                                   exp_replay_needed:1,
  97                                   exp_need_sync:1, /* needs sync from connect */
  98                                   exp_libclient:1; /* liblustre client? */
  99         union {
 100                 struct mds_export_data    eu_mds_data;
 101                 struct filter_export_data eu_filter_data;
 102                 struct ec_export_data     eu_ec_data;
 103         } u;
 104 };
 105
 106 #define exp_mds_data    u.eu_mds_data
 107 #define exp_lov_data    u.eu_lov_data
 108 #define exp_filter_data u.eu_filter_data
 109 #define exp_ec_data     u.eu_ec_data
 110
 111 static inline int exp_connect_cancelset(struct obd_export *exp)
 112 {
 113         LASSERT(exp != NULL);
 114         return !!(exp->exp_connect_flags & OBD_CONNECT_CANCELSET);
 115 }
 116
 117 static inline int exp_connect_lru_resize(struct obd_export *exp)
 118 {
 119         LASSERT(exp != NULL);
 120         return !!(exp->exp_connect_flags & OBD_CONNECT_LRU_RESIZE);
 121 }
 122
 123 static inline int imp_connect_lru_resize(struct obd_import *imp)
 124 {
 125         struct obd_connect_data *ocd;
 126
 127         LASSERT(imp != NULL);
 128         ocd = &imp->imp_connect_data;
 129         return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
 130 }
 131
 132 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
 133 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
 134
 135 #endif /* __EXPORT_H */