drivers/infiniband/hw/irdma/defs.h

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/hw/irdma/defs.h

Extension

.h

Size

42588 bytes

Lines

1189

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• enum irdma_protocol_used
• enum irdma_cqp_op_type
• enum irdma_qp_wqe_size
• enum irdma_ws_node_op
• enum irdma_alignment
• enum icrdma_protocol_used
• function set_64bit_val
• function set_32bit_val
• function get_64bit_val
• function get_32bit_val

Annotated Snippet

if (!IRDMA_RING_FULL_ERR(_ring)) { \
			(_ring).head = ((_ring).head + 1) % size; \
			(_retcode) = 0; \
		} else { \
			(_retcode) = -ENOMEM; \
		} \
	}
#define IRDMA_RING_MOVE_HEAD_BY_COUNT(_ring, _count, _retcode) \
	{ \
		register u32 size; \
		size = (_ring).size; \
		if ((IRDMA_RING_USED_QUANTA(_ring) + (_count)) < size) { \
			(_ring).head = ((_ring).head + (_count)) % size; \
			(_retcode) = 0; \
		} else { \
			(_retcode) = -ENOMEM; \
		} \
	}
#define IRDMA_SQ_RING_MOVE_HEAD(_ring, _retcode) \
	{ \
		register u32 size; \
		size = (_ring).size;  \
		if (!IRDMA_SQ_RING_FULL_ERR(_ring)) { \
			(_ring).head = ((_ring).head + 1) % size; \
			(_retcode) = 0; \
		} else { \
			(_retcode) = -ENOMEM; \
		} \
	}
#define IRDMA_SQ_RING_MOVE_HEAD_BY_COUNT(_ring, _count, _retcode) \
	{ \
		register u32 size; \
		size = (_ring).size; \
		if ((IRDMA_RING_USED_QUANTA(_ring) + (_count)) < (size - 256)) { \
			(_ring).head = ((_ring).head + (_count)) % size; \
			(_retcode) = 0; \
		} else { \
			(_retcode) = -ENOMEM; \
		} \
	}
#define IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(_ring, _count) \
	(_ring).head = ((_ring).head + (_count)) % (_ring).size

#define IRDMA_RING_MOVE_TAIL(_ring) \
	(_ring).tail = ((_ring).tail + 1) % (_ring).size

#define IRDMA_RING_MOVE_HEAD_NOCHECK(_ring) \
	(_ring).head = ((_ring).head + 1) % (_ring).size

#define IRDMA_RING_MOVE_TAIL_BY_COUNT(_ring, _count) \
	(_ring).tail = ((_ring).tail + (_count)) % (_ring).size

#define IRDMA_RING_SET_TAIL(_ring, _pos) \
	(_ring).tail = (_pos) % (_ring).size

#define IRDMA_RING_FULL_ERR(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) == ((_ring).size - 1))  \
	)

#define IRDMA_ERR_RING_FULL2(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) == ((_ring).size - 2))  \
	)

#define IRDMA_ERR_RING_FULL3(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) == ((_ring).size - 3))  \
	)

#define IRDMA_SQ_RING_FULL_ERR(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) == ((_ring).size - 257))  \
	)

#define IRDMA_ERR_SQ_RING_FULL2(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) == ((_ring).size - 258))  \
	)
#define IRDMA_ERR_SQ_RING_FULL3(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) == ((_ring).size - 259))  \
	)
#define IRDMA_RING_MORE_WORK(_ring) \
	( \
		(IRDMA_RING_USED_QUANTA(_ring) != 0) \
	)

#define IRDMA_RING_USED_QUANTA(_ring) \
	( \

Annotation

• Detected declarations: `enum irdma_protocol_used`, `enum irdma_cqp_op_type`, `enum irdma_qp_wqe_size`, `enum irdma_ws_node_op`, `enum irdma_alignment`, `enum icrdma_protocol_used`, `function set_64bit_val`, `function set_32bit_val`, `function get_64bit_val`, `function get_32bit_val`.
• Atlas domain: Driver Families / drivers/infiniband.
• Implementation status: source 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.