include/net/netns/ipv4.h

   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 ctl_table_header;
  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 #ifdef CONFIG_IP_MULTIPLE_TABLES
  53         struct fib_rules_ops    *rules_ops;
  54         bool                    fib_has_custom_rules;
  55         struct fib_table __rcu  *fib_main;
  56         struct fib_table __rcu  *fib_default;
  57 #endif
  58         bool                    fib_has_custom_local_routes;
  59 #ifdef CONFIG_IP_ROUTE_CLASSID
  60         int                     fib_num_tclassid_users;
  61 #endif
  62         struct hlist_head       *fib_table_hash;
  63         bool                    fib_offload_disabled;
  64         struct sock             *fibnl;
  65
  66         struct sock  * __percpu *icmp_sk;
  67         struct sock             *mc_autojoin_sk;
  68
  69         struct inet_peer_base   *peers;
  70         struct sock  * __percpu *tcp_sk;
  71         struct netns_frags      frags;
  72 #ifdef CONFIG_NETFILTER
  73         struct xt_table         *iptable_filter;
  74         struct xt_table         *iptable_mangle;
  75         struct xt_table         *iptable_raw;
  76         struct xt_table         *arptable_filter;
  77 #ifdef CONFIG_SECURITY
  78         struct xt_table         *iptable_security;
  79 #endif
  80         struct xt_table         *nat_table;
  81 #endif
  82
  83         int sysctl_icmp_echo_ignore_all;
  84         int sysctl_icmp_echo_ignore_broadcasts;
  85         int sysctl_icmp_ignore_bogus_error_responses;
  86         int sysctl_icmp_ratelimit;
  87         int sysctl_icmp_ratemask;
  88         int sysctl_icmp_errors_use_inbound_ifaddr;
  89
  90         struct local_ports ip_local_ports;
  91
  92         int sysctl_tcp_ecn;
  93         int sysctl_tcp_ecn_fallback;
  94
  95         int sysctl_ip_default_ttl;
  96         int sysctl_ip_no_pmtu_disc;
  97         int sysctl_ip_fwd_use_pmtu;
  98         int sysctl_ip_nonlocal_bind;
  99         /* Shall we try to damage output packets if routing dev changes? */
 100         int sysctl_ip_dynaddr;
 101         int sysctl_ip_early_demux;
 102         int sysctl_tcp_early_demux;
 103         int sysctl_udp_early_demux;
 104
 105         int sysctl_fwmark_reflect;
 106         int sysctl_tcp_fwmark_accept;
 107 #ifdef CONFIG_NET_L3_MASTER_DEV
 108         int sysctl_tcp_l3mdev_accept;
 109 #endif
 110         int sysctl_tcp_mtu_probing;
 111         int sysctl_tcp_base_mss;
 112         int sysctl_tcp_probe_threshold;
 113         u32 sysctl_tcp_probe_interval;
 114
 115         int sysctl_tcp_keepalive_time;
 116         int sysctl_tcp_keepalive_probes;
 117         int sysctl_tcp_keepalive_intvl;
 118
 119         int sysctl_tcp_syn_retries;
 120         int sysctl_tcp_synack_retries;
 121         int sysctl_tcp_syncookies;
 122         int sysctl_tcp_reordering;
 123         int sysctl_tcp_retries1;
 124         int sysctl_tcp_retries2;
 125         int sysctl_tcp_orphan_retries;
 126         int sysctl_tcp_fin_timeout;
 127         unsigned int sysctl_tcp_notsent_lowat;
 128         int sysctl_tcp_tw_reuse;
 129         int sysctl_tcp_sack;
 130         int sysctl_tcp_window_scaling;
 131         int sysctl_tcp_timestamps;
 132         int sysctl_tcp_early_retrans;
 133         int sysctl_tcp_recovery;
 134         int sysctl_tcp_thin_linear_timeouts;
 135         int sysctl_tcp_slow_start_after_idle;
 136         int sysctl_tcp_retrans_collapse;
 137         int sysctl_tcp_stdurg;
 138         int sysctl_tcp_rfc1337;
 139         int sysctl_tcp_abort_on_overflow;
 140         int sysctl_tcp_fack;
 141         int sysctl_tcp_max_reordering;
 142         int sysctl_tcp_dsack;
 143         int sysctl_tcp_app_win;
 144         int sysctl_tcp_adv_win_scale;
 145         int sysctl_tcp_frto;
 146         int sysctl_tcp_nometrics_save;
 147         int sysctl_tcp_moderate_rcvbuf;
 148         int sysctl_tcp_tso_win_divisor;
 149         int sysctl_tcp_workaround_signed_windows;
 150         int sysctl_tcp_limit_output_bytes;
 151         int sysctl_tcp_challenge_ack_limit;
 152         int sysctl_tcp_min_tso_segs;
 153         int sysctl_tcp_min_rtt_wlen;
 154         int sysctl_tcp_autocorking;
 155         int sysctl_tcp_invalid_ratelimit;
 156         int sysctl_tcp_pacing_ss_ratio;
 157         int sysctl_tcp_pacing_ca_ratio;
 158         int sysctl_tcp_wmem[3];
 159         int sysctl_tcp_rmem[3];
 160         struct inet_timewait_death_row tcp_death_row;
 161         int sysctl_max_syn_backlog;
 162         int sysctl_tcp_fastopen;
 163         const struct tcp_congestion_ops __rcu  *tcp_congestion_control;
 164         struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
 165         spinlock_t tcp_fastopen_ctx_lock;
 166         unsigned int sysctl_tcp_fastopen_blackhole_timeout;
 167         atomic_t tfo_active_disable_times;
 168         unsigned long tfo_active_disable_stamp;
 169
 170 #ifdef CONFIG_NET_L3_MASTER_DEV
 171         int sysctl_udp_l3mdev_accept;
 172 #endif
 173
 174         int sysctl_igmp_max_memberships;
 175         int sysctl_igmp_max_msf;
 176         int sysctl_igmp_llm_reports;
 177         int sysctl_igmp_qrv;
 178
 179         struct ping_group_range ping_group_range;
 180
 181         atomic_t dev_addr_genid;
 182
 183 #ifdef CONFIG_SYSCTL
 184         unsigned long *sysctl_local_reserved_ports;
 185         int sysctl_ip_prot_sock;
 186 #endif
 187
 188 #ifdef CONFIG_IP_MROUTE
 189 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
 190         struct mr_table         *mrt;
 191 #else
 192         struct list_head        mr_tables;
 193         struct fib_rules_ops    *mr_rules_ops;
 194 #endif
 195 #endif
 196 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 197         int sysctl_fib_multipath_use_neigh;
 198         int sysctl_fib_multipath_hash_policy;
 199 #endif
 200
 201         struct fib_notifier_ops *notifier_ops;
 202         unsigned int    fib_seq;        /* protected by rtnl_mutex */
 203
 204         struct fib_notifier_ops *ipmr_notifier_ops;
 205         unsigned int    ipmr_seq;       /* protected by rtnl_mutex */
 206
 207         atomic_t        rt_genid;
 208 };
 209 #endif