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11083 support NFS server in zone
Portions contributed by: Dan Kruchinin <dan.kruchinin@nexenta.com>
Portions contributed by: Stepan Zastupov <stepan.zastupov@gmail.com>
Portions contributed by: Joyce McIntosh <joyce.mcintosh@nexenta.com>
Portions contributed by: Mike Zeller <mike@mikezeller.net>
Portions contributed by: Dan McDonald <danmcd@joyent.com>
Portions contributed by: Gordon Ross <gordon.w.ross@gmail.com>
Portions contributed by: Vitaliy Gusev <gusev.vitaliy@gmail.com>
Reviewed by: Rick McNeal <rick.mcneal@nexenta.com>
Reviewed by: Rob Gittins <rob.gittins@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Jason King <jbk@joyent.com>
Reviewed by: C Fraire <cfraire@me.com>
Change-Id: I22f289d357503f9b48a0bc2482cc4328a6d43d16
        
*** 16,29 ****
--- 16,34 ----
   * fields enclosed by brackets "[]" replaced with your own identifying
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
+ 
  /*
   * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
   */
  
+ /*
+  * Copyright 2018 Nexenta Systems, Inc.
+  */
+ 
  #include <sys/systm.h>
  #include <sys/cmn_err.h>
  #include <sys/kmem.h>
  #include <sys/disp.h>
  #include <sys/id_space.h>
*** 247,256 ****
--- 252,305 ----
  
          mutex_destroy(db->db_lock);
          kmem_free(db, sizeof (rfs4_database_t));
  }
  
+ /*
+  * Used to get the correct kmem_cache database for the state table being
+  * created.
+  * Helper function for rfs4_table_create
+  */
+ static kmem_cache_t *
+ get_db_mem_cache(char *name)
+ {
+         int i;
+ 
+         for (i = 0; i < RFS4_DB_MEM_CACHE_NUM; i++) {
+                 if (strcmp(name, rfs4_db_mem_cache_table[i].r_db_name) == 0)
+                         return (rfs4_db_mem_cache_table[i].r_db_mem_cache);
+         }
+         /*
+          * There is no associated kmem cache for this NFS4 server state
+          * table name
+          */
+         return (NULL);
+ }
+ 
+ /*
+  * Used to initialize the global NFSv4 server state database.
+  * Helper funtion for rfs4_state_g_init and called when module is loaded.
+  */
+ kmem_cache_t *
+ /* CSTYLED */
+ nfs4_init_mem_cache(char *cache_name, uint32_t idxcnt, uint32_t size, uint32_t idx)
+ {
+         kmem_cache_t *mem_cache = kmem_cache_create(cache_name,
+             sizeof (rfs4_dbe_t) + idxcnt * sizeof (rfs4_link_t) + size,
+             0,
+             rfs4_dbe_kmem_constructor,
+             rfs4_dbe_kmem_destructor,
+             NULL,
+             NULL,
+             NULL,
+             0);
+         (void) strlcpy(rfs4_db_mem_cache_table[idx].r_db_name, cache_name,
+             strlen(cache_name) + 1);
+         rfs4_db_mem_cache_table[idx].r_db_mem_cache = mem_cache;
+         return (mem_cache);
+ }
+ 
  rfs4_table_t *
  rfs4_table_create(rfs4_database_t *db, char *tabname, time_t max_cache_time,
      uint32_t idxcnt, bool_t (*create)(rfs4_entry_t, void *),
      void (*destroy)(rfs4_entry_t),
      bool_t (*expiry)(rfs4_entry_t),
*** 302,320 ****
          table->dbt_maxentries = maxentries;
          table->dbt_create = create;
          table->dbt_destroy = destroy;
          table->dbt_expiry = expiry;
  
