net/netfilter/nf_conntrack_pptp.c
Source file repositories/reference/linux-study-clean/net/netfilter/nf_conntrack_pptp.c
File Facts
- System
- Linux kernel
- Corpus path
net/netfilter/nf_conntrack_pptp.c- Extension
.c- Size
- 16471 bytes
- Lines
- 558
- 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/skbuff.hlinux/in.hlinux/tcp.hnet/netfilter/nf_conntrack.hnet/netfilter/nf_conntrack_core.hnet/netfilter/nf_conntrack_helper.hnet/netfilter/nf_conntrack_zones.hlinux/netfilter/nf_conntrack_proto_gre.hlinux/netfilter/nf_conntrack_pptp.h
Detected Declarations
function pptp_expectfnfunction exp_grefunction pptp_inbound_pktfunction pptp_outbound_pktfunction conntrack_pptp_helpfunction ntohlfunction nf_conntrack_pptp_initfunction nf_conntrack_pptp_finimodule init nf_conntrack_pptp_initexport nf_nat_pptp_hookexport pptp_msg_name
Annotated Snippet
module_init(nf_conntrack_pptp_init);
module_exit(nf_conntrack_pptp_fini);Annotation
- Immediate include surface: `linux/module.h`, `linux/skbuff.h`, `linux/in.h`, `linux/tcp.h`, `net/netfilter/nf_conntrack.h`, `net/netfilter/nf_conntrack_core.h`, `net/netfilter/nf_conntrack_helper.h`, `net/netfilter/nf_conntrack_zones.h`.
- Detected declarations: `function pptp_expectfn`, `function exp_gre`, `function pptp_inbound_pkt`, `function pptp_outbound_pkt`, `function conntrack_pptp_help`, `function ntohl`, `function nf_conntrack_pptp_init`, `function nf_conntrack_pptp_fini`, `module init nf_conntrack_pptp_init`, `export nf_nat_pptp_hook`.
- 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.