drivers/scsi/device_handler/scsi_dh_rdac.c

File Facts

System

Linux kernel

Corpus path

drivers/scsi/device_handler/scsi_dh_rdac.c

Extension

.c

Size

20483 bytes

Lines

850

Domain

Driver Families

Bucket

drivers/scsi

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

• scsi/scsi.h
• scsi/scsi_eh.h
• scsi/scsi_dh.h
• linux/workqueue.h
• linux/slab.h
• linux/module.h

Detected Declarations

• struct rdac_mode_6_hdr
• struct rdac_mode_10_hdr
• struct rdac_mode_common
• struct rdac_pg_legacy
• struct rdac_pg_expanded
• struct c9_inquiry
• struct c4_inquiry
• struct c8_inquiry
• struct rdac_controller
• struct c2_inquiry
• struct rdac_dh_data
• struct rdac_queue_data
• function rdac_failover_get
• function list_for_each_entry
• function release_controller
• function list_for_each_entry
• function get_lun_info
• function check_ownership
• function list_for_each_entry_rcu
• function initialize_controller
• function set_mode_select
• function mode_select_handle_sense
• function send_mode_select
• function list_for_each_entry_safe
• function queue_mode_select
• function rdac_activate
• function rdac_prep_fn
• function rdac_check_sense
• function rdac_bus_attach
• function rdac_bus_detach
• function rdac_init
• function rdac_exit
• module init rdac_init

Annotated Snippet

module_init(rdac_init);
module_exit(rdac_exit);

MODULE_DESCRIPTION("Multipath LSI/Engenio/NetApp E-Series RDAC driver");
MODULE_AUTHOR("Mike Christie, Chandra Seetharaman");
MODULE_VERSION("01.00.0000.0000");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `scsi/scsi.h`, `scsi/scsi_eh.h`, `scsi/scsi_dh.h`, `linux/workqueue.h`, `linux/slab.h`, `linux/module.h`.
• Detected declarations: `struct rdac_mode_6_hdr`, `struct rdac_mode_10_hdr`, `struct rdac_mode_common`, `struct rdac_pg_legacy`, `struct rdac_pg_expanded`, `struct c9_inquiry`, `struct c4_inquiry`, `struct c8_inquiry`, `struct rdac_controller`, `struct c2_inquiry`.
• Atlas domain: Driver Families / drivers/scsi.
• 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.