drivers/infiniband/core/iwcm.c

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/core/iwcm.c

Extension

.c

Size

33696 bytes

Lines

1207

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/dma-mapping.h
• linux/err.h
• linux/idr.h
• linux/interrupt.h
• linux/rbtree.h
• linux/sched.h
• linux/spinlock.h
• linux/workqueue.h
• linux/completion.h
• linux/slab.h
• linux/module.h
• linux/sysctl.h
• rdma/iw_cm.h
• rdma/ib_addr.h
• rdma/iw_portmap.h
• rdma/rdma_netlink.h
• iwcm.h

Detected Declarations

• struct iwcm_work
• function iwcm_reject_msg
• function provider
• function put_work
• function dealloc_work_entries
• function list_for_each_safe
• function alloc_work_entries
• function copy_private_data
• function free_cm_id
• function iwcm_deref_id
• function add_ref
• function rem_ref
• function iwcm_modify_qp_err
• function iwcm_modify_qp_sqd
• function iw_cm_disconnect
• function destroy_cm_id
• function iw_destroy_cm_id
• function actual
• function iwpm_create_mapinfo
• function iw_cm_listen
• function iw_cm_reject
• function iw_cm_accept
• function iw_cm_connect
• function cm_conn_req_handler
• function cm_conn_est_handler
• function cm_conn_rep_handler
• function cm_disconnect_handler
• function cm_close_handler
• function process_event
• function cm_work_handler
• function cm_event_handler
• function iwcm_init_qp_init_attr
• function iwcm_init_qp_rts_attr
• function iw_cm_init_qp_attr
• function iw_cm_init
• function iw_cm_cleanup
• module init iw_cm_init
• export iwcm_reject_msg
• export iw_create_cm_id
• export iw_cm_disconnect
• export iw_destroy_cm_id
• export iw_cm_listen
• export iw_cm_reject
• export iw_cm_accept
• export iw_cm_connect
• export iw_cm_init_qp_attr

Annotated Snippet

module_init(iw_cm_init);
module_exit(iw_cm_cleanup);

Annotation

• Immediate include surface: `linux/dma-mapping.h`, `linux/err.h`, `linux/idr.h`, `linux/interrupt.h`, `linux/rbtree.h`, `linux/sched.h`, `linux/spinlock.h`, `linux/workqueue.h`.
• Detected declarations: `struct iwcm_work`, `function iwcm_reject_msg`, `function provider`, `function put_work`, `function dealloc_work_entries`, `function list_for_each_safe`, `function alloc_work_entries`, `function copy_private_data`, `function free_cm_id`, `function iwcm_deref_id`.
• 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.