include/net/secure_seq.h

File Facts

System

Linux kernel

Corpus path

include/net/secure_seq.h

Extension

.h

Size

1212 bytes

Lines

52

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

Detected Declarations

• struct net
• function secure_tcp_seq
• function secure_tcpv6_seq

Annotated Snippet

#ifndef _NET_SECURE_SEQ
#define _NET_SECURE_SEQ

#include <linux/types.h>

struct net;
extern struct net init_net;

union tcp_seq_and_ts_off {
	struct {
		u32 seq;
		u32 ts_off;
	};
	u64 hash64;
};

u64 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport);
u64 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
			       __be16 dport);
union tcp_seq_and_ts_off
secure_tcp_seq_and_ts_off(const struct net *net, __be32 saddr, __be32 daddr,
			  __be16 sport, __be16 dport);

static inline u32 secure_tcp_seq(__be32 saddr, __be32 daddr,
				 __be16 sport, __be16 dport)
{
	union tcp_seq_and_ts_off ts;

	ts = secure_tcp_seq_and_ts_off(&init_net, saddr, daddr,
				       sport, dport);

	return ts.seq;
}

union tcp_seq_and_ts_off
secure_tcpv6_seq_and_ts_off(const struct net *net, const __be32 *saddr,
			    const __be32 *daddr,
			    __be16 sport, __be16 dport);

static inline u32 secure_tcpv6_seq(const __be32 *saddr, const __be32 *daddr,
				   __be16 sport, __be16 dport)
{
	union tcp_seq_and_ts_off ts;

	ts = secure_tcpv6_seq_and_ts_off(&init_net, saddr, daddr,
					 sport, dport);

	return ts.seq;
}
#endif /* _NET_SECURE_SEQ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct net`, `function secure_tcp_seq`, `function secure_tcpv6_seq`.
• 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.