666e8ff535
Query the device attributes for RDMA operations, including maximum transfer size and maximum number of SGEs per RDMA WR, and report them back to the userspace library. Link: https://lore.kernel.org/r/20191121141509.59297-4-galpress@amazon.com Signed-off-by: Daniel Kranzdorf <dkkranzd@amazon.com> Reviewed-by: Yossi Leybovich <sleybo@amazon.com> Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
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/*
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* Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
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*/
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#ifndef EFA_ABI_USER_H
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#define EFA_ABI_USER_H
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#include <linux/types.h>
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/*
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* Increment this value if any changes that break userspace ABI
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* compatibility are made.
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*/
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#define EFA_UVERBS_ABI_VERSION 1
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/*
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* Keep structs aligned to 8 bytes.
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* Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the
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* hex bit offset of the field.
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*/
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enum efa_ibv_user_cmds_supp_udata {
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EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,
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EFA_USER_CMDS_SUPP_UDATA_CREATE_AH = 1 << 1,
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};
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struct efa_ibv_alloc_ucontext_resp {
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__u32 comp_mask;
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__u32 cmds_supp_udata_mask;
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__u16 sub_cqs_per_cq;
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__u16 inline_buf_size;
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__u32 max_llq_size; /* bytes */
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};
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struct efa_ibv_alloc_pd_resp {
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__u32 comp_mask;
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__u16 pdn;
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__u8 reserved_30[2];
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};
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struct efa_ibv_create_cq {
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__u32 comp_mask;
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__u32 cq_entry_size;
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__u16 num_sub_cqs;
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__u8 reserved_50[6];
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};
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struct efa_ibv_create_cq_resp {
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__u32 comp_mask;
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__u8 reserved_20[4];
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__aligned_u64 q_mmap_key;
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__aligned_u64 q_mmap_size;
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__u16 cq_idx;
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__u8 reserved_d0[6];
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};
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enum {
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EFA_QP_DRIVER_TYPE_SRD = 0,
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};
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struct efa_ibv_create_qp {
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__u32 comp_mask;
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__u32 rq_ring_size; /* bytes */
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__u32 sq_ring_size; /* bytes */
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__u32 driver_qp_type;
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};
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struct efa_ibv_create_qp_resp {
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__u32 comp_mask;
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/* the offset inside the page of the rq db */
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__u32 rq_db_offset;
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/* the offset inside the page of the sq db */
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__u32 sq_db_offset;
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/* the offset inside the page of descriptors buffer */
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__u32 llq_desc_offset;
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__aligned_u64 rq_mmap_key;
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__aligned_u64 rq_mmap_size;
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__aligned_u64 rq_db_mmap_key;
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__aligned_u64 sq_db_mmap_key;
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__aligned_u64 llq_desc_mmap_key;
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__u16 send_sub_cq_idx;
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__u16 recv_sub_cq_idx;
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__u8 reserved_1e0[4];
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};
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struct efa_ibv_create_ah_resp {
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__u32 comp_mask;
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__u16 efa_address_handle;
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__u8 reserved_30[2];
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};
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enum {
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EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0,
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};
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struct efa_ibv_ex_query_device_resp {
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__u32 comp_mask;
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__u32 max_sq_wr;
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__u32 max_rq_wr;
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__u16 max_sq_sge;
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__u16 max_rq_sge;
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__u32 max_rdma_size;
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__u32 device_caps;
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};
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#endif /* EFA_ABI_USER_H */
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