iscsit: use the itt_t abstract type

Use the special itt_t type defined by the iscsi headers and the initiator
to make sure it's an opaque value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

10 files changed, 37 insertions, 46 deletions

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 2e7bf7a51e7f..1c843b51f261 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -785,7 +785,6 @@ static int iscsit_handle_scsi_cmd(
 
         hdr                     = (struct iscsi_scsi_req *) buf;
         payload_length          = ntoh24(hdr->dlength);
-        hdr->itt                = be32_to_cpu(hdr->itt);
         hdr->data_length        = be32_to_cpu(hdr->data_length);
         hdr->cmdsn              = be32_to_cpu(hdr->cmdsn);
         hdr->exp_statsn         = be32_to_cpu(hdr->exp_statsn);
@@ -1194,7 +1193,6 @@ static int iscsit_handle_data_out(struct iscsi_conn *conn, unsigned char *buf)
 
         hdr                     = (struct iscsi_data *) buf;
         payload_length          = ntoh24(hdr->dlength);
-        hdr->itt                = be32_to_cpu(hdr->itt);
         hdr->ttt                = be32_to_cpu(hdr->ttt);
         hdr->exp_statsn         = be32_to_cpu(hdr->exp_statsn);
         hdr->datasn             = be32_to_cpu(hdr->datasn);
@@ -1425,12 +1423,11 @@ static int iscsit_handle_nop_out(
 
         hdr                     = (struct iscsi_nopout *) buf;
         payload_length          = ntoh24(hdr->dlength);
-        hdr->itt                = be32_to_cpu(hdr->itt);
         hdr->ttt                = be32_to_cpu(hdr->ttt);
         hdr->cmdsn              = be32_to_cpu(hdr->cmdsn);
         hdr->exp_statsn         = be32_to_cpu(hdr->exp_statsn);
 
-        if ((hdr->itt == 0xFFFFFFFF) && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) {
+        if (hdr->itt == RESERVED_ITT && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) {
                 pr_err("NOPOUT ITT is reserved, but Immediate Bit is"
                         " not set, protocol error.\n");
                 return iscsit_add_reject(ISCSI_REASON_PROTOCOL_ERROR, 1,
@@ -1448,7 +1445,7 @@ static int iscsit_handle_nop_out(
 
         pr_debug("Got NOPOUT Ping %s ITT: 0x%08x, TTT: 0x%09x,"
                 " CmdSN: 0x%08x, ExpStatSN: 0x%08x, Length: %u\n",
-                (hdr->itt == 0xFFFFFFFF) ? "Response" : "Request",
+                hdr->itt == RESERVED_ITT ? "Response" : "Request",
                 hdr->itt, hdr->ttt, hdr->cmdsn, hdr->exp_statsn,
                 payload_length);
         /*
@@ -1556,7 +1553,7 @@ static int iscsit_handle_nop_out(
                 pr_debug("Ping Data: \"%s\"\n", ping_data);
         }
 
-        if (hdr->itt != 0xFFFFFFFF) {
+        if (hdr->itt != RESERVED_ITT) {
                 if (!cmd) {
                         pr_err("Checking CmdSN for NOPOUT,"
                                 " but cmd is NULL!\n");
@@ -1639,8 +1636,6 @@ static int iscsit_handle_task_mgt_cmd(
         u8 function;
 
         hdr                     = (struct iscsi_tm *) buf;
-        hdr->itt                = be32_to_cpu(hdr->itt);
-        hdr->rtt                = be32_to_cpu(hdr->rtt);
         hdr->cmdsn              = be32_to_cpu(hdr->cmdsn);
         hdr->exp_statsn         = be32_to_cpu(hdr->exp_statsn);
         hdr->refcmdsn           = be32_to_cpu(hdr->refcmdsn);
@@ -1655,9 +1650,9 @@ static int iscsit_handle_task_mgt_cmd(
 
