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