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Target initiated NOP:

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Initial support to try to respond to target initiated NOPs.
This commit is contained in:
Ronnie Sahlberg
2011-04-10 15:32:47 +10:00
parent cfe19486ee
commit ef846b0f30
3 changed files with 79 additions and 2 deletions
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45
lib/nop.c
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@@ -47,12 +47,15 @@ iscsi_nop_out_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
iscsi_pdu_set_ttt(pdu, 0xffffffff);
/* lun */
iscsi_pdu_set_lun(pdu, 2);
iscsi_pdu_set_lun(pdu, 0);
/* cmdsn is not increased if Immediate delivery*/
iscsi_pdu_set_cmdsn(pdu, iscsi->cmdsn);
pdu->cmdsn = iscsi->cmdsn;
/* exp statsn */
iscsi_pdu_set_expstatsn(pdu, iscsi->statsn+1);
pdu->callback = cb;
pdu->private_data = private_data;
@@ -71,6 +74,46 @@ iscsi_nop_out_async(struct iscsi_context *iscsi, iscsi_command_cb cb,
return 0;
}
int
iscsi_send_target_nop_out(struct iscsi_context *iscsi, uint32_t ttt)
{
struct iscsi_pdu *pdu;
pdu = iscsi_allocate_pdu_with_itt_flags(iscsi, ISCSI_PDU_NOP_OUT, ISCSI_PDU_NO_PDU,
0xffffffff,ISCSI_PDU_DELETE_WHEN_SENT|ISCSI_PDU_NO_CALLBACK);
if (pdu == NULL) {
iscsi_set_error(iscsi, "Failed to allocate nop-out pdu");
return -1;
}
/* immediate flag */
iscsi_pdu_set_immediate(pdu);
/* flags */
iscsi_pdu_set_pduflags(pdu, 0x80);
/* ttt */
iscsi_pdu_set_ttt(pdu, ttt);
/* lun */
iscsi_pdu_set_lun(pdu, 0);
/* cmdsn is not increased if Immediate delivery*/
iscsi_pdu_set_cmdsn(pdu, iscsi->cmdsn);
pdu->cmdsn = iscsi->cmdsn;
/* exp statsn */
iscsi_pdu_set_expstatsn(pdu, iscsi->statsn+1);
if (iscsi_queue_pdu(iscsi, pdu) != 0) {
iscsi_set_error(iscsi, "failed to queue iscsi nop-out pdu");
iscsi_free_pdu(iscsi, pdu);
return -1;
}
return 0;
}
int
iscsi_process_nop_out_reply(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
struct iscsi_in_pdu *in)