Whamcloud - gitweb
LU-1330 obdclass: add obd_target.h
[fs/lustre-release.git] / lustre / include / obd_class.h
index a9f86f8..029b21e 100644 (file)
@@ -27,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, Whamcloud, Inc.
+ * Copyright (c) 2011, 2013, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
                                          * interpret routine to be called.
                                          * lov_statfs_fini() must thus be called
                                          * by the request interpret routine */
-
+#define OBD_STATFS_FOR_MDT0    0x0008  /* The statfs is only for retrieving
+                                        * information from MDT0. */
 #define OBD_FL_PUNCH    0x00000001      /* To indicate it is punch operation */
 
 /* OBD Device Declarations */
 extern struct obd_device *obd_devs[MAX_OBD_DEVICES];
-extern cfs_rwlock_t obd_dev_lock;
+extern rwlock_t obd_dev_lock;
 
 /* OBD Operations Declarations */
 extern struct obd_device *class_conn2obd(struct lustre_handle *);
@@ -104,6 +105,7 @@ struct obd_device * class_find_client_obd(struct obd_uuid *tgt_uuid,
 struct obd_device * class_devices_in_group(struct obd_uuid *grp_uuid,
                                            int *next);
 struct obd_device * class_num2obd(int num);
+int get_devices_count(void);
 
 int class_notify_sptlrpc_conf(const char *fsname, int namelen);
 
@@ -124,7 +126,13 @@ int kuc_ispayload(void *p);
 void *kuc_alloc(int payload_len, int transport, int type);
 void kuc_free(void *p, int payload_len);
 
+struct llog_handle;
+struct llog_rec_hdr;
+typedef int (*llog_cb_t)(const struct lu_env *, struct llog_handle *,
+                        struct llog_rec_hdr *, void *);
 /* obd_config.c */
+struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
+                                    const char *new_name);
 int class_process_config(struct lustre_cfg *lcfg);
 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
                              struct lustre_cfg *lcfg, void *data);
@@ -137,6 +145,11 @@ struct obd_device *class_incref(struct obd_device *obd,
 void class_decref(struct obd_device *obd,
                   const char *scope, const void *source);
 void dump_exports(struct obd_device *obd, int locks);
+int class_config_llog_handler(const struct lu_env *env,
+                             struct llog_handle *handle,
+                             struct llog_rec_hdr *rec, void *data);
+int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg);
+int class_add_uuid(const char *uuid, __u64 nid);
 
 /*obdecho*/
 #ifdef LPROCFS
@@ -160,13 +173,14 @@ struct config_llog_instance {
         void               *cfg_instance;
         struct super_block *cfg_sb;
         struct obd_uuid     cfg_uuid;
+       llog_cb_t           cfg_callback;
         int                 cfg_last_idx; /* for partial llog processing */
         int                 cfg_flags;
 };
-int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
-                            struct config_llog_instance *cfg);
-int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
-                           struct config_llog_instance *cfg);
+int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
+                           char *name, struct config_llog_instance *cfg);
+int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
+                          char *name, struct config_llog_instance *cfg);
 
 enum {
         CONFIG_T_CONFIG  = 0,
@@ -184,7 +198,7 @@ struct config_llog_data {
         struct config_llog_data    *cld_sptlrpc;/* depended sptlrpc log */
         struct config_llog_data    *cld_recover;    /* imperative recover log */
         struct obd_export          *cld_mgcexp;
-        cfs_mutex_t                 cld_lock;
+       struct mutex                cld_lock;
         int                         cld_type;
         unsigned int                cld_stopping:1, /* we were told to stop
                                                      * watching */
@@ -216,21 +230,19 @@ extern void (*class_export_dump_hook)(struct obd_export *);
 
 #endif
 
-#define class_export_rpc_get(exp)                                       \
+#define class_export_rpc_inc(exp)                                       \
 ({                                                                      \
         cfs_atomic_inc(&(exp)->exp_rpc_count);                          \
         CDEBUG(D_INFO, "RPC GETting export %p : new rpc_count %d\n",    \
                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
-        class_export_get(exp);                                          \
 })
 
