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Message-ID: <20231017014716.3944813-2-lixiaoyan@google.com> Date: Tue, 17 Oct 2023 01:47:12 +0000 From: Coco Li <lixiaoyan@...gle.com> To: Jakub Kicinski <kuba@...nel.org>, Eric Dumazet <edumazet@...gle.com>, Neal Cardwell <ncardwell@...gle.com>, Mubashir Adnan Qureshi <mubashirq@...gle.com>, Paolo Abeni <pabeni@...hat.com> Cc: netdev@...r.kernel.org, Chao Wu <wwchao@...gle.com>, Wei Wang <weiwan@...gle.com>, Coco Li <lixiaoyan@...gle.com> Subject: [PATCH v2 net-next 1/5] Documentations: Analyze heavily used Networking related structs Analyzed a few structs in the networking stack by looking at variables within them that are used in the TCP/IP fast path. Fast path is defined as TCP path where data is transferred from sender to receiver unidirectionaly. It doesn't include phases other than TCP_ESTABLISHED, nor does it look at error paths. We hope to re-organizing variables that span many cachelines whose fast path variables are also spread out, and this document can help future developers keep networking fast path cachelines small. Optimized_cacheline field is computed as (Fastpath_Bytes/L3_cacheline_size_x86), and not the actual organized results (see patches to come for these). Note that the optimization is not cache line size dependent, we use x86 as an example of improvements. Investigation is done on 6.5 Name Struct_Cachelines Cur_fastpath_cache Fastpath_Bytes Optimized_cacheline tcp_sock 42 (2664 Bytes) 12 396 8 net_device 39 (2240 bytes) 12 234 4 inet_sock 15 (960 bytes) 14 922 14 Inet_connection_sock 22 (1368 bytes) 18 1166 18 Netns_ipv4 (sysctls) 12 (768 bytes) 4 77 2 linux_mib 16 (1060) 6 104 2 Note how there isn't much improvement space for inet_sock and Inet_connection_sock because sk and icsk_inet respective take up so much of the struct that rest of the variables become a small portion of the struct size. So, we decided to reorganize tcp_sock, net_device, Netns_ipv4, linux_mib Signed-off-by: Coco Li <lixiaoyan@...gle.com> Suggested-by: Eric Dumazet <edumazet@...gle.com> --- .../net_cachelines/inet_connection_sock.rst | 42 +++++ .../networking/net_cachelines/inet_sock.rst | 37 ++++ .../networking/net_cachelines/net_device.rst | 167 ++++++++++++++++++ .../net_cachelines/netns_ipv4_sysctl.rst | 151 ++++++++++++++++ .../networking/net_cachelines/snmp.rst | 128 ++++++++++++++ .../networking/net_cachelines/tcp_sock.rst | 148 ++++++++++++++++ 6 files changed, 673 insertions(+) create mode 100644 Documentation/networking/net_cachelines/inet_connection_sock.rst create mode 100644 Documentation/networking/net_cachelines/inet_sock.rst create mode 100644 Documentation/networking/net_cachelines/net_device.rst create mode 100644 Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst create mode 100644 Documentation/networking/net_cachelines/snmp.rst create mode 100644 Documentation/networking/net_cachelines/tcp_sock.rst diff --git a/Documentation/networking/net_cachelines/inet_connection_sock.rst b/Documentation/networking/net_cachelines/inet_connection_sock.rst new file mode 100644 index 0000000000000..121c706393733 --- /dev/null +++ b/Documentation/networking/net_cachelines/inet_connection_sock.rst @@ -0,0 +1,42 @@ +..struct inet_connection_sock fastpath_tx_access fastpath_rx_access comment +struct_inet_sock icsk_inet read_mostly read_mostly tcp_init_buffer_space,tcp_init_transfer,tcp_finish_connect,tcp_connect,tcp_send_rcvq,tcp_send_syn_data +struct_request_sock_queue icsk_accept_queue - - +struct_inet_bind_bucket icsk_bind_hash read_mostly - tcp_set_state +struct_inet_bind2_bucket icsk_bind2_hash read_mostly - tcp_set_state,inet_put_port +unsigned_long icsk_timeout read_mostly - inet_csk_reset_xmit_timer,tcp_connect +struct_timer_list icsk_retransmit_timer