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         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         int sysctl_tcp_comp_sack_nr;
 164         unsigned long sysctl_tcp_comp_sack_delay_ns;
 165         struct inet_timewait_death_row tcp_death_row;
 166         int sysctl_max_syn_backlog;
 167         int sysctl_tcp_fastopen;
 168         const struct tcp_congestion_ops __rcu  *tcp_congestion_control;
 169         struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
 170         spinlock_t tcp_fastopen_ctx_lock;
 171         unsigned int sysctl_tcp_fastopen_blackhole_timeout;
 172         atomic_t tfo_active_disable_times;
 173         unsigned long tfo_active_disable_stamp;
 174
 175         int sysctl_udp_wmem_min;
 176         int sysctl_udp_rmem_min;
 177
 178 #ifdef CONFIG_NET_L3_MASTER_DEV
 179         int sysctl_udp_l3mdev_accept;
 180 #endif
 181
 182         int sysctl_igmp_max_memberships;
 183         int sysctl_igmp_max_msf;
 184         int sysctl_igmp_llm_reports;
 185         int sysctl_igmp_qrv;
 186
 187         struct ping_group_range ping_group_range;
 188
 189         atomic_t dev_addr_genid;
 190
 191 #ifdef CONFIG_SYSCTL
 192         unsigned long *sysctl_local_reserved_ports;
 193         int sysctl_ip_prot_sock;
 194 #endif
 195
 196 #ifdef CONFIG_IP_MROUTE
 197 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
 198         struct mr_table         *mrt;
 199 #else
 200         struct list_head        mr_tables;
 201         struct fib_rules_ops    *mr_rules_ops;
 202 #endif
 203 #endif
 204 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 205         int sysctl_fib_multipath_use_neigh;
 206         int sysctl_fib_multipath_hash_policy;
 207 #endif
 208
 209         struct fib_notifier_ops *notifier_ops;
 210         unsigned int    fib_seq;        /* protected by rtnl_mutex */
 211
 212         struct fib_notifier_ops *ipmr_notifier_ops;
 213         unsigned int    ipmr_seq;       /* protected by rtnl_mutex */
 214
 215         atomic_t        rt_genid;
 216 };
 217 #endif