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Release 4.16 include/rdma/opa_addr.h

Directory: include/rdma
/*
 * Copyright(c) 2017 Intel Corporation.
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * BSD LICENSE
 *
 * 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.
 *  - Neither the name of Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef OPA_ADDR_H

#define OPA_ADDR_H

#include <rdma/opa_smi.h>


#define	OPA_SPECIAL_OUI		(0x00066AULL)

#define OPA_MAKE_ID(x)          (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x)))

#define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \
                                ? 0 : x)

#define OPA_GID_INDEX		0x1
/**
 * 0xF8 - 4 bits of multicast range and 1 bit for collective range
 * Example: For 24 bit LID space,
 * Multicast range: 0xF00000 to 0xF7FFFF
 * Collective range: 0xF80000 to 0xFFFFFE
 */

#define OPA_MCAST_NR 0x4 
/* Number of top bits set */

#define OPA_COLLECTIVE_NR 0x1 
/* Number of bits after MCAST_NR */

/**
 * ib_is_opa_gid: Returns true if the top 24 bits of the gid
 * contains the OPA_STL_OUI identifier. This identifies that
 * the provided gid is a special purpose GID meant to carry
 * extended LID information.
 *
 * @gid: The Global identifier
 */

static inline bool ib_is_opa_gid(const union ib_gid *gid) { return ((be64_to_cpu(gid->global.interface_id) >> 40) == OPA_SPECIAL_OUI); }

Contributors

PersonTokensPropCommitsCommitProp
Doug Ledford3096.77%150.00%
Don Hiatt13.23%150.00%
Total31100.00%2100.00%

/** * opa_get_lid_from_gid: Returns the last 32 bits of the gid. * OPA devices use one of the gids in the gid table to also * store the lid. * * @gid: The Global identifier */
static inline u32 opa_get_lid_from_gid(const union ib_gid *gid) { return be64_to_cpu(gid->global.interface_id) & 0xFFFFFFFF; }

Contributors

PersonTokensPropCommitsCommitProp
Doug Ledford2496.00%150.00%
Don Hiatt14.00%150.00%
Total25100.00%2100.00%

/** * opa_is_extended_lid: Returns true if dlid or slid are * extended. * * @dlid: The DLID * @slid: The SLID */
static inline bool opa_is_extended_lid(__be32 dlid, __be32 slid) { if ((be32_to_cpu(dlid) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) || (be32_to_cpu(slid) >= be16_to_cpu(IB_MULTICAST_LID_BASE))) return true; return false; }

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PersonTokensPropCommitsCommitProp
Don Hiatt45100.00%2100.00%
Total45100.00%2100.00%

/* Get multicast lid base */
static inline u32 opa_get_mcast_base(u32 nr_top_bits) { return (be32_to_cpu(OPA_LID_PERMISSIVE) << (32 - nr_top_bits)); }

Contributors

PersonTokensPropCommitsCommitProp
Don Hiatt24100.00%1100.00%
Total24100.00%1100.00%

/* Check for a valid unicast LID for non-SM traffic types */
static inline bool rdma_is_valid_unicast_lid(struct rdma_ah_attr *attr) { if (attr->type == RDMA_AH_ATTR_TYPE_IB) { if (!rdma_ah_get_dlid(attr) || rdma_ah_get_dlid(attr) >= be32_to_cpu(IB_MULTICAST_LID_BASE)) return false; } else if (attr->type == RDMA_AH_ATTR_TYPE_OPA) { if (!rdma_ah_get_dlid(attr) || rdma_ah_get_dlid(attr) >= opa_get_mcast_base(OPA_MCAST_NR)) return false; } return true; }

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Venkata Sandeep Dhanalakota78100.00%1100.00%
Total78100.00%1100.00%

#endif /* OPA_ADDR_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Don Hiatt9135.83%562.50%
Venkata Sandeep Dhanalakota7931.10%112.50%
Doug Ledford7730.31%112.50%
Dasaratharaman Chandramouli72.76%112.50%
Total254100.00%8100.00%
Directory: include/rdma
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