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TOMOYO Linux Cross Reference
Linux/include/net/netns/ipv4.h

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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 
 14 struct tcpm_hash_bucket;
 15 struct ctl_table_header;
 16 struct ipv4_devconf;
 17 struct fib_rules_ops;
 18 struct hlist_head;
 19 struct fib_table;
 20 struct sock;
 21 struct local_ports {
 22         seqlock_t       lock;
 23         int             range[2];
 24         bool            warned;
 25 };
 26 
 27 struct ping_group_range {
 28         seqlock_t       lock;
 29         kgid_t          range[2];
 30 };
 31 
 32 struct inet_hashinfo;
 33 
 34 struct 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 
 41 struct tcp_fastopen_context;
 42 
 43 struct 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 netns_frags      frags;
 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_base_mss;
120         int sysctl_tcp_min_snd_mss;
121         int sysctl_tcp_probe_threshold;
122         u32 sysctl_tcp_probe_interval;
123 
124         int sysctl_tcp_keepalive_time;
125         int sysctl_tcp_keepalive_probes;
126         int sysctl_tcp_keepalive_intvl;
127 
128         int sysctl_tcp_syn_retries;
129         int sysctl_tcp_synack_retries;
130         int sysctl_tcp_syncookies;
131         int sysctl_tcp_reordering;
132         int sysctl_tcp_retries1;
133         int sysctl_tcp_retries2;
134         int sysctl_tcp_orphan_retries;
135         int sysctl_tcp_fin_timeout;
136         unsigned int sysctl_tcp_notsent_lowat;
137         int sysctl_tcp_tw_reuse;
138         int sysctl_tcp_sack;
139         int sysctl_tcp_window_scaling;
140         int sysctl_tcp_timestamps;
141         int sysctl_tcp_early_retrans;
142         int sysctl_tcp_recovery;
143         int sysctl_tcp_thin_linear_timeouts;
144         int sysctl_tcp_slow_start_after_idle;
145         int sysctl_tcp_retrans_collapse;
146         int sysctl_tcp_stdurg;
147         int sysctl_tcp_rfc1337;
148         int sysctl_tcp_abort_on_overflow;
149         int sysctl_tcp_fack;
150         int sysctl_tcp_max_reordering;
151         int sysctl_tcp_dsack;
152         int sysctl_tcp_app_win;
153         int sysctl_tcp_adv_win_scale;
154         int sysctl_tcp_frto;
155         int sysctl_tcp_nometrics_save;
156         int sysctl_tcp_moderate_rcvbuf;
157         int sysctl_tcp_tso_win_divisor;
158         int sysctl_tcp_workaround_signed_windows;
159         int sysctl_tcp_limit_output_bytes;
160         int sysctl_tcp_challenge_ack_limit;
161         int sysctl_tcp_min_tso_segs;
162         int sysctl_tcp_min_rtt_wlen;
163         int sysctl_tcp_autocorking;
164         int sysctl_tcp_invalid_ratelimit;
165         int sysctl_tcp_pacing_ss_ratio;
166         int sysctl_tcp_pacing_ca_ratio;
167         int sysctl_tcp_wmem[3];
168         int sysctl_tcp_rmem[3];
169         int sysctl_tcp_comp_sack_nr;
170         unsigned long sysctl_tcp_comp_sack_delay_ns;
171         struct inet_timewait_death_row tcp_death_row;
172         int sysctl_max_syn_backlog;
173         int sysctl_tcp_fastopen;
174         const struct tcp_congestion_ops __rcu  *tcp_congestion_control;
175         struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
176         spinlock_t tcp_fastopen_ctx_lock;
177         unsigned int sysctl_tcp_fastopen_blackhole_timeout;
178         atomic_t tfo_active_disable_times;
179         unsigned long tfo_active_disable_stamp;
180 
181         int sysctl_udp_wmem_min;
182         int sysctl_udp_rmem_min;
183 
184 #ifdef CONFIG_NET_L3_MASTER_DEV
185         int sysctl_udp_l3mdev_accept;
186 #endif
187 
188         int sysctl_igmp_max_memberships;
189         int sysctl_igmp_max_msf;
190         int sysctl_igmp_llm_reports;
191         int sysctl_igmp_qrv;
192 
193         struct ping_group_range ping_group_range;
194 
195         atomic_t dev_addr_genid;
196 
197 #ifdef CONFIG_SYSCTL
198         unsigned long *sysctl_local_reserved_ports;
199         int sysctl_ip_prot_sock;
200 #endif
201 
202 #ifdef CONFIG_IP_MROUTE
203 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
204         struct mr_table         *mrt;
205 #else
206         struct list_head        mr_tables;
207         struct fib_rules_ops    *mr_rules_ops;
208 #endif
209 #endif
210 #ifdef CONFIG_IP_ROUTE_MULTIPATH
211         int sysctl_fib_multipath_use_neigh;
212         int sysctl_fib_multipath_hash_policy;
213 #endif
214 
215         struct fib_notifier_ops *notifier_ops;
216         unsigned int    fib_seq;        /* protected by rtnl_mutex */
217 
218         struct fib_notifier_ops *ipmr_notifier_ops;
219         unsigned int    ipmr_seq;       /* protected by rtnl_mutex */
220 
221         atomic_t        rt_genid;
222         siphash_key_t   ip_id_key;
223 };
224 #endif
225 

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