         if ((function != ISCSI_TM_FUNC_ABORT_TASK) &&
             ((function != ISCSI_TM_FUNC_TASK_REASSIGN) &&
-             (hdr->rtt != ISCSI_RESERVED_TAG))) {
+             hdr->rtt != RESERVED_ITT)) {
                 pr_err("RefTaskTag should be set to 0xFFFFFFFF.\n");
-                hdr->rtt = ISCSI_RESERVED_TAG;
+                hdr->rtt = RESERVED_ITT;
         }
 
         if ((function == ISCSI_TM_FUNC_TASK_REASSIGN) &&
@@ -1869,7 +1864,6 @@ static int iscsit_handle_text_cmd(
 
         hdr                     = (struct iscsi_text *) buf;
         payload_length          = ntoh24(hdr->dlength);
-        hdr->itt                = be32_to_cpu(hdr->itt);
         hdr->ttt                = be32_to_cpu(hdr->ttt);
         hdr->cmdsn              = be32_to_cpu(hdr->cmdsn);
         hdr->exp_statsn         = be32_to_cpu(hdr->exp_statsn);
@@ -2131,7 +2125,6 @@ static int iscsit_handle_logout_cmd(
 
         hdr                     = (struct iscsi_logout *) buf;
         reason_code             = (hdr->flags & 0x7f);
-        hdr->itt                = be32_to_cpu(hdr->itt);
         hdr->cid                = be16_to_cpu(hdr->cid);
         hdr->cmdsn              = be32_to_cpu(hdr->cmdsn);
         hdr->exp_statsn = be32_to_cpu(hdr->exp_statsn);
@@ -2219,7 +2212,6 @@ static int iscsit_handle_snack(
 
         hdr                     = (struct iscsi_snack *) buf;
         hdr->flags              &= ~ISCSI_FLAG_CMD_FINAL;
-        hdr->itt                = be32_to_cpu(hdr->itt);
         hdr->ttt                = be32_to_cpu(hdr->ttt);
         hdr->exp_statsn         = be32_to_cpu(hdr->exp_statsn);
         hdr->begrun             = be32_to_cpu(hdr->begrun);
@@ -2414,7 +2406,7 @@ static int iscsit_send_conn_drop_async_message(
         hdr                     = (struct iscsi_async *) cmd->pdu;
         hdr->opcode             = ISCSI_OP_ASYNC_EVENT;
         hdr->flags              = ISCSI_FLAG_CMD_FINAL;
-        cmd->init_task_tag      = 0xFFFFFFFF;
+        cmd->init_task_tag      = RESERVED_ITT;
         cmd->targ_xfer_tag      = 0xFFFFFFFF;
         put_unaligned_be64(0xFFFFFFFFFFFFFFFFULL, &hdr->rsvd4[0]);
         cmd->stat_sn            = conn->stat_sn++;
@@ -2536,7 +2528,7 @@ static int iscsit_send_data_in(
         else
                 put_unaligned_le64(0xFFFFFFFFFFFFFFFFULL, &hdr->lun);
 
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         hdr->ttt                = (hdr->flags & ISCSI_FLAG_DATA_ACK) ?
                                    cpu_to_be32(cmd->targ_xfer_tag) :
                                    0xFFFFFFFF;
@@ -2708,7 +2700,7 @@ static int iscsit_send_logout_response(
         hdr->opcode             = ISCSI_OP_LOGOUT_RSP;
         hdr->flags              |= ISCSI_FLAG_CMD_FINAL;
         hdr->response           = cmd->logout_response;
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         cmd->stat_sn            = conn->stat_sn++;
         hdr->statsn             = cpu_to_be32(cmd->stat_sn);
 