read_mostly - inet_csk_reset_xmit_timer,tcp_connect +struct_timer_list icsk_delack_timer read_mostly - inet_csk_reset_xmit_timer,tcp_connect +u32 icsk_rto read_write - tcp_cwnd_validate,tcp_schedule_loss_probe,tcp_connect_init,tcp_connect,tcp_write_xmit,tcp_push_one +u32 icsk_rto_min - - +u32 icsk_delack_max - - +u32 icsk_pmtu_cookie read_write - tcp_sync_mss,tcp_current_mss,tcp_send_syn_data,tcp_connect_init,tcp_connect +struct_tcp_congestion_ops icsk_ca_ops read_write - tcp_cwnd_validate,tcp_tso_segs,tcp_ca_dst_init,tcp_connect_init,tcp_connect,tcp_write_xmit +struct_inet_connection_sock_af_ops icsk_af_ops read_mostly - tcp_finish_connect,tcp_send_syn_data,tcp_mtup_init,tcp_mtu_check_reprobe,tcp_mtu_probe,tcp_connect_init,tcp_connect,__tcp_transmit_skb +struct_tcp_ulp_ops* icsk_ulp_ops - - +void* icsk_ulp_data - - +u8:5 icsk_ca_state read_write - tcp_cwnd_application_limited,tcp_set_ca_state,tcp_enter_cwr,tcp_tso_should_defer,tcp_mtu_probe,tcp_schedule_loss_probe,tcp_write_xmit,__tcp_transmit_skb +u8:1 icsk_ca_initialized read_write - tcp_init_transfer,tcp_init_congestion_control,tcp_init_transfer,tcp_finish_connect,tcp_connect +u8:1 icsk_ca_setsockopt - - +u8:1 icsk_ca_dst_locked write_mostly - tcp_ca_dst_init,tcp_connect_init,tcp_connect +u8 icsk_retransmits write_mostly - tcp_connect_init,tcp_connect +u8 icsk_pending read_write - inet_csk_reset_xmit_timer,tcp_connect,tcp_check_probe_timer,__tcp_push_pending_frames,tcp_rearm_rto,tcp_event_new_data_sent,tcp_event_new_data_sent +u8 icsk_backoff write_mostly - tcp_write_queue_purge,tcp_connect_init +u8 icsk_syn_retries - - +u8 icsk_probes_out - - +u16 icsk_ext_hdr_len read_mostly - __tcp_mtu_to_mss,tcp_mtu_to_rss,tcp_mtu_probe,tcp_write_xmit,tcp_mtu_to_mss, +struct_icsk_ack_u8 pending read_write read_write inet_csk_ack_scheduled,__tcp_cleanup_rbuf,tcp_cleanup_rbuf,inet_csk_clear_xmit_timer,tcp_event_ack-sent,inet_csk_reset_xmit_timer +struct_icsk_ack_u8 quick read_write write_mostly tcp_dec_quickack_mode,tcp_event_ack_sent,__tcp_transmit_skb,__tcp_select_window,__tcp_cleanup_rbuf +struct_icsk_ack_u8 pingpong - - +struct_icsk_ack_u8 retry write_mostly read_write inet_csk_clear_xmit_timer,tcp_rearm_rto,tcp_event_new_data_sent,tcp_write_xmit,__tcp_send_ack,tcp_send_ack, +struct_icsk_ack_u8 ato read_mostly write_mostly tcp_dec_quickack_mode,tcp_event_ack_sent,__tcp_transmit_skb,__tcp_send_ack,tcp_send_ack +struct_icsk_ack_unsigned_long timeout read_write read_write inet_csk_reset_xmit_timer,tcp_connect +struct_icsk_ack_u32 lrcvtime read_write - tcp_finish_connect,tcp_connect,tcp_event_data_sent,__tcp_transmit_skb +struct_icsk_ack_u16 rcv_mss write_mostly read_mostly __tcp_select_window,__tcp_cleanup_rbuf,tcp_initialize_rcv_mss,tcp_connect_init +struct_icsk_mtup_int search_high read_write - tcp_mtup_init,tcp_sync_mss,tcp_connect_init,tcp_mtu_check_reprobe,tcp_write_xmit +struct_icsk_mtup_int search_low read_write - tcp_mtu_probe,tcp_mtu_check_reprobe,tcp_write_xmit,tcp_sync_mss,tcp_connect_init,tcp_mtup_init +struct_icsk_mtup_u32:31 probe_size read_write - tcp_mtup_init,tcp_connect_init,__tcp_transmit_skb +struct_icsk_mtup_u32:1 enabled read_write - tcp_mtup_init,tcp_sync_mss,tcp_connect_init,tcp_mtu_probe,tcp_write_xmit +struct_icsk_mtup_u32 probe_timestamp read_write - tcp_mtup_init,tcp_connect_init,tcp_mtu_check_reprobe,tcp_mtu_probe +u32 icsk_probes_tstamp - - +u32 icsk_user_timeout - - +u64[104/sizeof(u64)] icsk_ca_priv - - diff --git a/Documentation/networking/net_cachelines/inet_sock.rst b/Documentation/networking/net_cachelines/inet_sock.rst new file mode 100644 index 0000000000000..7d5d645c1d3ae --- /dev/null +++ b/Documentation/networking/net_cachelines/inet_sock.rst @@ -0,0 +1,37 @@ +Type Name fastpath_tx_access fastpath_rx_access comment +..struct