net/netfilter/nf_conntrack_netlink.c

File Facts

System

Linux kernel

Corpus path

net/netfilter/nf_conntrack_netlink.c

Extension

.c

Size

97023 bytes

Lines

3942

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/init.h
• linux/module.h
• linux/kernel.h
• linux/rculist.h
• linux/rculist_nulls.h
• linux/types.h
• linux/timer.h
• linux/security.h
• linux/skbuff.h
• linux/errno.h
• linux/netlink.h
• linux/spinlock.h
• linux/interrupt.h
• linux/slab.h
• linux/siphash.h
• linux/netfilter.h
• net/ipv6.h
• net/netlink.h
• net/sock.h
• net/netfilter/nf_conntrack.h
• net/netfilter/nf_conntrack_core.h
• net/netfilter/nf_conntrack_expect.h
• net/netfilter/nf_conntrack_helper.h
• net/netfilter/nf_conntrack_seqadj.h
• net/netfilter/nf_conntrack_l4proto.h
• net/netfilter/nf_conntrack_tuple.h
• net/netfilter/nf_conntrack_acct.h
• net/netfilter/nf_conntrack_zones.h
• net/netfilter/nf_conntrack_timestamp.h
• net/netfilter/nf_conntrack_labels.h
• net/netfilter/nf_conntrack_synproxy.h
• net/netfilter/nf_nat.h

Detected Declarations

• struct ctnetlink_list_dump_ctx
• struct ctnetlink_filter_u32
• struct ctnetlink_filter
• function ctnetlink_dump_tuples_proto
• function ipv4_tuple_to_nlattr
• function ipv6_tuple_to_nlattr
• function ctnetlink_dump_tuples_ip
• function ctnetlink_dump_tuples
• function ctnetlink_dump_zone_id
• function ctnetlink_dump_status
• function ctnetlink_dump_timeout
• function ctnetlink_dump_protoinfo
• function ctnetlink_dump_helpinfo
• function dump_counters
• function ctnetlink_dump_acct
• function ctnetlink_dump_timestamp
• function ctnetlink_dump_mark
• function ctnetlink_dump_secctx
• function ctnetlink_dump_event_timestamp
• function ctnetlink_label_size
• function ctnetlink_dump_labels
• function ctnetlink_dump_master
• function dump_ct_seq_adj
• function ctnetlink_dump_ct_seq_adj
• function ctnetlink_dump_ct_synproxy
• function ctnetlink_dump_id
• function ctnetlink_dump_use
• function ctnetlink_dump_extinfo
• function ctnetlink_dump_info
• function ctnetlink_fill_info
• function ctnetlink_proto_size
• function ctnetlink_acct_size
• function ctnetlink_secctx_size
• function ctnetlink_timestamp_size
• function ctnetlink_nlmsg_size
• function ctnetlink_conntrack_event
• function ctnetlink_done
• function ctnetlink_parse_filter
• function ctnetlink_filter_parse_mark
• function ctnetlink_filter_parse_status
• function ctnetlink_alloc_filter
• function ctnetlink_needs_filter
• function ctnetlink_start
• function ctnetlink_filter_match_tuple
• function ctnetlink_filter_match
• function ctnetlink_get_id
• function ctnetlink_dump_table
• function hlist_nulls_for_each_entry

Annotated Snippet

module_init(ctnetlink_init);
module_exit(ctnetlink_exit);

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/kernel.h`, `linux/rculist.h`, `linux/rculist_nulls.h`, `linux/types.h`, `linux/timer.h`, `linux/security.h`.
• Detected declarations: `struct ctnetlink_list_dump_ctx`, `struct ctnetlink_filter_u32`, `struct ctnetlink_filter`, `function ctnetlink_dump_tuples_proto`, `function ipv4_tuple_to_nlattr`, `function ipv6_tuple_to_nlattr`, `function ctnetlink_dump_tuples_ip`, `function ctnetlink_dump_tuples`, `function ctnetlink_dump_zone_id`, `function ctnetlink_dump_status`.
• 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.