net/ipv4/tcp_dctcp.c

File Facts

System

Linux kernel

Corpus path

net/ipv4/tcp_dctcp.c

Extension

.c

Size

9238 bytes

Lines

320

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/btf.h
• linux/btf_ids.h
• linux/module.h
• linux/mm.h
• net/tcp.h
• linux/inet_diag.h
• tcp_dctcp.h

Detected Declarations

• struct dctcp
• function dctcp_shift_g_set
• function dctcp_reset
• function dctcp_init
• function dctcp_ssthresh
• function dctcp_update_alpha
• function dctcp_react_to_loss
• function dctcp_state
• function dctcp_cwnd_event
• function dctcp_cwnd_event_tx_start
• function dctcp_get_info
• function dctcp_cwnd_undo
• function dctcp_register
• function dctcp_unregister
• module init dctcp_register

Annotated Snippet

module_init(dctcp_register);
module_exit(dctcp_unregister);

MODULE_AUTHOR("Daniel Borkmann <dborkman@redhat.com>");
MODULE_AUTHOR("Florian Westphal <fw@strlen.de>");
MODULE_AUTHOR("Glenn Judd <glenn.judd@morganstanley.com>");

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("DataCenter TCP (DCTCP)");

Annotation

• Immediate include surface: `linux/btf.h`, `linux/btf_ids.h`, `linux/module.h`, `linux/mm.h`, `net/tcp.h`, `linux/inet_diag.h`, `tcp_dctcp.h`.
• Detected declarations: `struct dctcp`, `function dctcp_shift_g_set`, `function dctcp_reset`, `function dctcp_init`, `function dctcp_ssthresh`, `function dctcp_update_alpha`, `function dctcp_react_to_loss`, `function dctcp_state`, `function dctcp_cwnd_event`, `function dctcp_cwnd_event_tx_start`.
• 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.