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iscsi-target: add void (*iscsit_get_r2t_ttt)()

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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>
This commit is contained in:
Varun Prakash 2016-04-20 00:00:13 +05:30 committed by Nicholas Bellinger
parent 42bc3e5787
commit 8567270d8d
2 changed files with 6 additions and 1 deletions
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5
drivers/target/iscsi/iscsi_target.c
View File

@ -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);

2
include/target/iscsi/iscsi_transport.h
View File

@ -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 *);
};