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