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📁 ..
📄 agent.h(2.19 KB)
📄 cm_msgs.h(21.43 KB)
📄 core_priv.h(4.43 KB)
📄 ib_addr.c(21.41 KB)
📄 ib_agent.c(6.5 KB)
📄 ib_cache.c(31.74 KB)
📄 ib_cm.c(115.46 KB)
📄 ib_cma.c(117.37 KB)
📄 ib_cq.c(3.86 KB)
📄 ib_device.c(28.45 KB)
📄 ib_fmr_pool.c(13.67 KB)
📄 ib_iwcm.c(29.04 KB)
📄 ib_iwpm_msg.c(1.71 KB)
📄 ib_iwpm_util.c(3.31 KB)
📄 ib_mad.c(93.9 KB)
📄 ib_mad_rmpp.c(27.7 KB)
📄 ib_multicast.c(23 KB)
📄 ib_packer.c(6.42 KB)
📄 ib_roce_gid_mgmt.c(11.79 KB)
📄 ib_sa_query.c(40.95 KB)
📄 ib_smi.c(9.98 KB)
📄 ib_sysfs.c(34.26 KB)
📄 ib_ucm.c(33.52 KB)
📄 ib_ucma.c(42.96 KB)
📄 ib_ud_header.c(14.5 KB)
📄 ib_umem.c(8.65 KB)
📄 ib_umem_odp.c(20.08 KB)
📄 ib_umem_rbtree.c(3.12 KB)
📄 ib_user_mad.c(33.83 KB)
📄 ib_uverbs_cmd.c(104 KB)
📄 ib_uverbs_main.c(38.22 KB)
📄 ib_uverbs_marshall.c(5.4 KB)
📄 ib_verbs.c(54.49 KB)
📄 iwcm.h(2.35 KB)
📄 iwpm_util.h(2.56 KB)
📄 mad_priv.h(6.09 KB)
📄 mad_rmpp.h(2.13 KB)
📄 opa_smi.h(2.87 KB)
📄 sa.h(2.34 KB)
📄 smi.h(3.33 KB)
📄 uverbs.h(9.54 KB)

Editing: ib_packer.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
 *
 * Copyright (c) 2004 Topspin 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <linux/string.h>

#include <rdma/ib_pack.h>

static u64 value_read(int offset, int size, void *structure)
{
	switch (size) {
	case 1: return                *(u8  *) ((char *)structure + offset);
	case 2: return be16_to_cpup((__be16 *) ((char *)structure + offset));
	case 4: return be32_to_cpup((__be32 *) ((char *)structure + offset));
	case 8: return be64_to_cpup((__be64 *) ((char *)structure + offset));
	default:
		pr_warn("Field size %d bits not handled\n", size * 8);
		return 0;
	}
}

/**
 * ib_pack - Pack a structure into a buffer
 * @desc:Array of structure field descriptions
 * @desc_len:Number of entries in @desc
 * @structure:Structure to pack from
 * @buf:Buffer to pack into
 *
 * ib_pack() packs a list of structure fields into a buffer,
 * controlled by the array of fields in @desc.
 */
void ib_pack(const struct ib_field        *desc,
	     int                           desc_len,
	     void                         *structure,
	     void                         *buf)
{
	int i;

for (i = 0; i < desc_len; ++i) {
		if (desc[i].size_bits <= 32) {
			int shift;
			u32 val;
			__be32 mask;
			__be32 *addr;

shift = 32 - desc[i].offset_bits - desc[i].size_bits;
			if (desc[i].struct_size_bytes)
				val = value_read(desc[i].struct_offset_bytes,
						 desc[i].struct_size_bytes,
						 structure) << shift;
			else
				val = 0;

mask = cpu_to_be32(((1ull << desc[i].size_bits) - 1) << shift);
			addr = (__be32 *) buf + desc[i].offset_words;
			*addr = (*addr & ~mask) | (cpu_to_be32(val) & mask);
		} else if (desc[i].size_bits <= 64) {
			int shift;
			u64 val;
			__be64 mask;
			__be64 *addr;

