| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* | |
| * ipv4 in net namespaces | |
| */ | |
| #ifndef __NETNS_IPV4_H__ | |
| #define __NETNS_IPV4_H__ | |
| #include <linux/uidgid.h> | |
| #include <net/inet_frag.h> | |
| #include <linux/rcupdate.h> | |
| #include <linux/seqlock.h> | |
| #include <linux/siphash.h> | |
| struct ctl_table_header; | |
| struct ipv4_devconf; | |
| struct fib_rules_ops; | |
| struct hlist_head; | |
| struct fib_table; | |
| struct sock; | |
| struct local_ports { | |
| seqlock_t lock; | |
| int range[2]; | |
| bool warned; | |
| }; | |
| struct ping_group_range { | |
| seqlock_t lock; | |
| kgid_t range[2]; | |
| }; | |
| struct inet_hashinfo; | |
| struct inet_timewait_death_row { | |
| refcount_t tw_refcount; | |
| /* Padding to avoid false sharing, tw_refcount can be often written */ | |
| struct inet_hashinfo *hashinfo ____cacheline_aligned_in_smp; | |
| int sysctl_max_tw_buckets; | |
| }; | |
| struct tcp_fastopen_context; | |
| struct netns_ipv4 { | |
| /* Cacheline organization can be found documented in | |
| * Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst. | |
| * Please update the document when adding new fields. | |
| */ | |
| /* TX readonly hotpath cache lines */ | |
| __cacheline_group_begin(netns_ipv4_read_tx); | |
| u8 sysctl_tcp_early_retrans; | |
| u8 sysctl_tcp_tso_win_divisor; | |
| u8 sysctl_tcp_tso_rtt_log; | |
| u8 sysctl_tcp_autocorking; | |
| int sysctl_tcp_min_snd_mss; | |
| unsigned int sysctl_tcp_notsent_lowat; | |
| int sysctl_tcp_limit_output_bytes; | |
| int sysctl_tcp_min_rtt_wlen; | |
| int sysctl_tcp_wmem[3]; | |
| u8 sysctl_ip_fwd_use_pmtu; | |
| __cacheline_group_end(netns_ipv4_read_tx); | |
| /* TXRX readonly hotpath cache lines */ | |
| __cacheline_group_begin(netns_ipv4_read_txrx); | |
| u8 sysctl_tcp_moderate_rcvbuf; | |
| __cacheline_group_end(netns_ipv4_read_txrx); | |
| /* RX readonly hotpath cache line */ | |
| __cacheline_group_begin(netns_ipv4_read_rx); | |
| u8 sysctl_ip_early_demux; | |
| u8 sysctl_tcp_early_demux; | |
| int sysctl_tcp_reordering; | |
| int sysctl_tcp_rmem[3]; | |
| __cacheline_group_end(netns_ipv4_read_rx); | |
| /* ICMP rate limiter hot cache line. */ | |
| __cacheline_group_begin_aligned(icmp); | |
| atomic_t icmp_global_credit; | |
| u32 icmp_global_stamp; | |
| __cacheline_group_end_aligned(icmp); | |
| struct inet_timewait_death_row tcp_death_row; | |
| struct udp_table *udp_table; | |
| #ifdef CONFIG_SYSCTL | |
| struct ctl_table_header *forw_hdr; | |
| struct ctl_table_header *frags_hdr; | |
| struct ctl_table_header *ipv4_hdr; | |
| struct ctl_table_header *route_hdr; | |
| struct ctl_table_header *xfrm4_hdr; | |
| #endif | |
| struct ipv4_devconf *devconf_all; | |
| struct ipv4_devconf *devconf_dflt; | |