inet_sock +struct_sock sk read_mostly read_mostly tcp_init_buffer_space,tcp_init_transfer,tcp_finish_connect,tcp_connect,tcp_send_rcvq,tcp_send_syn_data +struct_ipv6_pinfo* pinet6 - - +be16 inet_sport read_mostly - __tcp_transmit_skb +be32 inet_daddr read_mostly - ip_select_ident_segs +be32 inet_rcv_saddr - - +be16 inet_dport read_mostly - __tcp_transmit_skb +u16 inet_num - - +be32 inet_saddr - - +s16 uc_ttl read_mostly - __ip_queue_xmit/ip_select_ttl +u16 cmsg_flags - - +struct_ip_options_rcu* inet_opt read_mostly - __ip_queue_xmit +u16 inet_id read_mostly - ip_select_ident_segs +u8 tos read_mostly - ip_queue_xmit +u8 min_ttl - - +u8 mc_ttl - - +u8 pmtudisc - - +u8:1 recverr - - +u8:1 is_icsk - - +u8:1 freebind - - +u8:1 hdrincl - - +u8:1 mc_loop - - +u8:1 transparent - - +u8:1 mc_all - - +u8:1 nodefrag - - +u8:1 bind_address_no_port - - +u8:1 recverr_rfc4884 - - +u8:1 defer_connect read_mostly - tcp_sendmsg_fastopen +u8 rcv_tos - - +u8 convert_csum - - +int uc_index - - +int mc_index - - +be32 mc_addr - - +struct_ip_mc_socklist* mc_list - - +struct_inet_cork_full cork read_mostly - __tcp_transmit_skb +struct local_port_range - - diff --git a/Documentation/networking/net_cachelines/net_device.rst b/Documentation/networking/net_cachelines/net_device.rst new file mode 100644 index 0000000000000..b6c85300be914 --- /dev/null +++ b/Documentation/networking/net_cachelines/net_device.rst @@ -0,0 +1,167 @@ +Type Name fastpath_tx_access fastpath_rx_access Comments +..struct ..net_device +char name[16] - - +struct_netdev_name_node* name_node +struct_dev_ifalias* ifalias +unsigned_long mem_end +unsigned_long mem_start +unsigned_long base_addr +unsigned_long state +struct_list_head dev_list +struct_list_head napi_list +struct_list_head unreg_list +struct_list_head close_list +struct_list_head ptype_all read_mostly - dev_nit_active(tx) +struct_list_head ptype_specific read_mostly deliver_ptype_list_skb/__netif_receive_skb_core(rx) +struct adj_list +unsigned_int flags read_mostly read_mostly __dev_queue_xmit,__dev_xmit_skb,ip6_output,__ip6_finish_output(tx);ip6_rcv_core(rx) +xdp_features_t xdp_features +unsigned_long_long priv_flags read_mostly - __dev_queue_xmit(tx) +struct_net_device_ops* netdev_ops read_mostly - netdev_core_pick_tx,netdev_start_xmit(tx) +struct_xdp_metadata_ops* xdp_metadata_ops +int ifindex - read_mostly ip6_rcv_core +unsigned_short gflags +unsigned_short hard_header_len read_mostly read_mostly ip6_xmit(tx);gro_list_prepare(rx) +unsigned_int mtu read_mostly - ip_finish_output2 +unsigned_short needed_headroom read_mostly - LL_RESERVED_SPACE/ip_finish_output2 +unsigned_short needed_tailroom +netdev_features_t features read_mostly read_mostly HARD_TX_LOCK,netif_skb_features,sk_setup_caps(tx);netif_elide_gro(rx) +netdev_features_t hw_features +netdev_features_t wanted_features +netdev_features_t vlan_features +netdev_features_t hw_enc_features - - netif_skb_features +netdev_features_t mpls_features +netdev_features_t gso_partial_features +unsigned_int min_mtu +unsigned_int max_mtu +unsigned_short type +unsigned_char min_header_len +unsigned_char name_assign_type +int group +struct_net_device_stats stats +struct_net_device_core_stats* core_stats +atomic_t carrier_up_count +atomic_t carrier_down_count +struct_iw_handler_def* wireless_handlers +struct_iw_public_data* wireless_data +struct_ethtool_ops* ethtool_ops +struct_l3mdev_ops* l3mdev_ops +struct_ndisc_ops* ndisc_ops +struct_xfrmdev_ops* xfrmdev_ops +struct_tlsdev_ops* tlsdev_ops +struct_header_ops* header_ops read_mostly - ip_finish_output2,ip6_finish_output2(tx) +unsigned_char operstate +unsigned_char link_mode +unsigned_char if_port +unsigned_char dma +unsigned_char perm_addr[32] +unsigned_char addr_assign_type +unsigned_char addr_len +unsigned_char upper_level +unsigned_char lower_level +unsigned_short neigh_priv_len +unsigned_short padded +spinlock_t addr_list_lock +int irq +struct_netdev_hw_addr_list uc +struct_netdev_hw_addr_list mc +struct_netdev_hw_addr_list dev_addrs +struct_kset* queues_kset +struct_list_head unlink_list +unsigned_int promiscuity +unsigned_int allmulti +bool uc_promisc +unsigned_char nested_level +struct_in_device* ip_ptr read_mostly read_mostly __in_dev_get +struct_inet6_dev* ip6_ptr read_mostly read_mostly __in6_dev_get +struct_vlan_info* vlan_info +struct_dsa_port* dsa_ptr +struct_tipc_bearer* tipc_ptr +void* atalk_ptr +void* ax25_ptr +struct_wireless_dev* ieee80211_ptr +struct_wpan_dev* ieee802154_ptr +struct_mpls_dev* mpls_ptr +struct_mctp_dev* mctp_ptr +unsigned_char* dev_addr +struct_netdev_queue* _rx read_mostly - netdev_get_rx_queue(rx) +unsigned_int num_rx_queues +unsigned_int real_num_rx_queues - read_mostly get_rps_cpu +struct_bpf_prog* xdp_prog +unsigned_long gro_flush_timeout - read_mostly napi_complete_done +int napi_defer_hard_irqs - read_mostly napi_complete_done +unsigned_int gro_max_size - read_mostly skb_gro_receive +unsigned_int gro_ipv4_max_size - read_mostly skb_gro_receive +rx_handler_func_t* rx_handler read_mostly - __netif_receive_skb_core +void* rx_handler_data read_mostly - +struct_mini_Qdisc* miniq_ingress +struct_netdev_queue* ingress_queue read_mostly - +struct_nf_hook_entries* nf_hooks_ingress +unsigned_char broadcast[32] +struct_cpu_rmap* rx_cpu_rmap +struct_hlist_node index_hlist +struct_netdev_queue* _tx read_mostly - netdev_get_tx_queue(tx) +unsigned_int num_tx_queues - - +unsigned_int real_num_tx_queues read_mostly - skb_tx_hash,netdev_core_pick_tx(tx) +unsigned_int tx_queue_len +spinlock_t tx_global_lock +struct_xdp_dev_bulk_queue__percpu* xdp_bulkq +struct_xps_dev_maps* xps_maps[2] read_mostly - __netif_set_xps_queue +struct_mini_Qdisc* miniq_egress +struct_nf_hook_entries* nf_hooks_egress read_mostly - +struct_hlist_head qdisc_hash[16] +struct_timer_list watchdog_timer +int watchdog_timeo +u32 proto_down_reason +struct_list_head todo_list +int__percpu* pcpu_refcnt +refcount_t dev_refcnt +struct_ref_tracker_dir refcnt_tracker +struct_list_head link_watch_list +enum:8 reg_state +bool dismantle +enum:16 rtnl_link_state +bool needs_free_netdev +void*priv_destructor struct_net_device +struct_netpoll_info* npinfo - read_mostly napi_poll/napi_poll_lock +possible_net_t nd_net - read_mostly (dev_net)napi_busy_loop,tcp_v(4/6)_rcv,ip(v6)_rcv,ip(6)_input,ip(6)_input_finish +void* ml_priv +enum_netdev_ml_priv_type ml_priv_type +struct_pcpu_lstats__percpu* lstats +struct_pcpu_sw_netstats__percpu* tstats +struct_pcpu_dstats__percpu* dstats +struct_garp_port* garp_port +struct_mrp_port* mrp_port +struct_dm_hw_stat_delta* dm_private +struct_device dev - - +struct_attribute_group* sysfs_groups[4] +struct_attribute_group* sysfs_rx_queue_group +struct_rtnl_link_ops* rtnl_link_ops +unsigned_int gso_max_size read_mostly - sk_dst_gso_max_size +unsigned_int tso_max_size +u16 gso_max_segs read_mostly - gso_max_segs +u16 tso_max_segs +unsigned_int gso_ipv4_max_size read_mostly - sk_dst_gso_max_size +struct_dcbnl_rtnl_ops* dcbnl_ops +s16 num_tc read_mostly - skb_tx_hash +struct_netdev_tc_txq tc_to_txq[16] read_mostly - skb_tx_hash +u8 prio_tc_map[16] +unsigned_int fcoe_ddp_xid +struct_netprio_map* priomap +struct_phy_device* phydev +struct_sfp_bus* sfp_bus +struct_lock_class_key* qdisc_tx_busylock +bool proto_down +unsigned:1 wol_enabled +unsigned:1 threaded - - napi_poll(napi_enable,dev_set_threaded) +struct_list_head net_notifier_list +struct_macsec_ops* macsec_ops +struct_udp_tunnel_nic_info* udp_tunnel_nic_info +struct_udp_tunnel_nic* udp_tunnel_nic +struct_bpf_xdp_entity xdp_state[3] +u8 dev_addr_shadow[32] +netdevice_tracker