Whamcloud - gitweb
LU-1214 ptlrpc: removes client lu_target.h/target.c dependency
[fs/lustre-release.git] / lustre / include / obd_class.h
index 5b354e1..433431f 100644 (file)
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
 #error Unsupported operating system.
 #endif
 
+#define OBD_STATFS_NODELAY      0x0001  /* requests should be send without delay
+                                         * and resends for avoid deadlocks */
+#define OBD_STATFS_FROM_CACHE   0x0002  /* the statfs callback should not update
+                                         * obd_osfs_age */
+#define OBD_STATFS_PTLRPCD      0x0004  /* requests will be sent via ptlrpcd
+                                         * instead of a specific set. This
+                                         * means that we cannot rely on the set
+                                         * interpret routine to be called.
+                                         * lov_statfs_fini() must thus be called
+                                         * by the request interpret routine */
+
+#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_spinlock_t obd_dev_lock;
+extern cfs_rwlock_t obd_dev_lock;
 
 /* OBD Operations Declarations */
 extern struct obd_device *class_conn2obd(struct lustre_handle *);
@@ -97,12 +112,19 @@ char *obd_export_nid2str(struct obd_export *exp);
 
 int obd_export_evict_by_nid(struct obd_device *obd, const char *nid);
 int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid);
+int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep);
 
 int obd_zombie_impexp_init(void);
 void obd_zombie_impexp_stop(void);
 void obd_zombie_impexp_cull(void);
 void obd_zombie_barrier(void);
 void obd_exports_barrier(struct obd_device *obd);
+int kuc_len(int payload_len);
+struct kuc_hdr * kuc_ptr(void *p);
+int kuc_ispayload(void *p);
+void *kuc_alloc(int payload_len, int transport, int type);
+void kuc_free(void *p, int payload_len);
+
 /* obd_config.c */
 int class_process_config(struct lustre_cfg *lcfg);
 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
@@ -135,8 +157,8 @@ static inline void lprocfs_echo_init_vars(struct lprocfs_static_vars *lvars)
 
 /* Passed as data param to class_config_parse_llog */
 struct config_llog_instance {
-        char *              cfg_instance;
-        char *              cfg_obdname;
+        char               *cfg_obdname;
+        void               *cfg_instance;
         struct super_block *cfg_sb;
         struct obd_uuid     cfg_uuid;
         int                 cfg_last_idx; /* for partial llog processing */
@@ -147,19 +169,28 @@ int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
                            struct config_llog_instance *cfg);
 
+enum {
+        CONFIG_T_CONFIG  = 0,
+        CONFIG_T_SPTLRPC = 1,
+        CONFIG_T_RECOVER = 2,
+        CONFIG_T_MAX     = 3
+};
+
 /* list of active configuration logs  */
 struct config_llog_data {
-        char                       *cld_logname;
         struct ldlm_res_id          cld_resid;
         struct config_llog_instance cld_cfg;
         cfs_list_t                  cld_list_chain;
         cfs_atomic_t                cld_refcount;
         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;
+        int                         cld_type;
         unsigned int                cld_stopping:1, /* we were told to stop
                                                      * watching */
-                                    cld_lostlock:1, /* lock not requeued */
-                                    cld_is_sptlrpc:1;
+                                    cld_lostlock:1; /* lock not requeued */
+        char                        cld_logname[0];
 };
 
 struct lustre_profile {
@@ -196,7 +227,7 @@ extern void (*class_export_dump_hook)(struct obd_export *);
 
 #define class_export_rpc_put(exp)                                       \
 ({                                                                      \
-        LASSERT(cfs_atomic_read(&exp->exp_rpc_count) > 0);              \
+        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));          \
@@ -214,7 +245,7 @@ extern void (*class_export_dump_hook)(struct obd_export *);
 
 #define class_export_lock_put(exp, lock)                                \
 ({                                                                      \
-        LASSERT(cfs_atomic_read(&exp->exp_locks_count) > 0);            \
+        LASSERT_ATOMIC_POS(&exp->exp_locks_count);                      \
         cfs_atomic_dec(&(exp)->exp_locks_count);                        \
         __class_export_del_lock_ref(exp, lock);                         \
         CDEBUG(D_INFO, "lock PUTting export %p : new locks_count %d\n", \
@@ -232,7 +263,7 @@ extern void (*class_export_dump_hook)(struct obd_export *);
 
 #define class_export_cb_put(exp)                                        \
 ({                                                                      \
-        LASSERT(cfs_atomic_read(&exp->exp_cb_count) > 0);               \
+        LASSERT_ATOMIC_POS(&exp->exp_cb_count);                         \
         cfs_atomic_dec(&(exp)->exp_cb_count);                           \
         CDEBUG(D_INFO, "callback PUTting export %p : new cb_count %d\n",\
                (exp), cfs_atomic_read(&(exp)->exp_cb_count));           \
@@ -271,6 +302,7 @@ static inline enum obd_option exp_flags_from_obd(struct obd_device *obd)
                 0);
 }
 
