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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * ipv4 in net namespaces
4 */
5
6#ifndef __NETNS_IPV4_H__
7#define __NETNS_IPV4_H__
8
9#include <linux/uidgid.h>
10#include <net/inet_frag.h>
11#include <linux/rcupdate.h>
12
13struct tcpm_hash_bucket;
14struct ctl_table_header;
15struct ipv4_devconf;
16struct fib_rules_ops;
17struct hlist_head;
18struct fib_table;
19struct sock;
20struct local_ports {
21 seqlock_t lock;
22 int range[2];
23 bool warned;
24};
25
26struct ping_group_range {
27 seqlock_t lock;
28 kgid_t range[2];
29};
30
31struct inet_hashinfo;
32
33struct inet_timewait_death_row {
34 atomic_t tw_count;
35
36 struct inet_hashinfo *hashinfo ____cacheline_aligned_in_smp;
37 int sysctl_max_tw_buckets;
38};
39
40struct tcp_fastopen_context;
41
42struct netns_ipv4 {
43#ifdef CONFIG_SYSCTL
44 struct ctl_table_header *forw_hdr;
45 struct ctl_table_header *frags_hdr;
46 struct ctl_table_header *ipv4_hdr;
47 struct ctl_table_header *route_hdr;
48 struct ctl_table_header *xfrm4_hdr;
49#endif
50 struct ipv4_devconf *devconf_all;
51 struct ipv4_devconf *devconf_dflt;
52 struct ip_ra_chain __rcu *ra_chain;
53 struct mutex ra_mutex;
54#ifdef CONFIG_IP_MULTIPLE_TABLES
55 struct fib_rules_ops *rules_ops;
56 bool fib_has_custom_rules;
57 unsigned int fib_rules_require_fldissect;
58 struct fib_table __rcu *fib_main;
59 struct fib_table __rcu *fib_default;
60#endif
61 bool fib_has_custom_local_routes;
62#ifdef CONFIG_IP_ROUTE_CLASSID
63 int fib_num_tclassid_users;
64#endif
65 struct hlist_head *fib_table_hash;
66 bool fib_offload_disabled;
67 struct sock *fibnl;
68
69 struct sock * __percpu *icmp_sk;
70 struct sock *mc_autojoin_sk;
71
72 struct inet_peer_base *peers;
73 struct sock * __percpu *tcp_sk;
74 struct netns_frags frags;
75#ifdef CONFIG_NETFILTER
76 struct xt_table *iptable_filter;
77 struct xt_table *iptable_mangle;
78 struct xt_table *iptable_raw;
79 struct xt_table *arptable_filter;
80#ifdef CONFIG_SECURITY
81 struct xt_table *iptable_security;
82#endif
83 struct xt_table *nat_table;
84#endif
85
86 int sysctl_icmp_echo_ignore_all;
87 int sysctl_icmp_echo_ignore_broadcasts;
88 int sysctl_icmp_ignore_bogus_error_responses;
89 int sysctl_icmp_ratelimit;
90 int sysctl_icmp_ratemask;
91 int sysctl_icmp_errors_use_inbound_ifaddr;
92
93 struct local_ports ip_local_ports;
94
95 int sysctl_tcp_ecn;
96 int sysctl_tcp_ecn_fallback;
97
98 int sysctl_ip_default_ttl;
99 int sysctl_ip_no_pmtu_disc;
100 int sysctl_ip_fwd_use_pmtu;
101 int sysctl_ip_nonlocal_bind;
102 /* Shall we try to damage output packets if routing dev changes? */
103 int sysctl_ip_dynaddr;
104 int sysctl_ip_early_demux;
105 int sysctl_tcp_early_demux;
106 int sysctl_udp_early_demux;
107
108 int sysctl_fwmark_reflect;
109 int sysctl_tcp_fwmark_accept;
110#ifdef CONFIG_NET_L3_MASTER_DEV
111 int sysctl_tcp_l3mdev_accept;
112#endif
113 int sysctl_tcp_mtu_probing;
114 int sysctl_tcp_base_mss;
115 int sysctl_tcp_probe_threshold;
116 u32 sysctl_tcp_probe_interval;
117
118 int sysctl_tcp_keepalive_time;
119 int sysctl_tcp_keepalive_probes;
120 int sysctl_tcp_keepalive_intvl;
121
122 int sysctl_tcp_syn_retries;
