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 | |
13 | struct tcpm_hash_bucket; |
14 | struct ; |
15 | struct ipv4_devconf; |
16 | struct fib_rules_ops; |
17 | struct hlist_head; |
18 | struct fib_table; |
19 | struct sock; |
20 | struct local_ports { |
21 | seqlock_t lock; |
22 | int range[2]; |
23 | bool warned; |
24 | }; |
25 | |
26 | struct ping_group_range { |
27 | seqlock_t lock; |
28 | kgid_t range[2]; |
29 | }; |
30 | |
31 | struct inet_hashinfo; |
32 | |
33 | struct 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 | |
40 | struct tcp_fastopen_context; |
41 | |
42 | struct 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_fwd_update_priority; |
102 | int sysctl_ip_nonlocal_bind; |
103 | /* Shall we try to damage output packets if routing dev changes? */ |
104 | int sysctl_ip_dynaddr; |
105 | int sysctl_ip_early_demux; |
106 | #ifdef CONFIG_NET_L3_MASTER_DEV |
107 | int sysctl_raw_l3mdev_accept; |
108 | #endif |
109 | int sysctl_tcp_early_demux; |
110 | int sysctl_udp_early_demux; |
111 | |
112 | int sysctl_fwmark_reflect; |
113 | int sysctl_tcp_fwmark_accept; |
114 | #ifdef CONFIG_NET_L3_MASTER_DEV |
115 | int sysctl_tcp_l3mdev_accept; |
116 | #endif |
117 | int sysctl_tcp_mtu_probing; |
118 | int sysctl_tcp_base_mss; |
119 | int sysctl_tcp_probe_threshold; |
120 | u32 sysctl_tcp_probe_interval; |
121 | |
122 | int sysctl_tcp_keepalive_time; |
123 | int sysctl_tcp_keepalive_probes; |
124 | int sysctl_tcp_keepalive_intvl; |
125 | |
126 | int sysctl_tcp_syn_retries; |
127 | int sysctl_tcp_synack_retries; |
128 | int sysctl_tcp_syncookies; |
129 | int sysctl_tcp_reordering; |
130 | int sysctl_tcp_retries1; |
131 | int sysctl_tcp_retries2; |
132 | int sysctl_tcp_orphan_retries; |
133 | int sysctl_tcp_fin_timeout; |
134 | unsigned int sysctl_tcp_notsent_lowat; |
135 | int sysctl_tcp_tw_reuse; |
136 | int sysctl_tcp_sack; |
137 | int sysctl_tcp_window_scaling; |
138 | int sysctl_tcp_timestamps; |
139 | int sysctl_tcp_early_retrans; |
140 | int sysctl_tcp_recovery; |
141 | int sysctl_tcp_thin_linear_timeouts; |
142 | int sysctl_tcp_slow_start_after_idle; |
143 | int sysctl_tcp_retrans_collapse; |
144 | int sysctl_tcp_stdurg; |
145 | int sysctl_tcp_rfc1337; |
146 | int sysctl_tcp_abort_on_overflow; |
147 | int sysctl_tcp_fack; |
148 | int sysctl_tcp_max_reordering; |
149 | int sysctl_tcp_dsack; |
150 | int sysctl_tcp_app_win; |
151 | int sysctl_tcp_adv_win_scale; |
152 | int sysctl_tcp_frto; |
153 | int sysctl_tcp_nometrics_save; |
154 | int sysctl_tcp_moderate_rcvbuf; |
155 | int sysctl_tcp_tso_win_divisor; |
156 | int sysctl_tcp_workaround_signed_windows; |
157 | int sysctl_tcp_limit_output_bytes; |
158 | int sysctl_tcp_challenge_ack_limit; |
159 | int sysctl_tcp_min_tso_segs; |
160 | int sysctl_tcp_min_rtt_wlen; |
161 | int sysctl_tcp_autocorking; |
162 | int sysctl_tcp_invalid_ratelimit; |
163 | int sysctl_tcp_pacing_ss_ratio; |
164 | int sysctl_tcp_pacing_ca_ratio; |
165 | int sysctl_tcp_wmem[3]; |
166 | int sysctl_tcp_rmem[3]; |
167 | int sysctl_tcp_comp_sack_nr; |
168 | unsigned long sysctl_tcp_comp_sack_delay_ns; |
169 | struct inet_timewait_death_row tcp_death_row; |
170 | int sysctl_max_syn_backlog; |
171 | int sysctl_tcp_fastopen; |
172 | const struct tcp_congestion_ops __rcu *tcp_congestion_control; |
173 | struct tcp_fastopen_context __rcu *tcp_fastopen_ctx; |
174 | spinlock_t tcp_fastopen_ctx_lock; |
175 | unsigned int sysctl_tcp_fastopen_blackhole_timeout; |
176 | atomic_t tfo_active_disable_times; |
177 | unsigned long tfo_active_disable_stamp; |
178 | |
179 | int sysctl_udp_wmem_min; |
180 | int sysctl_udp_rmem_min; |
181 | |
182 | #ifdef CONFIG_NET_L3_MASTER_DEV |
183 | int sysctl_udp_l3mdev_accept; |
184 | #endif |
185 | |
186 | int sysctl_igmp_max_memberships; |
187 | int sysctl_igmp_max_msf; |
188 | int sysctl_igmp_llm_reports; |
189 | int sysctl_igmp_qrv; |
190 | |
191 | struct ping_group_range ping_group_range; |
192 | |
193 | atomic_t dev_addr_genid; |
194 | |
195 | #ifdef CONFIG_SYSCTL |
196 | unsigned long *sysctl_local_reserved_ports; |
197 | int sysctl_ip_prot_sock; |
198 | #endif |
199 | |
200 | #ifdef CONFIG_IP_MROUTE |
201 | #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES |
202 | struct mr_table *mrt; |
203 | #else |
204 | struct list_head mr_tables; |
205 | struct fib_rules_ops *mr_rules_ops; |
206 | #endif |
207 | #endif |
208 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
209 | int sysctl_fib_multipath_use_neigh; |
210 | int sysctl_fib_multipath_hash_policy; |
211 | #endif |
212 | |
213 | struct fib_notifier_ops *notifier_ops; |
214 | unsigned int fib_seq; /* protected by rtnl_mutex */ |
215 | |
216 | struct fib_notifier_ops *ipmr_notifier_ops; |
217 | unsigned int ipmr_seq; /* protected by rtnl_mutex */ |
218 | |
219 | atomic_t rt_genid; |
220 | }; |
221 | #endif |
222 | |