@@ -2759,7 +2751,7 @@ static int iscsit_send_unsolicited_nopin(
         memset(hdr, 0, ISCSI_HDR_LEN);
         hdr->opcode             = ISCSI_OP_NOOP_IN;
         hdr->flags              |= ISCSI_FLAG_CMD_FINAL;
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         hdr->ttt                = cpu_to_be32(cmd->targ_xfer_tag);
         cmd->stat_sn            = conn->stat_sn;
         hdr->statsn             = cpu_to_be32(cmd->stat_sn);
@@ -2816,7 +2808,7 @@ static int iscsit_send_nopin_response(
         hdr->flags              |= ISCSI_FLAG_CMD_FINAL;
         hton24(hdr->dlength, cmd->buf_ptr_size);
         put_unaligned_le64(0xFFFFFFFFFFFFFFFFULL, &hdr->lun);
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         hdr->ttt                = cpu_to_be32(cmd->targ_xfer_tag);
         cmd->stat_sn            = conn->stat_sn++;
         hdr->statsn             = cpu_to_be32(cmd->stat_sn);
@@ -2906,7 +2898,7 @@ static int iscsit_send_r2t(
         hdr->flags              |= ISCSI_FLAG_CMD_FINAL;
         int_to_scsilun(cmd->se_cmd.orig_fe_lun,
                         (struct scsi_lun *)&hdr->lun);
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         spin_lock_bh(&conn->sess->ttt_lock);
         r2t->targ_xfer_tag      = conn->sess->targ_xfer_tag++;
         if (r2t->targ_xfer_tag == 0xFFFFFFFF)
@@ -3074,7 +3066,7 @@ static int iscsit_send_status(
         }
         hdr->response           = cmd->iscsi_response;
         hdr->cmd_status         = cmd->se_cmd.scsi_status;
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         hdr->statsn             = cpu_to_be32(cmd->stat_sn);
 
         iscsit_increment_maxcmdsn(cmd, conn->sess);
@@ -3187,7 +3179,7 @@ static int iscsit_send_task_mgt_rsp(
         hdr->opcode             = ISCSI_OP_SCSI_TMFUNC_RSP;
         hdr->flags              = ISCSI_FLAG_CMD_FINAL;
         hdr->response           = iscsit_convert_tcm_tmr_rsp(se_tmr);
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         cmd->stat_sn            = conn->stat_sn++;
         hdr->statsn             = cpu_to_be32(cmd->stat_sn);
 
@@ -3360,7 +3352,7 @@ static int iscsit_send_text_rsp(
         hdr->opcode             = ISCSI_OP_TEXT_RSP;
         hdr->flags              |= ISCSI_FLAG_CMD_FINAL;
         hton24(hdr->dlength, text_length);
-        hdr->itt                = cpu_to_be32(cmd->init_task_tag);
+        hdr->itt                = cmd->init_task_tag;
         hdr->ttt                = cpu_to_be32(cmd->targ_xfer_tag);
         cmd->stat_sn            = conn->stat_sn++;
         hdr->statsn             = cpu_to_be32(cmd->stat_sn);
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 8c9955f51c5d..ff6fd4fb624d 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1475,7 +1475,8 @@ static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
 {
         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
 
-        return cmd->init_task_tag;
+        /* only used for printks or comparism with ->ref_task_tag */
+        return (__force u32)cmd->init_task_tag;
 }
 
