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 mds_export_data {
  19         struct list_head        med_open_head;
  20         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
  21         struct mds_client_data *med_mcd;
  22         __u64                   med_ibits_known;
  23         loff_t                  med_lr_off;
  24         int                     med_lr_idx;
  25         unsigned int            med_rmtclient:1; /* remote client? */
  26         struct semaphore           med_idmap_sem;
  27         struct lustre_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         struct semaphore           med_idmap_sem;
  40         struct lustre_idmap_table *med_idmap;
  41 };
  42
  43 struct osc_creator {
  44         spinlock_t              oscc_lock;
  45         struct list_head        oscc_list;
  46         struct obd_device       *oscc_obd;
  47         obd_id                  oscc_last_id;//last available pre-created object
  48         obd_id                  oscc_next_id;// what object id to give out next
  49         int                     oscc_grow_count;
  50         struct obdo             oscc_oa;
  51         int                     oscc_flags;
  52         cfs_waitq_t             oscc_waitq; /* creating procs wait on this */
  53 };
  54
  55 struct ldlm_export_data {
  56         struct list_head       led_held_locks; /* protected by led_lock */
  57         spinlock_t             led_lock;
  58 };
  59
  60 struct ec_export_data { /* echo client */
  61         struct list_head eced_locks;
  62 };
  63
  64 /* In-memory access to client data from OST struct */
  65 struct filter_client_data;
  66 struct filter_export_data {
  67         spinlock_t                 fed_lock;      /* protects fed_open_head */
  68         struct filter_client_data *fed_fcd;
  69         loff_t                     fed_lr_off;
  70         int                        fed_lr_idx;
  71         long                       fed_dirty;    /* in bytes */
  72         long                       fed_grant;    /* in bytes */
  73         struct list_head           fed_mod_list; /* files being modified */
  74         int                        fed_mod_count;/* items in fed_writing list */
  75         long                       fed_pending;  /* bytes just being written */
  76         __u32                      fed_group;
  77         struct brw_stats           fed_brw_stats;
  78 };
  79
  80 typedef struct nid_stat {
  81         lnet_nid_t               nid;
  82         struct hlist_node        nid_hash;
  83         struct list_head         nid_list;
  84         struct obd_device       *nid_obd;
  85         struct proc_dir_entry   *nid_proc;
  86         struct lprocfs_stats    *nid_stats;
  87         struct brw_stats        *nid_brw_stats;
  88         int                      nid_exp_ref_count;
  89 }nid_stat_t;
  90
  91 struct obd_export {
  92         struct portals_handle     exp_handle;
  93         atomic_t                  exp_refcount;
  94         atomic_t                  exp_rpc_count;
  95         struct obd_uuid           exp_client_uuid;
  96         struct list_head          exp_obd_chain;
  97         struct hlist_node         exp_uuid_hash; /* uuid-export hash*/
  98         struct hlist_node         exp_nid_hash; /* nid-export hash */
  99         /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
 100         struct list_head          exp_obd_chain_timed;
 101         struct obd_device        *exp_obd;
 102         struct obd_import        *exp_imp_reverse; /* to make RPCs backwards */
 103         struct nid_stat          *exp_nid_stats;
 104         struct lprocfs_stats     *exp_md_stats;
 105         struct lprocfs_stats     *exp_ldlm_stats;
 106         struct ptlrpc_connection *exp_connection;
 107         __u32                     exp_conn_cnt;
 108         struct ldlm_export_data   exp_ldlm_data;
 109         struct list_head          exp_outstanding_replies;
 110         time_t                    exp_last_request_time;
 111         spinlock_t                exp_lock; /* protects flags int below */
 112         /* ^ protects exp_outstanding_replies too */
 113         __u64                     exp_connect_flags;
 114         int                       exp_flags;
 115         unsigned long             exp_failed:1,
 116                                   exp_in_recovery:1,
 117                                   exp_disconnected:1,
 118                                   exp_connecting:1,
 119                                   exp_req_replay_needed:1,
 120                                   exp_lock_replay_needed:1,
 121                                   exp_need_sync:1,
 122                                   exp_flvr_changed:1,
 123                                   exp_flvr_adapt:1,
 124                                   exp_libclient:1; /* liblustre client? */
 125         /* also protected by exp_lock */
 126         enum lustre_sec_part      exp_sp_peer;
 127         struct sptlrpc_flavor     exp_flvr;             /* current */
 128         struct sptlrpc_flavor     exp_flvr_old[2];      /* about-to-expire */
 129         cfs_time_t                exp_flvr_expire[2];   /* seconds */
 130
 131         union {
 132                 struct mds_export_data    eu_mds_data;
 133                 struct mdt_export_data    eu_mdt_data;
 134                 struct filter_export_data eu_filter_data;
 135                 struct ec_export_data     eu_ec_data;
 136         } u;
 137 };
 138
 139 #define exp_mds_data    u.eu_mds_data
 140 #define exp_mdt_data    u.eu_mdt_data
 141 #define exp_lov_data    u.eu_lov_data
 142 #define exp_filter_data u.eu_filter_data
 143 #define exp_ec_data     u.eu_ec_data
 144
 145 static inline int exp_connect_cancelset(struct obd_export *exp)
 146 {
 147         LASSERT(exp != NULL);
 148         return !!(exp->exp_connect_flags & OBD_CONNECT_CANCELSET);
 149 }
 150
 151 static inline int exp_connect_lru_resize(struct obd_export *exp)
 152 {
 153         LASSERT(exp != NULL);
 154         return !!(exp->exp_connect_flags & OBD_CONNECT_LRU_RESIZE);
 155 }
 156
 157 static inline int imp_connect_lru_resize(struct obd_import *imp)
 158 {
 159         struct obd_connect_data *ocd;
 160
 161         LASSERT(imp != NULL);
 162         ocd = &imp->imp_connect_data;
 163         return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
 164 }
 165
 166 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
 167 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
 168
 169 #endif /* __EXPORT_H */