net/ipv4/ah4.c

File Facts

System

Linux kernel

Corpus path

net/ipv4/ah4.c

Extension

.c

Size

14313 bytes

Lines

613

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.
• 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

• crypto/hash.h
• crypto/utils.h
• linux/err.h
• linux/module.h
• linux/slab.h
• net/ip.h
• net/xfrm.h
• net/ah.h
• linux/crypto.h
• linux/pfkeyv2.h
• linux/scatterlist.h
• net/icmp.h
• net/protocol.h

Detected Declarations

• struct ah_skb_cb
• function ip_clear_mutable_options
• function ah_output_done
• function ah_output
• function ah_input_done
• function ah_input
• function ah4_err
• function ah_init_state
• function ah_destroy
• function ah4_rcv_cb
• function ah4_init
• function ah4_fini
• module init ah4_init

Annotated Snippet

module_init(ah4_init);
module_exit(ah4_fini);
MODULE_DESCRIPTION("IPv4 AH transformation library");
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_TYPE(AF_INET, XFRM_PROTO_AH);

Annotation

• Immediate include surface: `crypto/hash.h`, `crypto/utils.h`, `linux/err.h`, `linux/module.h`, `linux/slab.h`, `net/ip.h`, `net/xfrm.h`, `net/ah.h`.
• Detected declarations: `struct ah_skb_cb`, `function ip_clear_mutable_options`, `function ah_output_done`, `function ah_output`, `function ah_input_done`, `function ah_input`, `function ah4_err`, `function ah_init_state`, `function ah_destroy`, `function ah4_rcv_cb`.
• 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.