int
iscsi_pdu_add_data(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
unsigned char *dptr, int dsize)
{
if (pdu == NULL) {
iscsi_set_error(iscsi, "trying to add data to NULL pdu");
return -1;
}
if (dsize == 0) {
iscsi_set_error(iscsi, "Trying to append zero size data to "
"pdu");
return -1;
}
if (iscsi_add_data(iscsi, &pdu->outdata, dptr, dsize, 1) != 0) {
iscsi_set_error(iscsi, "failed to add data to pdu buffer");
return -1;
}
/* update data segment length */
scsi_set_uint32(&pdu->outdata.data[4], pdu->outdata.size
- ISCSI_HEADER_SIZE);
return 0;
}
static int my_iscsi_queue_pdu(struct iscsi_context *iscsi, struct iscsi_pdu *pdu)
{
switch (change_cmdsn) {
case 1:
/* change the cmdsn so it becomes too big */
scsi_set_uint32(&pdu->outdata.data[24], iscsi->maxcmdsn + 1);
break;
case 2:
/* change the cmdsn so it becomes too small */
scsi_set_uint32(&pdu->outdata.data[24], 0);
break;
}
change_cmdsn = 0;
return 0;
}
static int my_iscsi_queue_pdu(struct iscsi_context *iscsi, struct iscsi_pdu *pdu)
{
switch (change_cmdsn) {
case 1:
/* change the cmdsn so it becomes too big */
scsi_set_uint32(&pdu->outdata.data[24], iscsi->expcmdsn - 1);
/* fudge the cmdsn value back to where it should be if this
* pdu is ignored.
*/
iscsi->cmdsn = iscsi->expcmdsn;
break;
}
change_cmdsn = 0;
return 0;
}
void
iscsi_pdu_set_bufferoffset(struct iscsi_pdu *pdu, uint32_t bufferoffset)
{
scsi_set_uint32(&pdu->outdata.data[40], bufferoffset);
}
void
iscsi_pdu_set_expstatsn(struct iscsi_pdu *pdu, uint32_t expstatsnsn)
{
scsi_set_uint32(&pdu->outdata.data[28], expstatsnsn);
}
void
iscsi_pdu_set_datasn(struct iscsi_pdu *pdu, uint32_t datasn)
{
scsi_set_uint32(&pdu->outdata.data[36], datasn);
}
void
iscsi_pdu_set_rcmdsn(struct iscsi_pdu *pdu, uint32_t rcmdsn)
{
scsi_set_uint32(&pdu->outdata.data[32], rcmdsn);
}
void
iscsi_pdu_set_cmdsn(struct iscsi_pdu *pdu, uint32_t cmdsn)
{
scsi_set_uint32(&pdu->outdata.data[24], cmdsn);
}
void
iscsi_pdu_set_ttt(struct iscsi_pdu *pdu, uint32_t ttt)
{
scsi_set_uint32(&pdu->outdata.data[20], ttt);
}
void
iscsi_pdu_set_itt(struct iscsi_pdu *pdu, uint32_t itt)
{
scsi_set_uint32(&pdu->outdata.data[16], itt);
}
