net/netfilter/xt_TCPMSS.c
Source file repositories/reference/linux-study-clean/net/netfilter/xt_TCPMSS.c
File Facts
- System
- Linux kernel
- Corpus path
net/netfilter/xt_TCPMSS.c- Extension
.c- Size
- 8804 bytes
- Lines
- 347
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/module.hlinux/skbuff.hlinux/ip.hlinux/gfp.hlinux/ipv6.hlinux/tcp.hnet/dst.hnet/flow.hnet/ipv6.hnet/route.hnet/tcp.hlinux/netfilter_ipv4/ip_tables.hlinux/netfilter_ipv6/ip6_tables.hlinux/netfilter/x_tables.hlinux/netfilter/xt_tcpudp.hlinux/netfilter/xt_TCPMSS.h
Detected Declarations
function optlenfunction tcpmss_reverse_mtufunction tcpmss_mangle_packetfunction tcpmss_tg4function tcpmss_tg6function tcpmss_tg4_check_hooksfunction find_syn_matchfunction tcpmss_tg4_checkfunction tcpmss_tg6_checkfunction tcpmss_tg_initfunction tcpmss_tg_exitmodule init tcpmss_tg_init
Annotated Snippet
module_init(tcpmss_tg_init);
module_exit(tcpmss_tg_exit);Annotation
- Immediate include surface: `linux/module.h`, `linux/skbuff.h`, `linux/ip.h`, `linux/gfp.h`, `linux/ipv6.h`, `linux/tcp.h`, `net/dst.h`, `net/flow.h`.
- Detected declarations: `function optlen`, `function tcpmss_reverse_mtu`, `function tcpmss_mangle_packet`, `function tcpmss_tg4`, `function tcpmss_tg6`, `function tcpmss_tg4_check_hooks`, `function find_syn_match`, `function tcpmss_tg4_check`, `function tcpmss_tg6_check`, `function tcpmss_tg_init`.
- Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
- Implementation status: integration 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.