linkwatch_dev_tracker +netdevice_tracker watchdog_dev_tracker +netdevice_tracker dev_registered_tracker +struct_rtnl_hw_stats64* offload_xstats_l3 +struct_devlink_port* devlink_port diff --git a/Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst b/Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst new file mode 100644 index 0000000000000..b51619422ce99 --- /dev/null +++ b/Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst @@ -0,0 +1,151 @@ +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 diff --git a/Documentation/networking/net_cachelines/snmp.rst b/Documentation/networking/net_cachelines/snmp.rst new file mode 100644 index 0000000000000..1918a91d45e55 --- /dev/null +++ b/Documentation/networking/net_cachelines/snmp.rst @@ -0,0 +1,128 @@ +Type Name fastpath_tx_access fastpath_rx_access comment +..Timer +unsigned_long LINUX_MIB_TCPKEEPALIVE write_mostly - tcp_keepalive_timer +unsigned_long LINUX_MIB_DELAYEDACKS write_mostly - tcp_delack_timer_handler,tcp_delack_timer +unsigned_long LINUX_MIB_DELAYEDACKLOCKED write_mostly - tcp_delack_timer_handler,tcp_delack_timer +unsigned_long LINUX_MIB_TCPAUTOCORKING write_mostly - tcp_push,tcp_sendmsg_locked +unsigned_long LINUX_MIB_TCPFROMZEROWINDOWADV write_mostly - tcp_select_window,tcp_transmit-skb +unsigned_long LINUX_MIB_TCPTOZEROWINDOWADV write_mostly - tcp_select_window,tcp_transmit-skb +unsigned_long LINUX_MIB_TCPWANTZEROWINDOWADV write_mostly - tcp_select_window,tcp_transmit-skb +unsigned_long LINUX_MIB_TCPORIGDATASENT write_mostly - tcp_write_xmit +unsigned_long LINUX_MIB_TCPHPHITS - write_mostly tcp_rcv_established,tcp_v4_do_rcv,tcp_v6_do_rcv +unsigned_long LINUX_MIB_TCPRCVCOALESCE - write_mostly tcp_try_coalesce,tcp_queue_rcv,tcp_rcv_established +unsigned_long LINUX_MIB_TCPPUREACKS - write_mostly tcp_ack,tcp_rcv_established +unsigned_long LINUX_MIB_TCPHPACKS - write_mostly tcp_ack,tcp_rcv_established +unsigned_long LINUX_MIB_TCPDELIVERED - write_mostly tcp_newly_delivered,tcp_ack,tcp_rcv_established +unsigned_long LINUX_MIB_SYNCOOKIESSENT +unsigned_long LINUX_MIB_SYNCOOKIESRECV +unsigned_long LINUX_MIB_SYNCOOKIESFAILED +unsigned_long LINUX_MIB_EMBRYONICRSTS +unsigned_long LINUX_MIB_PRUNECALLED +unsigned_long LINUX_MIB_RCVPRUNED +unsigned_long LINUX_MIB_OFOPRUNED +unsigned_long LINUX_MIB_OUTOFWINDOWICMPS +unsigned_long LINUX_MIB_LOCKDROPPEDICMPS +unsigned_long LINUX_MIB_ARPFILTER +unsigned_long LINUX_MIB_TIMEWAITED +unsigned_long LINUX_MIB_TIMEWAITRECYCLED +unsigned_long LINUX_MIB_TIMEWAITKILLED +unsigned_long LINUX_MIB_PAWSACTIVEREJECTED +unsigned_long LINUX_MIB_PAWSESTABREJECTED +unsigned_long LINUX_MIB_DELAYEDACKLOST +unsigned_long LINUX_MIB_LISTENOVERFLOWS +unsigned_long LINUX_MIB_LISTENDROPS +unsigned_long LINUX_MIB_TCPRENORECOVERY +unsigned_long LINUX_MIB_TCPSACKRECOVERY +unsigned_long LINUX_MIB_TCPSACKRENEGING +unsigned_long LINUX_MIB_TCPSACKREORDER +unsigned_long LINUX_MIB_TCPRENOREORDER +unsigned_long LINUX_MIB_TCPTSREORDER +unsigned_long LINUX_MIB_TCPFULLUNDO +unsigned_long LINUX_MIB_TCPPARTIALUNDO +unsigned_long LINUX_MIB_TCPDSACKUNDO +unsigned_long LINUX_MIB_TCPLOSSUNDO +unsigned_long LINUX_MIB_TCPLOSTRETRANSMIT +unsigned_long LINUX_MIB_TCPRENOFAILURES +unsigned_long LINUX_MIB_TCPSACKFAILURES +unsigned_long LINUX_MIB_TCPLOSSFAILURES +unsigned_long LINUX_MIB_TCPFASTRETRANS +unsigned_long LINUX_MIB_TCPSLOWSTARTRETRANS +unsigned_long LINUX_MIB_TCPTIMEOUTS +unsigned_long LINUX_MIB_TCPLOSSPROBES +unsigned_long LINUX_MIB_TCPLOSSPROBERECOVERY +unsigned_long LINUX_MIB_TCPRENORECOVERYFAIL +unsigned_long LINUX_MIB_TCPSACKRECOVERYFAIL +unsigned_long LINUX_MIB_TCPRCVCOLLAPSED +unsigned_long LINUX_MIB_TCPDSACKOLDSENT +unsigned_long LINUX_MIB_TCPDSACKOFOSENT +unsigned_long LINUX_MIB_TCPDSACKRECV +unsigned_long LINUX_MIB_TCPDSACKOFORECV +unsigned_long LINUX_MIB_TCPABORTONDATA +unsigned_long LINUX_MIB_TCPABORTONCLOSE +unsigned_long LINUX_MIB_TCPABORTONMEMORY +unsigned_long LINUX_MIB_TCPABORTONTIMEOUT +unsigned_long LINUX_MIB_TCPABORTONLINGER +unsigned_long LINUX_MIB_TCPABORTFAILED +unsigned_long LINUX_MIB_TCPMEMORYPRESSURES +unsigned_long LINUX_MIB_TCPMEMORYPRESSURESCHRONO +unsigned_long LINUX_MIB_TCPSACKDISCARD +unsigned_long LINUX_MIB_TCPDSACKIGNOREDOLD +unsigned_long LINUX_MIB_TCPDSACKIGNOREDNOUNDO +unsigned_long LINUX_MIB_TCPSPURIOUSRTOS +unsigned_long LINUX_MIB_TCPMD5NOTFOUND +unsigned_long LINUX_MIB_TCPMD5UNEXPECTED +unsigned_long LINUX_MIB_TCPMD5FAILURE +unsigned_long LINUX_MIB_SACKSHIFTED +unsigned_long LINUX_MIB_SACKMERGED +unsigned_long LINUX_MIB_SACKSHIFTFALLBACK +unsigned_long LINUX_MIB_TCPBACKLOGDROP +unsigned_long LINUX_MIB_PFMEMALLOCDROP +unsigned_long LINUX_MIB_TCPMINTTLDROP +unsigned_long LINUX_MIB_TCPDEFERACCEPTDROP +unsigned_long LINUX_MIB_IPRPFILTER +unsigned_long LINUX_MIB_TCPTIMEWAITOVERFLOW +unsigned_long LINUX_MIB_TCPREQQFULLDOCOOKIES +unsigned_long LINUX_MIB_TCPREQQFULLDROP +unsigned_long LINUX_MIB_TCPRETRANSFAIL +unsigned_long LINUX_MIB_TCPBACKLOGCOALESCE +unsigned_long LINUX_MIB_TCPOFOQUEUE +unsigned_long LINUX_MIB_TCPOFODROP +unsigned_long LINUX_MIB_TCPOFOMERGE +unsigned_long LINUX_MIB_TCPCHALLENGEACK +unsigned_long LINUX_MIB_TCPSYNCHALLENGE +unsigned_long LINUX_MIB_TCPFASTOPENACTIVE +unsigned_long LINUX_MIB_TCPFASTOPENACTIVEFAIL +unsigned_long LINUX_MIB_TCPFASTOPENPASSIVE +unsigned_long LINUX_MIB_TCPFASTOPENPASSIVEFAIL +unsigned_long LINUX_MIB_TCPFASTOPENLISTENOVERFLOW +unsigned_long LINUX_MIB_TCPFASTOPENCOOKIEREQD +unsigned_long LINUX_MIB_TCPFASTOPENBLACKHOLE +unsigned_long LINUX_MIB_TCPSPURIOUS_RTX_HOSTQUEUES +unsigned_long LINUX_MIB_BUSYPOLLRXPACKETS +unsigned_long LINUX_MIB_TCPSYNRETRANS +unsigned_long LINUX_MIB_TCPHYSTARTTRAINDETECT +unsigned_long LINUX_MIB_TCPHYSTARTTRAINCWND +unsigned_long LINUX_MIB_TCPHYSTARTDELAYDETECT +unsigned_long LINUX_MIB_TCPHYSTARTDELAYCWND +unsigned_long LINUX_MIB_TCPACKSKIPPEDSYNRECV +unsigned_long LINUX_MIB_TCPACKSKIPPEDPAWS +unsigned_long LINUX_MIB_TCPACKSKIPPEDSEQ +unsigned_long LINUX_MIB_TCPACKSKIPPEDFINWAIT2 +unsigned_long LINUX_MIB_TCPACKSKIPPEDTIMEWAIT +unsigned_long LINUX_MIB_TCPACKSKIPPEDCHALLENGE +unsigned_long LINUX_MIB_TCPWINPROBE +unsigned_long LINUX_MIB_TCPMTUPFAIL +unsigned_long LINUX_MIB_TCPMTUPSUCCESS +unsigned_long LINUX_MIB_TCPDELIVEREDCE +unsigned_long LINUX_MIB_TCPACKCOMPRESSED +unsigned_long LINUX_MIB_TCPZEROWINDOWDROP +unsigned_long LINUX_MIB_TCPRCVQDROP +unsigned_long LINUX_MIB_TCPWQUEUETOOBIG +unsigned_long LINUX_MIB_TCPFASTOPENPASSIVEALTKEY +unsigned_long LINUX_MIB_TCPTIMEOUTREHASH +unsigned_long LINUX_MIB_TCPDUPLICATEDATAREHASH +unsigned_long LINUX_MIB_TCPDSACKRECVSEGS +unsigned_long LINUX_MIB_TCPDSACKIGNOREDDUBIOUS +unsigned_long LINUX_MIB_TCPMIGRATEREQSUCCESS +unsigned_long LINUX_MIB_TCPMIGRATEREQFAILURE +unsigned_long __LINUX_MIB_MAX diff --git a/Documentation/networking/net_cachelines/tcp_sock.rst b/Documentation/networking/net_cachelines/tcp_sock.rst new file mode 100644 index 0000000000000..ff7c5e933fc35 --- /dev/null +++ b/Documentation/networking/net_cachelines/tcp_sock.rst @@ -0,0 +1,148 @@ +Type Name fastpath_tx_access fastpath_rx_access Comments +..struct tcp_sock +struct_inet_connection_sock inet_conn +u16 tcp_header_len read_mostly read_mostly tcp_bound_to_half_wnd,tcp_current_mss(tx);tcp_rcv_established(rx) +u16 gso_segs read_mostly - tcp_xmit_size_goal +__be32 pred_flags read_write read_mostly tcp_select_window(tx);tcp_rcv_established(rx) +u64 bytes_received - read_write tcp_rcv_nxt_update(rx) +u32 segs_in - read_write tcp_v6_rcv(rx) +u32 data_segs_in - read_write tcp_v6_rcv(rx) +u32 rcv_nxt read_mostly read_write