net/netfilter/xt_dccp.c
Source file repositories/reference/linux-study-clean/net/netfilter/xt_dccp.c
File Facts
- System
- Linux kernel
- Corpus path
net/netfilter/xt_dccp.c- Extension
.c- Size
- 4601 bytes
- Lines
- 189
- 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.
- Allocates kernel memory; connect allocation flags and lifetime to context constraints.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/module.hlinux/skbuff.hlinux/slab.hlinux/spinlock.hnet/ip.hlinux/dccp.hlinux/netfilter/x_tables.hlinux/netfilter/xt_dccp.hlinux/netfilter_ipv4/ip_tables.hlinux/netfilter_ipv6/ip6_tables.h
Detected Declarations
function dccp_find_optionfunction match_typesfunction match_optionfunction dccp_mtfunction dccp_mt_checkfunction dccp_mt_initfunction dccp_mt_exitmodule init dccp_mt_init
Annotated Snippet
module_init(dccp_mt_init);
module_exit(dccp_mt_exit);Annotation
- Immediate include surface: `linux/module.h`, `linux/skbuff.h`, `linux/slab.h`, `linux/spinlock.h`, `net/ip.h`, `linux/dccp.h`, `linux/netfilter/x_tables.h`, `linux/netfilter/xt_dccp.h`.
- Detected declarations: `function dccp_find_option`, `function match_types`, `function match_option`, `function dccp_mt`, `function dccp_mt_check`, `function dccp_mt_init`, `function dccp_mt_exit`, `module init dccp_mt_init`.
- 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.