Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158

.. SPDX-License-Identifier: GPL-2.0
.. Copyright (C) 2023 Google LLC

===========================================
netns_ipv4 struct fast path usage breakdown
===========================================

Type                            Name                                         fastpath_tx_access  fastpath_rx_access  comment
..struct                        ..netns_ipv4                                                                         
struct_inet_timewait_death_row  tcp_death_row                                                                        
struct_udp_table*               udp_table                                                                            
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                                                                            
struct_ipv4_devconf*            devconf_all                                                                          
struct_ipv4_devconf*            devconf_dflt                                                                         
struct_ip_ra_chain              ra_chain                                                                             
struct_mutex                    ra_mutex                                                                             
struct_fib_rules_ops*           rules_ops                                                                            
struct_fib_table                fib_main                                                                             
struct_fib_table                fib_default                                                                          
unsigned_int                    fib_rules_require_fldissect                                                          
bool                            fib_has_custom_rules                                                                 
bool                            fib_has_custom_local_routes                                                          
bool                            fib_offload_disabled                                                                 
atomic_t                        fib_num_tclassid_users                                                               
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                                                                 
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                        -                   -                   ip4_dst_hoplimit/ip_select_ttl
u8                              sysctl_ip_no_pmtu_disc                       -                   -                   
u8                              sysctl_ip_fwd_use_pmtu                       read_mostly         -                   ip_dst_mtu_maybe_forward/ip_skb_dst_mtu
u8                              sysctl_ip_fwd_update_priority                -                   -                   ip_forward
u8                              sysctl_ip_nonlocal_bind                      -                   -                   
u8                              sysctl_ip_autobind_reuse                     -                   -                   
u8                              sysctl_ip_dynaddr                            -                   -                   
u8                              sysctl_ip_early_demux                        -                   read_mostly         ip(6)_rcv_finish_core
u8                              sysctl_raw_l3mdev_accept                     -                   -                   
u8                              sysctl_tcp_early_demux                       -                   read_mostly         ip(6)_rcv_finish_core
u8                              sysctl_udp_early_demux                                                               
u8                              sysctl_nexthop_compat_mode                   -                   -                   
u8                              sysctl_fwmark_reflect                        -                   -                   
u8                              sysctl_tcp_fwmark_accept                     -                   -                   
u8                              sysctl_tcp_l3mdev_accept                     -                   -                   
u8                              sysctl_tcp_mtu_probing                       -                   -                   
int                             sysctl_tcp_mtu_probe_floor                   -                   -                   
int                             sysctl_tcp_base_mss                          -                   -                   
int                             sysctl_tcp_min_snd_mss                       read_mostly         -                   __tcp_mtu_to_mss(tcp_write_xmit)
int                             sysctl_tcp_probe_threshold                   -                   -                   tcp_mtu_probe(tcp_write_xmit)
u32                             sysctl_tcp_probe_interval                    -                   -                   tcp_mtu_check_reprobe(tcp_write_xmit)
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                        -                   -                   generated_on_syn
u8                              sysctl_tcp_migrate_req                       -                   -                   reuseport
u8                              sysctl_tcp_comp_sack_nr                      -                   -                   __tcp_ack_snd_check
int                             sysctl_tcp_reordering                        -                   read_mostly         tcp_may_raise_cwnd/tcp_cong_control
u8                              sysctl_tcp_retries1                          -                   -                   
u8                              sysctl_tcp_retries2                          -                   -                   
u8                              sysctl_tcp_orphan_retries                    -                   -                   
u8                              sysctl_tcp_tw_reuse                          -                   -                   timewait_sock_ops
int                             sysctl_tcp_fin_timeout                       -                   -                   TCP_LAST_ACK/tcp_rcv_state_process
unsigned_int                    sysctl_tcp_notsent_lowat                     read_mostly         -                   tcp_notsent_lowat/tcp_stream_memory_free
u8                              sysctl_tcp_sack                              -                   -                   tcp_syn_options
u8                              sysctl_tcp_window_scaling                    -                   -                   tcp_syn_options,tcp_parse_options
u8                              sysctl_tcp_timestamps                                                                
u8                              sysctl_tcp_early_retrans                     read_mostly         -                   tcp_schedule_loss_probe(tcp_write_xmit)
