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TOMOYO Linux Cross Reference
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  * @attr: The GID attribute found at the specified index (only in RoCE).
 47  *   NULL means ignore (output parameter).
 48  *
 49  * ib_get_cached_gid() fetches the specified GID table entry stored in
 50  * the local software cache.
 51  */
 52 int ib_get_cached_gid(struct ib_device    *device,
 53                       u8                   port_num,
 54                       int                  index,
 55                       union ib_gid        *gid,
 56                       struct ib_gid_attr  *attr);
 57 
 58 /**
 59  * ib_find_cached_gid - Returns the port number and GID table index where
 60  *   a specified GID value occurs.
 61  * @device: The device to query.
 62  * @gid: The GID value to search for.
 63  * @gid_type: The GID type to search for.
 64  * @ndev: In RoCE, the net device of the device. NULL means ignore.
 65  * @port_num: The port number of the device where the GID value was found.
 66  * @index: The index into the cached GID table where the GID was found.  This
 67  *   parameter may be NULL.
 68  *
 69  * ib_find_cached_gid() searches for the specified GID value in
 70  * the local software cache.
 71  */
 72 int ib_find_cached_gid(struct ib_device *device,
 73                        const union ib_gid *gid,
 74                        enum ib_gid_type gid_type,
 75                        struct net_device *ndev,
 76                        u8               *port_num,
 77                        u16              *index);
 78 
 79 /**
 80  * ib_find_cached_gid_by_port - Returns the GID table index where a specified
 81  * GID value occurs
 82  * @device: The device to query.
 83  * @gid: The GID value to search for.
 84  * @gid_type: The GID type to search for.
 85  * @port_num: The port number of the device where the GID value sould be
 86  *   searched.
 87  * @ndev: In RoCE, the net device of the device. Null means ignore.
 88  * @index: The index into the cached GID table where the GID was found.  This
 89  *   parameter may be NULL.
 90  *
 91  * ib_find_cached_gid() searches for the specified GID value in
 92  * the local software cache.
 93  */
 94 int ib_find_cached_gid_by_port(struct ib_device *device,
 95                                const union ib_gid *gid,
 96                                enum ib_gid_type gid_type,
 97                                u8               port_num,
 98                                struct net_device *ndev,
 99                                u16              *index);
100 
101 int ib_find_gid_by_filter(struct ib_device *device,
102                           const union ib_gid *gid,
103                           u8 port_num,
104                           bool (*filter)(const union ib_gid *gid,
105                                          const struct ib_gid_attr *,
106                                          void *),
107                           void *context, u16 *index);
108 /**
109  * ib_get_cached_pkey - Returns a cached PKey table entry
110  * @device: The device to query.
111  * @port_num: The port number of the device to query.
112  * @index: The index into the cached PKey table to query.
113  * @pkey: The PKey value found at the specified index.
114  *
115  * ib_get_cached_pkey() fetches the specified PKey table entry stored in
116  * the local software cache.
117  */
118 int ib_get_cached_pkey(struct ib_device    *device_handle,
119                        u8                   port_num,
120                        int                  index,
121                        u16                 *pkey);
122 
123 /**
124  * ib_find_cached_pkey - Returns the PKey table index where a specified
125  *   PKey value occurs.
126  * @device: The device to query.
127  * @port_num: The port number of the device to search for the PKey.
128  * @pkey: The PKey value to search for.
129  * @index: The index into the cached PKey table where the PKey was found.
130  *
131  * ib_find_cached_pkey() searches the specified PKey table in
132  * the local software cache.
133  */
134 int ib_find_cached_pkey(struct ib_device    *device,
135                         u8                   port_num,
136                         u16                  pkey,
137                         u16                 *index);
138 
139 /**
140  * ib_find_exact_cached_pkey - Returns the PKey table index where a specified
141  *   PKey value occurs. Comparison uses the FULL 16 bits (incl membership bit)
142  * @device: The device to query.
143  * @port_num: The port number of the device to search for the PKey.
144  * @pkey: The PKey value to search for.
145  * @index: The index into the cached PKey table where the PKey was found.
146  *
147  * ib_find_exact_cached_pkey() searches the specified PKey table in
148  * the local software cache.
149  */
150 int ib_find_exact_cached_pkey(struct ib_device    *device,
151                               u8                   port_num,
152                               u16                  pkey,
153                               u16                 *index);
154 
155 /**
156  * ib_get_cached_lmc - Returns a cached lmc table entry
157  * @device: The device to query.
158  * @port_num: The port number of the device to query.
159  * @lmc: The lmc value for the specified port for that device.
160  *
161  * ib_get_cached_lmc() fetches the specified lmc table entry stored in
162  * the local software cache.
163  */
164 int ib_get_cached_lmc(struct ib_device *device,
165                       u8                port_num,
166                       u8                *lmc);
167 
168 #endif /* _IB_CACHE_H */
169 

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