123 int sysctl_tcp_synack_retries;
124 int sysctl_tcp_syncookies;
125 int sysctl_tcp_reordering;
126 int sysctl_tcp_retries1;
127 int sysctl_tcp_retries2;
128 int sysctl_tcp_orphan_retries;
129 int sysctl_tcp_fin_timeout;
130 unsigned int sysctl_tcp_notsent_lowat;
131 int sysctl_tcp_tw_reuse;
132 int sysctl_tcp_sack;
133 int sysctl_tcp_window_scaling;
134 int sysctl_tcp_timestamps;
135 int sysctl_tcp_early_retrans;
136 int sysctl_tcp_recovery;
137 int sysctl_tcp_thin_linear_timeouts;
138 int sysctl_tcp_slow_start_after_idle;
139 int sysctl_tcp_retrans_collapse;
140 int sysctl_tcp_stdurg;
141 int sysctl_tcp_rfc1337;
142 int sysctl_tcp_abort_on_overflow;
143 int sysctl_tcp_fack;
144 int sysctl_tcp_max_reordering;
145 int sysctl_tcp_dsack;
146 int sysctl_tcp_app_win;
147 int sysctl_tcp_adv_win_scale;
148 int sysctl_tcp_frto;
149 int sysctl_tcp_nometrics_save;
150 int sysctl_tcp_moderate_rcvbuf;
151 int sysctl_tcp_tso_win_divisor;
152 int sysctl_tcp_workaround_signed_windows;
153 int sysctl_tcp_limit_output_bytes;
154 int sysctl_tcp_challenge_ack_limit;
155 int sysctl_tcp_min_tso_segs;
156 int sysctl_tcp_min_rtt_wlen;
157 int sysctl_tcp_autocorking;
158 int sysctl_tcp_invalid_ratelimit;
159 int sysctl_tcp_pacing_ss_ratio;
160 int sysctl_tcp_pacing_ca_ratio;
161 int sysctl_tcp_wmem[3];
162 int sysctl_tcp_rmem[3];
163 struct inet_timewait_death_row tcp_death_row;
164 int sysctl_max_syn_backlog;
165 int sysctl_tcp_fastopen;
166 const struct tcp_congestion_ops __rcu *tcp_congestion_control;
167 struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
168 spinlock_t tcp_fastopen_ctx_lock;
169 unsigned int sysctl_tcp_fastopen_blackhole_timeout;
170 atomic_t tfo_active_disable_times;
171 unsigned long tfo_active_disable_stamp;
172
173 int sysctl_udp_wmem_min;
174 int sysctl_udp_rmem_min;
175
176#ifdef CONFIG_NET_L3_MASTER_DEV
177 int sysctl_udp_l3mdev_accept;
178#endif
179
180 int sysctl_igmp_max_memberships;
181 int sysctl_igmp_max_msf;
182 int sysctl_igmp_llm_reports;
183 int sysctl_igmp_qrv;
184
185 struct ping_group_range ping_group_range;
186
187 atomic_t dev_addr_genid;
188
189#ifdef CONFIG_SYSCTL
190 unsigned long *sysctl_local_reserved_ports;
191 int sysctl_ip_prot_sock;
192#endif
193
194#ifdef CONFIG_IP_MROUTE
195#ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
196 struct mr_table *mrt;
197#else
198 struct list_head mr_tables;
199 struct fib_rules_ops *mr_rules_ops;
200#endif
201#endif
202#ifdef CONFIG_IP_ROUTE_MULTIPATH
203 int sysctl_fib_multipath_use_neigh;
204 int sysctl_fib_multipath_hash_policy;
205#endif
206
207 struct fib_notifier_ops *notifier_ops;
208 unsigned int fib_seq; /* protected by rtnl_mutex */
209
210 struct fib_notifier_ops *ipmr_notifier_ops;
211 unsigned int ipmr_seq; /* protected by rtnl_mutex */
212
213 atomic_t rt_genid;
214};
215#endif
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * ipv4 in net namespaces
4 */
5
6#ifndef __NETNS_IPV4_H__
7#define __NETNS_IPV4_H__
8
9#include <linux/uidgid.h>
10#include <net/inet_frag.h>
11#include <linux/rcupdate.h>
12#include <linux/seqlock.h>
13#include <linux/siphash.h>
14
15struct ctl_table_header;
16struct ipv4_devconf;
17struct fib_rules_ops;
18struct hlist_head;
