net/ipv4/tcp_cubic.c

File Facts

System

Linux kernel

Corpus path

net/ipv4/tcp_cubic.c

Extension

.c

Size

16484 bytes

Lines

553

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

• Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/mm.h
• linux/btf.h
• linux/btf_ids.h
• linux/module.h
• linux/math64.h
• net/tcp.h

Detected Declarations

• struct bictcp
• function bictcp_reset
• function bictcp_clock_us
• function bictcp_hystart_reset
• function cubictcp_init
• function cubictcp_cwnd_event_tx_start
• function cubic_root
• function bictcp_update
• function cubictcp_cong_avoid
• function cubictcp_recalc_ssthresh
• function cubictcp_state
• function hystart_ack_delay
• function hystart_update
• function cubictcp_acked
• function cubictcp_register
• function cubictcp_unregister
• module init cubictcp_register

Annotated Snippet

module_init(cubictcp_register);
module_exit(cubictcp_unregister);

MODULE_AUTHOR("Sangtae Ha, Stephen Hemminger");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("CUBIC TCP");
MODULE_VERSION("2.3");

Annotation

• Immediate include surface: `linux/mm.h`, `linux/btf.h`, `linux/btf_ids.h`, `linux/module.h`, `linux/math64.h`, `net/tcp.h`.
• Detected declarations: `struct bictcp`, `function bictcp_reset`, `function bictcp_clock_us`, `function bictcp_hystart_reset`, `function cubictcp_init`, `function cubictcp_cwnd_event_tx_start`, `function cubic_root`, `function bictcp_update`, `function cubictcp_cong_avoid`, `function cubictcp_recalc_ssthresh`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: integration implementation candidate.

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.