net/sched/sch_netem.c

File Facts

System

Linux kernel

Corpus path

net/sched/sch_netem.c

Extension

.c

Size

35875 bytes

Lines

1431

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/mm.h
• linux/module.h
• linux/slab.h
• linux/types.h
• linux/kernel.h
• linux/errno.h
• linux/skbuff.h
• linux/vmalloc.h
• linux/prandom.h
• linux/rtnetlink.h
• linux/reciprocal_div.h
• linux/rbtree.h
• net/gso.h
• net/netlink.h
• net/pkt_sched.h
• net/inet_ecn.h

Detected Declarations

• struct disttable
• struct netem_sched_data
• struct crndstate
• struct prng
• struct slotstate
• struct clgstate
• struct netem_skb_cb
• function init_crandom
• function get_crandom
• function GI
• function cases
• function loss_event
• function tabledist
• function packet_time_ns
• function tfifo_reset
• function tfifo_enqueue
• function netem_enqueue
• function get_slot_next
• function netem_erase_head
• function netem_reset
• function dist_free
• function get_dist_table
• function validate_time
• function validate_slot
• function get_slot
• function get_correlation
• function get_reorder
• function get_corrupt
• function get_rate
• function get_loss_clg
• function nla_for_each_nested
• function parse_attr
• function netem_change
• function netem_init
• function netem_destroy
• function dump_loss_model
• function netem_dump
• function netem_dump_stats
• function netem_dump_class
• function netem_graft
• function netem_find
• function netem_walk
• function netem_module_init
• function netem_module_exit
• module init netem_module_init

Annotated Snippet

module_init(netem_module_init)
module_exit(netem_module_exit)
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Network characteristics emulator qdisc");

Annotation

• Immediate include surface: `linux/mm.h`, `linux/module.h`, `linux/slab.h`, `linux/types.h`, `linux/kernel.h`, `linux/errno.h`, `linux/skbuff.h`, `linux/vmalloc.h`.
• Detected declarations: `struct disttable`, `struct netem_sched_data`, `struct crndstate`, `struct prng`, `struct slotstate`, `struct clgstate`, `struct netem_skb_cb`, `function init_crandom`, `function get_crandom`, `function GI`.
• 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.