RDMA/efa: Add the ABI definitions

/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */

/*

 * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.

 */

#ifndef EFA_ABI_USER_H

#define EFA_ABI_USER_H

#include <linux/types.h>

/*

 * Increment this value if any changes that break userspace ABI

 * compatibility are made.

 */

#define EFA_UVERBS_ABI_VERSION 1

/*

 * Keep structs aligned to 8 bytes.

 * Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the

 * hex bit offset of the field.

 */

enum efa_ibv_user_cmds_supp_udata {

	EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,

	EFA_USER_CMDS_SUPP_UDATA_CREATE_AH    = 1 << 1,

};

struct efa_ibv_alloc_ucontext_resp {

	__u32 comp_mask;

	__u32 cmds_supp_udata_mask;

	__u16 sub_cqs_per_cq;

	__u16 inline_buf_size;

	__u32 max_llq_size; /* bytes */

};

struct efa_ibv_alloc_pd_resp {

	__u32 comp_mask;

	__u16 pdn;

	__u8 reserved_30[2];

};

struct efa_ibv_create_cq {

	__u32 comp_mask;

	__u32 cq_entry_size;

	__u16 num_sub_cqs;

	__u8 reserved_50[6];

};

struct efa_ibv_create_cq_resp {

	__u32 comp_mask;

	__u8 reserved_20[4];

	__aligned_u64 q_mmap_key;

	__aligned_u64 q_mmap_size;

	__u16 cq_idx;

	__u8 reserved_d0[6];

};

enum {

	EFA_QP_DRIVER_TYPE_SRD = 0,

};

struct efa_ibv_create_qp {

	__u32 comp_mask;

	__u32 rq_ring_size; /* bytes */

	__u32 sq_ring_size; /* bytes */

	__u32 driver_qp_type;

};

struct efa_ibv_create_qp_resp {

	__u32 comp_mask;

	/* the offset inside the page of the rq db */

	__u32 rq_db_offset;

	/* the offset inside the page of the sq db */

	__u32 sq_db_offset;

	/* the offset inside the page of descriptors buffer */

	__u32 llq_desc_offset;

	__aligned_u64 rq_mmap_key;

	__aligned_u64 rq_mmap_size;

	__aligned_u64 rq_db_mmap_key;

	__aligned_u64 sq_db_mmap_key;

	__aligned_u64 llq_desc_mmap_key;

	__u16 send_sub_cq_idx;

	__u16 recv_sub_cq_idx;

	__u8 reserved_1e0[4];

};

struct efa_ibv_create_ah_resp {

	__u32 comp_mask;

	__u16 efa_address_handle;

	__u8 reserved_30[2];

};

struct efa_ibv_ex_query_device_resp {

	__u32 comp_mask;

	__u32 max_sq_wr;

	__u32 max_rq_wr;

	__u16 max_sq_sge;

	__u16 max_rq_sge;

};

#endif /* EFA_ABI_USER_H */