drivers/infiniband/core/cm.c

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/core/cm.c

Extension

.c

Size

132354 bytes

Lines

4561

Domain

Driver Families

Bucket

drivers/infiniband

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/completion.h
• linux/dma-mapping.h
• linux/device.h
• linux/module.h
• linux/err.h
• linux/idr.h
• linux/interrupt.h
• linux/random.h
• linux/rbtree.h
• linux/spinlock.h
• linux/slab.h
• linux/sysfs.h
• linux/workqueue.h
• linux/kdev_t.h
• linux/etherdevice.h
• rdma/ib_cache.h
• rdma/ib_cm.h
• rdma/ib_sysfs.h
• cm_msgs.h
• core_priv.h
• cm_trace.h

Detected Declarations

• struct cm_id_private
• struct cm_work
• struct cm_counter_attribute
• struct cm_port
• struct cm_device
• struct cm_av
• struct cm_work
• struct cm_timewait_info
• struct cm_id_private
• function ibcm_reject_msg
• function cm_dev_release
• function cm_device_put
• function cm_deref_id
• function cm_alloc_msg_agent
• function cm_free_msg
• function cm_alloc_priv_msg_rep
• function cm_alloc_priv_msg
• function cm_free_priv_msg
• function cm_alloc_response_msg_no_ah
• function cm_create_response_msg_ah
• function cm_alloc_response_msg
• function cm_set_private_data
• function cm_set_av_port
• function cm_init_av_for_lap
• function cm_init_av_for_response
• function get_cm_port_from_path
• function list_for_each_entry
• function list_for_each_entry
• function cm_init_av_by_path
• function cm_move_av_from_path
• function cm_destroy_av
• function cm_local_id
• function be32_lt
• function be32_gt
• function be64_lt
• function be64_gt
• function cm_insert_remote_id
• function cm_insert_remote_qpn
• function cm_insert_remote_sidr
• function cm_finalize_id
• function cm_free_work
• function cm_queue_work_unlock
• function cm_convert_to_ms
• function it
• function cm_remove_remote
• function cm_enter_timewait
• function cm_reset_to_idle
• function cm_destroy_id_wait_timeout

Annotated Snippet

module_init(ib_cm_init);
module_exit(ib_cm_cleanup);

Annotation

• Immediate include surface: `linux/completion.h`, `linux/dma-mapping.h`, `linux/device.h`, `linux/module.h`, `linux/err.h`, `linux/idr.h`, `linux/interrupt.h`, `linux/random.h`.
• Detected declarations: `struct cm_id_private`, `struct cm_work`, `struct cm_counter_attribute`, `struct cm_port`, `struct cm_device`, `struct cm_av`, `struct cm_work`, `struct cm_timewait_info`, `struct cm_id_private`, `function ibcm_reject_msg`.
• Atlas domain: Driver Families / drivers/infiniband.
• 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.