drivers/net/wan/hdlc.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wan/hdlc.c

Extension

.c

Size

8303 bytes

Lines

380

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• 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/errno.h
• linux/hdlc.h
• linux/if_arp.h
• linux/inetdevice.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/notifier.h
• linux/pkt_sched.h
• linux/poll.h
• linux/rtnetlink.h
• linux/skbuff.h
• linux/slab.h
• net/net_namespace.h

Detected Declarations

• function hdlc_rcv
• function hdlc_start_xmit
• function hdlc_proto_start
• function hdlc_proto_stop
• function hdlc_device_event
• function hdlc_open
• function hdlc_close
• function hdlc_ioctl
• function hdlc_setup_dev
• function hdlc_setup
• function unregister_hdlc_device
• function attach_hdlc_protocol
• function detach_hdlc_protocol
• function register_hdlc_protocol
• function unregister_hdlc_protocol
• function hdlc_module_init
• function hdlc_module_exit
• module init hdlc_module_init
• export hdlc_start_xmit
• export hdlc_open
• export hdlc_close
• export hdlc_ioctl
• export alloc_hdlcdev
• export unregister_hdlc_device
• export attach_hdlc_protocol
• export detach_hdlc_protocol
• export register_hdlc_protocol
• export unregister_hdlc_protocol

Annotated Snippet

module_init(hdlc_module_init);
module_exit(hdlc_module_exit);

Annotation

• Immediate include surface: `linux/errno.h`, `linux/hdlc.h`, `linux/if_arp.h`, `linux/inetdevice.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/notifier.h`.
• Detected declarations: `function hdlc_rcv`, `function hdlc_start_xmit`, `function hdlc_proto_start`, `function hdlc_proto_stop`, `function hdlc_device_event`, `function hdlc_open`, `function hdlc_close`, `function hdlc_ioctl`, `function hdlc_setup_dev`, `function hdlc_setup`.
• Atlas domain: Driver Families / drivers/net.
• 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.