linux/include/rdma/ib_cache.h
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   1/*
   2 * Copyright (c) 2004 Topspin Communications.  All rights reserved.
   3 * Copyright (c) 2005 Intel Corporation. All rights reserved.
   4 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   5 *
   6 * This software is available to you under a choice of one of two
   7 * licenses.  You may choose to be licensed under the terms of the GNU
   8 * General Public License (GPL) Version 2, available from the file
   9 * COPYING in the main directory of this source tree, or the
  10 * OpenIB.org BSD license below:
  11 *
  12 *     Redistribution and use in source and binary forms, with or
  13 *     without modification, are permitted provided that the following
  14 *     conditions are met:
  15 *
  16 *      - Redistributions of source code must retain the above
  17 *        copyright notice, this list of conditions and the following
  18 *        disclaimer.
  19 *
  20 *      - Redistributions in binary form must reproduce the above
  21 *        copyright notice, this list of conditions and the following
  22 *        disclaimer in the documentation and/or other materials
  23 *        provided with the distribution.
  24 *
  25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32 * SOFTWARE.
  33 */
  34
  35#ifndef _IB_CACHE_H
  36#define _IB_CACHE_H
  37
  38#include <rdma/ib_verbs.h>
  39
  40/**
  41 * ib_get_cached_gid - Returns a cached GID table entry
  42 * @device: The device to query.
  43 * @port_num: The port number of the device to query.
  44 * @index: The index into the cached GID table to query.
  45 * @gid: The GID value found at the specified index.
  46 *
  47 * ib_get_cached_gid() fetches the specified GID table entry stored in
  48 * the local software cache.
  49 */
  50int ib_get_cached_gid(struct ib_device    *device,
  51                      u8                   port_num,
  52                      int                  index,
  53                      union ib_gid        *gid);
  54
  55/**
  56 * ib_find_cached_gid - Returns the port number and GID table index where
  57 *   a specified GID value occurs.
  58 * @device: The device to query.
  59 * @gid: The GID value to search for.
  60 * @port_num: The port number of the device where the GID value was found.
  61 * @index: The index into the cached GID table where the GID was found.  This
  62 *   parameter may be NULL.
  63 *
  64 * ib_find_cached_gid() searches for the specified GID value in
  65 * the local software cache.
  66 */
  67int ib_find_cached_gid(struct ib_device *device,
  68                       union ib_gid     *gid,
  69                       u8               *port_num,
  70                       u16              *index);
  71
  72/**
  73 * ib_get_cached_pkey - Returns a cached PKey table entry
  74 * @device: The device to query.
  75 * @port_num: The port number of the device to query.
  76 * @index: The index into the cached PKey table to query.
  77 * @pkey: The PKey value found at the specified index.
  78 *
  79 * ib_get_cached_pkey() fetches the specified PKey table entry stored in
  80 * the local software cache.
  81 */
  82int ib_get_cached_pkey(struct ib_device    *device_handle,
  83                       u8                   port_num,
  84                       int                  index,
  85                       u16                 *pkey);
  86
  87/**
  88 * ib_find_cached_pkey - Returns the PKey table index where a specified
  89 *   PKey value occurs.
  90 * @device: The device to query.
  91 * @port_num: The port number of the device to search for the PKey.
  92 * @pkey: The PKey value to search for.
  93 * @index: The index into the cached PKey table where the PKey was found.
  94 *
  95 * ib_find_cached_pkey() searches the specified PKey table in
  96 * the local software cache.
  97 */
  98int ib_find_cached_pkey(struct ib_device    *device,
  99                        u8                   port_num,
 100                        u16                  pkey,
 101                        u16                 *index);
 102
 103/**
 104 * ib_find_exact_cached_pkey - Returns the PKey table index where a specified
 105 *   PKey value occurs. Comparison uses the FULL 16 bits (incl membership bit)
 106 * @device: The device to query.
 107 * @port_num: The port number of the device to search for the PKey.
 108 * @pkey: The PKey value to search for.
 109 * @index: The index into the cached PKey table where the PKey was found.
 110 *
 111 * ib_find_exact_cached_pkey() searches the specified PKey table in
 112 * the local software cache.
 113 */
 114int ib_find_exact_cached_pkey(struct ib_device    *device,
 115                              u8                   port_num,
 116                              u16                  pkey,
 117                              u16                 *index);
 118
 119/**
 120 * ib_get_cached_lmc - Returns a cached lmc table entry
 121 * @device: The device to query.
 122 * @port_num: The port number of the device to query.
 123 * @lmc: The lmc value for the specified port for that device.
 124 *
 125 * ib_get_cached_lmc() fetches the specified lmc table entry stored in
 126 * the local software cache.
 127 */
 128int ib_get_cached_lmc(struct ib_device *device,
 129                      u8                port_num,
 130                      u8                *lmc);
 131
 132#endif /* _IB_CACHE_H */
 133
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