projects / mirror_ubuntu-artful-kernel.git / blame
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|---|---|---|
| 87f0faad DL |
1 | /* |
| 2 | * Copyright(c) 2017 Intel Corporation. | |
| 3 | * | |
| 4 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
| 5 | * redistributing this file, you may do so under either license. | |
| 6 | * | |
| 7 | * GPL LICENSE SUMMARY | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of version 2 of the GNU General Public License as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, but | |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 | * General Public License for more details. | |
| 17 | * | |
| 18 | * BSD LICENSE | |
| 19 | * | |
| 20 | * Redistribution and use in source and binary forms, with or without | |
| 21 | * modification, are permitted provided that the following conditions | |
| 22 | * are met: | |
| 23 | * | |
| 24 | * - Redistributions of source code must retain the above copyright | |
| 25 | * notice, this list of conditions and the following disclaimer. | |
| 26 | * - Redistributions in binary form must reproduce the above copyright | |
| 27 | * notice, this list of conditions and the following disclaimer in | |
| 28 | * the documentation and/or other materials provided with the | |
| 29 | * distribution. | |
| 30 | * - Neither the name of Intel Corporation nor the names of its | |
| 31 | * contributors may be used to endorse or promote products derived | |
| 32 | * from this software without specific prior written permission. | |
| 33 | * | |
| 34 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 35 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 36 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 37 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 38 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 39 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 40 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 41 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 42 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 43 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 45 | * | |
| 46 | */ | |
| 47 | ||
| 48 | #ifndef OPA_ADDR_H | |
| 49 | #define OPA_ADDR_H | |
| 50 | ||
| 51 | #define OPA_SPECIAL_OUI (0x00066AULL) | |
| 52 | #define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x))) | |
| 53 | ||
| 54 | /** | |
| 55 | * ib_is_opa_gid: Returns true if the top 24 bits of the gid | |
| 56 | * contains the OPA_STL_OUI identifier. This identifies that | |
| 57 | * the provided gid is a special purpose GID meant to carry | |
| 58 | * extended LID information. | |
| 59 | * | |
| 60 | * @gid: The Global identifier | |
| 61 | */ | |
| 62 | static inline bool ib_is_opa_gid(union ib_gid *gid) | |
| 63 | { | |
| 64 | return ((be64_to_cpu(gid->global.interface_id) >> 40) == | |
| 65 | OPA_SPECIAL_OUI); | |
| 66 | } | |
| 67 | ||
| 68 | /** | |
| 69 | * opa_get_lid_from_gid: Returns the last 32 bits of the gid. | |
| 70 | * OPA devices use one of the gids in the gid table to also | |
| 71 | * store the lid. | |
| 72 | * | |
| 73 | * @gid: The Global identifier | |
| 74 | */ | |
| 75 | static inline u32 opa_get_lid_from_gid(union ib_gid *gid) | |
| 76 | { | |
| 77 | return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF; | |
| 78 | } | |
| 79 | #endif /* OPA_ADDR_H */ |