On 2/21/2019 9:33 AM, Gal Pressman wrote:
> Add the EFA ABI file exposed to userspace.
>
> Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
> ---
> include/uapi/rdma/efa-abi.h | 129 ++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 129 insertions(+)
> create mode 100644 include/uapi/rdma/efa-abi.h
>
> diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h
> new file mode 100644
> index 000000000000..a97373cdfbd2
> --- /dev/null
> +++ b/include/uapi/rdma/efa-abi.h
> @@ -0,0 +1,129 @@
> +/* 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.
> + *
> + * This software is available to you under a choice of one of two
> + * licenses. You may choose to be licensed under the terms of the GNU
> + * General Public License (GPL) Version 2, available from the file
> + * COPYING in the main directory of this source tree, or the
> + * BSD license below:
> + *
> + * Redistribution and use in source and binary forms, with or
> + * without modification, are permitted provided that the following
> + * conditions are met:
> + *
> + * - Redistributions of source code must retain the above
> + * copyright notice, this list of conditions and the following
> + * disclaimer.
> + *
> + * - Redistributions in binary form must reproduce the above
> + * copyright notice, this list of conditions and the following
> + * disclaimer in the documentation and/or other materials
> + * provided with the distribution.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> + * SOFTWARE.
> + */
> +
> +#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[0x2];
> +};
> +
> +struct efa_ibv_create_cq {
> + __u32 comp_mask;
> + __u32 cq_entry_size;
> + __u16 num_sub_cqs;
> + __u8 reserved_50[0x6];
Why use hex for the array depth in these reserved bytes?
> +};
> +
> +struct efa_ibv_create_cq_resp {
> + __u32 comp_mask;
> + __u8 reserved_20[0x4];
> + __aligned_u64 q_mmap_key;
> + __aligned_u64 q_mmap_size;
> + __u16 cq_idx;
> + __u8 reserved_d0[0x6];
> +};
> +
> +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[0x4];
> +};
> +
> +struct efa_ibv_create_ah_resp {
> + __u32 comp_mask;
> + __u16 efa_address_handle;
> + __u8 reserved_30[0x2];
> +};
> +
> +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 */
Reviewed-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