19struct fib_table;
20struct sock;
21struct local_ports {
22 seqlock_t lock;
23 int range[2];
24 bool warned;
25};
26
27struct ping_group_range {
28 seqlock_t lock;
29 kgid_t range[2];
30};
31
32struct inet_hashinfo;
33
34struct inet_timewait_death_row {
35 refcount_t tw_refcount;
36
37 /* Padding to avoid false sharing, tw_refcount can be often written */
38 struct inet_hashinfo *hashinfo ____cacheline_aligned_in_smp;
39 int sysctl_max_tw_buckets;
40};
41
42struct tcp_fastopen_context;
43
44struct netns_ipv4 {
45 struct inet_timewait_death_row tcp_death_row;
46 struct udp_table *udp_table;
47
48#ifdef CONFIG_SYSCTL
49 struct ctl_table_header *forw_hdr;
50 struct ctl_table_header *frags_hdr;
51 struct ctl_table_header *ipv4_hdr;
52 struct ctl_table_header *route_hdr;
53 struct ctl_table_header *xfrm4_hdr;
54#endif
55 struct ipv4_devconf *devconf_all;
56 struct ipv4_devconf *devconf_dflt;
57 struct ip_ra_chain __rcu *ra_chain;
58 struct mutex ra_mutex;
59#ifdef CONFIG_IP_MULTIPLE_TABLES
60 struct fib_rules_ops *rules_ops;
61 struct fib_table __rcu *fib_main;
62 struct fib_table __rcu *fib_default;
63 unsigned int fib_rules_require_fldissect;
64 bool fib_has_custom_rules;
65#endif
66 bool fib_has_custom_local_routes;
67 bool fib_offload_disabled;
68#ifdef CONFIG_IP_ROUTE_CLASSID
69 atomic_t fib_num_tclassid_users;
70#endif
71 struct hlist_head *fib_table_hash;
72 struct sock *fibnl;
73
74 struct sock *mc_autojoin_sk;
75
76 struct inet_peer_base *peers;
77 struct fqdir *fqdir;
78
79 u8 sysctl_icmp_echo_ignore_all;
80 u8 sysctl_icmp_echo_enable_probe;
81 u8 sysctl_icmp_echo_ignore_broadcasts;
82 u8 sysctl_icmp_ignore_bogus_error_responses;
83 u8 sysctl_icmp_errors_use_inbound_ifaddr;
84 int sysctl_icmp_ratelimit;
85 int sysctl_icmp_ratemask;
86
87 u32 ip_rt_min_pmtu;
88 int ip_rt_mtu_expires;
89 int ip_rt_min_advmss;
90
91 struct local_ports ip_local_ports;
92
93 u8 sysctl_tcp_ecn;
94 u8 sysctl_tcp_ecn_fallback;
95
96 u8 sysctl_ip_default_ttl;
97 u8 sysctl_ip_no_pmtu_disc;
98 u8 sysctl_ip_fwd_use_pmtu;
99 u8 sysctl_ip_fwd_update_priority;
100 u8 sysctl_ip_nonlocal_bind;
101 u8 sysctl_ip_autobind_reuse;
102 /* Shall we try to damage output packets if routing dev changes? */
103 u8 sysctl_ip_dynaddr;
104 u8 sysctl_ip_early_demux;
105#ifdef CONFIG_NET_L3_MASTER_DEV
106 u8 sysctl_raw_l3mdev_accept;
107#endif
108 u8 sysctl_tcp_early_demux;
109 u8 sysctl_udp_early_demux;
110
111 u8 sysctl_nexthop_compat_mode;
112
113 u8 sysctl_fwmark_reflect;
114 u8 sysctl_tcp_fwmark_accept;
115#ifdef CONFIG_NET_L3_MASTER_DEV
116 u8 sysctl_tcp_l3mdev_accept;
117#endif
118 u8 sysctl_tcp_mtu_probing;
119 int sysctl_tcp_mtu_probe_floor;
120 int sysctl_tcp_base_mss;
121 int sysctl_tcp_min_snd_mss;
122 int sysctl_tcp_probe_threshold;
123 u32 sysctl_tcp_probe_interval;
124
125 int sysctl_tcp_keepalive_time;
126 int sysctl_tcp_keepalive_intvl;
127 u8 sysctl_tcp_keepalive_probes;
128
129 u8 sysctl_tcp_syn_retries;
130 u8 sysctl_tcp_synack_retries;
131 u8 sysctl_tcp_syncookies;
132 u8 sysctl_tcp_migrate_req;
133 u8 sysctl_tcp_comp_sack_nr;
134 int sysctl_tcp_reordering;
135 u8 sysctl_tcp_retries1;
136 u8 sysctl_tcp_retries2;
137 u8 sysctl_tcp_orphan_retries;
