net/netfilter/nf_conntrack_h323_main.c

File Facts

System

Linux kernel

Corpus path

net/netfilter/nf_conntrack_h323_main.c

Extension

.c

Size

50143 bytes

Lines

1800

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.h
• linux/moduleparam.h
• linux/ctype.h
• linux/inet.h
• linux/in.h
• linux/ip.h
• linux/slab.h
• linux/udp.h
• linux/tcp.h
• linux/skbuff.h
• net/route.h
• net/ip6_route.h
• linux/netfilter_ipv4.h
• linux/netfilter_ipv6.h
• net/netfilter/nf_conntrack.h
• net/netfilter/nf_conntrack_core.h
• net/netfilter/nf_conntrack_tuple.h
• net/netfilter/nf_conntrack_expect.h
• net/netfilter/nf_conntrack_ecache.h
• net/netfilter/nf_conntrack_helper.h
• net/netfilter/nf_conntrack_zones.h
• linux/netfilter/nf_conntrack_h323.h

Detected Declarations

• function get_tpkt_data
• function get_h245_addr
• function expect_rtp_rtcp
• function expect_t120
• function process_h245_channel
• function process_olc
• function process_olca
• function process_h245
• function h245_help
• function get_h225_addr
• function expect_h245
• function callforward_do_filter
• function expect_callforwarding
• function callforward_do_filter
• function process_setup
• function get_h225_addr
• function process_callproceeding
• function process_connect
• function process_alerting
• function process_facility
• function process_progress
• function process_q931
• function q931_help
• function expect_q931
• function process_grq
• function process_gcf
• function process_rrq
• function process_rcf
• function process_urq
• function process_arq
• function process_acf
• function process_lrq
• function process_lcf
• function process_irr
• function process_ras
• function ras_help
• function h323_helper_init
• function h323_helper_exit
• function nf_conntrack_h323_fini
• function nf_conntrack_h323_init
• module init nf_conntrack_h323_init
• export nfct_h323_nat_hook
• export get_h225_addr

Annotated Snippet

module_init(nf_conntrack_h323_init);
module_exit(nf_conntrack_h323_fini);

MODULE_AUTHOR("Jing Min Zhao <zhaojingmin@users.sourceforge.net>");
MODULE_DESCRIPTION("H.323 connection tracking helper");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ip_conntrack_h323");
MODULE_ALIAS_NFCT_HELPER("RAS");
MODULE_ALIAS_NFCT_HELPER("Q.931");
MODULE_ALIAS_NFCT_HELPER("H.245");

Annotation

• Immediate include surface: `linux/module.h`, `linux/moduleparam.h`, `linux/ctype.h`, `linux/inet.h`, `linux/in.h`, `linux/ip.h`, `linux/slab.h`, `linux/udp.h`.
• Detected declarations: `function get_tpkt_data`, `function get_h245_addr`, `function expect_rtp_rtcp`, `function expect_t120`, `function process_h245_channel`, `function process_olc`, `function process_olca`, `function process_h245`, `function h245_help`, `function get_h225_addr`.
• 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.