diff --git a/include/iscsi-private.h b/include/iscsi-private.h
index 9f7e965..74053e2 100644
--- a/include/iscsi-private.h
+++ b/include/iscsi-private.h
@@ -189,6 +189,8 @@ void iscsi_pdu_set_lun(struct iscsi_pdu *pdu, uint32_t lun);
 void iscsi_pdu_set_expstatsn(struct iscsi_pdu *pdu, uint32_t expstatsnsn);
 void iscsi_pdu_set_expxferlen(struct iscsi_pdu *pdu, uint32_t expxferlen);
 void iscsi_pdu_set_itt(struct iscsi_pdu *pdu, uint32_t itt);
+void iscsi_pdu_set_datasn(struct iscsi_pdu *pdu, uint32_t datasn);
+void iscsi_pdu_set_bufferoffset(struct iscsi_pdu *pdu, uint32_t bufferoffset);
 int iscsi_pdu_add_data(struct iscsi_context *iscsi, struct iscsi_pdu *pdu,
 		       unsigned char *dptr, int dsize);
 int iscsi_queue_pdu(struct iscsi_context *iscsi, struct iscsi_pdu *pdu);
diff --git a/lib/pdu.c b/lib/pdu.c
index 252cd0a..8effa29 100644
--- a/lib/pdu.c
+++ b/lib/pdu.c
@@ -318,12 +318,24 @@ iscsi_pdu_set_cmdsn(struct iscsi_pdu *pdu, uint32_t cmdsn)
 	*(uint32_t *)&pdu->outdata.data[24] = htonl(cmdsn);
 }
 
+void
+iscsi_pdu_set_datasn(struct iscsi_pdu *pdu, uint32_t datasn)
+{
+	*(uint32_t *)&pdu->outdata.data[36] = htonl(datasn);
+}
+
 void
 iscsi_pdu_set_expstatsn(struct iscsi_pdu *pdu, uint32_t expstatsnsn)
 {
 	*(uint32_t *)&pdu->outdata.data[28] = htonl(expstatsnsn);
 }
 
+void
+iscsi_pdu_set_bufferoffset(struct iscsi_pdu *pdu, uint32_t bufferoffset)
+{
+	*(uint32_t *)&pdu->outdata.data[40] = htonl(bufferoffset);
+}
+
 void
 iscsi_pdu_set_cdb(struct iscsi_pdu *pdu, struct scsi_task *task)
 {