vipclosenic.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 <stdlib.h>
#include <signal.h>

#include "vipl_priv.h"


VIP_ENTRY_POINT VIP_RETURN
VipCloseNic (VIP_NIC_HANDLE NicHandle)
{
  VIP_UINT16 i;
  VIP_NIC *vip_nic_ptr;
  VIP_GM *vip_gm_ptr;
  VIP_DEBUG_LABEL (("VipCloseNic"));

  /* 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_MUTEX_LOCK (&vip_glob_lock);
  vip_gm_ptr = vip_nic_ptr->vip_gm_ptr;
  VIP_MUTEX_LOCK (&(vip_gm_ptr->lock));
  VIP_MUTEX_LOCK (&(vip_nic_ptr->lock));

  vip_nic_ptr->magic = 0;
  vip_destroy_conn_handle_set (&(vip_nic_ptr->vip_conn_set));
  vip_destroy_vi_handle_set (&(vip_nic_ptr->vip_vi_set));
  vip_destroy_cq_handle_set (&(vip_nic_ptr->vip_cq_set));
  vip_destroy_mem_handle_set (&(vip_nic_ptr->vip_mem_set));
  vip_destroy_ptag_handle_set (&(vip_nic_ptr->vip_ptag_set));
  VIP_MUTEX_UNLOCK (&(vip_nic_ptr->lock));
  VIP_MUTEX_DESTROY (&(vip_nic_ptr->lock));
  vip_gm_ptr->vip_nic_ptrs[vip_nic_ptr->index] = NULL;

  gm_lookaside_free (vip_nic_ptr);
  vip_gm_ptr->ref_count--;
  if (vip_gm_ptr->ref_count == 0)
    {
      vip_gm_ptr->blocking_plumber_cancelled = VIP_TRUE;
      vip_gm_ptr->periodic_plumber_cancelled = VIP_TRUE;
      VIP_SEMAPHORE_POST (&(vip_gm_ptr->blocking_plumber_tokens));
      VIP_MUTEX_UNLOCK (&vip_gm_ptr->lock);
      VIP_THREAD_JOIN (vip_gm_ptr->plumber_blocking);
      VIP_THREAD_JOIN (vip_gm_ptr->plumber_periodic);
      VIP_MUTEX_LOCK (&vip_gm_ptr->lock);

      VIP_SEMAPHORE_DESTROY (&(vip_gm_ptr->blocking_plumber_tokens));
      gm_destroy_lookaside (vip_gm_ptr->notify_lookaside);
      VIP_AVL_TREE_DESTROY (vip_gm_ptr->regmem_avl_tree);
      gm_destroy_lookaside (vip_gm_ptr->regmem_avl_lookaside);
      gm_cancel_alarm (&(vip_gm_ptr->alive_alarm));
      VIP_MUTEX_UNLOCK (&vip_gm_ptr->lock);
      VIP_MUTEX_DESTROY (&(vip_gm_ptr->recv_lock));
      VIP_MUTEX_DESTROY (&(vip_gm_ptr->lock));
      gm_dma_free (vip_gm_ptr->gm_port, vip_gm_ptr->alive_buffer);

      for (i = 0; i < VI_GM_NUMBER_SEND_BUF; i++)
        {
          gm_dma_free (vip_gm_ptr->gm_port, vip_gm_ptr->send_buffers[i]);
        }
      free (vip_gm_ptr->send_buffers);
      gm_destroy_lookaside (vip_gm_ptr->vip_send_req_lookaside);
      for (i = 0; i < vip_gm_ptr->max_recv_tokens; i++)
        {
          gm_dma_free (vip_gm_ptr->gm_port, vip_gm_ptr->recv_buffers[i]);
        }
      free (vip_gm_ptr->recv_buffers);
      gm_close (vip_gm_ptr->gm_port);
      vip_glob_gm_ptrs[vip_gm_ptr->gm_board_id] = NULL;
      free (vip_gm_ptr);
    }
  else
    {
      VIP_MUTEX_UNLOCK (&vip_gm_ptr->lock);
    }
  VIP_MUTEX_UNLOCK (&vip_glob_lock);

  VIP_DEBUG (("Success"));
  return VIP_SUCCESS;
}