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dapl_init.c

/*
 * Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
 *
 * This Software is licensed under one of the following licenses:
 *
 * 1) under the terms of the "Common Public License 1.0" a copy of which is
 *    available from the Open Source Initiative, see
 *    http://www.opensource.org/licenses/cpl.php.
 *
 * 2) under the terms of the "The BSD License" a copy of which is
 *    available from the Open Source Initiative, see
 *    http://www.opensource.org/licenses/bsd-license.php.
 *
 * 3) under the terms of the "GNU General Public License (GPL) Version 2" a
 *    copy of which is available from the Open Source Initiative, see
 *    http://www.opensource.org/licenses/gpl-license.php.
 *
 * Licensee has the right to choose one of the above licenses.
 *
 * Redistributions of source code must retain the above copyright
 * notice and one of the license notices.
 *
 * Redistributions in binary form must reproduce both the above copyright
 * notice, one of the license notices in the documentation
 * and/or other materials provided with the distribution.
 */

/**********************************************************************
 * 
 * MODULE: dapl_init.c
 *
 * PURPOSE: Interface Adapter management
 * Description: Interfaces in this file are completely described in
 *          the DAPL 1.1 API, Chapter 6, section 2
 *
 * $Id:$
 **********************************************************************/

#include "dapl.h"
#include <dat2/dat_registry.h>      /* Provider API function prototypes */
#include "dapl_hca_util.h"
#include "dapl_init.h"
#include "dapl_provider.h"
#include "dapl_mr_util.h"
#include "dapl_osd.h"
#include "dapl_adapter_util.h"
#include "dapl_name_service.h"
#include "dapl_timer_util.h"
#include "dapl_vendor.h"

/*
 * dapl_init
 *
 * initialize this provider
 * includes initialization of all global variables
 * as well as registering all supported IAs with the dat registry
 *
 * This function needs to be called once when the provider is loaded.
 *
 * Input:
 *    none
 *
 * Output:
 *    none
 *
 * Return Values:
 */
void dapl_init(void)
{
      DAT_RETURN dat_status;

      /* set up debug type */
      g_dapl_dbg_type = dapl_os_get_env_val("DAPL_DBG_TYPE",
                                    DAPL_DBG_TYPE_ERR);
      /* set up debug destination */
      g_dapl_dbg_dest = dapl_os_get_env_val("DAPL_DBG_DEST",
                                    DAPL_DBG_DEST_STDOUT);

      /* open log file on first logging call if necessary */
      if (g_dapl_dbg_dest & DAPL_DBG_DEST_SYSLOG)
            openlog("libdapl", LOG_ODELAY | LOG_PID | LOG_CONS, LOG_USER);

      dapl_log(DAPL_DBG_TYPE_UTIL, "dapl_init: dbg_type=0x%x,dbg_dest=0x%x\n",
             g_dapl_dbg_type, g_dapl_dbg_dest);

      /* See if the user is on a loopback setup */
      g_dapl_loopback_connection = dapl_os_get_env_bool("DAPL_LOOPBACK");

      dapl_dbg_log(DAPL_DBG_TYPE_UTIL, "DAPL: %s Setting Loopback\n",
                 g_dapl_loopback_connection ? "" : "NOT");

      /* initialize verbs library */
      dapls_ib_init();

      /* initialize the timer */
      dapls_timer_init();

      /* Set up name services */
      dat_status = dapls_ns_init();
      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dapls_ns_init failed %d\n", dat_status);
            goto bail;
      }

      /* initialize the provider list */
      dat_status = dapl_provider_list_create();

      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dapl_provider_list_create failed %d\n",
                       dat_status);
            goto bail;
      }

      return;

      bail:
      dapl_dbg_log(DAPL_DBG_TYPE_ERR, "ERROR: dapl_init failed\n");
      return;
}