 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index e6a830545c89..226fe62d4e61 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -361,7 +361,7 @@ struct iscsi_cmd {
         /* Command flags */
         enum cmd_flags_table    cmd_flags;
         /* Initiator Task Tag assigned from Initiator */
-        u32                     init_task_tag;
+        itt_t                   init_task_tag;
         /* Target Transfer Tag assigned from Target */
         u32                     targ_xfer_tag;
         /* CmdSN assigned from Initiator */
@@ -506,7 +506,7 @@ struct iscsi_conn {
         u32                     auth_id;
         u32                     conn_flags;
         /* Used for iscsi_tx_login_rsp() */
-        u32                     login_itt;
+        itt_t                   login_itt;
         u32                     exp_statsn;
         /* Per connection status sequence number */
         u32                     stat_sn;
@@ -599,7 +599,7 @@ struct iscsi_session {
         /* state session is currently in */
         u32                     session_state;
         /* session wide counter: initiator assigned task tag */
-        u32                     init_task_tag;
+        itt_t                   init_task_tag;
         /* session wide counter: target assigned task tag */
         u32                     targ_xfer_tag;
         u32                     cmdsn_window;
@@ -665,7 +665,7 @@ struct iscsi_login {
         u8 version_max;
         char isid[6];
         u32 cmd_sn;
-        u32 init_task_tag;
+        itt_t init_task_tag;
         u32 initial_exp_statsn;
         u32 rsp_length;
         u16 cid;
diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c
index 3df8a2cef86f..21f29d91a8cb 100644
--- a/drivers/target/iscsi/iscsi_target_erl1.c
+++ b/drivers/target/iscsi/iscsi_target_erl1.c
@@ -466,7 +466,7 @@ static int iscsit_handle_recovery_datain(
 int iscsit_handle_recovery_datain_or_r2t(
         struct iscsi_conn *conn,
         unsigned char *buf,
-        u32 init_task_tag,
+        itt_t init_task_tag,
         u32 targ_xfer_tag,
         u32 begrun,
         u32 runlength)
@@ -498,7 +498,7 @@ int iscsit_handle_recovery_datain_or_r2t(
 /* #warning FIXME: Status SNACK needs to be dependent on OPCODE!!! */
 int iscsit_handle_status_snack(
         struct iscsi_conn *conn,
-        u32 init_task_tag,
+        itt_t init_task_tag,
         u32 targ_xfer_tag,
         u32 begrun,
         u32 runlength)
diff --git a/drivers/target/iscsi/iscsi_target_erl1.h b/drivers/target/iscsi/iscsi_target_erl1.h
index 85e67e29de6b..2a3ebf118a34 100644
--- a/drivers/target/iscsi/iscsi_target_erl1.h
+++ b/drivers/target/iscsi/iscsi_target_erl1.h
@@ -7,8 +7,8 @@ extern int iscsit_create_recovery_datain_values_datasequenceinorder_yes(
 extern int iscsit_create_recovery_datain_values_datasequenceinorder_no(
                         struct iscsi_cmd *, struct iscsi_datain_req *);
 extern int iscsit_handle_recovery_datain_or_r2t(struct iscsi_conn *, unsigned char *,
-                        u32, u32, u32, u32);
-extern int iscsit_handle_status_snack(struct iscsi_conn *, u32, u32,
+                        itt_t, u32, u32, u32);
+extern int iscsit_handle_status_snack(struct iscsi_conn *, itt_t, u32,
                         u32, u32);
 extern int iscsit_handle_data_ack(struct iscsi_conn *, u32, u32, u32);
 extern int iscsit_dataout_datapduinorder_no_fbit(struct iscsi_cmd *, struct iscsi_pdu *);
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 1e5d05011915..4c83d7a39bf3 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -953,9 +953,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
         pdu                     = (struct iscsi_login_req *) buffer;
         pdu->cid                = be16_to_cpu(pdu->cid);
         pdu->tsih               = be16_to_cpu(pdu->tsih);
-        pdu->itt                = be32_to_cpu(pdu->itt);
         pdu->cmdsn              = be32_to_cpu(pdu->cmdsn);
         pdu->exp_statsn         = be32_to_cpu(pdu->exp_statsn);
+
         /*
          * Used by iscsit_tx_login_rsp() for Login Resonses PDUs
          * when Status-Class != 0.
diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c
index 42b1c50d296a..33ed9b5209cd 100644
--- a/drivers/target/iscsi/iscsi_target_nego.c
+++ b/drivers/target/iscsi/iscsi_target_nego.c
@@ -339,14 +339,14 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
         hton24(login_rsp->dlength, login->rsp_length);
         memcpy(login_rsp->isid, login->isid, 6);
         login_rsp->tsih                 = cpu_to_be16(login->tsih);
-        login_rsp->itt                  = cpu_to_be32(login->init_task_tag);
+        login_rsp->itt                  = login->init_task_tag;
         login_rsp->statsn               = cpu_to_be32(conn->stat_sn++);
         login_rsp->exp_cmdsn            = cpu_to_be32(conn->sess->exp_cmd_sn);
         login_rsp->max_cmdsn            = cpu_to_be32(conn->sess->max_cmd_sn);
 
         pr_debug("Sending Login Response, Flags: 0x%02x, ITT: 0x%08x,"
                 " ExpCmdSN; 0x%08x, MaxCmdSN: 0x%08x, StatSN: 0x%08x, Length:"
-                " %u\n", login_rsp->flags, ntohl(login_rsp->itt),
+                " %u\n", login_rsp->flags, (__force u32)login_rsp->itt,
                 ntohl(login_rsp->exp_cmdsn), ntohl(login_rsp->max_cmdsn),
                 ntohl(login_rsp->statsn), login->rsp_length);
 
