12ab86e24d
SPDK iSCSI target didn't convert LUN ID from integer to structure when it sends R2T PDUs. The next patch will fix the issue. Introducing helper functions into SCSI library and using them will be clean. Hence this patch adds two helper functions to convert LUN ID between structure and integer. The logic of helper functions is derived simply from the current implementation in SPDK. Change-Id: I114b546cfcb44109d6cd131a1fa972f4d6bfea38 Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/449962 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "scsi_internal.h"
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struct spdk_scsi_globals g_spdk_scsi;
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int
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spdk_scsi_init(void)
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{
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int rc;
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rc = pthread_mutex_init(&g_spdk_scsi.mutex, NULL);
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if (rc != 0) {
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SPDK_ERRLOG("mutex_init() failed\n");
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return -1;
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}
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return 0;
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}
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void
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spdk_scsi_fini(void)
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{
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pthread_mutex_destroy(&g_spdk_scsi.mutex);
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}
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SPDK_TRACE_REGISTER_FN(scsi_trace, "scsi", TRACE_GROUP_SCSI)
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{
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spdk_trace_register_owner(OWNER_SCSI_DEV, 'd');
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spdk_trace_register_object(OBJECT_SCSI_TASK, 't');
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spdk_trace_register_description("SCSI_TASK_DONE", "", TRACE_SCSI_TASK_DONE,
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OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, "");
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spdk_trace_register_description("SCSI_TASK_START", "", TRACE_SCSI_TASK_START,
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OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, "");
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}
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uint64_t
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spdk_scsi_lun_id_int_to_fmt(int lun_id)
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{
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uint64_t fmt_lun, method;
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if (SPDK_SCSI_DEV_MAX_LUN <= 0x0100) {
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/* below 256 */
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method = 0x00U;
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fmt_lun = (method & 0x03U) << 62;
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fmt_lun |= ((uint64_t)lun_id & 0x00ffU) << 48;
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} else if (SPDK_SCSI_DEV_MAX_LUN <= 0x4000) {
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/* below 16384 */
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method = 0x01U;
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fmt_lun = (method & 0x03U) << 62;
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fmt_lun |= ((uint64_t)lun_id & 0x3fffU) << 48;
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} else {
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/* XXX */
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fmt_lun = 0;
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}
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return fmt_lun;
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}
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int
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spdk_scsi_lun_id_fmt_to_int(uint64_t fmt_lun)
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{
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uint64_t method;
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int lun_i;
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method = (fmt_lun >> 62) & 0x03U;
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fmt_lun = fmt_lun >> 48;
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if (method == 0x00U) {
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lun_i = (int)(fmt_lun & 0x00ffU);
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} else if (method == 0x01U) {
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lun_i = (int)(fmt_lun & 0x3fffU);
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} else {
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lun_i = 0xffffU;
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}
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return lun_i;
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}
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SPDK_LOG_REGISTER_COMPONENT("scsi", SPDK_LOG_SCSI)
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