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netns_ipv4_sysctl.rst
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linux-6.19.14/Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst
1.. SPDX-License-Identifier: GPL-2.0 2.. Copyright (C) 2023 Google LLC 3 4=========================================== 5netns_ipv4 struct fast path usage breakdown 6=========================================== 7 8=============================== ============================================ =================== =================== ================================================= 9Type Name fastpath_tx_access fastpath_rx_access comment 10=============================== ============================================ =================== =================== ================================================= 11struct_inet_timewait_death_row tcp_death_row 12struct_udp_table* udp_table 13struct_ctl_table_header* forw_hdr 14struct_ctl_table_header* frags_hdr 15struct_ctl_table_header* ipv4_hdr 16struct_ctl_table_header* route_hdr 17struct_ctl_table_header* xfrm4_hdr 18struct_ipv4_devconf* devconf_all 19struct_ipv4_devconf* devconf_dflt 20struct_ip_ra_chain ra_chain 21struct_mutex ra_mutex 22struct_fib_rules_ops* rules_ops 23struct_fib_table fib_main 24struct_fib_table fib_default 25unsigned_int fib_rules_require_fldissect 26bool fib_has_custom_rules 27bool fib_has_custom_local_routes 28bool fib_offload_disabled 29atomic_t fib_num_tclassid_users 30struct_hlist_head* fib_table_hash 31struct_sock* fibnl 32struct_sock* mc_autojoin_sk 33struct_inet_peer_base* peers 34struct_fqdir* fqdir 35u8 sysctl_icmp_echo_ignore_all 36u8 sysctl_icmp_echo_enable_probe 37u8 sysctl_icmp_echo_ignore_broadcasts 38u8 sysctl_icmp_ignore_bogus_error_responses 39u8 sysctl_icmp_errors_use_inbound_ifaddr 40int sysctl_icmp_ratelimit 41int sysctl_icmp_ratemask 42u32 ip_rt_min_pmtu 43int ip_rt_mtu_expires 44int ip_rt_min_advmss 45struct_local_ports ip_local_ports 46u8 sysctl_tcp_ecn 47u8 sysctl_tcp_ecn_fallback 48u8 sysctl_ip_default_ttl ip4_dst_hoplimit/ip_select_ttl 49u8 sysctl_ip_no_pmtu_disc 50u8 sysctl_ip_fwd_use_pmtu read_mostly ip_dst_mtu_maybe_forward/ip_skb_dst_mtu 51u8 sysctl_ip_fwd_update_priority ip_forward 52u8 sysctl_ip_nonlocal_bind 53u8 sysctl_ip_autobind_reuse 54u8 sysctl_ip_dynaddr 55u8 sysctl_ip_early_demux read_mostly ip(6)_rcv_finish_core 56u8 sysctl_raw_l3mdev_accept 57u8 sysctl_tcp_early_demux read_mostly ip(6)_rcv_finish_core 58u8 sysctl_udp_early_demux 59u8 sysctl_nexthop_compat_mode 60u8 sysctl_fwmark_reflect 61u8 sysctl_tcp_fwmark_accept 62u8 sysctl_tcp_l3mdev_accept read_mostly __inet6_lookup_established/inet_request_bound_dev_if 63u8 sysctl_tcp_mtu_probing 64int sysctl_tcp_mtu_probe_floor 65int sysctl_tcp_base_mss 66int sysctl_tcp_min_snd_mss read_mostly __tcp_mtu_to_mss(tcp_write_xmit) 67int sysctl_tcp_probe_threshold tcp_mtu_probe(tcp_write_xmit) 68u32 sysctl_tcp_probe_interval tcp_mtu_check_reprobe(tcp_write_xmit) 69int sysctl_tcp_keepalive_time 70int sysctl_tcp_keepalive_intvl 71u8 sysctl_tcp_keepalive_probes 72u8 sysctl_tcp_syn_retries 73u8 sysctl_tcp_synack_retries 74u8 sysctl_tcp_syncookies generated_on_syn 75u8 sysctl_tcp_migrate_req reuseport 76u8 sysctl_tcp_comp_sack_nr __tcp_ack_snd_check 77int sysctl_tcp_reordering read_mostly tcp_may_raise_cwnd/tcp_cong_control 78u8 sysctl_tcp_retries1 79u8 sysctl_tcp_retries2 80u8 sysctl_tcp_orphan_retries 81u8 sysctl_tcp_tw_reuse timewait_sock_ops 82unsigned_int sysctl_tcp_tw_reuse_delay timewait_sock_ops 83int sysctl_tcp_fin_timeout TCP_LAST_ACK/tcp_rcv_state_process 84unsigned_int sysctl_tcp_notsent_lowat read_mostly tcp_notsent_lowat/tcp_stream_memory_free 85u8 sysctl_tcp_sack tcp_syn_options 86u8 sysctl_tcp_window_scaling