-#define class_export_rpc_put(exp)                                       \
+#define class_export_rpc_dec(exp)                                       \
 ({                                                                      \
         LASSERT_ATOMIC_POS(&exp->exp_rpc_count);                        \
         cfs_atomic_dec(&(exp)->exp_rpc_count);                          \
         CDEBUG(D_INFO, "RPC PUTting export %p : new rpc_count %d\n",    \
                (exp), cfs_atomic_read(&(exp)->exp_rpc_count));          \
-        class_export_put(exp);                                          \
 })
 
 #define class_export_lock_get(exp, lock)                                \
@@ -324,6 +336,9 @@ void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid);
 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
                   unsigned int valid);
 
+void obdo_cpu_to_le(struct obdo *dobdo, struct obdo *sobdo);
+void obdo_le_to_cpu(struct obdo *dobdo, struct obdo *sobdo);
+
 #define OBT(dev)        (dev)->obd_type
 #define OBP(dev, op)    (dev)->obd_type->typ_dt_ops->o_ ## op
 #define MDP(dev, op)    (dev)->obd_type->typ_md_ops->m_ ## op
@@ -650,7 +665,7 @@ static inline void obd_cleanup_client_import(struct obd_device *obd)
 
         /* If we set up but never connected, the
            client import will not have been cleaned. */
-        cfs_down_write(&obd->u.cli.cl_sem);
+       down_write(&obd->u.cli.cl_sem);
         if (obd->u.cli.cl_import) {
                 struct obd_import *imp;
                 imp = obd->u.cli.cl_import;
@@ -664,7 +679,7 @@ static inline void obd_cleanup_client_import(struct obd_device *obd)
                 client_destroy_import(imp);
                 obd->u.cli.cl_import = NULL;
         }
-        cfs_up_write(&obd->u.cli.cl_sem);
+       up_write(&obd->u.cli.cl_sem);
 
         EXIT;
 }
@@ -736,11 +751,21 @@ static inline int obd_alloc_diskmd(struct obd_export *exp,
 }
 
 static inline int obd_free_diskmd(struct obd_export *exp,
-                                  struct lov_mds_md **disk_tgt)
-{
-        LASSERT(disk_tgt);
-        LASSERT(*disk_tgt);
-        return obd_packmd(exp, disk_tgt, NULL);
+                                 struct lov_mds_md **disk_tgt)
+{
+       LASSERT(disk_tgt);
+       LASSERT(*disk_tgt);
+       /*
+        * LU-2590, for caller's convenience, *disk_tgt could be host
+        * endianness, it needs swab to LE if necessary, while just
+        * lov_mds_md header needs it for figuring out how much memory
+        * needs to be freed.
+        */
+       if ((cpu_to_le32(LOV_MAGIC) != LOV_MAGIC) &&
+           (((*disk_tgt)->lmm_magic == LOV_MAGIC_V1) ||
+            ((*disk_tgt)->lmm_magic == LOV_MAGIC_V3)))
+               lustre_swab_lov_mds_md(*disk_tgt);
+       return obd_packmd(exp, disk_tgt, NULL);
 }
 
 /* Unpack an MD struct from disk to in-memory format.
@@ -1027,28 +1052,29 @@ static inline int obd_disconnect(struct obd_export *exp)
         RETURN(rc);
 }
 
-static inline int obd_fid_init(struct obd_export *exp)
+static inline int obd_fid_init(struct obd_device *obd, struct obd_export *exp,
+                              enum lu_cli_type type)
 {
-        int rc;
-        ENTRY;
+       int rc;
+       ENTRY;
 
-        OBD_CHECK_DT_OP(exp->exp_obd, fid_init, 0);
-        EXP_COUNTER_INCREMENT(exp, fid_init);
+       OBD_CHECK_DT_OP(obd, fid_init, 0);
+       OBD_COUNTER_INCREMENT(obd, fid_init);
 
-        rc = OBP(exp->exp_obd, fid_init)(exp);
-        RETURN(rc);
+       rc = OBP(obd, fid_init)(obd, exp, type);
+       RETURN(rc);
 }
 
-static inline int obd_fid_fini(struct obd_export *exp)
+static inline int obd_fid_fini(struct obd_device *obd)
 {
-        int rc;
-        ENTRY;
+       int rc;
+       ENTRY;
 
