187 lines
3.3 KiB
C
187 lines
3.3 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause */
|
|
|
|
/* Authors: Bernard Metzler <bmt@zurich.ibm.com> */
|
|
/* Copyright (c) 2008-2019, IBM Corporation */
|
|
|
|
#ifndef _SIW_USER_H
|
|
#define _SIW_USER_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
#define SIW_NODE_DESC_COMMON "Software iWARP stack"
|
|
#define SIW_ABI_VERSION 1
|
|
#define SIW_MAX_SGE 6
|
|
#define SIW_UOBJ_MAX_KEY 0x08FFFF
|
|
#define SIW_INVAL_UOBJ_KEY (SIW_UOBJ_MAX_KEY + 1)
|
|
|
|
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 */
|
|
struct siw_sqe {
|
|
__aligned_u64 id;
|
|
__u16 flags;
|
|
__u8 num_sge;
|
|
/* Contains enum siw_opcode values */
|
|
__u8 opcode;
|
|
__u32 rkey;
|
|
union {
|
|
__aligned_u64 raddr;
|
|
__aligned_u64 base_mr;
|
|
};
|
|
union {
|
|
struct siw_sge sge[SIW_MAX_SGE];
|
|
__aligned_u64 access;
|
|
};
|
|
};
|
|
|
|
/* Receive Queue Element */
|
|
struct siw_rqe {
|
|
__aligned_u64 id;
|
|
__u16 flags;
|
|
__u8 num_sge;
|
|
/*
|
|
* only used by kernel driver,
|
|
* ignored if set by user
|
|
*/
|
|
__u8 opcode;
|
|
__u32 unused;
|
|
struct siw_sge sge[SIW_MAX_SGE];
|
|
};
|
|
|
|
enum siw_notify_flags {
|
|
SIW_NOTIFY_NOT = (0),
|
|
SIW_NOTIFY_SOLICITED = (1 << 0),
|
|
SIW_NOTIFY_NEXT_COMPLETION = (1 << 1),
|
|
SIW_NOTIFY_MISSED_EVENTS = (1 << 2),
|
|
SIW_NOTIFY_ALL = SIW_NOTIFY_SOLICITED | SIW_NOTIFY_NEXT_COMPLETION |
|
|
SIW_NOTIFY_MISSED_EVENTS
|
|
};
|
|
|
|
enum siw_wc_status {
|
|
SIW_WC_SUCCESS,
|
|
SIW_WC_LOC_LEN_ERR,
|
|
SIW_WC_LOC_PROT_ERR,
|
|
SIW_WC_LOC_QP_OP_ERR,
|
|
SIW_WC_WR_FLUSH_ERR,
|
|
SIW_WC_BAD_RESP_ERR,
|
|
SIW_WC_LOC_ACCESS_ERR,
|
|
SIW_WC_REM_ACCESS_ERR,
|
|
SIW_WC_REM_INV_REQ_ERR,
|
|
SIW_WC_GENERAL_ERR,
|
|
SIW_NUM_WC_STATUS
|
|
};
|
|
|
|
struct siw_cqe {
|
|
__aligned_u64 id;
|
|
__u8 flags;
|
|
__u8 opcode;
|
|
__u16 status;
|
|
__u32 bytes;
|
|
union {
|
|
__aligned_u64 imm_data;
|
|
__u32 inval_stag;
|
|
};
|
|
/* QP number or QP pointer */
|
|
union {
|
|
struct ib_qp *base_qp;
|
|
__aligned_u64 qp_id;
|
|
};
|
|
};
|
|
|
|
/*
|
|
* Shared structure between user and kernel
|
|
* to control CQ arming.
|
|
*/
|
|
struct siw_cq_ctrl {
|
|
__u32 flags;
|
|
__u32 pad;
|
|
};
|
|
#endif
|