net/netfilter/xt_socket.c

File Facts

System

Linux kernel

Corpus path

net/netfilter/xt_socket.c

Extension

.c

Size

8529 bytes

Lines

326

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/module.h
• linux/skbuff.h
• linux/netfilter/x_tables.h
• linux/netfilter_ipv4/ip_tables.h
• net/tcp.h
• net/udp.h
• net/icmp.h
• net/sock.h
• net/inet_sock.h
• net/netfilter/ipv4/nf_defrag_ipv4.h
• linux/netfilter_ipv6/ip6_tables.h
• net/inet6_hashtables.h
• net/netfilter/ipv6/nf_defrag_ipv6.h
• net/netfilter/nf_socket.h
• linux/netfilter/xt_socket.h

Detected Declarations

• function Copyright
• function socket_mt4_v0
• function socket_mt4_v1_v2_v3
• function socket_mt6_v1_v2_v3
• function socket_mt_enable_defrag
• function socket_mt_v1_check
• function socket_mt_v2_check
• function socket_mt_v3_check
• function socket_mt_destroy
• function socket_mt_init
• function socket_mt_exit
• module init socket_mt_init

Annotated Snippet

module_init(socket_mt_init);
module_exit(socket_mt_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Krisztian Kovacs, Balazs Scheidler");
MODULE_DESCRIPTION("x_tables socket match module");
MODULE_ALIAS("ipt_socket");
MODULE_ALIAS("ip6t_socket");

Annotation

• Immediate include surface: `linux/module.h`, `linux/skbuff.h`, `linux/netfilter/x_tables.h`, `linux/netfilter_ipv4/ip_tables.h`, `net/tcp.h`, `net/udp.h`, `net/icmp.h`, `net/sock.h`.
• Detected declarations: `function Copyright`, `function socket_mt4_v0`, `function socket_mt4_v1_v2_v3`, `function socket_mt6_v1_v2_v3`, `function socket_mt_enable_defrag`, `function socket_mt_v1_check`, `function socket_mt_v2_check`, `function socket_mt_v3_check`, `function socket_mt_destroy`, `function socket_mt_init`.
• 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.