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authorVarun Prakash <varun@chelsio.com>2016-04-20 00:00:13 +0530
committerNicholas Bellinger <nab@linux-iscsi.org>2016-05-09 23:12:08 -0700
commit8567270d8de6192eb2632b45421b1fde9bcda2f2 (patch)
tree84db3d3884911087df816395957f2a209a3ca851
parent42bc3e57877f2357ccbbc3ad6e6c7d9be44579f9 (diff)
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iscsi-target: add void (*iscsit_get_r2t_ttt)()
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@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
-rw-r--r--drivers/target/iscsi/iscsi_target.c5
-rw-r--r--include/target/iscsi/iscsi_transport.h2
2 files changed, 6 insertions, 1 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index a827b7afe42c..a28eb87d6efc 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 46aa219be1ae..32704b214be5 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 *);
};