| struct ip_ra_chain __rcu *ra_chain; | |
| struct mutex ra_mutex; | |
| #ifdef CONFIG_IP_MULTIPLE_TABLES | |
| struct fib_rules_ops *rules_ops; | |
| struct fib_table __rcu *fib_main; | |
| struct fib_table __rcu *fib_default; | |
| unsigned int fib_rules_require_fldissect; | |
| bool fib_has_custom_rules; | |
| #endif | |
| bool fib_has_custom_local_routes; | |
| bool fib_offload_disabled; | |
| u8 sysctl_tcp_shrink_window; | |
| #ifdef CONFIG_IP_ROUTE_CLASSID | |
| atomic_t fib_num_tclassid_users; | |
| #endif | |
| struct hlist_head *fib_table_hash; | |
| struct sock *fibnl; | |
| struct sock *mc_autojoin_sk; | |
| struct inet_peer_base *peers; | |
| struct fqdir *fqdir; | |
| u8 sysctl_icmp_echo_ignore_all; | |
| u8 sysctl_icmp_echo_enable_probe; | |
| u8 sysctl_icmp_echo_ignore_broadcasts; | |
| u8 sysctl_icmp_ignore_bogus_error_responses; | |
| u8 sysctl_icmp_errors_use_inbound_ifaddr; | |
| int sysctl_icmp_ratelimit; | |
| int sysctl_icmp_ratemask; | |
| int sysctl_icmp_msgs_per_sec; | |
| int sysctl_icmp_msgs_burst; | |
| u32 ip_rt_min_pmtu; | |
| int ip_rt_mtu_expires; | |
| int ip_rt_min_advmss; | |
| struct local_ports ip_local_ports; | |
| u8 sysctl_tcp_ecn; | |
| u8 sysctl_tcp_ecn_fallback; | |
| u8 sysctl_ip_default_ttl; | |
| u8 sysctl_ip_no_pmtu_disc; | |
| u8 sysctl_ip_fwd_update_priority; | |
| u8 sysctl_ip_nonlocal_bind; | |
| u8 sysctl_ip_autobind_reuse; | |
| /* Shall we try to damage output packets if routing dev changes? */ | |
| u8 sysctl_ip_dynaddr; | |
| #ifdef CONFIG_NET_L3_MASTER_DEV | |
| u8 sysctl_raw_l3mdev_accept; | |
| #endif | |
| u8 sysctl_udp_early_demux; | |
| u8 sysctl_nexthop_compat_mode; | |
| u8 sysctl_fwmark_reflect; | |
| u8 sysctl_tcp_fwmark_accept; | |
| #ifdef CONFIG_NET_L3_MASTER_DEV | |
| u8 sysctl_tcp_l3mdev_accept; | |
| #endif | |
| u8 sysctl_tcp_mtu_probing; | |
| int sysctl_tcp_mtu_probe_floor; | |
| int sysctl_tcp_base_mss; | |
| int sysctl_tcp_probe_threshold; | |
| u32 sysctl_tcp_probe_interval; | |
| int sysctl_tcp_keepalive_time; | |
| int sysctl_tcp_keepalive_intvl; | |
| u8 sysctl_tcp_keepalive_probes; | |
| u8 sysctl_tcp_syn_retries; | |
| u8 sysctl_tcp_synack_retries; | |
| u8 sysctl_tcp_syncookies; | |
| u8 sysctl_tcp_migrate_req; | |
| u8 sysctl_tcp_comp_sack_nr; | |
| u8 sysctl_tcp_backlog_ack_defer; | |
| u8 sysctl_tcp_pingpong_thresh; | |
| u8 sysctl_tcp_retries1; | |
| u8 sysctl_tcp_retries2; | |
| u8 sysctl_tcp_orphan_retries; | |
| u8 sysctl_tcp_tw_reuse; | |
| int sysctl_tcp_fin_timeout; | |
| u8 sysctl_tcp_sack; | |
| u8 sysctl_tcp_window_scaling; | |
| u8 sysctl_tcp_timestamps; | |
| int sysctl_tcp_rto_min_us; | |
| u8 sysctl_tcp_recovery; | |
| u8 sysctl_tcp_thin_linear_timeouts; | |
| u8 sysctl_tcp_slow_start_after_idle; | |
