[PATCH v2 08/16] iscsi-target: add void (*iscsit_get_r2t_ttt)()

[Varun Prakash]

Add void (*iscsit_get_r2t_ttt)() to
struct iscsit_transport, iscsi-target
uses this callback to get
r2t->targ_xfer_tag.

Signed-off-by: Varun Prakash <va...@chelsio.com>
---
 drivers/target/iscsi/iscsi_target.c    | 5 ++++-
 include/target/iscsi/iscsi_transport.h | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/target/iscsi/iscsi_target.c 
b/drivers/target/iscsi/iscsi_target.c
index 98d96d4..ec785c8 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -3060,7 +3060,10 @@ static int iscsit_send_r2t(
        int_to_scsilun(cmd->se_cmd.orig_fe_lun,
                        (struct scsi_lun *)&hdr->lun);
        hdr->itt                = cmd->init_task_tag;
-       r2t->targ_xfer_tag      = session_get_next_ttt(conn->sess);
+       if (conn->conn_transport->iscsit_get_r2t_ttt)
+               conn->conn_transport->iscsit_get_r2t_ttt(conn, cmd, r2t);
+       else
+               r2t->targ_xfer_tag = session_get_next_ttt(conn->sess);
        hdr->ttt                = cpu_to_be32(r2t->targ_xfer_tag);
        hdr->statsn             = cpu_to_be32(conn->stat_sn);
        hdr->exp_cmdsn          = cpu_to_be32(conn->sess->exp_cmd_sn);
diff --git a/include/target/iscsi/iscsi_transport.h 
b/include/target/iscsi/iscsi_transport.h
index dbef892..f949e70 100644
--- a/include/target/iscsi/iscsi_transport.h
+++ b/include/target/iscsi/iscsi_transport.h
@@ -32,6 +32,8 @@ struct iscsit_transport {
        void (*iscsit_release_cmd)(struct iscsi_conn *, struct iscsi_cmd *);
        void (*iscsit_get_rx_pdu)(struct iscsi_conn *);
        int (*iscsit_validate_params)(struct iscsi_conn *);
+       void (*iscsit_get_r2t_ttt)(struct iscsi_conn *, struct iscsi_cmd *,
+                                  struct iscsi_r2t *);
        enum target_prot_op (*iscsit_get_sup_prot_ops)(struct iscsi_conn *);
 };
 
-- 
2.0.2

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