/*
   * ipv4 in net namespaces
   */
  
  #ifndef __NETNS_IPV4_H__
  #define __NETNS_IPV4_H__

  #include <linux/uidgid.h>

  #include <net/inet_frag.h>

  #include <linux/rcupdate.h>

  struct tcpm_hash_bucket;

  struct ctl_table_header;
  struct ipv4_devconf;

  struct fib_rules_ops;

  struct hlist_head;

  struct fib_table;

  struct sock;

  struct local_ports {
  	seqlock_t	lock;
  	int		range[2];

  	bool		warned;

  };

  struct ping_group_range {
  	seqlock_t	lock;
  	kgid_t		range[2];
  };

  struct netns_ipv4 {

  #ifdef CONFIG_SYSCTL

  	struct ctl_table_header	*forw_hdr;

  	struct ctl_table_header	*frags_hdr;

  	struct ctl_table_header	*ipv4_hdr;

  	struct ctl_table_header *route_hdr;

  	struct ctl_table_header *xfrm4_hdr;

  #endif

  	struct ipv4_devconf	*devconf_all;
  	struct ipv4_devconf	*devconf_dflt;

  #ifdef CONFIG_IP_MULTIPLE_TABLES
  	struct fib_rules_ops	*rules_ops;

  	bool			fib_has_custom_rules;

  	struct fib_table __rcu	*fib_local;
  	struct fib_table __rcu	*fib_main;
  	struct fib_table __rcu	*fib_default;

  #endif
  #ifdef CONFIG_IP_ROUTE_CLASSID
  	int			fib_num_tclassid_users;

  #endif

  	struct hlist_head	*fib_table_hash;

  	bool			fib_offload_disabled;

  	struct sock		*fibnl;

  	struct sock  * __percpu	*icmp_sk;

  	struct sock		*mc_autojoin_sk;

  	struct inet_peer_base	*peers;

  	struct sock  * __percpu	*tcp_sk;

  	struct netns_frags	frags;

  #ifdef CONFIG_NETFILTER
  	struct xt_table		*iptable_filter;
  	struct xt_table		*iptable_mangle;
  	struct xt_table		*iptable_raw;

  	struct xt_table		*arptable_filter;

  #ifdef CONFIG_SECURITY

  	struct xt_table		*iptable_security;

  #endif

  	struct xt_table		*nat_table;

  #endif

  
  	int sysctl_icmp_echo_ignore_all;
  	int sysctl_icmp_echo_ignore_broadcasts;
  	int sysctl_icmp_ignore_bogus_error_responses;
  	int sysctl_icmp_ratelimit;
  	int sysctl_icmp_ratemask;
  	int sysctl_icmp_errors_use_inbound_ifaddr;

  	struct local_ports ip_local_ports;

  	int sysctl_tcp_ecn;

  	int sysctl_tcp_ecn_fallback;

  	int sysctl_ip_default_ttl;

  	int sysctl_ip_no_pmtu_disc;

  	int sysctl_ip_fwd_use_pmtu;

  	int sysctl_ip_nonlocal_bind;

  	/* Shall we try to damage output packets if routing dev changes? */
  	int sysctl_ip_dynaddr;

  	int sysctl_ip_early_demux;

  	int sysctl_fwmark_reflect;

  	int sysctl_tcp_fwmark_accept;

  #ifdef CONFIG_NET_L3_MASTER_DEV
  	int sysctl_tcp_l3mdev_accept;
  #endif

  	int sysctl_tcp_mtu_probing;
  	int sysctl_tcp_base_mss;

  	int sysctl_tcp_probe_threshold;

  	u32 sysctl_tcp_probe_interval;

  	int sysctl_tcp_keepalive_time;

  	int sysctl_tcp_keepalive_probes;

  	int sysctl_tcp_keepalive_intvl;

  	int sysctl_tcp_syn_retries;

  	int sysctl_tcp_synack_retries;

  	int sysctl_tcp_syncookies;

  	int sysctl_tcp_reordering;

  	int sysctl_tcp_retries1;

  	int sysctl_tcp_retries2;

  	int sysctl_tcp_orphan_retries;

  	int sysctl_tcp_fin_timeout;

  	unsigned int sysctl_tcp_notsent_lowat;

  	int sysctl_igmp_max_memberships;

  	int sysctl_igmp_max_msf;

  	int sysctl_igmp_llm_reports;

  	int sysctl_igmp_qrv;

  	struct ping_group_range ping_group_range;

  	atomic_t dev_addr_genid;

  #ifdef CONFIG_SYSCTL
  	unsigned long *sysctl_local_reserved_ports;
  #endif

  #ifdef CONFIG_IP_MROUTE

  #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES

  	struct mr_table		*mrt;

  #else
  	struct list_head	mr_tables;
  	struct fib_rules_ops	*mr_rules_ops;
  #endif

  #endif

  	atomic_t	rt_genid;

  };
  #endif