drivers/net/ppp/ppp_deflate.c

File Facts

System

Linux kernel

Corpus path

drivers/net/ppp/ppp_deflate.c

Extension

.c

Size

18167 bytes

Lines

636

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.
• 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/slab.h
• linux/vmalloc.h
• linux/init.h
• linux/string.h
• linux/ppp_defs.h
• linux/ppp-comp.h
• linux/zlib.h
• linux/unaligned.h

Detected Declarations

• struct ppp_deflate_state
• function z_comp_free
• function z_comp_init
• function z_comp_reset
• function z_compress
• function z_comp_stats
• function z_decomp_free
• function z_decomp_init
• function z_decomp_reset
• function z_decompress
• function z_incomp
• function deflate_init
• function deflate_cleanup
• module init deflate_init

Annotated Snippet

module_init(deflate_init);
module_exit(deflate_cleanup);
MODULE_DESCRIPTION("PPP Deflate compression module");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_ALIAS("ppp-compress-" __stringify(CI_DEFLATE));
MODULE_ALIAS("ppp-compress-" __stringify(CI_DEFLATE_DRAFT));

Annotation

• Immediate include surface: `linux/module.h`, `linux/slab.h`, `linux/vmalloc.h`, `linux/init.h`, `linux/string.h`, `linux/ppp_defs.h`, `linux/ppp-comp.h`, `linux/zlib.h`.
• Detected declarations: `struct ppp_deflate_state`, `function z_comp_free`, `function z_comp_init`, `function z_comp_reset`, `function z_compress`, `function z_comp_stats`, `function z_decomp_free`, `function z_decomp_init`, `function z_decomp_reset`, `function z_decompress`.
• Atlas domain: Driver Families / drivers/net.
• 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.