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186 lines
3.3 KiB
186 lines
3.3 KiB
/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) or BSD-3-Clause */ |
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/* Authors: Bernard Metzler <[email protected]> */ |
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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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__u32 flags; |
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__u32 pad; |
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}; |
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#endif
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