include/net/sctp/checksum.h

File Facts

System

Linux kernel

Corpus path

include/net/sctp/checksum.h

Extension

.h

Size

1072 bytes

Lines

41

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: implementation source

Status

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

Dependency Surface

• linux/types.h
• linux/sctp.h

Detected Declarations

• function Copyright

Annotated Snippet

#ifndef __sctp_checksum_h__
#define __sctp_checksum_h__

#include <linux/types.h>
#include <linux/sctp.h>

static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
					unsigned int offset)
{
	struct sctphdr *sh = (struct sctphdr *)(skb->data + offset);
	__le32 old = sh->checksum;
	u32 new;

	sh->checksum = 0;
	new = ~skb_crc32c(skb, offset, skb->len - offset, ~0);
	sh->checksum = old;
	return cpu_to_le32(new);
}

#endif /* __sctp_checksum_h__ */

Annotation

• Immediate include surface: `linux/types.h`, `linux/sctp.h`.
• Detected declarations: `function Copyright`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: source 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.