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Diffstat (limited to 'include/scsi/libiscsi.h')
-rw-r--r--include/scsi/libiscsi.h39
1 files changed, 30 insertions, 9 deletions
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 61e53f14f7e..7360e1916e7 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -30,6 +30,7 @@
#include <linux/workqueue.h>
#include <scsi/iscsi_proto.h>
#include <scsi/iscsi_if.h>
+#include <scsi/scsi_transport_iscsi.h>
struct scsi_transport_template;
struct scsi_host_template;
@@ -70,12 +71,12 @@ enum {
/* Connection suspend "bit" */
#define ISCSI_SUSPEND_BIT 1
-#define ISCSI_ITT_MASK (0x1fff)
+#define ISCSI_ITT_MASK 0x1fff
#define ISCSI_TOTAL_CMDS_MAX 4096
/* this must be a power of two greater than ISCSI_MGMT_CMDS_MAX */
#define ISCSI_TOTAL_CMDS_MIN 16
#define ISCSI_AGE_SHIFT 28
-#define ISCSI_AGE_MASK (0xf << ISCSI_AGE_SHIFT)
+#define ISCSI_AGE_MASK 0xf
#define ISCSI_ADDRESS_BUF_LEN 64
@@ -93,24 +94,38 @@ enum {
ISCSI_TASK_RUNNING,
};
+struct iscsi_r2t_info {
+ __be32 ttt; /* copied from R2T */
+ __be32 exp_statsn; /* copied from R2T */
+ uint32_t data_length; /* copied from R2T */
+ uint32_t data_offset; /* copied from R2T */
+ int data_count; /* DATA-Out payload progress */
+ int datasn;
+ /* LLDs should set/update these values */
+ int sent; /* R2T sequence progress */
+};
+
struct iscsi_task {
/*
* Because LLDs allocate their hdr differently, this is a pointer
* and length to that storage. It must be setup at session
* creation time.
*/
- struct iscsi_cmd *hdr;
+ struct iscsi_hdr *hdr;
unsigned short hdr_max;
unsigned short hdr_len; /* accumulated size of hdr used */
+ /* copied values in case we need to send tmfs */
+ itt_t hdr_itt;
+ __be32 cmdsn;
+ uint8_t lun[8];
+
int itt; /* this ITT */
- uint32_t unsol_datasn;
unsigned imm_count; /* imm-data (bytes) */
- unsigned unsol_count; /* unsolicited (bytes)*/
/* offset in unsolicited stream (bytes); */
- unsigned unsol_offset;
- unsigned data_count; /* remaining Data-Out */
+ struct iscsi_r2t_info unsol_r2t;
char *data; /* mgmt payload */
+ unsigned data_count;
struct scsi_cmnd *sc; /* associated SCSI cmd*/
struct iscsi_conn *conn; /* used connection */
@@ -121,6 +136,11 @@ struct iscsi_task {
void *dd_data; /* driver/transport data */
};
+static inline int iscsi_task_has_unsol_data(struct iscsi_task *task)
+{
+ return task->unsol_r2t.data_length > task->unsol_r2t.sent;
+}
+
static inline void* iscsi_next_hdr(struct iscsi_task *task)
{
return (void*)task->hdr + task->hdr_len;
@@ -376,8 +396,9 @@ extern void iscsi_suspend_tx(struct iscsi_conn *conn);
* pdu and task processing
*/
extern void iscsi_update_cmdsn(struct iscsi_session *, struct iscsi_nopin *);
-extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_task *,
- struct iscsi_data *hdr);
+extern void iscsi_prep_data_out_pdu(struct iscsi_task *task,
+ struct iscsi_r2t_info *r2t,
+ struct iscsi_data *hdr);
extern int iscsi_conn_send_pdu(struct iscsi_cls_conn *, struct iscsi_hdr *,
char *, uint32_t);
extern int iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,