tcp_cleanup_rbuf,tcp_send_ack,tcp_inq_hint,tcp_transmit_skb,tcp_receive_window(tx);tcp_v6_do_rcv,tcp_rcv_established,tcp_data_queue,tcp_receive_window,tcp_rcv_nxt_update(write)(rx) +u32 copied_seq - read_mostly tcp_cleanup_rbuf,tcp_rcv_space_adjust,tcp_inq_hint +u32 rcv_wup - read_write __tcp_cleanup_rbuf,tcp_receive_window,tcp_receive_established +u32 snd_nxt read_write read_mostly tcp_rate_check_app_limited,__tcp_transmit_skb,tcp_event_new_data_sent(write)(tx);tcp_rcv_established,tcp_ack,tcp_clean_rtx_queue(rx) +u32 segs_out read_write - __tcp_transmit_skb +u32 data_segs_out read_write - __tcp_transmit_skb,tcp_update_skb_after_send +u64 bytes_sent read_write - __tcp_transmit_skb +u64 bytes_acked - read_write tcp_snd_una_update/tcp_ack +u32 dsack_dups +u32 snd_una read_mostly read_write tcp_wnd_end,tcp_urg_mode,tcp_minshall_check,tcp_cwnd_validate(tx);tcp_ack,tcp_may_update_window,tcp_clean_rtx_queue(write),tcp_ack_tstamp(rx) +u32 snd_sml read_write - tcp_minshall_check,tcp_minshall_update +u32 rcv_tstamp - read_mostly tcp_ack +u32 lsndtime read_write - tcp_slow_start_after_idle_check,tcp_event_data_sent +u32 last_oow_ack_time +u32 compressed_ack_rcv_nxt +u32 tsoffset read_mostly read_mostly tcp_established_options(tx);tcp_fast_parse_options(rx) +struct_list_head tsq_node - - +struct_list_head tsorted_sent_queue read_write - tcp_update_skb_after_send +u32 snd_wl1 - read_mostly tcp_may_update_window +u32 snd_wnd read_mostly read_mostly tcp_wnd_end,tcp_tso_should_defer(tx);tcp_fast_path_on(rx) +u32 max_window read_mostly - tcp_bound_to_half_wnd,forced_push +u32 mss_cache read_mostly read_mostly tcp_rate_check_app_limited,tcp_current_mss,tcp_sync_mss,tcp_sndbuf_expand,tcp_tso_should_defer(tx);tcp_update_pacing_rate,tcp_clean_rtx_queue(rx) +u32 window_clamp read_mostly read_write tcp_rcv_space_adjust,__tcp_select_window +u32 rcv_ssthresh read_mostly - __tcp_select_window +struct tcp_rack +u16 advmss - read_mostly tcp_rcv_space_adjust +u8 compressed_ack +u8:2 dup_ack_counter +u8:1 tlp_retrans +u32 chrono_start read_write - tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) +u32[3] chrono_stat read_write - tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) +u8:2 chrono_type read_write - tcp_chrono_start/stop(tcp_write_xmit,tcp_cwnd_validate,tcp_send_syn_data) +u8:1 rate_app_limited - read_write tcp_rate_gen +u8:1 fastopen_connect +u8:1 fastopen_no_cookie +u8:1 is_sack_reneg - read_mostly tcp_skb_entail,tcp_ack +u8:2 fastopen_client_fail +u8:4 nonagle read_write - tcp_skb_entail,tcp_push_pending_frames +u8:1 thin_lto +u8:1 recvmsg_inq +u8:1 repair read_mostly - tcp_write_xmit +u8:1 frto +u8 repair_queue - - +u8:2 save_syn +u8:1 syn_data +u8:1 syn_fastopen +u8:1 syn_fastopen_exp +u8:1 syn_fastopen_ch +u8:1 syn_data_acked +u8:1 is_cwnd_limited read_mostly - tcp_cwnd_validate,tcp_is_cwnd_limited +u32 tlp_high_seq - read_mostly tcp_ack +u32 tcp_tx_delay +u64 tcp_wstamp_ns read_write - tcp_pacing_check,tcp_tso_should_defer,tcp_update_skb_after_send +u64 tcp_clock_cache read_write read_write tcp_mstamp_refresh(tcp_write_xmit/tcp_rcv_space_adjust),__tcp_transmit_skb,tcp_tso_should_defer;timer +u64 tcp_mstamp read_write read_write tcp_mstamp_refresh(tcp_write_xmit/tcp_rcv_space_adjust)(tx);tcp_rcv_space_adjust,tcp_rate_gen,tcp_clean_rtx_queue,tcp_ack_update_rtt/tcp_time_stamp(rx);timer +u32 srtt_us read_mostly read_write tcp_tso_should_defer(tx);tcp_update_pacing_rate,__tcp_set_rto,tcp_rtt_estimator(rx) +u32 mdev_us read_write - tcp_rtt_estimator +u32 mdev_max_us +u32 rttvar_us - read_mostly __tcp_set_rto +u32 rtt_seq read_write tcp_rtt_estimator +struct_minmax rtt_min - read_mostly tcp_min_rtt/tcp_rate_gen,tcp_min_rtttcp_update_rtt_min +u32 packets_out read_write read_write