kernel-headers/rdma/mana-abi.h

/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */
/*
 * Copyright (c) 2022, Microsoft Corporation. All rights reserved.
 */

#ifndef MANA_ABI_USER_H
#define MANA_ABI_USER_H

#include <linux/types.h>
#include <rdma/ib_user_ioctl_verbs.h>

/*
 * Increment this value if any changes that break userspace ABI
 * compatibility are made.
 */

#define MANA_IB_UVERBS_ABI_VERSION 1

enum mana_ib_create_cq_flags {
	/* Reserved for backward compatibility. Legacy
	 * kernel versions use it to create CQs in RNIC
	 */
	MANA_IB_CREATE_RNIC_CQ	= 1 << 0,
};

struct mana_ib_create_cq {
	__aligned_u64 buf_addr;
	__u16	comp_mask;
	__u16	reserved0;
	__u32	reserved1;
};

struct mana_ib_create_cq_resp {
	__u32 cqid;
	__u32 reserved;
};

struct mana_ib_create_qp {
	__aligned_u64 sq_buf_addr;
	__u32 sq_buf_size;
	__u32 port;
};

struct mana_ib_create_qp_resp {
	__u32 sqid;
	__u32 cqid;
	__u32 tx_vp_offset;
	__u32 reserved;
};

struct mana_ib_create_rc_qp {
	__aligned_u64 queue_buf[4];
	__u32 queue_size[4];
};

struct mana_ib_create_rc_qp_resp {
	__u32 queue_id[4];
};

struct mana_ib_create_uc_qp {
	__aligned_u64 queue_buf[3];
	__u32 queue_size[3];
	__u32 comp_mask;
};

struct mana_ib_create_uc_qp_resp {
	__u32 queue_id[3];
	__u32 reserved;
};

struct mana_ib_create_wq {
	__aligned_u64 wq_buf_addr;
	__u32 wq_buf_size;
	__u32 reserved;
};

/* RX Hash function flags */
enum mana_ib_rx_hash_function_flags {
	MANA_IB_RX_HASH_FUNC_TOEPLITZ = 1 << 0,
};

struct mana_ib_create_qp_rss {
	__aligned_u64 rx_hash_fields_mask;
	__u8 rx_hash_function;
	__u8 reserved[7];
	__u32 rx_hash_key_len;
	__u8 rx_hash_key[40];
	__u32 port;
};

struct rss_resp_entry {
	__u32 cqid;
	__u32 wqid;
};

struct mana_ib_create_qp_rss_resp {
	__aligned_u64 num_entries;
	struct rss_resp_entry entries[64];
};

enum mana_ib_ucontext_support {
	MANA_IB_UCNTX_ALLOC_PDN_SUPPORT = 1 << 0,
};

struct mana_ib_alloc_ucontext_resp {
	__aligned_u64 comp_mask;
};

enum mana_ib_create_pd_flags {
	MANA_IB_PD_SHORT_PDN = 1 << 0,
};

struct mana_ib_alloc_pd {
	__u32 comp_mask;
	__u32 reserved;
};

struct mana_ib_alloc_pd_resp {
	__u32 pdn;
	__u32 reserved;
};

#endif