/*
 * This file is part of the Palacios Virtual Machine Monitor developed
 * by the V3VEE Project with funding from the United States National 
 * Science Foundation and the Department of Energy.  
 *
 * The V3VEE Project is a joint project between Northwestern University
 * and the University of New Mexico.  You can find out more at 
 * http://www.v3vee.org
 *
 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
 * All rights reserved.
 *
 * Author: Jack Lange <jarusl@cs.northwestern.edu>
 *
 * This is free software.  You are permitted to use,
 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
 */


#include <palacios/vmm_socket.h>
#include <palacios/vmm.h>


struct v3_socket_hooks * sock_hooks = 0;




void V3_Init_Sockets(struct v3_socket_hooks * hooks) {
  PrintInfo("Initializing Socket Interface\n");
  sock_hooks = hooks;
}



void v3_init_sock_set(struct v3_sock_set * sock_set) {
  sock_set->num_socks = 0;
  sock_set->socks = NULL;

}





/* This should probably check if the socket is already added */
// adds socket to the sockset
void v3_set_sock(struct v3_sock_set * sock_set, V3_SOCK sock) {
  struct v3_sock_entry * new_entry = V3_Malloc(sizeof(struct v3_sock_entry));

  new_entry->sock = sock;
  new_entry->is_set = 0;

  if (sock_set->socks) {
    new_entry->next = sock_set->socks;
  }

  sock_set->socks = new_entry;

  sock_set->num_socks++;
}


// deletes socket from sockset
void v3_clr_sock(struct v3_sock_set * sock_set, V3_SOCK sock) {
  struct v3_sock_entry * iter, * back_ptr;

  iter = sock_set->socks;
  back_ptr = NULL;

  v3_foreach_sock(sock_set, iter) {
    if (iter->sock == sock) {
      if (back_ptr == NULL) {
	sock_set->socks = iter->next;
      } else {
	back_ptr->next = iter->next;
      }

      V3_Free(iter);

      sock_set->num_socks--;
      break;
    }

    back_ptr = iter;
  }
}

// checks is_set vairable 
int v3_isset_sock(struct v3_sock_set * sock_set, V3_SOCK sock) {
  struct v3_sock_entry * iter;

  v3_foreach_sock(sock_set, iter) {
    if (iter->sock == sock) {
      return iter->is_set;
    }
  }
  return -1;
}


// clears all is_set variables.
void v3_zero_sockset(struct v3_sock_set * sock_set) {
  struct v3_sock_entry * iter;
  v3_foreach_sock(sock_set, iter) {
    iter->is_set = 0;
  }
}