drivers/infiniband/core/uverbs_std_types_flow_action.c

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/core/uverbs_std_types_flow_action.c

Extension

.c

Size

2368 bytes

Lines

67

Domain

Driver Families

Bucket

drivers/infiniband

Inferred role

Driver Families: implementation source

Status

source 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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• rdma_core.h
• uverbs.h
• rdma/uverbs_std_types.h

Detected Declarations

• function Copyright

Annotated Snippet

#include "rdma_core.h"
#include "uverbs.h"
#include <rdma/uverbs_std_types.h>

static int uverbs_free_flow_action(struct ib_uobject *uobject,
				   enum rdma_remove_reason why,
				   struct uverbs_attr_bundle *attrs)
{
	struct ib_flow_action *action = uobject->object;

	if (atomic_read(&action->usecnt))
		return -EBUSY;

	return action->device->ops.destroy_flow_action(action);
}

DECLARE_UVERBS_NAMED_METHOD_DESTROY(
	UVERBS_METHOD_FLOW_ACTION_DESTROY,
	UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_FLOW_ACTION_HANDLE,
			UVERBS_OBJECT_FLOW_ACTION,
			UVERBS_ACCESS_DESTROY,
			UA_MANDATORY));

DECLARE_UVERBS_NAMED_OBJECT(
	UVERBS_OBJECT_FLOW_ACTION,
	UVERBS_TYPE_ALLOC_IDR(uverbs_free_flow_action),
	&UVERBS_METHOD(UVERBS_METHOD_FLOW_ACTION_DESTROY));

const struct uapi_definition uverbs_def_obj_flow_action[] = {
	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
		UVERBS_OBJECT_FLOW_ACTION,
		UAPI_DEF_OBJ_NEEDS_FN(destroy_flow_action)),
	{}
};

Annotation

• Immediate include surface: `rdma_core.h`, `uverbs.h`, `rdma/uverbs_std_types.h`.
• Detected declarations: `function Copyright`.
• Atlas domain: Driver Families / drivers/infiniband.
• Implementation status: source 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.