net/sched/act_ctinfo.c

File Facts

System

Linux kernel

Corpus path

net/sched/act_ctinfo.c

Extension

.c

Size

10557 bytes

Lines

405

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/init.h
• linux/kernel.h
• linux/skbuff.h
• linux/rtnetlink.h
• linux/pkt_cls.h
• linux/ip.h
• linux/ipv6.h
• net/netlink.h
• net/pkt_sched.h
• net/act_api.h
• net/pkt_cls.h
• net/inet_ecn.h
• uapi/linux/tc_act/tc_ctinfo.h
• net/tc_act/tc_ctinfo.h
• net/tc_wrapper.h
• net/netfilter/nf_conntrack.h
• net/netfilter/nf_conntrack_core.h
• net/netfilter/nf_conntrack_ecache.h
• net/netfilter/nf_conntrack_zones.h

Detected Declarations

• function tcf_ctinfo_dscp_set
• function tcf_ctinfo_cpmark_set
• function tcf_ctinfo_act
• function tcf_ctinfo_init
• function tcf_ctinfo_dump
• function tcf_ctinfo_cleanup
• function ctinfo_init_net
• function ctinfo_exit_net
• function ctinfo_init_module
• function ctinfo_cleanup_module
• module init ctinfo_init_module

Annotated Snippet

module_init(ctinfo_init_module);
module_exit(ctinfo_cleanup_module);
MODULE_AUTHOR("Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>");
MODULE_DESCRIPTION("Connection tracking mark actions");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/kernel.h`, `linux/skbuff.h`, `linux/rtnetlink.h`, `linux/pkt_cls.h`, `linux/ip.h`, `linux/ipv6.h`.
• Detected declarations: `function tcf_ctinfo_dscp_set`, `function tcf_ctinfo_cpmark_set`, `function tcf_ctinfo_act`, `function tcf_ctinfo_init`, `function tcf_ctinfo_dump`, `function tcf_ctinfo_cleanup`, `function ctinfo_init_net`, `function ctinfo_exit_net`, `function ctinfo_init_module`, `function ctinfo_cleanup_module`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.