138 u8 sysctl_tcp_tw_reuse;
139 int sysctl_tcp_fin_timeout;
140 unsigned int sysctl_tcp_notsent_lowat;
141 u8 sysctl_tcp_sack;
142 u8 sysctl_tcp_window_scaling;
143 u8 sysctl_tcp_timestamps;
144 u8 sysctl_tcp_early_retrans;
145 u8 sysctl_tcp_recovery;
146 u8 sysctl_tcp_thin_linear_timeouts;
147 u8 sysctl_tcp_slow_start_after_idle;
148 u8 sysctl_tcp_retrans_collapse;
149 u8 sysctl_tcp_stdurg;
150 u8 sysctl_tcp_rfc1337;
151 u8 sysctl_tcp_abort_on_overflow;
152 u8 sysctl_tcp_fack; /* obsolete */
153 int sysctl_tcp_max_reordering;
154 int sysctl_tcp_adv_win_scale;
155 u8 sysctl_tcp_dsack;
156 u8 sysctl_tcp_app_win;
157 u8 sysctl_tcp_frto;
158 u8 sysctl_tcp_nometrics_save;
159 u8 sysctl_tcp_no_ssthresh_metrics_save;
160 u8 sysctl_tcp_moderate_rcvbuf;
161 u8 sysctl_tcp_tso_win_divisor;
162 u8 sysctl_tcp_workaround_signed_windows;
163 int sysctl_tcp_limit_output_bytes;
164 int sysctl_tcp_challenge_ack_limit;
165 int sysctl_tcp_min_rtt_wlen;
166 u8 sysctl_tcp_min_tso_segs;
167 u8 sysctl_tcp_tso_rtt_log;
168 u8 sysctl_tcp_autocorking;
169 u8 sysctl_tcp_reflect_tos;
170 int sysctl_tcp_invalid_ratelimit;
171 int sysctl_tcp_pacing_ss_ratio;
172 int sysctl_tcp_pacing_ca_ratio;
173 int sysctl_tcp_wmem[3];
174 int sysctl_tcp_rmem[3];
175 unsigned int sysctl_tcp_child_ehash_entries;
176 unsigned long sysctl_tcp_comp_sack_delay_ns;
177 unsigned long sysctl_tcp_comp_sack_slack_ns;
178 int sysctl_max_syn_backlog;
179 int sysctl_tcp_fastopen;
180 const struct tcp_congestion_ops __rcu *tcp_congestion_control;
181 struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
182 unsigned int sysctl_tcp_fastopen_blackhole_timeout;
183 atomic_t tfo_active_disable_times;
184 unsigned long tfo_active_disable_stamp;
185 u32 tcp_challenge_timestamp;
186 u32 tcp_challenge_count;
187 u8 sysctl_tcp_plb_enabled;
188 u8 sysctl_tcp_plb_idle_rehash_rounds;
189 u8 sysctl_tcp_plb_rehash_rounds;
190 u8 sysctl_tcp_plb_suspend_rto_sec;
191 int sysctl_tcp_plb_cong_thresh;
192
193 int sysctl_udp_wmem_min;
194 int sysctl_udp_rmem_min;
195
196 u8 sysctl_fib_notify_on_flag_change;
197
198#ifdef CONFIG_NET_L3_MASTER_DEV
199 u8 sysctl_udp_l3mdev_accept;
200#endif
201
202 u8 sysctl_igmp_llm_reports;
203 int sysctl_igmp_max_memberships;
204 int sysctl_igmp_max_msf;
205 int sysctl_igmp_qrv;
206
207 struct ping_group_range ping_group_range;
208
209 atomic_t dev_addr_genid;
210
211 unsigned int sysctl_udp_child_hash_entries;
212
213#ifdef CONFIG_SYSCTL
214 unsigned long *sysctl_local_reserved_ports;
215 int sysctl_ip_prot_sock;
216#endif
217
218#ifdef CONFIG_IP_MROUTE
219#ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
220 struct mr_table *mrt;
221#else
222 struct list_head mr_tables;
223 struct fib_rules_ops *mr_rules_ops;
224#endif
225#endif
226#ifdef CONFIG_IP_ROUTE_MULTIPATH
227 u32 sysctl_fib_multipath_hash_fields;
228 u8 sysctl_fib_multipath_use_neigh;
229 u8 sysctl_fib_multipath_hash_policy;
230#endif
231
232 struct fib_notifier_ops *notifier_ops;
233 unsigned int fib_seq; /* protected by rtnl_mutex */
234
235 struct fib_notifier_ops *ipmr_notifier_ops;
236 unsigned int ipmr_seq; /* protected by rtnl_mutex */
237
238 atomic_t rt_genid;
239 siphash_key_t ip_id_key;
240};
241#endif