vipquerysystem.c

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/********************************************************
 * Myricom VI-GM  networking software and documentation *
 * Copyright (c) 2001 by Myricom, Inc.                  *
 * All rights reserved.                                 *
 * See the file `COPYING' for copyright notice.         *
 ********************************************************/

#include <string.h>

#include "vipl_priv.h"

VIP_ENTRY_POINT VIP_RETURN
VipQuerySystemManagementInfo (VIP_NIC_HANDLE NicHandle,
                              VIP_ULONG InfoType, VIP_PVOID SysManInfo)
{
  VIP_UINT32 id;
  VIP_UINT32 vip_num_nodes;
  VIP_UINT32 max_id_in_use;
  VIP_NIC *vip_nic_ptr;
  VIP_GM *vip_gm_ptr;
  VIP_NET_ADDRESS *vip_net_addr;
  VIP_AUTODISCOVERY_LIST *vip_disc_list_ptr;
  VIP_UCHAR *gm_host_name;
  VIP_UCHAR gm_mac_address[VI_GM_MAC_ADDRESS_LEN];
  gm_status_t gm_status;
  VIP_DEBUG_LABEL (("VipQuerySystemManagementInfo"));

  /* check InfoType */
  if (InfoType != VIP_SMI_AUTODISCOVERY)
    {
      VIP_DEBUG (("Invalid InfoType, "
                  "only VIP_SMI_AUTODISCOVERY is supported"));
      return VIP_INVALID_PARAMETER;
    }

  /* check SysManInfo */
  vip_disc_list_ptr = SysManInfo;
  if (vip_disc_list_ptr == NULL)
    {
      VIP_DEBUG (("SysManInfo is null"));
      return VIP_INVALID_PARAMETER;
    }

  /* check NumberOfHops */
  if (vip_disc_list_ptr->NumberOfHops == 0)
    {
      VIP_DEBUG (("NumberOfHops is null"));
      return VIP_INVALID_PARAMETER;
    }

  /* check nic handle */
  vip_nic_ptr = (VIP_NIC *) NicHandle;
  if (VIP_INVALID_NIC_HANDLE (vip_nic_ptr))
    {
      VIP_DEBUG (("Invalid NIC handle"));
      return VIP_INVALID_PARAMETER;
    }
  vip_gm_ptr = vip_nic_ptr->vip_gm_ptr;
  VIP_MUTEX_LOCK (&(vip_gm_ptr->lock));
  VIP_MUTEX_LOCK (&(vip_nic_ptr->lock));

  gm_status = gm_max_node_id_inuse (vip_gm_ptr->gm_port, &max_id_in_use);
  if (gm_status != GM_SUCCESS)
    {
      VIP_DEBUG_GM (("gm_max_node_id_inuse() failed"));
      vip_disc_list_ptr->NumberOfHops = 0;
      VIP_MUTEX_UNLOCK (&(vip_nic_ptr->lock));
      VIP_MUTEX_UNLOCK (&(vip_gm_ptr->lock));
      return VIP_ERROR_RESOURCE;
    }
  VIP_ASSERT (max_id_in_use > 0);

  vip_num_nodes = 0;
  for (id = 0; id <= max_id_in_use; id++)
    {
      gm_bzero (gm_mac_address, VI_GM_MAC_ADDRESS_LEN);
      if ((gm_node_id_to_unique_id (vip_gm_ptr->gm_port,
                                    id, gm_mac_address) == GM_SUCCESS)
          && ((gm_mac_address[0] != 0)
              || (gm_mac_address[1] != 0)
              || (gm_mac_address[2] != 0)
              || (gm_mac_address[3] != 0)
              || (gm_mac_address[4] != 0) || (gm_mac_address[5] != 0)))
        {
          gm_host_name = gm_node_id_to_host_name (vip_gm_ptr->gm_port, id);
          VIP_ASSERT (strlen (gm_host_name) > 0);

          if (vip_num_nodes < vip_disc_list_ptr->NumAdAddrs)
            {
              vip_net_addr = vip_disc_list_ptr->ADAddrArray[vip_num_nodes];
              vip_net_addr->HostAddressLen = VI_GM_MAC_ADDRESS_LEN;
              memcpy (vip_net_addr->HostAddress, gm_mac_address,
                      VI_GM_MAC_ADDRESS_LEN);
            }

          vip_num_nodes++;
        }
    }

  if (vip_num_nodes > vip_disc_list_ptr->NumAdAddrs)
    {
      VIP_DEBUG (("Autodiscovery structure to small"));
      vip_disc_list_ptr->NumAdAddrs = vip_num_nodes;
      VIP_MUTEX_UNLOCK (&(vip_nic_ptr->lock));
      VIP_MUTEX_UNLOCK (&(vip_gm_ptr->lock));
      return VIP_ERROR_RESOURCE;
    }

  VIP_DEBUG (("Success"));
  vip_disc_list_ptr->NumAdAddrs = vip_num_nodes;
  VIP_MUTEX_UNLOCK (&(vip_nic_ptr->lock));
  VIP_MUTEX_UNLOCK (&(vip_gm_ptr->lock));
  return VIP_SUCCESS;
}