net/sched/act_mpls.c

File Facts

System

Linux kernel

Corpus path

net/sched/act_mpls.c

Extension

.c

Size

12803 bytes

Lines

490

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/if_arp.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/mpls.h
• linux/rtnetlink.h
• linux/skbuff.h
• linux/tc_act/tc_mpls.h
• net/mpls.h
• net/netlink.h
• net/pkt_sched.h
• net/pkt_cls.h
• net/tc_act/tc_mpls.h
• net/tc_wrapper.h

Detected Declarations

• function tcf_mpls_get_lse
• function tcf_mpls_act
• function valid_label
• function tcf_mpls_init
• function tcf_mpls_cleanup
• function tcf_mpls_dump
• function tcf_mpls_offload_act_setup
• function mpls_init_net
• function mpls_exit_net
• function mpls_init_module
• function mpls_cleanup_module
• module init mpls_init_module

Annotated Snippet

module_init(mpls_init_module);
module_exit(mpls_cleanup_module);

MODULE_SOFTDEP("post: mpls_gso");
MODULE_AUTHOR("Netronome Systems <oss-drivers@netronome.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("MPLS manipulation actions");

Annotation

• Immediate include surface: `linux/if_arp.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/mpls.h`, `linux/rtnetlink.h`, `linux/skbuff.h`, `linux/tc_act/tc_mpls.h`.
• Detected declarations: `function tcf_mpls_get_lse`, `function tcf_mpls_act`, `function valid_label`, `function tcf_mpls_init`, `function tcf_mpls_cleanup`, `function tcf_mpls_dump`, `function tcf_mpls_offload_act_setup`, `function mpls_init_net`, `function mpls_exit_net`, `function mpls_init_module`.
• 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.