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 #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 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