-        OBD_CHECK_DT_OP(exp->exp_obd, fid_fini, 0);
-        EXP_COUNTER_INCREMENT(exp, fid_fini);
+       OBD_CHECK_DT_OP(obd, fid_fini, 0);
+       OBD_COUNTER_INCREMENT(obd, fid_fini);
 
-        rc = OBP(exp->exp_obd, fid_fini)(exp);
-        RETURN(rc);
+       rc = OBP(obd, fid_fini)(obd);
+       RETURN(rc);
 }
 
 static inline int obd_fid_alloc(struct obd_export *exp,
@@ -1065,19 +1091,6 @@ static inline int obd_fid_alloc(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_fid_delete(struct obd_export *exp,
-                                 const struct lu_fid *fid)
-{
-        int rc;
-        ENTRY;
-
-        EXP_CHECK_DT_OP(exp, fid_delete);
-        EXP_COUNTER_INCREMENT(exp, fid_delete);
-
-        rc = OBP(exp->exp_obd, fid_delete)(exp, fid);
-        RETURN(rc);
-}
-
 static inline int obd_ping(const struct lu_env *env, struct obd_export *exp)
 {
         int rc;
@@ -1190,24 +1203,13 @@ static inline int obd_extent_calc(struct obd_export *exp,
 }
 
 static inline struct dentry *
-obd_lvfs_fid2dentry(struct obd_export *exp, __u64 id_ino, __u32 gen, __u64 gr)
+obd_lvfs_fid2dentry(struct obd_export *exp, struct ost_id *oi, __u32 gen)
 {
-        LASSERT(exp->exp_obd);
-
-        return lvfs_fid2dentry(&exp->exp_obd->obd_lvfs_ctxt, id_ino, gen, gr,
-                               exp->exp_obd);
-}
+       struct lvfs_run_ctxt *ctxt = &exp->exp_obd->obd_lvfs_ctxt;
+       LASSERT(exp->exp_obd);
 
-static inline int
-obd_lvfs_open_llog(struct obd_export *exp, __u64 id_ino, struct dentry *dentry)
-{
-        LASSERT(exp->exp_obd);
-        CERROR("FIXME what's the story here?  This needs to be an obd fn?\n");
-#if 0
-        return lvfs_open_llog(&exp->exp_obd->obd_lvfs_ctxt, id_ino,
-                              dentry, exp->exp_obd);
-#endif
-        return 0;
+       return ctxt->cb_ops.l_fid2dentry(ostid_id(oi), gen, ostid_seq(oi),
+                                        exp->exp_obd);
 }
 
 /* @max_age is the oldest time in jiffies that we accept using a cached data.
@@ -1239,9 +1241,9 @@ static inline int obd_statfs_async(struct obd_export *exp,
                        obd->obd_name, &obd->obd_osfs,
                        obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
                        obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
-                cfs_spin_lock(&obd->obd_osfs_lock);
-                memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
-                cfs_spin_unlock(&obd->obd_osfs_lock);
+               spin_lock(&obd->obd_osfs_lock);
+               memcpy(oinfo->oi_osfs, &obd->obd_osfs, sizeof(*oinfo->oi_osfs));
+               spin_unlock(&obd->obd_osfs_lock);
                 oinfo->oi_flags |= OBD_STATFS_FROM_CACHE;
                 if (oinfo->oi_cb_up)
                         oinfo->oi_cb_up(oinfo, 0);
@@ -1293,22 +1295,22 @@ static inline int obd_statfs(const struct lu_env *env, struct obd_export *exp,
         if (cfs_time_before_64(obd->obd_osfs_age, max_age)) {
                 rc = OBP(obd, statfs)(env, exp, osfs, max_age, flags);
                 if (rc == 0) {
-                        cfs_spin_lock(&obd->obd_osfs_lock);
-                        memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
-                        obd->obd_osfs_age = cfs_time_current_64();
-                        cfs_spin_unlock(&obd->obd_osfs_lock);
-                }
-        } else {
-                CDEBUG(D_SUPER,"%s: use %p cache blocks "LPU64"/"LPU64
-                       " objects "LPU64"/"LPU64"\n",
-                       obd->obd_name, &obd->obd_osfs,
-                       obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
-                       obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
-                cfs_spin_lock(&obd->obd_osfs_lock);
-                memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
-                cfs_spin_unlock(&obd->obd_osfs_lock);
-        }
-        RETURN(rc);
+                       spin_lock(&obd->obd_osfs_lock);
+                       memcpy(&obd->obd_osfs, osfs, sizeof(obd->obd_osfs));
+                       obd->obd_osfs_age = cfs_time_current_64();
+                       spin_unlock(&obd->obd_osfs_lock);
+               }
+       } else {
+               CDEBUG(D_SUPER, "%s: use %p cache blocks "LPU64"/"LPU64
+                      " objects "LPU64"/"LPU64"\n",
+                      obd->obd_name, &obd->obd_osfs,
+                      obd->obd_osfs.os_bavail, obd->obd_osfs.os_blocks,
+                      obd->obd_osfs.os_ffree, obd->obd_osfs.os_files);
+               spin_lock(&obd->obd_osfs_lock);
+               memcpy(osfs, &obd->obd_osfs, sizeof(*osfs));
+               spin_unlock(&obd->obd_osfs_lock);
+       }
+       RETURN(rc);
 }
 
