include/uapi/rdma/siw-abi.h

Source file repositories/reference/linux-study-clean/include/uapi/rdma/siw-abi.h

File Facts

System
Linux kernel
Corpus path
include/uapi/rdma/siw-abi.h
Extension
.h
Size
3426 bytes
Lines
187
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

struct siw_uresp_create_cq {
	__u32 cq_id;
	__u32 num_cqe;
	__aligned_u64 cq_key;
};

struct siw_uresp_create_qp {
	__u32 qp_id;
	__u32 num_sqe;
	__u32 num_rqe;
	__u32 pad;
	__aligned_u64 sq_key;
	__aligned_u64 rq_key;
};

struct siw_ureq_reg_mr {
	__u8 stag_key;
	__u8 reserved[3];
	__u32 pad;
};

struct siw_uresp_reg_mr {
	__u32 stag;
	__u32 pad;
};

struct siw_uresp_create_srq {
	__u32 num_rqe;
	__u32 pad;
	__aligned_u64 srq_key;
};

struct siw_uresp_alloc_ctx {
	__u32 dev_id;
	__u32 pad;
};

enum siw_opcode {
	SIW_OP_WRITE,
	SIW_OP_READ,
	SIW_OP_READ_LOCAL_INV,
	SIW_OP_SEND,
	SIW_OP_SEND_WITH_IMM,
	SIW_OP_SEND_REMOTE_INV,

	/* Unsupported */
	SIW_OP_FETCH_AND_ADD,
	SIW_OP_COMP_AND_SWAP,

	SIW_OP_RECEIVE,
	/* provider internal SQE */
	SIW_OP_READ_RESPONSE,
	/*
	 * below opcodes valid for
	 * in-kernel clients only
	 */
	SIW_OP_INVAL_STAG,
	SIW_OP_REG_MR,
	SIW_NUM_OPCODES
};

/* Keep it same as ibv_sge to allow for memcpy */
struct siw_sge {
	__aligned_u64 laddr;
	__u32 length;
	__u32 lkey;
};

/*
 * Inline data are kept within the work request itself occupying
 * the space of sge[1] .. sge[n]. Therefore, inline data cannot be
 * supported if SIW_MAX_SGE is below 2 elements.
 */
#define SIW_MAX_INLINE (sizeof(struct siw_sge) * (SIW_MAX_SGE - 1))

#if SIW_MAX_SGE < 2
#error "SIW_MAX_SGE must be at least 2"
#endif

enum siw_wqe_flags {
	SIW_WQE_VALID = 1,
	SIW_WQE_INLINE = (1 << 1),
	SIW_WQE_SIGNALLED = (1 << 2),
	SIW_WQE_SOLICITED = (1 << 3),
	SIW_WQE_READ_FENCE = (1 << 4),
	SIW_WQE_REM_INVAL = (1 << 5),
	SIW_WQE_COMPLETED = (1 << 6)
};

/* Send Queue Element */

Annotation

Implementation Notes