net/sched/sch_fq.c

File Facts

System

Linux kernel

Corpus path

net/sched/sch_fq.c

Extension

.c

Size

36749 bytes

Lines

1421

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.
• 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/types.h
• linux/kernel.h
• linux/jiffies.h
• linux/string.h
• linux/in.h
• linux/errno.h
• linux/init.h
• linux/skbuff.h
• linux/slab.h
• linux/rbtree.h
• linux/hash.h
• linux/prefetch.h
• linux/vmalloc.h
• net/netlink.h
• net/pkt_sched.h
• net/sock.h
• net/tcp_states.h
• net/tcp.h

Detected Declarations

• struct fq_skb_cb
• struct fq_flow
• struct fq_flow_head
• struct fq_perband_flows
• struct fq_sched_data
• enum new_flow
• function fq_prio2band
• function fq_flow_set_detached
• function fq_flow_is_detached
• function fq_flow_is_throttled
• function fq_flow_add_tail
• function fq_flow_unset_throttled
• function fq_flow_rb_insert
• function fq_flow_set_throttled
• function fq_gc_candidate
• function fq_gc
• function fq_fastpath_check
• function listener
• function fq_erase_head
• function fq_peek
• function flow_queue_add
• function fq_skb_cb
• function fq_packet_beyond_horizon
• function fq_flow_adjust_timer
• function fq_skb_tstamp_to_mono
• function fq_mono_to_skb_tstamp
• function fq_enqueue
• function fq_check_throttled
• function fq_flow_purge
• function fq_reset
• function fq_rehash
• function fq_free
• function fq_resize
• function fq_prio2band_compress_crumb
• function fq_prio2band_decompress_crumb
• function fq_load_weights
• function fq_load_priomap
• function fq_change
• function fq_destroy
• function fq_init
• function fq_dump
• function fq_dump_stats
• function fq_module_init
• function fq_module_exit
• module init fq_module_init

Annotated Snippet

module_init(fq_module_init)
module_exit(fq_module_exit)
MODULE_AUTHOR("Eric Dumazet");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Fair Queue Packet Scheduler");

Annotation

• Immediate include surface: `linux/module.h`, `linux/types.h`, `linux/kernel.h`, `linux/jiffies.h`, `linux/string.h`, `linux/in.h`, `linux/errno.h`, `linux/init.h`.
• Detected declarations: `struct fq_skb_cb`, `struct fq_flow`, `struct fq_flow_head`, `struct fq_perband_flows`, `struct fq_sched_data`, `enum new_flow`, `function fq_prio2band`, `function fq_flow_set_detached`, `function fq_flow_is_detached`, `function fq_flow_is_throttled`.
• 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.