mirror of https://gitee.com/openkylin/linux.git
186 lines
3.3 KiB
C
186 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
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/* Authors: Bernard Metzler <bmt@zurich.ibm.com> */
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/* Copyright (c) 2008-2019, IBM Corporation */
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#ifndef _SIW_USER_H
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#define _SIW_USER_H
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#include <linux/types.h>
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#define SIW_NODE_DESC_COMMON "Software iWARP stack"
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#define SIW_ABI_VERSION 1
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#define SIW_MAX_SGE 6
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#define SIW_UOBJ_MAX_KEY 0x08FFFF
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#define SIW_INVAL_UOBJ_KEY (SIW_UOBJ_MAX_KEY + 1)
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struct siw_uresp_create_cq {
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__u32 cq_id;
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__u32 num_cqe;
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__aligned_u64 cq_key;
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};
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struct siw_uresp_create_qp {
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__u32 qp_id;
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__u32 num_sqe;
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__u32 num_rqe;
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__u32 pad;
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__aligned_u64 sq_key;
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__aligned_u64 rq_key;
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};
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struct siw_ureq_reg_mr {
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__u8 stag_key;
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__u8 reserved[3];
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__u32 pad;
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};
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struct siw_uresp_reg_mr {
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__u32 stag;
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__u32 pad;
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};
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struct siw_uresp_create_srq {
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__u32 num_rqe;
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__u32 pad;
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__aligned_u64 srq_key;
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};
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struct siw_uresp_alloc_ctx {
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__u32 dev_id;
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__u32 pad;
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};
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enum siw_opcode {
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SIW_OP_WRITE,
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SIW_OP_READ,
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SIW_OP_READ_LOCAL_INV,
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SIW_OP_SEND,
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SIW_OP_SEND_WITH_IMM,
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SIW_OP_SEND_REMOTE_INV,
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/* Unsupported */
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SIW_OP_FETCH_AND_ADD,
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SIW_OP_COMP_AND_SWAP,
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SIW_OP_RECEIVE,
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/* provider internal SQE */
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SIW_OP_READ_RESPONSE,
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/*
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* below opcodes valid for
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* in-kernel clients only
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*/
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SIW_OP_INVAL_STAG,
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SIW_OP_REG_MR,
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SIW_NUM_OPCODES
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};
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/* Keep it same as ibv_sge to allow for memcpy */
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struct siw_sge {
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__aligned_u64 laddr;
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__u32 length;
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__u32 lkey;
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};
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/*
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* Inline data are kept within the work request itself occupying
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* the space of sge[1] .. sge[n]. Therefore, inline data cannot be
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* supported if SIW_MAX_SGE is below 2 elements.
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*/
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#define SIW_MAX_INLINE (sizeof(struct siw_sge) * (SIW_MAX_SGE - 1))
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#if SIW_MAX_SGE < 2
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#error "SIW_MAX_SGE must be at least 2"
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#endif
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enum siw_wqe_flags {
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SIW_WQE_VALID = 1,
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SIW_WQE_INLINE = (1 << 1),
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SIW_WQE_SIGNALLED = (1 << 2),
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SIW_WQE_SOLICITED = (1 << 3),
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SIW_WQE_READ_FENCE = (1 << 4),
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SIW_WQE_REM_INVAL = (1 << 5),
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SIW_WQE_COMPLETED = (1 << 6)
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};
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/* Send Queue Element */
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struct siw_sqe {
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__aligned_u64 id;
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__u16 flags;
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__u8 num_sge;
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/* Contains enum siw_opcode values */
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__u8 opcode;
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__u32 rkey;
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union {
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__aligned_u64 raddr;
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__aligned_u64 base_mr;
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};
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union {
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struct siw_sge sge[SIW_MAX_SGE];
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__aligned_u64 access;
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};
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};
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/* Receive Queue Element */
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struct siw_rqe {
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__aligned_u64 id;
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__u16 flags;
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__u8 num_sge;
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/*
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* only used by kernel driver,
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* ignored if set by user
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*/
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__u8 opcode;
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__u32 unused;
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struct siw_sge sge[SIW_MAX_SGE];
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};
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enum siw_notify_flags {
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SIW_NOTIFY_NOT = (0),
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SIW_NOTIFY_SOLICITED = (1 << 0),
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SIW_NOTIFY_NEXT_COMPLETION = (1 << 1),
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SIW_NOTIFY_MISSED_EVENTS = (1 << 2),
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SIW_NOTIFY_ALL = SIW_NOTIFY_SOLICITED | SIW_NOTIFY_NEXT_COMPLETION |
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SIW_NOTIFY_MISSED_EVENTS
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};
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enum siw_wc_status {
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SIW_WC_SUCCESS,
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SIW_WC_LOC_LEN_ERR,
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SIW_WC_LOC_PROT_ERR,
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SIW_WC_LOC_QP_OP_ERR,
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SIW_WC_WR_FLUSH_ERR,
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SIW_WC_BAD_RESP_ERR,
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SIW_WC_LOC_ACCESS_ERR,
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SIW_WC_REM_ACCESS_ERR,
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SIW_WC_REM_INV_REQ_ERR,
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SIW_WC_GENERAL_ERR,
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SIW_NUM_WC_STATUS
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};
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struct siw_cqe {
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__aligned_u64 id;
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__u8 flags;
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__u8 opcode;
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__u16 status;
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__u32 bytes;
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union {
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__aligned_u64 imm_data;
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__u32 inval_stag;
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};
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/* QP number or QP pointer */
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union {
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struct ib_qp *base_qp;
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__aligned_u64 qp_id;
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};
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};
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/*
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* Shared structure between user and kernel
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* to control CQ arming.
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*/
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struct siw_cq_ctrl {
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__aligned_u64 notify;
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};
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#endif
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