LXR linux/include/uapi/rdma/efa-abi.h

   1/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
   2/*
   3 * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
   4 */
   5
   6#ifndef EFA_ABI_USER_H
   7#define EFA_ABI_USER_H
   8
   9#include <linux/types.h>
  10
  11/*
  12 * Increment this value if any changes that break userspace ABI
  13 * compatibility are made.
  14 */
  15#define EFA_UVERBS_ABI_VERSION 1
  16
  17/*
  18 * Keep structs aligned to 8 bytes.
  19 * Keep reserved fields as arrays of __u8 named reserved_XXX where XXX is the
  20 * hex bit offset of the field.
  21 */
  22
  23enum efa_ibv_user_cmds_supp_udata {
  24        EFA_USER_CMDS_SUPP_UDATA_QUERY_DEVICE = 1 << 0,
  25        EFA_USER_CMDS_SUPP_UDATA_CREATE_AH    = 1 << 1,
  26};
  27
  28struct efa_ibv_alloc_ucontext_resp {
  29        __u32 comp_mask;
  30        __u32 cmds_supp_udata_mask;
  31        __u16 sub_cqs_per_cq;
  32        __u16 inline_buf_size;
  33        __u32 max_llq_size; /* bytes */
  34};
  35
  36struct efa_ibv_alloc_pd_resp {
  37        __u32 comp_mask;
  38        __u16 pdn;
  39        __u8 reserved_30[2];
  40};
  41
  42struct efa_ibv_create_cq {
  43        __u32 comp_mask;
  44        __u32 cq_entry_size;
  45        __u16 num_sub_cqs;
  46        __u8 reserved_50[6];
  47};
  48
  49struct efa_ibv_create_cq_resp {
  50        __u32 comp_mask;
  51        __u8 reserved_20[4];
  52        __aligned_u64 q_mmap_key;
  53        __aligned_u64 q_mmap_size;
  54        __u16 cq_idx;
  55        __u8 reserved_d0[6];
  56};
  57
  58enum {
  59        EFA_QP_DRIVER_TYPE_SRD = 0,
  60};
  61
  62struct efa_ibv_create_qp {
  63        __u32 comp_mask;
  64        __u32 rq_ring_size; /* bytes */
  65        __u32 sq_ring_size; /* bytes */
  66        __u32 driver_qp_type;
  67};
  68
  69struct efa_ibv_create_qp_resp {
  70        __u32 comp_mask;
  71        /* the offset inside the page of the rq db */
  72        __u32 rq_db_offset;
  73        /* the offset inside the page of the sq db */
  74        __u32 sq_db_offset;
  75        /* the offset inside the page of descriptors buffer */
  76        __u32 llq_desc_offset;
  77        __aligned_u64 rq_mmap_key;
  78        __aligned_u64 rq_mmap_size;
  79        __aligned_u64 rq_db_mmap_key;
  80        __aligned_u64 sq_db_mmap_key;
  81        __aligned_u64 llq_desc_mmap_key;
  82        __u16 send_sub_cq_idx;
  83        __u16 recv_sub_cq_idx;
  84        __u8 reserved_1e0[4];
  85};
  86
  87struct efa_ibv_create_ah_resp {
  88        __u32 comp_mask;
  89        __u16 efa_address_handle;
  90        __u8 reserved_30[2];
  91};
  92
  93struct efa_ibv_ex_query_device_resp {
  94        __u32 comp_mask;
  95        __u32 max_sq_wr;
  96        __u32 max_rq_wr;
  97        __u16 max_sq_sge;
  98        __u16 max_rq_sge;
  99};
 100
 101#endif /* EFA_ABI_USER_H */
 102