drivers/infiniband/hw/irdma/user.h

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/hw/irdma/user.h

Extension

.h

Size

21006 bytes

Lines

676

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

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

Detected Declarations

• struct irdma_srq_uk
• struct irdma_srq_uk_init_info
• struct irdma_qp_uk
• struct irdma_cq_uk
• struct irdma_qp_uk_init_info
• struct irdma_cq_uk_init_info
• struct irdma_ring
• struct irdma_cqe
• struct irdma_extended_cqe
• struct irdma_post_send
• struct irdma_post_rq_info
• struct irdma_rdma_write
• struct irdma_rdma_read
• struct irdma_bind_window
• struct irdma_atomic_fetch_add
• struct irdma_atomic_compare_swap
• struct irdma_inv_local_stag
• struct irdma_post_sq_info
• struct irdma_cq_poll_info
• struct qp_err_code
• struct irdma_wqe_uk_ops
• struct irdma_srq_uk
• struct irdma_srq_uk_init_info
• struct irdma_sq_uk_wr_trk_info
• struct irdma_qp_quanta
• struct irdma_qp_uk
• struct irdma_cq_uk
• struct irdma_qp_uk_init_info
• struct irdma_cq_uk_init_info
• enum irdma_device_caps_const
• enum irdma_addressing_type
• enum irdma_flush_opcode
• enum irdma_qp_event_type
• enum irdma_cmpl_status
• enum irdma_cmpl_notify
• enum irdma_qp_caps
• function irdma_ae_to_qp_err_code

Annotated Snippet

struct irdma_ring {
	u32 head;
	u32 tail;
	u32 size;
};

struct irdma_cqe {
	__le64 buf[IRDMA_CQE_SIZE];
};

struct irdma_extended_cqe {
	__le64 buf[IRDMA_EXTENDED_CQE_SIZE];
};

struct irdma_post_send {
	struct ib_sge *sg_list;
	u32 num_sges;
	u32 qkey;
	u32 dest_qp;
	u32 ah_id;
};

struct irdma_post_rq_info {
	u64 wr_id;
	struct ib_sge *sg_list;
	u32 num_sges;
};

struct irdma_rdma_write {
	struct ib_sge *lo_sg_list;
	u32 num_lo_sges;
	struct ib_sge rem_addr;
};

struct irdma_rdma_read {
	struct ib_sge *lo_sg_list;
	u32 num_lo_sges;
	struct ib_sge rem_addr;
};

struct irdma_bind_window {
	irdma_stag mr_stag;
	u64 bind_len;
	void *va;
	enum irdma_addressing_type addressing_type;
	bool ena_reads:1;
	bool ena_writes:1;
	irdma_stag mw_stag;
	bool mem_window_type_1:1;
	bool remote_atomics_en:1;
};

struct irdma_atomic_fetch_add {
	u64 tagged_offset;
	u64 remote_tagged_offset;
	u64 fetch_add_data_bytes;
	u32 stag;
	u32 remote_stag;
};

struct irdma_atomic_compare_swap {
	u64 tagged_offset;
	u64 remote_tagged_offset;
	u64 swap_data_bytes;
	u64 compare_data_bytes;
	u32 stag;
	u32 remote_stag;
};

struct irdma_inv_local_stag {
	irdma_stag target_stag;
};

struct irdma_post_sq_info {
	u64 wr_id;
	u8 op_type;
	u8 l4len;
	bool signaled:1;
	bool read_fence:1;
	bool local_fence:1;
	bool inline_data:1;
	bool imm_data_valid:1;
	bool report_rtt:1;
	bool udp_hdr:1;
	bool defer_flag:1;
	bool remote_atomic_en:1;
	u32 imm_data;
	u32 stag_to_inv;
	union {
		struct irdma_post_send send;

Annotation

• Detected declarations: `struct irdma_srq_uk`, `struct irdma_srq_uk_init_info`, `struct irdma_qp_uk`, `struct irdma_cq_uk`, `struct irdma_qp_uk_init_info`, `struct irdma_cq_uk_init_info`, `struct irdma_ring`, `struct irdma_cqe`, `struct irdma_extended_cqe`, `struct irdma_post_send`.
• 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.