tcp_syn_options,tcp_parse_options 87u8 sysctl_tcp_timestamps 88u8 sysctl_tcp_early_retrans read_mostly tcp_schedule_loss_probe(tcp_write_xmit) 89u32 sysctl_tcp_rto_max_ms 90u8 sysctl_tcp_recovery tcp_fastretrans_alert 91u8 sysctl_tcp_thin_linear_timeouts tcp_retrans_timer(on_thin_streams) 92u8 sysctl_tcp_slow_start_after_idle unlikely(tcp_cwnd_validate-network-not-starved) 93u8 sysctl_tcp_retrans_collapse 94u8 sysctl_tcp_stdurg unlikely(tcp_check_urg) 95u8 sysctl_tcp_rfc1337 96u8 sysctl_tcp_abort_on_overflow 97u8 sysctl_tcp_fack 98int sysctl_tcp_max_reordering tcp_check_sack_reordering 99int sysctl_tcp_adv_win_scale tcp_init_buffer_space 100u8 sysctl_tcp_dsack partial_packet_or_retrans_in_tcp_data_queue 101u8 sysctl_tcp_app_win tcp_win_from_space 102u8 sysctl_tcp_frto tcp_enter_loss 103u8 sysctl_tcp_nometrics_save TCP_LAST_ACK/tcp_update_metrics 104u8 sysctl_tcp_no_ssthresh_metrics_save TCP_LAST_ACK/tcp_(update/init)_metrics 105u8 sysctl_tcp_moderate_rcvbuf read_mostly tcp_rcvbuf_grow() 106u32 sysctl_tcp_rcvbuf_low_rtt read_mostly tcp_rcvbuf_grow() 107u8 sysctl_tcp_tso_win_divisor read_mostly tcp_tso_should_defer(tcp_write_xmit) 108u8 sysctl_tcp_workaround_signed_windows tcp_select_window 109int sysctl_tcp_limit_output_bytes read_mostly tcp_small_queue_check(tcp_write_xmit) 110int sysctl_tcp_challenge_ack_limit 111int sysctl_tcp_min_rtt_wlen read_mostly tcp_ack_update_rtt 112u8 sysctl_tcp_min_tso_segs unlikely(icsk_ca_ops-written) 113u8 sysctl_tcp_tso_rtt_log read_mostly tcp_tso_autosize 114u8 sysctl_tcp_autocorking read_mostly tcp_push/tcp_should_autocork 115u8 sysctl_tcp_reflect_tos tcp_v(4/6)_send_synack 116int sysctl_tcp_invalid_ratelimit 117int sysctl_tcp_pacing_ss_ratio default_cong_cont(tcp_update_pacing_rate) 118int sysctl_tcp_pacing_ca_ratio default_cong_cont(tcp_update_pacing_rate) 119int sysctl_tcp_wmem[3] read_mostly tcp_wmem_schedule(sendmsg/sendpage) 120int sysctl_tcp_rmem[3] read_mostly __tcp_grow_window(tx),tcp_rcv_space_adjust(rx) 121unsigned_int sysctl_tcp_child_ehash_entries 122unsigned_long sysctl_tcp_comp_sack_delay_ns __tcp_ack_snd_check 123unsigned_long sysctl_tcp_comp_sack_slack_ns __tcp_ack_snd_check 124int sysctl_max_syn_backlog 125int sysctl_tcp_fastopen 126struct_tcp_congestion_ops tcp_congestion_control init_cc 127struct_tcp_fastopen_context tcp_fastopen_ctx 128unsigned_int sysctl_tcp_fastopen_blackhole_timeout 129atomic_t tfo_active_disable_times 130unsigned_long tfo_active_disable_stamp 131u32 tcp_challenge_timestamp 132u32 tcp_challenge_count 133u8 sysctl_tcp_plb_enabled 134u8 sysctl_tcp_plb_idle_rehash_rounds 135u8 sysctl_tcp_plb_rehash_rounds 136u8 sysctl_tcp_plb_suspend_rto_sec 137int sysctl_tcp_plb_cong_thresh 138int sysctl_udp_wmem_min 139int sysctl_udp_rmem_min 140u8 sysctl_fib_notify_on_flag_change 141u8 sysctl_udp_l3mdev_accept 142u8 sysctl_igmp_llm_reports 143int sysctl_igmp_max_memberships 144int sysctl_igmp_max_msf 145int sysctl_igmp_qrv 146struct_ping_group_range ping_group_range 147atomic_t dev_addr_genid 148unsigned_int sysctl_udp_child_hash_entries 149unsigned_long* sysctl_local_reserved_ports 150int sysctl_ip_prot_sock 151struct_mr_table* mrt 152struct_list_head mr_tables 153struct_fib_rules_ops* mr_rules_ops 154u32 sysctl_fib_multipath_hash_fields 155u8 sysctl_fib_multipath_use_neigh 156u8 sysctl_fib_multipath_hash_policy 157struct_fib_notifier_ops* notifier_ops 158unsigned_int fib_seq 159struct_fib_notifier_ops* ipmr_notifier_ops 160unsigned_int ipmr_seq 161atomic_t rt_genid 162siphash_key_t ip_id_key 163=============================== ============================================ =================== =================== =================================================
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