43 struct netns_ipv4 {  struct
61 	__cacheline_group_end(netns_ipv4_read_tx);  argument
66 	__cacheline_group_end(netns_ipv4_read_txrx);  argument
74 	__cacheline_group_end(netns_ipv4_read_rx);  argument
76 	struct inet_timewait_death_row tcp_death_row;
77 	struct udp_table *udp_table;
80 	struct ctl_table_header	*forw_hdr;
81 	struct ctl_table_header	*frags_hdr;
82 	struct ctl_table_header	*ipv4_hdr;
83 	struct ctl_table_header *route_hdr;
84 	struct ctl_table_header *xfrm4_hdr;
86 	struct ipv4_devconf	*devconf_all;
87 	struct ipv4_devconf	*devconf_dflt;
88 	struct ip_ra_chain __rcu *ra_chain;
89 	struct mutex		ra_mutex;
91 	struct fib_rules_ops	*rules_ops;
92 	struct fib_table __rcu	*fib_main;
93 	struct fib_table __rcu	*fib_default;
94 	unsigned int		fib_rules_require_fldissect;
95 	bool			fib_has_custom_rules;
97 	bool			fib_has_custom_local_routes;
98 	bool			fib_offload_disabled;
99 	u8			sysctl_tcp_shrink_window;
101 	atomic_t		fib_num_tclassid_users;
103 	struct hlist_head	*fib_table_hash;
104 	struct sock		*fibnl;
106 	struct sock		*mc_autojoin_sk;
108 	struct inet_peer_base	*peers;
109 	struct fqdir		*fqdir;
111 	u8 sysctl_icmp_echo_ignore_all;
112 	u8 sysctl_icmp_echo_enable_probe;
113 	u8 sysctl_icmp_echo_ignore_broadcasts;
114 	u8 sysctl_icmp_ignore_bogus_error_responses;
115 	u8 sysctl_icmp_errors_use_inbound_ifaddr;
116 	int sysctl_icmp_ratelimit;
117 	int sysctl_icmp_ratemask;
119 	u32 ip_rt_min_pmtu;
120 	int ip_rt_mtu_expires;
121 	int ip_rt_min_advmss;
123 	struct local_ports ip_local_ports;
125 	u8 sysctl_tcp_ecn;
126 	u8 sysctl_tcp_ecn_fallback;
128 	u8 sysctl_ip_default_ttl;
129 	u8 sysctl_ip_no_pmtu_disc;
130 	u8 sysctl_ip_fwd_update_priority;
131 	u8 sysctl_ip_nonlocal_bind;
132 	u8 sysctl_ip_autobind_reuse;
134 	u8 sysctl_ip_dynaddr;
136 	u8 sysctl_raw_l3mdev_accept;
138 	u8 sysctl_udp_early_demux;
140 	u8 sysctl_nexthop_compat_mode;
142 	u8 sysctl_fwmark_reflect;
143 	u8 sysctl_tcp_fwmark_accept;
145 	u8 sysctl_tcp_l3mdev_accept;
147 	u8 sysctl_tcp_mtu_probing;
148 	int sysctl_tcp_mtu_probe_floor;
149 	int sysctl_tcp_base_mss;
150 	int sysctl_tcp_probe_threshold;
151 	u32 sysctl_tcp_probe_interval;
153 	int sysctl_tcp_keepalive_time;
154 	int sysctl_tcp_keepalive_intvl;
155 	u8 sysctl_tcp_keepalive_probes;
157 	u8 sysctl_tcp_syn_retries;
158 	u8 sysctl_tcp_synack_retries;
159 	u8 sysctl_tcp_syncookies;
160 	u8 sysctl_tcp_migrate_req;
161 	u8 sysctl_tcp_comp_sack_nr;
162 	u8 sysctl_tcp_backlog_ack_defer;
163 	u8 sysctl_tcp_pingpong_thresh;
165 	u8 sysctl_tcp_retries1;
166 	u8 sysctl_tcp_retries2;
167 	u8 sysctl_tcp_orphan_retries;
168 	u8 sysctl_tcp_tw_reuse;
