1c024d6bc4
Input processing used to keep all data in one single input buffer, which makes it hard to handle nested events as well as reading directly from the socket into the application buffer without an extra copy. Create a new iscsi_in_pdu structure where we store the header, and any data for the recevied pdu and store them in a proper input queue. Change the signature for all processing functions to tahe a iscsi_in_pdu structure for the received pdu instead of just a pointer to a buffer.
91 lines
2.3 KiB
C
91 lines
2.3 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 send nop-out while not logged "
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"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, 2);
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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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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_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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