/*
   * INET		An implementation of the TCP/IP protocol suite for the LINUX
   *		operating system.  INET is implemented using the  BSD Socket
   *		interface as the means of communication with the user level.
   *
   *		Definitions for the "ping" module.
   *
   *		This program is free software; you can redistribute it and/or
   *		modify it under the terms of the GNU General Public License
   *		as published by the Free Software Foundation; either version
   *		2 of the License, or (at your option) any later version.
   */
  #ifndef _PING_H
  #define _PING_H
  
  #include <net/netns/hash.h>
  
  /* PING_HTABLE_SIZE must be power of 2 */
  #define PING_HTABLE_SIZE 	64
  #define PING_HTABLE_MASK 	(PING_HTABLE_SIZE-1)
  
  #define ping_portaddr_for_each_entry(__sk, node, list) \
  	hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
  
  /*
   * gid_t is either uint or ushort.  We want to pass it to
   * proc_dointvec_minmax(), so it must not be larger than MAX_INT
   */
  #define GID_T_MAX (((gid_t)~0U) >> 1)
  
  struct ping_table {
  	struct hlist_nulls_head	hash[PING_HTABLE_SIZE];
  	rwlock_t		lock;
  };
  
  struct ping_iter_state {
  	struct seq_net_private  p;
  	int			bucket;
  };
  
  extern struct proto ping_prot;
  
  
  extern void ping_rcv(struct sk_buff *);
  extern void ping_err(struct sk_buff *, u32 info);

  #ifdef CONFIG_PROC_FS
  extern int __init ping_proc_init(void);
  extern void ping_proc_exit(void);
  #endif
  
  void __init ping_init(void);
  
  
  #endif /* _PING_H */