/* 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