+#ifdef HAVE_SERVER_SUPPORT
 static inline struct lu_target *class_exp2tgt(struct obd_export *exp)
 {
         LASSERT(exp->exp_obd);
@@ -282,6 +314,7 @@ static inline struct lr_server_data *class_server_data(struct obd_device *obd)
         LASSERT(obd->u.obt.obt_lut);
         return &obd->u.obt.obt_lut->lut_lsd;
 }
+#endif
 
 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid);
 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj);
@@ -381,6 +414,20 @@ do {                                                            \
 #define EXP_MD_COUNTER_INCREMENT(exp, op)
 #endif
 
+static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat* tmp)
+{
+        /* Always add in ldlm_stats */
+        tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
+                                                  ,LPROCFS_STATS_FLAG_NOPERCPU);
+        if (tmp->nid_ldlm_stats == NULL)
+                return -ENOMEM;
+
+        lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
+
+        return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
+                                      tmp->nid_ldlm_stats);
+}
+
 #define OBD_CHECK_MD_OP(obd, op, err)                           \
 do {                                                            \
         if (!OBT(obd) || !MDP((obd), op)) {                     \
@@ -595,6 +642,31 @@ static inline int obd_cleanup(struct obd_device *obd)
         RETURN(rc);
 }
 
+static inline void obd_cleanup_client_import(struct obd_device *obd)
+{
+        ENTRY;
+
+        /* If we set up but never connected, the
+           client import will not have been cleaned. */
+        cfs_down_write(&obd->u.cli.cl_sem);
+        if (obd->u.cli.cl_import) {
+                struct obd_import *imp;
+                imp = obd->u.cli.cl_import;
+                CDEBUG(D_CONFIG, "%s: client import never connected\n",
+                       obd->obd_name);
+                ptlrpc_invalidate_import(imp);
+                if (imp->imp_rq_pool) {
+                        ptlrpc_free_rq_pool(imp->imp_rq_pool);
+                        imp->imp_rq_pool = NULL;
+                }
+                client_destroy_import(imp);
+                obd->u.cli.cl_import = NULL;
+        }
+        cfs_up_write(&obd->u.cli.cl_sem);
+
+        EXIT;
+}
+
 static inline int
 obd_process_config(struct obd_device *obd, int datalen, void *data)
 {
@@ -888,14 +960,19 @@ static inline struct obd_uuid *obd_get_uuid(struct obd_export *exp)
         RETURN(uuid);
 }
 
+/** Create a new /a exp on device /a obd for the uuid /a cluuid
+ * @param exp New export handle
+ * @param d Connect data, supported flags are set, flags also understood
+ *    by obd are returned.
+ */
 static inline int obd_connect(const struct lu_env *env,
                               struct obd_export **exp,struct obd_device *obd,
                               struct obd_uuid *cluuid,
-                              struct obd_connect_data *d,
+                              struct obd_connect_data *data,
                               void *localdata)
 {
         int rc;
-        __u64 ocf = d ? d->ocd_connect_flags : 0; /* for post-condition
+        __u64 ocf = data ? data->ocd_connect_flags : 0; /* for post-condition
                                                    * check */
         ENTRY;
 
@@ -903,10 +980,10 @@ static inline int obd_connect(const struct lu_env *env,
         OBD_CHECK_DT_OP(obd, connect, -EOPNOTSUPP);
         OBD_COUNTER_INCREMENT(obd, connect);
 
-        rc = OBP(obd, connect)(env, exp, obd, cluuid, d, localdata);
+        rc = OBP(obd, connect)(env, exp, obd, cluuid, data, localdata);
         /* check that only subset is granted */
-        LASSERT(ergo(d != NULL,
-                     (d->ocd_connect_flags & ocf) == d->ocd_connect_flags));
+        LASSERT(ergo(data != NULL, (data->ocd_connect_flags & ocf) ==
+                                    data->ocd_connect_flags));
         RETURN(rc);
 }
 
@@ -1226,9 +1303,30 @@ static inline int obd_statfs(struct obd_device *obd, struct obd_statfs *osfs,
         RETURN(rc);
 }
 
