net/packet/diag.c
Source file repositories/reference/linux-study-clean/net/packet/diag.c
File Facts
- System
- Linux kernel
- Corpus path
net/packet/diag.c- Extension
.c- Size
- 6693 bytes
- Lines
- 268
- 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/module.hlinux/sock_diag.hlinux/net.hlinux/netdevice.hlinux/packet_diag.hlinux/percpu.hnet/net_namespace.hnet/sock.hinternal.h
Detected Declarations
function pdiag_put_infofunction pdiag_put_mclistfunction pdiag_put_ringfunction pdiag_put_rings_cfgfunction pdiag_put_fanoutfunction sk_diag_fillfunction packet_diag_dumpfunction packet_diag_handler_dumpfunction packet_diag_initfunction packet_diag_exitmodule init packet_diag_init
Annotated Snippet
module_init(packet_diag_init);
module_exit(packet_diag_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("PACKET socket monitoring via SOCK_DIAG");
MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 17 /* AF_PACKET */);Annotation
- Immediate include surface: `linux/module.h`, `linux/sock_diag.h`, `linux/net.h`, `linux/netdevice.h`, `linux/packet_diag.h`, `linux/percpu.h`, `net/net_namespace.h`, `net/sock.h`.
- Detected declarations: `function pdiag_put_info`, `function pdiag_put_mclist`, `function pdiag_put_ring`, `function pdiag_put_rings_cfg`, `function pdiag_put_fanout`, `function sk_diag_fill`, `function packet_diag_dump`, `function packet_diag_handler_dump`, `function packet_diag_init`, `function packet_diag_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.