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_client_data;
  14 struct mdt_client_data;
  15 struct mds_idmap_table;
  16 struct mdt_idmap_table;
  17
  18 struct mdt_export_data {
  19         struct list_head        med_open_head;
  20         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  21         struct semaphore        med_lcd_lock;
  22         struct lsd_client_data *med_lcd;
  23         __u64                   med_ibits_known;
  24         loff_t                  med_lr_off;
  25         int                     med_lr_idx;
  26         unsigned int            med_rmtclient:1; /* remote client? */
  27         struct semaphore           med_idmap_sem;
  28         struct lustre_idmap_table *med_idmap;
  29 };
  30
  31 struct osc_creator {
  32         spinlock_t              oscc_lock;
  33         struct list_head        oscc_list;
  34         struct obd_device       *oscc_obd;
  35         obd_id                  oscc_last_id;//last available pre-created object
  36         obd_id                  oscc_next_id;// what object id to give out next
  37         int                     oscc_grow_count;
  38         int                     oscc_max_grow_count;
  39         struct obdo             oscc_oa;
  40         int                     oscc_flags;
  41         cfs_waitq_t             oscc_waitq; /* creating procs wait on this */
  42 };
  43
  44 struct ldlm_export_data {
  45         struct list_head       led_held_locks; /* protected by led_lock */
  46         spinlock_t             led_lock;
  47 };
  48
  49 struct ec_export_data { /* echo client */
  50         struct list_head eced_locks;
  51 };
  52
  53 /* In-memory access to client data from OST struct */
  54 struct filter_export_data {
  55         spinlock_t                 fed_lock;      /* protects fed_open_head */
  56         struct lsd_client_data    *fed_lcd;
  57         loff_t                     fed_lr_off;
  58         int                        fed_lr_idx;
  59         long                       fed_dirty;    /* in bytes */
  60         long                       fed_grant;    /* in bytes */
  61         struct list_head           fed_mod_list; /* files being modified */
  62         int                        fed_mod_count;/* items in fed_writing list */
  63         long                       fed_pending;  /* bytes just being written */
  64         __u32                      fed_group;
  65         struct brw_stats           fed_brw_stats;
  66 };
  67
  68 typedef struct nid_stat {
  69         lnet_nid_t               nid;
  70         struct hlist_node        nid_hash;
  71         struct list_head         nid_list;
  72         struct obd_device       *nid_obd;
  73         struct proc_dir_entry   *nid_proc;
  74         struct lprocfs_stats    *nid_stats;
  75         struct brw_stats        *nid_brw_stats;
  76         int                      nid_exp_ref_count;
  77 }nid_stat_t;
  78
  79 struct obd_export {
  80         struct portals_handle     exp_handle;
  81         atomic_t                  exp_refcount;
  82         atomic_t                  exp_rpc_count;
  83         struct obd_uuid           exp_client_uuid;
  84         struct list_head          exp_obd_chain;
  85         struct hlist_node         exp_uuid_hash; /* uuid-export hash*/
  86         struct hlist_node         exp_nid_hash; /* nid-export hash */
  87         /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
  88         struct list_head          exp_obd_chain_timed;
  89         struct obd_device        *exp_obd;
  90         struct obd_import        *exp_imp_reverse; /* to make RPCs backwards */
  91         struct nid_stat          *exp_nid_stats;
  92         struct lprocfs_stats     *exp_md_stats;
  93         struct lprocfs_stats     *exp_ldlm_stats;
  94         struct ptlrpc_connection *exp_connection;
  95         __u32                     exp_conn_cnt;
  96         struct ldlm_export_data   exp_ldlm_data;
  97         struct list_head          exp_outstanding_replies;
  98         time_t                    exp_last_request_time;
  99         struct list_head          exp_req_replay_queue;
 100         spinlock_t                exp_lock; /* protects flags int below */
 101         /* ^ protects exp_outstanding_replies too */
 102         __u64                     exp_connect_flags;
 103         int                       exp_flags;
 104         unsigned long             exp_failed:1,
 105                                   exp_in_recovery:1,
 106                                   exp_disconnected:1,
 107                                   exp_connecting:1,
 108                                   exp_req_replay_needed:1,
 109                                   exp_lock_replay_needed:1,
 110                                   exp_need_sync:1,
 111                                   exp_flvr_changed:1,
 112                                   exp_flvr_adapt:1,
 113                                   exp_libclient:1; /* liblustre client? */
 114         /* also protected by exp_lock */
 115         enum lustre_sec_part      exp_sp_peer;
 116         struct sptlrpc_flavor     exp_flvr;             /* current */
 117         struct sptlrpc_flavor     exp_flvr_old[2];      /* about-to-expire */
 118         cfs_time_t                exp_flvr_expire[2];   /* seconds */
 119
 120         union {
 121                 struct mdt_export_data    eu_mdt_data;
 122                 struct filter_export_data eu_filter_data;
 123                 struct ec_export_data     eu_ec_data;
 124         } u;
 125 };
 126
 127 #define exp_mdt_data    u.eu_mdt_data
 128 #define exp_filter_data u.eu_filter_data
 129 #define exp_ec_data     u.eu_ec_data
 130
 131 static inline int exp_connect_cancelset(struct obd_export *exp)
 132 {
 133         LASSERT(exp != NULL);
 134         return !!(exp->exp_connect_flags & OBD_CONNECT_CANCELSET);
 135 }
 136
 137 static inline int exp_connect_lru_resize(struct obd_export *exp)
 138 {
 139         LASSERT(exp != NULL);
 140         return !!(exp->exp_connect_flags & OBD_CONNECT_LRU_RESIZE);
 141 }
 142
 143 static inline int imp_connect_lru_resize(struct obd_import *imp)
 144 {
 145         struct obd_connect_data *ocd;
 146
 147         LASSERT(imp != NULL);
 148         ocd = &imp->imp_connect_data;
 149         return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
 150 }
 151
 152 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
 153 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
 154
 155 #endif /* __EXPORT_H */