net/ipv4/netfilter/arp_tables.c
Source file repositories/reference/linux-study-clean/net/ipv4/netfilter/arp_tables.c
File Facts
- System
- Linux kernel
- Corpus path
net/ipv4/netfilter/arp_tables.c- Extension
.c- Size
- 39971 bytes
- Lines
- 1652
- 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.
- Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
- Touches IRQ or DMA behavior; this matters for the representative real-device path.
- 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/kernel.hlinux/skbuff.hlinux/netdevice.hlinux/capability.hlinux/if_arp.hlinux/kmod.hlinux/vmalloc.hlinux/proc_fs.hlinux/module.hlinux/init.hlinux/mutex.hlinux/err.hnet/compat.hnet/sock.hlinux/uaccess.hlinux/netfilter/x_tables.hlinux/netfilter_arp/arp_tables.h../../netfilter/xt_repldata.h
Detected Declarations
struct compat_arpt_replacestruct compat_arpt_get_entriesfunction arp_devaddr_comparefunction ifname_comparefunction arp_packet_matchfunction arp_checkentryfunction arpt_errorfunction arpt_get_target_cfunction get_entryfunction arpt_do_tablefunction unconditionalfunction mark_source_chainsfunction check_targetfunction find_check_entryfunction check_underflowfunction check_entry_size_and_hooksfunction cleanup_entryfunction translate_tablefunction get_countersfunction for_each_possible_cpufunction xt_entry_foreachfunction get_old_countersfunction for_each_possible_cpufunction xt_entry_foreachfunction copy_entries_to_userfunction compat_standard_from_userfunction compat_standard_to_userfunction compat_calc_entryfunction compat_table_infofunction get_infofunction get_entriesfunction __do_replacefunction do_replacefunction do_add_countersfunction compat_release_entryfunction check_compat_entry_size_and_hooksfunction compat_copy_entry_from_userfunction translate_compat_tablefunction compat_do_replacefunction compat_copy_entry_to_userfunction compat_copy_entries_to_userfunction compat_get_entriesfunction do_arpt_set_ctlfunction do_arpt_get_ctlfunction __arpt_unregister_tablefunction arpt_register_tablefunction arpt_unregister_tablefunction arp_tables_net_init
Annotated Snippet
module_init(arp_tables_init);
module_exit(arp_tables_fini);Annotation
- Immediate include surface: `linux/kernel.h`, `linux/skbuff.h`, `linux/netdevice.h`, `linux/capability.h`, `linux/if_arp.h`, `linux/kmod.h`, `linux/vmalloc.h`, `linux/proc_fs.h`.
- Detected declarations: `struct compat_arpt_replace`, `struct compat_arpt_get_entries`, `function arp_devaddr_compare`, `function ifname_compare`, `function arp_packet_match`, `function arp_checkentry`, `function arpt_error`, `function arpt_get_target_c`, `function get_entry`, `function arpt_do_table`.
- Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
- Implementation status: integration implementation candidate.
- This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
- IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.
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.