| u8 sysctl_tcp_retrans_collapse; | |
| u8 sysctl_tcp_stdurg; | |
| u8 sysctl_tcp_rfc1337; | |
| u8 sysctl_tcp_abort_on_overflow; | |
| u8 sysctl_tcp_fack; /* obsolete */ | |
| int sysctl_tcp_max_reordering; | |
| int sysctl_tcp_adv_win_scale; /* obsolete */ | |
| u8 sysctl_tcp_dsack; | |
| u8 sysctl_tcp_app_win; | |
| u8 sysctl_tcp_frto; | |
| u8 sysctl_tcp_nometrics_save; | |
| u8 sysctl_tcp_no_ssthresh_metrics_save; | |
| u8 sysctl_tcp_workaround_signed_windows; | |
| int sysctl_tcp_challenge_ack_limit; | |
| u8 sysctl_tcp_min_tso_segs; | |
| u8 sysctl_tcp_reflect_tos; | |
| int sysctl_tcp_invalid_ratelimit; | |
| int sysctl_tcp_pacing_ss_ratio; | |
| int sysctl_tcp_pacing_ca_ratio; | |
| unsigned int sysctl_tcp_child_ehash_entries; | |
| unsigned long sysctl_tcp_comp_sack_delay_ns; | |
| unsigned long sysctl_tcp_comp_sack_slack_ns; | |
| int sysctl_max_syn_backlog; | |
| int sysctl_tcp_fastopen; | |
| const struct tcp_congestion_ops __rcu *tcp_congestion_control; | |
| struct tcp_fastopen_context __rcu *tcp_fastopen_ctx; | |
| unsigned int sysctl_tcp_fastopen_blackhole_timeout; | |
| atomic_t tfo_active_disable_times; | |
| unsigned long tfo_active_disable_stamp; | |
| u32 tcp_challenge_timestamp; | |
| u32 tcp_challenge_count; | |
| u8 sysctl_tcp_plb_enabled; | |
| u8 sysctl_tcp_plb_idle_rehash_rounds; | |
| u8 sysctl_tcp_plb_rehash_rounds; | |
| u8 sysctl_tcp_plb_suspend_rto_sec; | |
| int sysctl_tcp_plb_cong_thresh; | |
| int sysctl_udp_wmem_min; | |
| int sysctl_udp_rmem_min; | |
| u8 sysctl_fib_notify_on_flag_change; | |
| u8 sysctl_tcp_syn_linear_timeouts; | |
| #ifdef CONFIG_NET_L3_MASTER_DEV | |
| u8 sysctl_udp_l3mdev_accept; | |
| #endif | |
| u8 sysctl_igmp_llm_reports; | |
| int sysctl_igmp_max_memberships; | |
| int sysctl_igmp_max_msf; | |
| int sysctl_igmp_qrv; | |
| struct ping_group_range ping_group_range; | |
| atomic_t dev_addr_genid; | |
| unsigned int sysctl_udp_child_hash_entries; | |
| #ifdef CONFIG_SYSCTL | |
| unsigned long *sysctl_local_reserved_ports; | |
| int sysctl_ip_prot_sock; | |
| #endif | |
| #ifdef CONFIG_IP_MROUTE | |
| #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES | |
| struct mr_table *mrt; | |
| #else | |
| struct list_head mr_tables; | |
| struct fib_rules_ops *mr_rules_ops; | |
| #endif | |
| #endif | |
| #ifdef CONFIG_IP_ROUTE_MULTIPATH | |
| u32 sysctl_fib_multipath_hash_fields; | |
| u8 sysctl_fib_multipath_use_neigh; | |
| u8 sysctl_fib_multipath_hash_policy; | |
| #endif | |
| struct fib_notifier_ops *notifier_ops; | |
| unsigned int fib_seq; /* protected by rtnl_mutex */ | |
| struct fib_notifier_ops *ipmr_notifier_ops; | |
| unsigned int ipmr_seq; /* protected by rtnl_mutex */ | |
| atomic_t rt_genid; | |
| siphash_key_t ip_id_key; | |
| }; | |
| #endif |