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Add a new helper function iscsi_allocate_pdu_with_itt_flags()

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This function can allocate a new pdu using a specific itt value
and specific flags instead of using the defaults of, next iff, no flags set.

This can be used when we need to allocate additional PDUs in a chain,
for commands that span across multiple PDUs and where all need to keep
the same itt value.

For example
   ->WRITE10 cdb
   ->DATAOUT
   -<RESPONSE

Here the DATAOUT PDU belongs to the same task that was started by write10
so it need to use the same itt value.
This commit is contained in:
Ronnie Sahlberg
2011-01-02 17:49:12 +11:00
parent 1569624fd2
commit 9cd03ca559
2 changed files with 18 additions and 5 deletions
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5
include/iscsi-private.h
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@@ -175,6 +175,11 @@ void iscsi_free_scsi_cbdata(struct iscsi_scsi_cbdata *scsi_cbdata);
struct iscsi_pdu *iscsi_allocate_pdu(struct iscsi_context *iscsi,
enum iscsi_opcode opcode,
enum iscsi_opcode response_opcode);
struct iscsi_pdu *iscsi_allocate_pdu_with_itt_flags(struct iscsi_context *iscsi,
enum iscsi_opcode opcode,
enum iscsi_opcode response_opcode,
uint32_t itt,
uint32_t flags);
void iscsi_free_pdu(struct iscsi_context *iscsi, struct iscsi_pdu *pdu);
void iscsi_pdu_set_pduflags(struct iscsi_pdu *pdu, unsigned char flags);
void iscsi_pdu_set_immediate(struct iscsi_pdu *pdu);