!         table->dbt_mem_cache = kmem_cache_create(cache_name,
!             sizeof (rfs4_dbe_t) + idxcnt * sizeof (rfs4_link_t) + size,
!             0,
!             rfs4_dbe_kmem_constructor,
!             rfs4_dbe_kmem_destructor,
!             NULL,
!             table,
!             NULL,
!             0);
          kmem_free(cache_name, len+13);
  
          table->dbt_debug = db->db_debug_flags;
  
          mutex_enter(db->db_lock);
--- 351,365 ----
          table->dbt_maxentries = maxentries;
          table->dbt_create = create;
          table->dbt_destroy = destroy;
          table->dbt_expiry = expiry;
  
!         /*
!          * get the correct kmem_cache for this table type based on the name.
!          */
!         table->dbt_mem_cache = get_db_mem_cache(cache_name);
! 
          kmem_free(cache_name, len+13);
  
          table->dbt_debug = db->db_debug_flags;
  
          mutex_enter(db->db_lock);
*** 362,372 ****
          cv_destroy(&table->dbt_reaper_wait);
  
          kmem_free(table->dbt_name, strlen(table->dbt_name) + 1);
          if (table->dbt_id_space)
                  id_space_destroy(table->dbt_id_space);
!         kmem_cache_destroy(table->dbt_mem_cache);
          kmem_free(table, sizeof (rfs4_table_t));
  }
  
  rfs4_index_t *
  rfs4_index_create(rfs4_table_t *table, char *keyname,
--- 407,417 ----
          cv_destroy(&table->dbt_reaper_wait);
  
          kmem_free(table->dbt_name, strlen(table->dbt_name) + 1);
          if (table->dbt_id_space)
                  id_space_destroy(table->dbt_id_space);
!         table->dbt_mem_cache = NULL;
          kmem_free(table, sizeof (rfs4_table_t));
  }
  
  rfs4_index_t *
  rfs4_index_create(rfs4_table_t *table, char *keyname,
*** 681,696 ****
  
  /*ARGSUSED*/
  boolean_t
  rfs4_cpr_callb(void *arg, int code)
  {
-         rfs4_table_t *table = rfs4_client_tab;
          rfs4_bucket_t *buckets, *bp;
          rfs4_link_t *l;
          rfs4_client_t *cp;
          int i;
  
          /*
           * We get called for Suspend and Resume events.
           * For the suspend case we simply don't care!  Nor do we care if
           * there are no clients.
           */
--- 726,743 ----
  
  /*ARGSUSED*/
  boolean_t
  rfs4_cpr_callb(void *arg, int code)
  {
          rfs4_bucket_t *buckets, *bp;
          rfs4_link_t *l;
          rfs4_client_t *cp;
          int i;
  
+         nfs4_srv_t *nsrv4 = nfs4_get_srv();
+         rfs4_table_t *table = nsrv4->rfs4_client_tab;
+ 
          /*
           * We get called for Suspend and Resume events.
           * For the suspend case we simply don't care!  Nor do we care if
           * there are no clients.
           */
*** 877,895 ****
          /* Notify the database shutdown processing that the table is shutdown */
          mutex_enter(table->dbt_db->db_lock);
          table->dbt_db->db_shutdown_count--;
          cv_signal(&table->dbt_db->db_shutdown_wait);
          mutex_exit(table->dbt_db->db_lock);
  }
  
  static void
  rfs4_start_reaper(rfs4_table_t *table)
  {
          if (table->dbt_max_cache_time == 0)
                  return;
  
!         (void) thread_create(NULL, 0, reaper_thread, table, 0, &p0, TS_RUN,
              minclsyspri);
  }
  
  #ifdef DEBUG
  void
--- 924,943 ----
          /* Notify the database shutdown processing that the table is shutdown */
          mutex_enter(table->dbt_db->db_lock);
          table->dbt_db->db_shutdown_count--;
          cv_signal(&table->dbt_db->db_shutdown_wait);
          mutex_exit(table->dbt_db->db_lock);
+         zthread_exit();
  }
  
  static void
  rfs4_start_reaper(rfs4_table_t *table)
  {
          if (table->dbt_max_cache_time == 0)
                  return;
  
!         (void) zthread_create(NULL, 0, reaper_thread, table, 0,
              minclsyspri);
  }
  
  #ifdef DEBUG
  void