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73aaa7418f
When P_Key tables potentially contain both full and partial membership copies for the same P_Key, we need a function to find the index for an exact (16-bit) P_Key. This is necessary when the master forwards QP1 MADs sent by guests. If the guest has sent the MAD with a limited membership P_Key, we need to to forward the MAD using the same limited membership P_Key. Since the master may have both the limited and the full member P_Keys in its table, we must make sure to retrieve the limited membership P_Key in this case. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
133 lines
4.9 KiB
C
133 lines
4.9 KiB
C
/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Intel Corporation. All rights reserved.
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _IB_CACHE_H
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#define _IB_CACHE_H
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#include <rdma/ib_verbs.h>
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/**
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* ib_get_cached_gid - Returns a cached GID table entry
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* @device: The device to query.
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* @port_num: The port number of the device to query.
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* @index: The index into the cached GID table to query.
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* @gid: The GID value found at the specified index.
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*
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* ib_get_cached_gid() fetches the specified GID table entry stored in
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* the local software cache.
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*/
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int ib_get_cached_gid(struct ib_device *device,
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u8 port_num,
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int index,
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union ib_gid *gid);
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/**
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* ib_find_cached_gid - Returns the port number and GID table index where
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* a specified GID value occurs.
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* @device: The device to query.
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* @gid: The GID value to search for.
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* @port_num: The port number of the device where the GID value was found.
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* @index: The index into the cached GID table where the GID was found. This
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* parameter may be NULL.
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*
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* ib_find_cached_gid() searches for the specified GID value in
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* the local software cache.
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*/
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int ib_find_cached_gid(struct ib_device *device,
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union ib_gid *gid,
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u8 *port_num,
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u16 *index);
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/**
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* ib_get_cached_pkey - Returns a cached PKey table entry
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* @device: The device to query.
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* @port_num: The port number of the device to query.
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* @index: The index into the cached PKey table to query.
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* @pkey: The PKey value found at the specified index.
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*
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* ib_get_cached_pkey() fetches the specified PKey table entry stored in
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* the local software cache.
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*/
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int ib_get_cached_pkey(struct ib_device *device_handle,
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u8 port_num,
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int index,
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u16 *pkey);
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/**
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* ib_find_cached_pkey - Returns the PKey table index where a specified
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* PKey value occurs.
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* @device: The device to query.
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* @port_num: The port number of the device to search for the PKey.
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* @pkey: The PKey value to search for.
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* @index: The index into the cached PKey table where the PKey was found.
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*
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* ib_find_cached_pkey() searches the specified PKey table in
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* the local software cache.
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*/
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int ib_find_cached_pkey(struct ib_device *device,
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u8 port_num,
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u16 pkey,
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u16 *index);
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/**
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* ib_find_exact_cached_pkey - Returns the PKey table index where a specified
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* PKey value occurs. Comparison uses the FULL 16 bits (incl membership bit)
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* @device: The device to query.
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* @port_num: The port number of the device to search for the PKey.
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* @pkey: The PKey value to search for.
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* @index: The index into the cached PKey table where the PKey was found.
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*
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* ib_find_exact_cached_pkey() searches the specified PKey table in
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* the local software cache.
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*/
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int ib_find_exact_cached_pkey(struct ib_device *device,
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u8 port_num,
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u16 pkey,
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u16 *index);
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/**
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* ib_get_cached_lmc - Returns a cached lmc table entry
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* @device: The device to query.
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* @port_num: The port number of the device to query.
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* @lmc: The lmc value for the specified port for that device.
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*
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* ib_get_cached_lmc() fetches the specified lmc table entry stored in
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* the local software cache.
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*/
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int ib_get_cached_lmc(struct ib_device *device,
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u8 port_num,
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u8 *lmc);
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#endif /* _IB_CACHE_H */
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