u8                              sysctl_tcp_recovery                          -                   -                   tcp_fastretrans_alert
u8                              sysctl_tcp_thin_linear_timeouts              -                   -                   tcp_retrans_timer(on_thin_streams)
u8                              sysctl_tcp_slow_start_after_idle             -                   -                   unlikely(tcp_cwnd_validate-network-not-starved)
u8                              sysctl_tcp_retrans_collapse                  -                   -                   
u8                              sysctl_tcp_stdurg                            -                   -                   unlikely(tcp_check_urg)
u8                              sysctl_tcp_rfc1337                           -                   -                   
u8                              sysctl_tcp_abort_on_overflow                 -                   -                   
u8                              sysctl_tcp_fack                              -                   -                   
int                             sysctl_tcp_max_reordering                    -                   -                   tcp_check_sack_reordering
int                             sysctl_tcp_adv_win_scale                     -                   -                   tcp_init_buffer_space
u8                              sysctl_tcp_dsack                             -                   -                   partial_packet_or_retrans_in_tcp_data_queue
u8                              sysctl_tcp_app_win                           -                   -                   tcp_win_from_space
u8                              sysctl_tcp_frto                              -                   -                   tcp_enter_loss
u8                              sysctl_tcp_nometrics_save                    -                   -                   TCP_LAST_ACK/tcp_update_metrics
u8                              sysctl_tcp_no_ssthresh_metrics_save          -                   -                   TCP_LAST_ACK/tcp_(update/init)_metrics
u8                              sysctl_tcp_moderate_rcvbuf                   read_mostly         read_mostly         tcp_tso_should_defer(tx);tcp_rcv_space_adjust(rx)
u8                              sysctl_tcp_tso_win_divisor                   read_mostly         -                   tcp_tso_should_defer(tcp_write_xmit)
u8                              sysctl_tcp_workaround_signed_windows         -                   -                   tcp_select_window
int                             sysctl_tcp_limit_output_bytes                read_mostly         -                   tcp_small_queue_check(tcp_write_xmit)
int                             sysctl_tcp_challenge_ack_limit               -                   -                   
int                             sysctl_tcp_min_rtt_wlen                      read_mostly         -                   tcp_ack_update_rtt
u8                              sysctl_tcp_min_tso_segs                      -                   -                   unlikely(icsk_ca_ops-written)
u8                              sysctl_tcp_tso_rtt_log                       read_mostly         -                   tcp_tso_autosize
u8                              sysctl_tcp_autocorking                       read_mostly         -                   tcp_push/tcp_should_autocork
u8                              sysctl_tcp_reflect_tos                       -                   -                   tcp_v(4/6)_send_synack
int                             sysctl_tcp_invalid_ratelimit                 -                   -                   
int                             sysctl_tcp_pacing_ss_ratio                   -                   -                   default_cong_cont(tcp_update_pacing_rate)
int                             sysctl_tcp_pacing_ca_ratio                   -                   -                   default_cong_cont(tcp_update_pacing_rate)
int                             sysctl_tcp_wmem[3]                           read_mostly         -                   tcp_wmem_schedule(sendmsg/sendpage)
int                             sysctl_tcp_rmem[3]                           -                   read_mostly         __tcp_grow_window(tx),tcp_rcv_space_adjust(rx)
unsigned_int                    sysctl_tcp_child_ehash_entries                                                       
unsigned_long                   sysctl_tcp_comp_sack_delay_ns                -                   -                   __tcp_ack_snd_check
unsigned_long                   sysctl_tcp_comp_sack_slack_ns                -                   -                   __tcp_ack_snd_check
int                             sysctl_max_syn_backlog                       -                   -                   
int                             sysctl_tcp_fastopen                          -                   -                   
struct_tcp_congestion_ops       tcp_congestion_control                       -                   -                   init_cc
struct_tcp_fastopen_context     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_udp_l3mdev_accept                                                             
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                                                        
unsigned_long*                  sysctl_local_reserved_ports                                                          
int                             sysctl_ip_prot_sock                                                                  
struct_mr_table*                mrt                                                                                  
struct_list_head                mr_tables                                                                            
struct_fib_rules_ops*           mr_rules_ops                                                                         
u32                             sysctl_fib_multipath_hash_fields                                                     
u8                              sysctl_fib_multipath_use_neigh                                                       
u8                              sysctl_fib_multipath_hash_policy                                                     
struct_fib_notifier_ops*        notifier_ops                                                                         
unsigned_int                    fib_seq                                                                              
struct_fib_notifier_ops*        ipmr_notifier_ops                                                                    
unsigned_int                    ipmr_seq                                                                             
atomic_t                        rt_genid                                                                             
siphash_key_t                   ip_id_key