include/rdma/opa_smi.h

   1 /*
   2  * Copyright (c) 2014 Intel Corporation.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #if !defined(OPA_SMI_H)
  34 #define OPA_SMI_H
  35
  36 #include <rdma/ib_mad.h>
  37 #include <rdma/ib_smi.h>
  38
  39 #define OPA_SMP_LID_DATA_SIZE                   2016
  40 #define OPA_SMP_DR_DATA_SIZE                    1872
  41 #define OPA_SMP_MAX_PATH_HOPS                   64
  42
  43 #define OPA_SMI_CLASS_VERSION                   0x80
  44
  45 #define OPA_LID_PERMISSIVE                      cpu_to_be32(0xFFFFFFFF)
  46
  47 struct opa_smp {
  48         u8      base_version;
  49         u8      mgmt_class;
  50         u8      class_version;
  51         u8      method;
  52         __be16  status;
  53         u8      hop_ptr;
  54         u8      hop_cnt;
  55         __be64  tid;
  56         __be16  attr_id;
  57         __be16  resv;
  58         __be32  attr_mod;
  59         __be64  mkey;
  60         union {
  61                 struct {
  62                         uint8_t data[OPA_SMP_LID_DATA_SIZE];
  63                 } lid;
  64                 struct {
  65                         __be32  dr_slid;
  66                         __be32  dr_dlid;
  67                         u8      initial_path[OPA_SMP_MAX_PATH_HOPS];
  68                         u8      return_path[OPA_SMP_MAX_PATH_HOPS];
  69                         u8      reserved[8];
  70                         u8      data[OPA_SMP_DR_DATA_SIZE];
  71                 } dr;
  72         } route;
  73 } __packed;
  74
  75
  76 static inline u8
  77 opa_get_smp_direction(struct opa_smp *smp)
  78 {
  79         return ib_get_smp_direction((struct ib_smp *)smp);
  80 }
  81
  82 static inline u8 *opa_get_smp_data(struct opa_smp *smp)
  83 {
  84         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
  85                 return smp->route.dr.data;
  86
  87         return smp->route.lid.data;
  88 }
  89
  90 static inline size_t opa_get_smp_data_size(struct opa_smp *smp)
  91 {
  92         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
  93                 return sizeof(smp->route.dr.data);
  94
  95         return sizeof(smp->route.lid.data);
  96 }
  97
  98 static inline size_t opa_get_smp_header_size(struct opa_smp *smp)
  99 {
 100         if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
 101                 return sizeof(*smp) - sizeof(smp->route.dr.data);
 102
 103         return sizeof(*smp) - sizeof(smp->route.lid.data);
 104 }
 105
 106 #endif /* OPA_SMI_H */