134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/*
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Copyright (C) 2010 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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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 "iscsi-private.h"
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int
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iscsi_nop_out_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
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unsigned char *data, int len, void *private_data)
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{
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struct iscsi_pdu *pdu;
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if (iscsi->is_loggedin == 0) {
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iscsi_set_error(iscsi, "trying to send nop-out while not "
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"logged in");
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return -1;
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}
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pdu = iscsi_allocate_pdu(iscsi, ISCSI_PDU_NOP_OUT, ISCSI_PDU_NOP_IN);
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if (pdu == NULL) {
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iscsi_set_error(iscsi, "Failed to allocate nop-out pdu");
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return -1;
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}
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/* immediate flag */
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iscsi_pdu_set_immediate(pdu);
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/* flags */
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iscsi_pdu_set_pduflags(pdu, 0x80);
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/* ttt */
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iscsi_pdu_set_ttt(pdu, 0xffffffff);
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/* lun */
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iscsi_pdu_set_lun(pdu, 0);
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/* cmdsn is not increased if Immediate delivery*/
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iscsi_pdu_set_cmdsn(pdu, iscsi->cmdsn);
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pdu->cmdsn = iscsi->cmdsn;
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/* exp statsn */
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iscsi_pdu_set_expstatsn(pdu, iscsi->statsn+1);
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pdu->callback = cb;
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pdu->private_data = private_data;
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if (iscsi_pdu_add_data(iscsi, pdu, data, len) != 0) {
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iscsi_set_error(iscsi, "Failed to add outdata to nop-out");
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iscsi_free_pdu(iscsi, pdu);
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return -1;
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}
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if (iscsi_queue_pdu(iscsi, pdu) != 0) {
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iscsi_set_error(iscsi, "failed to queue iscsi nop-out pdu");
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iscsi_free_pdu(iscsi, pdu);
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return -1;
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}
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return 0;
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}
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int
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iscsi_send_target_nop_out(struct iscsi_context *iscsi, uint32_t ttt)
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{
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struct iscsi_pdu *pdu;
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pdu = iscsi_allocate_pdu_with_itt_flags(iscsi, ISCSI_PDU_NOP_OUT, ISCSI_PDU_NO_PDU,
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0xffffffff,ISCSI_PDU_DELETE_WHEN_SENT|ISCSI_PDU_NO_CALLBACK);
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if (pdu == NULL) {
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iscsi_set_error(iscsi, "Failed to allocate nop-out pdu");
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return -1;
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}
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/* immediate flag */
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iscsi_pdu_set_immediate(pdu);
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/* flags */
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iscsi_pdu_set_pduflags(pdu, 0x80);
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/* ttt */
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iscsi_pdu_set_ttt(pdu, ttt);
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/* lun */
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iscsi_pdu_set_lun(pdu, 0);
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/* cmdsn is not increased if Immediate delivery*/
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iscsi_pdu_set_cmdsn(pdu, iscsi->cmdsn);
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pdu->cmdsn = iscsi->cmdsn;
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/* exp statsn */
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iscsi_pdu_set_expstatsn(pdu, iscsi->statsn+1);
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if (iscsi_queue_pdu(iscsi, pdu) != 0) {
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iscsi_set_error(iscsi, "failed to queue iscsi nop-out pdu");
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iscsi_free_pdu(iscsi, pdu);
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return -1;
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}
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return 0;
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}
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int
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iscsi_process_nop_out_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
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struct iscsi_in_pdu *in)
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{
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struct iscsi_data data;
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data.data = NULL;
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data.size = 0;
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if (in->data_pos > ISCSI_HEADER_SIZE) {
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data.data = in->data;
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data.size = in->data_pos;
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}
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pdu->callback(iscsi, SCSI_STATUS_GOOD, &data, pdu->private_data);
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return 0;
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}
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