tcp_packets_in_flight(tx/rx);tcp_slow_start_after_idle_check,tcp_nagle_check,tcp_rate_skb_sent,tcp_event_new_data_sent,tcp_cwnd_validate,tcp_write_xmit(tx);tcp_ack,tcp_clean_rtx_queue,tcp_update_pacing_rate(rx) +u32 retrans_out - read_mostly tcp_packets_in_flight,tcp_rate_check_app_limited +u32 max_packets_out - read_write tcp_cwnd_validate +u32 cwnd_usage_seq - read_write tcp_cwnd_validate +u16 urg_data - read_mostly tcp_fast_path_check +u8 ecn_flags read_write - tcp_ecn_send +u8 keepalive_probes +u32 reordering read_mostly - tcp_sndbuf_expand +u32 reord_seen +u32 snd_up read_write read_mostly tcp_mark_urg,tcp_urg_mode,__tcp_transmit_skb(tx);tcp_clean_rtx_queue(rx) +struct_tcp_options_received rx_opt read_mostly read_write tcp_established_options(tx);tcp_fast_path_on,tcp_ack_update_window,tcp_is_sack,tcp_data_queue,tcp_rcv_established,tcp_ack_update_rtt(rx) +u32 snd_ssthresh - read_mostly tcp_update_pacing_rate +u32 snd_cwnd read_mostly read_mostly tcp_snd_cwnd,tcp_rate_check_app_limited,tcp_tso_should_defer(tx);tcp_update_pacing_rate +u32 snd_cwnd_cnt +u32 snd_cwnd_clamp +u32 snd_cwnd_used +u32 snd_cwnd_stamp +u32 prior_cwnd +u32 prr_delivered +u32 prr_out read_mostly read_mostly tcp_rate_skb_sent,tcp_newly_delivered(tx);tcp_ack,tcp_rate_gen,tcp_clean_rtx_queue(rx) +u32 delivered read_mostly read_write tcp_rate_skb_sent, tcp_newly_delivered(tx);tcp_ack, tcp_rate_gen, tcp_clean_rtx_queue (rx) +u32 delivered_ce read_mostly read_write tcp_rate_skb_sent(tx);tcp_rate_gen(rx) +u32 lost - read_mostly tcp_ack +u32 app_limited read_write read_mostly tcp_rate_check_app_limited,tcp_rate_skb_sent(tx);tcp_rate_gen(rx) +u64 first_tx_mstamp read_write - tcp_rate_skb_sent +u64 delivered_mstamp read_write - tcp_rate_skb_sent +u32 rate_delivered - read_mostly tcp_rate_gen +u32 rate_interval_us - read_mostly rate_delivered,rate_app_limited +u32 rcv_wnd read_write read_mostly tcp_select_window,tcp_receive_window,tcp_fast_path_check +u32 write_seq read_write - tcp_rate_check_app_limited,tcp_write_queue_empty,tcp_skb_entail,forced_push,tcp_mark_push +u32 notsent_lowat read_mostly - tcp_stream_memory_free +u32 pushed_seq read_write - tcp_mark_push,forced_push +u32 lost_out read_mostly read_mostly tcp_left_out(tx);tcp_packets_in_flight(tx/rx);tcp_rate_check_app_limited(rx) +u32 sacked_out read_mostly read_mostly tcp_left_out(tx);tcp_packets_in_flight(tx/rx);tcp_clean_rtx_queue(rx) +struct_hrtimer pacing_timer +struct_hrtimer compressed_ack_timer +struct_sk_buff* lost_skb_hint read_mostly tcp_clean_rtx_queue +struct_sk_buff* retransmit_skb_hint read_mostly - tcp_clean_rtx_queue +struct_rb_root out_of_order_queue - read_mostly tcp_data_queue,tcp_fast_path_check +struct_sk_buff* ooo_last_skb +struct_tcp_sack_block[1] duplicate_sack +struct_tcp_sack_block[4] selective_acks +struct_tcp_sack_block[4] recv_sack_cache +struct_sk_buff* highest_sack read_write - tcp_event_new_data_sent +int lost_cnt_hint +u32 prior_ssthresh +u32 high_seq +u32 retrans_stamp +u32 undo_marker +int undo_retrans +u64 bytes_retrans +u32 total_retrans +u32 rto_stamp +u16 total_rto +u16 total_rto_recoveries +u32 total_rto_time +u32 urg_seq - - +unsigned_int keepalive_time +unsigned_int keepalive_intvl +int linger2 +u8 bpf_sock_ops_cb_flags +u8:1 bpf_chg_cc_inprogress +u16 timeout_rehash +u32 rcv_ooopack +u32 rcv_rtt_last_tsecr +struct rcv_rtt_est - read_write tcp_rcv_space_adjust,tcp_rcv_established +struct rcvq_space - read_write tcp_rcv_space_adjust +struct mtu_probe +u32 plb_rehash +u32 mtu_info +bool is_mptcp +bool smc_hs_congested +bool syn_smc +struct_tcp_sock_af_ops* af_specific +struct_tcp_md5sig_info* md5sig_info +struct_tcp_fastopen_request* fastopen_req +struct_request_sock* fastopen_rsk +struct_saved_syn* saved_syn \ No newline at end of file -- 2.42.0.655.g421f12c284-goog
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