net/sched/act_bpf.c

File Facts

System

Linux kernel

Corpus path

net/sched/act_bpf.c

Extension

.c

Size

10112 bytes

Lines

439

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/init.h
• linux/kernel.h
• linux/skbuff.h
• linux/rtnetlink.h
• linux/filter.h
• linux/bpf.h
• net/netlink.h
• net/sock.h
• net/pkt_sched.h
• net/pkt_cls.h
• linux/tc_act/tc_bpf.h
• net/tc_act/tc_bpf.h
• net/tc_wrapper.h

Detected Declarations

• struct tcf_bpf_cfg
• function tcf_bpf_act
• function tcf_bpf_is_ebpf
• function tcf_bpf_dump_bpf_info
• function tcf_bpf_dump_ebpf_info
• function tcf_bpf_dump
• function tcf_bpf_init_from_ops
• function tcf_bpf_init_from_efd
• function tcf_bpf_cfg_cleanup
• function tcf_bpf_prog_fill_cfg
• function tcf_bpf_init
• function tcf_bpf_cleanup
• function bpf_init_net
• function bpf_exit_net
• function bpf_init_module
• function bpf_cleanup_module
• module init bpf_init_module

Annotated Snippet

module_init(bpf_init_module);
module_exit(bpf_cleanup_module);

MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
MODULE_DESCRIPTION("TC BPF based action");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/kernel.h`, `linux/skbuff.h`, `linux/rtnetlink.h`, `linux/filter.h`, `linux/bpf.h`, `net/netlink.h`.
• Detected declarations: `struct tcf_bpf_cfg`, `function tcf_bpf_act`, `function tcf_bpf_is_ebpf`, `function tcf_bpf_dump_bpf_info`, `function tcf_bpf_dump_ebpf_info`, `function tcf_bpf_dump`, `function tcf_bpf_init_from_ops`, `function tcf_bpf_init_from_efd`, `function tcf_bpf_cfg_cleanup`, `function tcf_bpf_prog_fill_cfg`.
• 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.