 static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
@@ -1713,39 +1715,6 @@ static inline int obd_quotactl(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline int obd_quota_adjust_qunit(struct obd_export *exp,
-                                         struct quota_adjust_qunit *oqaq,
-                                         struct lustre_quota_ctxt *qctxt,
-                                         struct ptlrpc_request_set *set)
-{
-#if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
-        struct timeval work_start;
-        struct timeval work_end;
-        long timediff;
-#endif
-        int rc;
-        ENTRY;
-
-#if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
-        if (qctxt)
-                cfs_gettimeofday(&work_start);
-#endif
-        EXP_CHECK_DT_OP(exp, quota_adjust_qunit);
-        EXP_COUNTER_INCREMENT(exp, quota_adjust_qunit);
-
-        rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt, set);
-
-#if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
-        if (qctxt) {
-                cfs_gettimeofday(&work_end);
-                timediff = cfs_timeval_sub(&work_end, &work_start, NULL);
-                lprocfs_counter_add(qctxt->lqc_stats, LQUOTA_ADJUST_QUNIT,
-                                    timediff);
-        }
-#endif
-        RETURN(rc);
-}
-
 static inline int obd_health_check(const struct lu_env *env,
                                    struct obd_device *obd)
 {
@@ -1778,13 +1747,13 @@ static inline int obd_register_observer(struct obd_device *obd,
 {
         ENTRY;
         OBD_CHECK_DEV(obd);
-        cfs_down_write(&obd->obd_observer_link_sem);
+       down_write(&obd->obd_observer_link_sem);
         if (obd->obd_observer && observer) {
-                cfs_up_write(&obd->obd_observer_link_sem);
+               up_write(&obd->obd_observer_link_sem);
                 RETURN(-EALREADY);
         }
         obd->obd_observer = observer;
-        cfs_up_write(&obd->obd_observer_link_sem);
+       up_write(&obd->obd_observer_link_sem);
         RETURN(0);
 }
 
@@ -1792,10 +1761,10 @@ static inline int obd_pin_observer(struct obd_device *obd,
                                    struct obd_device **observer)
 {
         ENTRY;
-        cfs_down_read(&obd->obd_observer_link_sem);
+       down_read(&obd->obd_observer_link_sem);
         if (!obd->obd_observer) {
                 *observer = NULL;
-                cfs_up_read(&obd->obd_observer_link_sem);
+               up_read(&obd->obd_observer_link_sem);
                 RETURN(-ENOENT);
         }
         *observer = obd->obd_observer;
@@ -1805,7 +1774,7 @@ static inline int obd_pin_observer(struct obd_device *obd,
 static inline int obd_unpin_observer(struct obd_device *obd)
 {
         ENTRY;
-        cfs_up_read(&obd->obd_observer_link_sem);
+       up_read(&obd->obd_observer_link_sem);
         RETURN(0);
 }
 
@@ -1888,15 +1857,14 @@ static inline int md_getattr(struct obd_export *exp, struct md_op_data *op_data,
         RETURN(rc);
 }
 
