113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*
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Copyright (C) 2012 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include "iscsi.h"
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#include "scsi-lowlevel.h"
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#include "iscsi-test.h"
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int T0250_prefetch16_simple(const char *initiator, const char *url)
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{
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struct iscsi_context *iscsi;
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struct scsi_task *task;
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struct scsi_readcapacity16 *rc16;
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int ret, i, lun;
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uint32_t block_size;
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uint64_t num_blocks;
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iscsi = iscsi_context_login(initiator, url, &lun);
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if (iscsi == NULL) {
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printf("Failed to login to target\n");
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return -1;
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}
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/* find the size of the LUN */
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task = iscsi_readcapacity16_sync(iscsi, lun);
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if (task == NULL) {
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printf("Failed to send READCAPACITY16 command: %s\n", iscsi_get_error(iscsi));
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ret = -1;
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goto finished;
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}
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if (task->status != SCSI_STATUS_GOOD) {
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printf("READCAPACITY16 command: failed with sense. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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rc16 = scsi_datain_unmarshall(task);
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if (rc16 == NULL) {
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printf("failed to unmarshall READCAPACITY16 data. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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block_size = rc16->block_length;
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num_blocks = rc16->returned_lba;
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scsi_free_scsi_task(task);
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ret = 0;
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/* prefetch the first 1 - 256 blocks at the start of the LUN */
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printf("Prefetching first 1-256 blocks ... ");
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for (i = 1; i <= 256; i++) {
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task = iscsi_prefetch16_sync(iscsi, lun, 0, i, 0, 0);
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if (task == NULL) {
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printf("[FAILED]\n");
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printf("Failed to send prefetch16 command: %s\n", iscsi_get_error(iscsi));
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ret = -1;
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goto finished;
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}
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if (task->status != SCSI_STATUS_GOOD) {
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printf("[FAILED]\n");
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printf("Prefetch16 command: failed with sense. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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scsi_free_scsi_task(task);
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}
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printf("[OK]\n");
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/* Prefetch the last 0 - 255 blocks at the end of the LUN */
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printf("Prefetching last 0-255 blocks ... ");
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for (i = 0; i < 256; i++) {
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task = iscsi_prefetch16_sync(iscsi, lun, num_blocks - i, i, 0, 0);
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if (task == NULL) {
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printf("[FAILED]\n");
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printf("Failed to send prefetch16 command: %s\n", iscsi_get_error(iscsi));
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ret = -1;
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goto finished;
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}
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if (task->status != SCSI_STATUS_GOOD) {
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printf("[FAILED]\n");
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printf("Prefetch16 command: failed with sense. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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scsi_free_scsi_task(task);
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}
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printf("[OK]\n");
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finished:
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iscsi_logout_sync(iscsi);
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iscsi_destroy_context(iscsi);
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return ret;
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}
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