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kernel/linux-imx6_3.14.28/include/rdma/ib_cache.h 4.88 KB
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  /*
   * Copyright (c) 2004 Topspin Communications.  All rights reserved.
   * Copyright (c) 2005 Intel Corporation. All rights reserved.
   * Copyright (c) 2005 Sun Microsystems, Inc. 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
   * OpenIB.org 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 _IB_CACHE_H
  #define _IB_CACHE_H
  
  #include <rdma/ib_verbs.h>
  
  /**
   * ib_get_cached_gid - Returns a cached GID table entry
   * @device: The device to query.
   * @port_num: The port number of the device to query.
   * @index: The index into the cached GID table to query.
   * @gid: The GID value found at the specified index.
   *
   * ib_get_cached_gid() fetches the specified GID table entry stored in
   * the local software cache.
   */
  int ib_get_cached_gid(struct ib_device    *device,
  		      u8                   port_num,
  		      int                  index,
  		      union ib_gid        *gid);
  
  /**
   * ib_find_cached_gid - Returns the port number and GID table index where
   *   a specified GID value occurs.
   * @device: The device to query.
   * @gid: The GID value to search for.
   * @port_num: The port number of the device where the GID value was found.
   * @index: The index into the cached GID table where the GID was found.  This
   *   parameter may be NULL.
   *
   * ib_find_cached_gid() searches for the specified GID value in
   * the local software cache.
   */
  int ib_find_cached_gid(struct ib_device *device,
  		       union ib_gid	*gid,
  		       u8               *port_num,
  		       u16              *index);
  
  /**
   * ib_get_cached_pkey - Returns a cached PKey table entry
   * @device: The device to query.
   * @port_num: The port number of the device to query.
   * @index: The index into the cached PKey table to query.
   * @pkey: The PKey value found at the specified index.
   *
   * ib_get_cached_pkey() fetches the specified PKey table entry stored in
   * the local software cache.
   */
  int ib_get_cached_pkey(struct ib_device    *device_handle,
  		       u8                   port_num,
  		       int                  index,
  		       u16                 *pkey);
  
  /**
   * ib_find_cached_pkey - Returns the PKey table index where a specified
   *   PKey value occurs.
   * @device: The device to query.
   * @port_num: The port number of the device to search for the PKey.
   * @pkey: The PKey value to search for.
   * @index: The index into the cached PKey table where the PKey was found.
   *
   * ib_find_cached_pkey() searches the specified PKey table in
   * the local software cache.
   */
  int ib_find_cached_pkey(struct ib_device    *device,
  			u8                   port_num,
  			u16                  pkey,
  			u16                 *index);
  
  /**
   * ib_find_exact_cached_pkey - Returns the PKey table index where a specified
   *   PKey value occurs. Comparison uses the FULL 16 bits (incl membership bit)
   * @device: The device to query.
   * @port_num: The port number of the device to search for the PKey.
   * @pkey: The PKey value to search for.
   * @index: The index into the cached PKey table where the PKey was found.
   *
   * ib_find_exact_cached_pkey() searches the specified PKey table in
   * the local software cache.
   */
  int ib_find_exact_cached_pkey(struct ib_device    *device,
  			      u8                   port_num,
  			      u16                  pkey,
  			      u16                 *index);
  
  /**
   * ib_get_cached_lmc - Returns a cached lmc table entry
   * @device: The device to query.
   * @port_num: The port number of the device to query.
   * @lmc: The lmc value for the specified port for that device.
   *
   * ib_get_cached_lmc() fetches the specified lmc table entry stored in
   * the local software cache.
   */
  int ib_get_cached_lmc(struct ib_device *device,
  		      u8                port_num,
  		      u8                *lmc);
  
  #endif /* _IB_CACHE_H */