-static inline int md_change_cbdata(struct obd_export *exp,
-                                   const struct lu_fid *fid,
-                                   ldlm_iterator_t it, void *data)
+static inline int md_null_inode(struct obd_export *exp,
+                                   const struct lu_fid *fid)
 {
         int rc;
         ENTRY;
-        EXP_CHECK_MD_OP(exp, change_cbdata);
-        EXP_MD_COUNTER_INCREMENT(exp, change_cbdata);
-        rc = MDP(exp->exp_obd, change_cbdata)(exp, fid, it, data);
+        EXP_CHECK_MD_OP(exp, null_inode);
+        EXP_MD_COUNTER_INCREMENT(exp, null_inode);
+        rc = MDP(exp->exp_obd, null_inode)(exp, fid);
         RETURN(rc);
 }
 
@@ -1981,18 +1949,18 @@ static inline int md_getattr_name(struct obd_export *exp,
 }
 
 static inline int md_intent_lock(struct obd_export *exp,
-                                 struct md_op_data *op_data, void *lmm,
-                                 int lmmsize, struct lookup_intent *it,
-                                 int flags, struct ptlrpc_request **reqp,
-                                 ldlm_blocking_callback cb_blocking,
-                                 int extra_lock_flags)
+                                struct md_op_data *op_data, void *lmm,
+                                int lmmsize, struct lookup_intent *it,
+                                int lookup_flags, struct ptlrpc_request **reqp,
+                                ldlm_blocking_callback cb_blocking,
+                                __u64 extra_lock_flags)
 {
         int rc;
         ENTRY;
         EXP_CHECK_MD_OP(exp, intent_lock);
         EXP_MD_COUNTER_INCREMENT(exp, intent_lock);
         rc = MDP(exp->exp_obd, intent_lock)(exp, op_data, lmm, lmmsize,
-                                            it, flags, reqp, cb_blocking,
+                                            it, lookup_flags, reqp, cb_blocking,
                                             extra_lock_flags);
         RETURN(rc);
 }
@@ -2179,7 +2147,7 @@ static inline int md_cancel_unused(struct obd_export *exp,
         RETURN(rc);
 }
 
-static inline ldlm_mode_t md_lock_match(struct obd_export *exp, int flags,
+static inline ldlm_mode_t md_lock_match(struct obd_export *exp, __u64 flags,
                                         const struct lu_fid *fid,
                                         ldlm_type_t type,
                                         ldlm_policy_data_t *policy,
@@ -2270,11 +2238,11 @@ extern int obd_init_caches(void);
 extern void obd_cleanup_caches(void);
 
 /* support routines */
-extern cfs_mem_cache_t *obdo_cachep;
+extern struct kmem_cache *obdo_cachep;
 
 #define OBDO_ALLOC(ptr)                                                       \
 do {                                                                          \
-        OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO);             \
+       OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, __GFP_IO);             \
 } while(0)
 
 #define OBDO_FREE(ptr)                                                        \
@@ -2293,12 +2261,30 @@ static inline void fid2obdo(struct lu_fid *fid, struct obdo *oa)
         /* something here */
 }
 
+typedef int (*register_lwp_cb)(void *data);
+
+struct lwp_register_item {
+       struct obd_export **lri_exp;
+       register_lwp_cb     lri_cb_func;
+       void               *lri_cb_data;
+       cfs_list_t          lri_list;
+       char                lri_name[MTI_NAME_MAXLEN];
+};
+
 /* I'm as embarrassed about this as you are.
  *
  * <shaver> // XXX do not look into _superhack with remaining eye
  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
 
+/* obd_mount.c */
+#ifdef HAVE_SERVER_SUPPORT
+int lustre_register_lwp_item(const char *lwpname, struct obd_export **exp,
+                            register_lwp_cb cb_func, void *cb_data);
+void lustre_deregister_lwp_item(struct obd_export **exp);
+int tgt_name2lwpname(const char *tgt_name, char *lwp_name);
+#endif /* HAVE_SERVER_SUPPORT */
+
 /* sysctl.c */
 extern void obd_sysctl_init (void);
 extern void obd_sysctl_clean (void);