-static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
-                           struct lov_stripe_md *ea, obd_size start,
-                           obd_size end, void *capa)
+static inline int obd_sync_rqset(struct obd_export *exp, struct obd_info *oinfo,
+                                 obd_size start, obd_size end)
+{
+        struct ptlrpc_request_set *set = NULL;
+        int rc;
+        ENTRY;
+
+        OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
+        EXP_COUNTER_INCREMENT(exp, sync);
+
+        set =  ptlrpc_prep_set();
+        if (set == NULL)
+                RETURN(-ENOMEM);
+
+        rc = OBP(exp->exp_obd, sync)(exp, oinfo, start, end, set);
+        if (rc == 0)
+                rc = ptlrpc_set_wait(set);
+        ptlrpc_set_destroy(set);
+        RETURN(rc);
+}
+
+static inline int obd_sync(struct obd_export *exp, struct obd_info *oinfo,
+                           obd_size start, obd_size end,
+                           struct ptlrpc_request_set *set)
 {
         int rc;
         ENTRY;
@@ -1236,7 +1334,7 @@ static inline int obd_sync(struct obd_export *exp, struct obdo *oa,
         OBD_CHECK_DT_OP(exp->exp_obd, sync, -EOPNOTSUPP);
         EXP_COUNTER_INCREMENT(exp, sync);
 
-        rc = OBP(exp->exp_obd, sync)(exp, oa, ea, start, end, capa);
+        rc = OBP(exp->exp_obd, sync)(exp, oinfo, start, end, set);
         RETURN(rc);
 }
 
@@ -1607,7 +1705,8 @@ static inline int obd_quotactl(struct obd_export *exp,
 
 static inline int obd_quota_adjust_qunit(struct obd_export *exp,
                                          struct quota_adjust_qunit *oqaq,
-                                         struct lustre_quota_ctxt *qctxt)
+                                         struct lustre_quota_ctxt *qctxt,
+                                         struct ptlrpc_request_set *set)
 {
 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
         struct timeval work_start;
@@ -1624,7 +1723,7 @@ static inline int obd_quota_adjust_qunit(struct obd_export *exp,
         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);
+        rc = OBP(exp->exp_obd, quota_adjust_qunit)(exp, oqaq, qctxt, set);
 
 #if defined(LPROCFS) && defined(HAVE_QUOTA_SUPPORT)
         if (qctxt) {
@@ -1949,16 +2048,15 @@ static inline int md_sync(struct obd_export *exp, const struct lu_fid *fid,
         RETURN(rc);
 }
 
-static inline int md_readpage(struct obd_export *exp, const struct lu_fid *fid,
-                              struct obd_capa *oc, __u64 offset,
-                              struct page *page,
+static inline int md_readpage(struct obd_export *exp, struct md_op_data *opdata,
+                              struct page **pages,
                               struct ptlrpc_request **request)
 {
         int rc;
         ENTRY;
         EXP_CHECK_MD_OP(exp, readpage);
         EXP_MD_COUNTER_INCREMENT(exp, readpage);
-        rc = MDP(exp->exp_obd, readpage)(exp, fid, oc, offset, page, request);
+        rc = MDP(exp->exp_obd, readpage)(exp, opdata, pages, request);
         RETURN(rc);
 }
 
@@ -2044,7 +2142,7 @@ static inline int md_clear_open_replay_data(struct obd_export *exp,
 }
 
 static inline int md_set_lock_data(struct obd_export *exp,
-                                   __u64 *lockh, void *data, __u32 *bits)
+                                   __u64 *lockh, void *data, __u64 *bits)
 {
         ENTRY;
         EXP_CHECK_MD_OP(exp, set_lock_data);
@@ -2144,7 +2242,7 @@ static inline int md_intent_getattr_async(struct obd_export *exp,
 
 static inline int md_revalidate_lock(struct obd_export *exp,
                                      struct lookup_intent *it,
-                                     struct lu_fid *fid, __u32 *bits)
+                                     struct lu_fid *fid, __u64 *bits)
 {
         int rc;
         ENTRY;
@@ -2165,7 +2263,7 @@ extern cfs_mem_cache_t *obdo_cachep;
 
 #define OBDO_ALLOC(ptr)                                                       \
 do {                                                                          \
-        OBD_SLAB_ALLOC_PTR((ptr), obdo_cachep);                               \
+        OBD_SLAB_ALLOC_PTR_GFP((ptr), obdo_cachep, CFS_ALLOC_IO);             \
 } while(0)
 
 #define OBDO_FREE(ptr)                                                        \
@@ -2202,6 +2300,7 @@ void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
 int lustre_uuid_to_peer(const char *uuid, lnet_nid_t *peer_nid, int index);
 int class_add_uuid(const char *uuid, __u64 nid);
 int class_del_uuid (const char *uuid);
+int class_check_uuid(struct obd_uuid *uuid, __u64 nid);
 void class_init_uuidlist(void);
 void class_exit_uuidlist(void);
 
@@ -2210,6 +2309,6 @@ int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen);
 int raw_name2idx(int hashtype, int count, const char *name, int namelen);
 
 /* prng.c */
-void ll_generate_random_uuid(class_uuid_t uuid_out);
+#define ll_generate_random_uuid(uuid_out) cfs_get_random_bytes(uuid_out, sizeof(class_uuid_t))
 
 #endif /* __LINUX_OBD_CLASS_H */