Add void (*iscsit_get_r2t_ttt)() to
struct iscsit_transport, iscsi-target
uses this callback to get
r2t->targ_xfer_tag.
cxgbit.ko needs this callback
for Direct Data Placement of Data Out
pdus, adapter uses ttt in Data Out pdus
for placing data directly in to the host
buffers.
Signed-off-by: Varun Prakash <varun@xxxxxxxxxxx>
---
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 a827b7a..a28eb87 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -3039,7 +3039,10 @@ 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 46aa219..32704b2 100644
--- a/include/target/iscsi/iscsi_transport.h
+++ b/include/target/iscsi/iscsi_transport.h
@@ -27,6 +27,8 @@ 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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