net/vmw_vsock/vsock_loopback.c

File Facts

System

Linux kernel

Corpus path

net/vmw_vsock/vsock_loopback.c

Extension

.c

Size

5732 bytes

Lines

190

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/spinlock.h
• linux/module.h
• linux/list.h
• linux/virtio_vsock.h

Detected Declarations

• struct vsock_loopback
• function vsock_loopback_get_local_cid
• function vsock_loopback_send_pkt
• function vsock_loopback_cancel_pkt
• function vsock_loopback_stream_allow
• function vsock_loopback_msgzerocopy_allow
• function vsock_loopback_seqpacket_allow
• function vsock_loopback_work
• function vsock_loopback_init
• function vsock_loopback_exit
• module init vsock_loopback_init

Annotated Snippet

module_init(vsock_loopback_init);
module_exit(vsock_loopback_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Stefano Garzarella <sgarzare@redhat.com>");
MODULE_DESCRIPTION("loopback transport for vsock");
MODULE_ALIAS_NETPROTO(PF_VSOCK);

Annotation

• Immediate include surface: `linux/spinlock.h`, `linux/module.h`, `linux/list.h`, `linux/virtio_vsock.h`.
• Detected declarations: `struct vsock_loopback`, `function vsock_loopback_get_local_cid`, `function vsock_loopback_send_pkt`, `function vsock_loopback_cancel_pkt`, `function vsock_loopback_stream_allow`, `function vsock_loopback_msgzerocopy_allow`, `function vsock_loopback_seqpacket_allow`, `function vsock_loopback_work`, `function vsock_loopback_init`, `function vsock_loopback_exit`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.