net/netfilter/nft_nat.c

File Facts

System

Linux kernel

Corpus path

net/netfilter/nft_nat.c

Extension

.c

Size

10281 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/init.h
• linux/skbuff.h
• linux/ip.h
• linux/string.h
• linux/netlink.h
• linux/netfilter.h
• linux/netfilter_ipv4.h
• linux/netfilter/nfnetlink.h
• linux/netfilter/nf_tables.h
• net/netfilter/nf_conntrack.h
• net/netfilter/nf_nat.h
• net/netfilter/nf_tables.h
• net/ip.h

Detected Declarations

• struct nft_nat
• function nft_nat_setup_addr
• function nft_nat_setup_proto
• function nft_nat_setup_netmap
• function nft_nat_eval
• function nft_nat_validate
• function nft_nat_init
• function nft_nat_dump
• function nft_nat_destroy
• function nft_nat_inet_eval
• function nft_nat_inet_module_init
• function nft_nat_inet_module_exit
• function nft_nat_inet_module_init
• function nft_nat_inet_module_exit
• function nft_nat_module_exit
• module init nft_nat_module_init

Annotated Snippet

module_init(nft_nat_module_init);
module_exit(nft_nat_module_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>");
MODULE_ALIAS_NFT_EXPR("nat");
MODULE_DESCRIPTION("Network Address Translation support");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/skbuff.h`, `linux/ip.h`, `linux/string.h`, `linux/netlink.h`, `linux/netfilter.h`, `linux/netfilter_ipv4.h`.
• Detected declarations: `struct nft_nat`, `function nft_nat_setup_addr`, `function nft_nat_setup_proto`, `function nft_nat_setup_netmap`, `function nft_nat_eval`, `function nft_nat_validate`, `function nft_nat_init`, `function nft_nat_dump`, `function nft_nat_destroy`, `function nft_nat_inet_eval`.
• 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.