Documentation/networking/net_cachelines/tcp_sock.rst
Source file repositories/reference/linux-study-clean/Documentation/networking/net_cachelines/tcp_sock.rst
File Facts
- System
- Linux kernel
- Corpus path
Documentation/networking/net_cachelines/tcp_sock.rst- Extension
.rst- Size
- 16600 bytes
- Lines
- 173
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: documentation
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
.. SPDX-License-Identifier: GPL-2.0
.. Copyright (C) 2023 Google LLC
=========================================
tcp_sock struct fast path usage breakdown
=========================================
============================= ======================= =================== =================== ==================================================================================================================================================================================================================
Type Name fastpath_tx_access fastpath_rx_access Comments
============================= ======================= =================== =================== ==================================================================================================================================================================================================================
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 read_write tcp_segs_in(),tcp_v6_rcv(rx),tcp_v4_rcv()
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 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_write read_write tcp_ack
void * tcp_clean_acked 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
u8 scaling_ratio read_mostly read_mostly tcp_win_from_space
struct tcp_rack
u16 advmss read_mostly tcp_rcv_space_adjust
u8 compressed_ack
u8:2 dup_ack_counter
u8:1 tlp_retrans
u8:1 tcp_usec_ts read_mostly read_mostly
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 read_mostly tcp_recvmsg
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_limitedAnnotation
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.