shift = 64 - desc[i].offset_bits - desc[i].size_bits;
			if (desc[i].struct_size_bytes)
				val = value_read(desc[i].struct_offset_bytes,
						 desc[i].struct_size_bytes,
						 structure) << shift;
			else
				val = 0;

mask = cpu_to_be64((~0ull >> (64 - desc[i].size_bits)) << shift);
			addr = (__be64 *) ((__be32 *) buf + desc[i].offset_words);
			*addr = (*addr & ~mask) | (cpu_to_be64(val) & mask);
		} else {
			if (desc[i].offset_bits % 8 ||
			    desc[i].size_bits   % 8) {
				pr_warn("Structure field %s of size %d bits is not byte-aligned\n",
					desc[i].field_name, desc[i].size_bits);
			}

if (desc[i].struct_size_bytes)
				memcpy((char *)buf + desc[i].offset_words * 4 +
				       desc[i].offset_bits / 8,
				       (char *)structure + desc[i].struct_offset_bytes,
				       desc[i].size_bits / 8);
			else
				memset((char *)buf + desc[i].offset_words * 4 +
				       desc[i].offset_bits / 8,
				       0,
				       desc[i].size_bits / 8);
		}
	}
}
EXPORT_SYMBOL(ib_pack);

static void value_write(int offset, int size, u64 val, void *structure)
{
	switch (size * 8) {
	case 8:  *(    u8 *) ((char *)structure + offset) = val; break;
	case 16: *(__be16 *) ((char *)structure + offset) = cpu_to_be16(val); break;
	case 32: *(__be32 *) ((char *)structure + offset) = cpu_to_be32(val); break;
	case 64: *(__be64 *) ((char *)structure + offset) = cpu_to_be64(val); break;
	default:
		pr_warn("Field size %d bits not handled\n", size * 8);
	}
}

/**
 * ib_unpack - Unpack a buffer into a structure
 * @desc:Array of structure field descriptions
 * @desc_len:Number of entries in @desc
 * @buf:Buffer to unpack from
 * @structure:Structure to unpack into
 *
 * ib_pack() unpacks a list of structure fields from a buffer,
 * controlled by the array of fields in @desc.
 */
void ib_unpack(const struct ib_field        *desc,
	       int                           desc_len,
	       void                         *buf,
	       void                         *structure)
{
	int i;

for (i = 0; i < desc_len; ++i) {
		if (!desc[i].struct_size_bytes)
			continue;

if (desc[i].size_bits <= 32) {
			int shift;
			u32  val;
			u32  mask;
			__be32 *addr;

shift = 32 - desc[i].offset_bits - desc[i].size_bits;
			mask = ((1ull << desc[i].size_bits) - 1) << shift;
			addr = (__be32 *) buf + desc[i].offset_words;
			val = (be32_to_cpup(addr) & mask) >> shift;
			value_write(desc[i].struct_offset_bytes,
				    desc[i].struct_size_bytes,
				    val,
				    structure);
		} else if (desc[i].size_bits <= 64) {
			int shift;
			u64  val;
			u64  mask;
			__be64 *addr;

shift = 64 - desc[i].offset_bits - desc[i].size_bits;
			mask = (~0ull >> (64 - desc[i].size_bits)) << shift;
			addr = (__be64 *) buf + desc[i].offset_words;
			val = (be64_to_cpup(addr) & mask) >> shift;
			value_write(desc[i].struct_offset_bytes,
				    desc[i].struct_size_bytes,
				    val,
				    structure);
		} else {
			if (desc[i].offset_bits % 8 ||
			    desc[i].size_bits   % 8) {
				pr_warn("Structure field %s of size %d bits is not byte-aligned\n",
					desc[i].field_name, desc[i].size_bits);
			}

memcpy((char *)structure + desc[i].struct_offset_bytes,
			       (char *)buf + desc[i].offset_words * 4 +
			       desc[i].offset_bits / 8,
			       desc[i].size_bits / 8);
		}
	}
}
EXPORT_SYMBOL(ib_unpack);

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Editing: ib_packer.c

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