/*
 * dapl_fini
 *
 * finalize this provider
 * includes freeing of all global variables
 * as well as deregistering all supported IAs from the dat registry
 *
 * This function needs to be called once when the provider is loaded.
 *
 * Input:
 *    none
 *
 * Output:
 *    none
 *
 * Return Values:
 */
void dapl_fini(void)
{
      DAT_RETURN dat_status;

      dapl_dbg_log(DAPL_DBG_TYPE_UTIL, "DAPL: ENTER (dapl_fini)\n");

      dat_status = dapl_provider_list_destroy();
      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dapl_provider_list_destroy failed %d\n",
                       dat_status);
      }

      dapls_ib_release();

      dapl_dbg_log(DAPL_DBG_TYPE_UTIL, "DAPL: Exit (dapl_fini)\n");

      if (g_dapl_dbg_dest & DAPL_DBG_DEST_SYSLOG)
            closelog();

      return;
}

/*
 *
 * This function is called by the registry to initialize a provider
 *
 * The instance data string is expected to have the following form:
 *
 * <hca name> <port number>
 *
 */
void DAT_API
DAT_PROVIDER_INIT_FUNC_NAME(IN const DAT_PROVIDER_INFO * provider_info,
                      IN const char *instance_data)
{
      DAT_PROVIDER *provider;
      DAPL_HCA *hca_ptr;
      DAT_RETURN dat_status;
      char *data;
      char *name;
      char *port;
      unsigned int len;
      unsigned int i;

      data = NULL;
      provider = NULL;
      hca_ptr = NULL;

#if defined(_WIN32) || defined(_WIN64)
      /* initialize DAPL library here as when called from DLL context in DLLmain()
       * the IB (ibal) call hangs.
       */
      dapl_init();
#endif

      dat_status =
          dapl_provider_list_insert(provider_info->ia_name, &provider);
      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dat_provider_list_insert failed: %x\n",
                       dat_status);
            goto bail;
      }

      data = dapl_os_strdup(instance_data);
      if (NULL == data) {
            goto bail;
      }

      len = dapl_os_strlen(data);

      for (i = 0; i < len; i++) {
            if (' ' == data[i]) {
                  data[i] = '\0';
                  break;
            }
      }

      /* if the instance data did not have a valid format */
      if (i == len) {
            goto bail;
      }

      name = data;
      port = data + (i + 1);

      hca_ptr = dapl_hca_alloc(name, port);
      if (NULL == hca_ptr) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "%s() dapl_hca_alloc failed?\n");
            goto bail;
      }

      provider->extension = hca_ptr;
      dat_status = dat_registry_add_provider(provider, provider_info);
      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dat_registry_add_provider failed: %x\n",
                       dat_status);
      }

      bail:
      if (NULL != data) {
            dapl_os_free(data, len + 1);
      }

      if (DAT_SUCCESS != dat_status) {
            if (NULL != provider) {
                  (void)dapl_provider_list_remove(provider_info->ia_name);
            }

            if (NULL != hca_ptr) {
                  dapl_hca_free(hca_ptr);
            }
      }
}

/*
 *
 * This function is called by the registry to de-initialize a provider
 *
 */
void DAT_API
DAT_PROVIDER_FINI_FUNC_NAME(IN const DAT_PROVIDER_INFO * provider_info)
{
      DAT_PROVIDER *provider;
      DAT_RETURN dat_status;

      dat_status =
          dapl_provider_list_search(provider_info->ia_name, &provider);
      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dat_registry_add_provider failed: %x\n",
                       dat_status);
            return;
      }

      dat_status = dat_registry_remove_provider(provider, provider_info);
      if (DAT_SUCCESS != dat_status) {
            dapl_dbg_log(DAPL_DBG_TYPE_ERR,
                       "dat_registry_add_provider failed: %x\n",
                       dat_status);
      }

      /*
       * free HCA memory
       */
      dapl_hca_free(provider->extension);

      (void)dapl_provider_list_remove(provider_info->ia_name);

#if defined(_WIN32) || defined(_WIN64)
      /* cleanup DAPL library - relocated here from OSD DLL context as the IBAL
       * calls hung in the DLL context?
       */
      dapl_fini();
#endif
}

/*
 * Local variables:
 *  c-indent-level: 4
 *  c-basic-offset: 4
 *  tab-width: 8
 * End:
 */

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