169 	int sysctl_tcp_fin_timeout;
170 	u8 sysctl_tcp_sack;
171 	u8 sysctl_tcp_window_scaling;
172 	u8 sysctl_tcp_timestamps;
173 	u8 sysctl_tcp_recovery;
174 	u8 sysctl_tcp_thin_linear_timeouts;
175 	u8 sysctl_tcp_slow_start_after_idle;
176 	u8 sysctl_tcp_retrans_collapse;
177 	u8 sysctl_tcp_stdurg;
178 	u8 sysctl_tcp_rfc1337;
179 	u8 sysctl_tcp_abort_on_overflow;
180 	u8 sysctl_tcp_fack; /* obsolete */
181 	int sysctl_tcp_max_reordering;
182 	int sysctl_tcp_adv_win_scale; /* obsolete */
183 	u8 sysctl_tcp_dsack;
184 	u8 sysctl_tcp_app_win;
185 	u8 sysctl_tcp_frto;
186 	u8 sysctl_tcp_nometrics_save;
187 	u8 sysctl_tcp_no_ssthresh_metrics_save;
188 	u8 sysctl_tcp_workaround_signed_windows;
189 	int sysctl_tcp_challenge_ack_limit;
190 	u8 sysctl_tcp_min_tso_segs;
191 	u8 sysctl_tcp_reflect_tos;
192 	int sysctl_tcp_invalid_ratelimit;
193 	int sysctl_tcp_pacing_ss_ratio;
194 	int sysctl_tcp_pacing_ca_ratio;
195 	unsigned int sysctl_tcp_child_ehash_entries;
196 	unsigned long sysctl_tcp_comp_sack_delay_ns;
197 	unsigned long sysctl_tcp_comp_sack_slack_ns;
198 	int sysctl_max_syn_backlog;
199 	int sysctl_tcp_fastopen;
200 	const struct tcp_congestion_ops __rcu  *tcp_congestion_control;
201 	struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
202 	unsigned int sysctl_tcp_fastopen_blackhole_timeout;
203 	atomic_t tfo_active_disable_times;
204 	unsigned long tfo_active_disable_stamp;
205 	u32 tcp_challenge_timestamp;
206 	u32 tcp_challenge_count;
207 	u8 sysctl_tcp_plb_enabled;
208 	u8 sysctl_tcp_plb_idle_rehash_rounds;
209 	u8 sysctl_tcp_plb_rehash_rounds;
210 	u8 sysctl_tcp_plb_suspend_rto_sec;
211 	int sysctl_tcp_plb_cong_thresh;
213 	int sysctl_udp_wmem_min;
214 	int sysctl_udp_rmem_min;
216 	u8 sysctl_fib_notify_on_flag_change;
217 	u8 sysctl_tcp_syn_linear_timeouts;
220 	u8 sysctl_udp_l3mdev_accept;
223 	u8 sysctl_igmp_llm_reports;
224 	int sysctl_igmp_max_memberships;
225 	int sysctl_igmp_max_msf;
226 	int sysctl_igmp_qrv;
228 	struct ping_group_range ping_group_range;
230 	atomic_t dev_addr_genid;
232 	unsigned int sysctl_udp_child_hash_entries;
235 	unsigned long *sysctl_local_reserved_ports;
236 	int sysctl_ip_prot_sock;
241 	struct mr_table		*mrt;
243 	struct list_head	mr_tables;
244 	struct fib_rules_ops	*mr_rules_ops;
248 	u32 sysctl_fib_multipath_hash_fields;
249 	u8 sysctl_fib_multipath_use_neigh;
250 	u8 sysctl_fib_multipath_hash_policy;
253 	struct fib_notifier_ops	*notifier_ops;
254 	unsigned int	fib_seq;	/* protected by rtnl_mutex */
256 	struct fib_notifier_ops	*ipmr_notifier_ops;
257 	unsigned int	ipmr_seq;	/* protected by rtnl_mutex */
259 	atomic_t	rt_genid;
260 	siphash_key_t	ip_id_key;