@@ -361,7 +361,6 @@ static int iscsi_target_do_tx_login_io(struct iscsi_conn *conn, struct iscsi_log
 
         login->rsp_length               = 0;
         login_rsp->tsih                 = be16_to_cpu(login_rsp->tsih);
-        login_rsp->itt                  = be32_to_cpu(login_rsp->itt);
         login_rsp->statsn               = be32_to_cpu(login_rsp->statsn);
         mutex_lock(&sess->cmdsn_mutex);
         login_rsp->exp_cmdsn            = be32_to_cpu(sess->exp_cmd_sn);
@@ -382,7 +381,6 @@ static int iscsi_target_do_rx_login_io(struct iscsi_conn *conn, struct iscsi_log
         login_req = (struct iscsi_login_req *) login->req;
         payload_length                  = ntoh24(login_req->dlength);
         login_req->tsih                 = be16_to_cpu(login_req->tsih);
-        login_req->itt                  = be32_to_cpu(login_req->itt);
         login_req->cid                  = be16_to_cpu(login_req->cid);
         login_req->cmdsn                = be32_to_cpu(login_req->cmdsn);
         login_req->exp_statsn           = be32_to_cpu(login_req->exp_statsn);
diff --git a/drivers/target/iscsi/iscsi_target_tmr.c b/drivers/target/iscsi/iscsi_target_tmr.c
index f15462bfafd2..925f829a3704 100644
--- a/drivers/target/iscsi/iscsi_target_tmr.c
+++ b/drivers/target/iscsi/iscsi_target_tmr.c
@@ -61,7 +61,7 @@ u8 iscsit_tmr_abort_task(
                 return ISCSI_TMF_RSP_REJECTED;
         }
 
-        se_tmr->ref_task_tag            = hdr->rtt;
+        se_tmr->ref_task_tag            = (__force u32)hdr->rtt;
         tmr_req->ref_cmd                = ref_cmd;
         tmr_req->ref_cmd_sn             = hdr->refcmdsn;
         tmr_req->exp_data_sn            = hdr->exp_datasn;
@@ -171,7 +171,7 @@ u8 iscsit_tmr_task_reassign(
                 return ISCSI_TMF_RSP_REJECTED;
         }
 
-        se_tmr->ref_task_tag            = hdr->rtt;
+        se_tmr->ref_task_tag            = (__force u32)hdr->rtt;
         tmr_req->ref_cmd                = ref_cmd;
         tmr_req->ref_cmd_sn             = hdr->refcmdsn;
         tmr_req->exp_data_sn            = hdr->exp_datasn;
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index b42cdeb153df..22bec9e899c0 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -351,7 +351,7 @@ int iscsit_check_unsolicited_dataout(struct iscsi_cmd *cmd, unsigned char *buf)
 
 struct iscsi_cmd *iscsit_find_cmd_from_itt(
         struct iscsi_conn *conn,
-        u32 init_task_tag)
+        itt_t init_task_tag)
 {
         struct iscsi_cmd *cmd;
 
@@ -371,7 +371,7 @@ struct iscsi_cmd *iscsit_find_cmd_from_itt(
 
 struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(
         struct iscsi_conn *conn,
-        u32 init_task_tag,
+        itt_t init_task_tag,
         u32 length)
 {
         struct iscsi_cmd *cmd;
@@ -417,7 +417,7 @@ int iscsit_find_cmd_for_recovery(
         struct iscsi_session *sess,
         struct iscsi_cmd **cmd_ptr,
         struct iscsi_conn_recovery **cr_ptr,
-        u32 init_task_tag)
+        itt_t init_task_tag)
 {
         struct iscsi_cmd *cmd = NULL;
         struct iscsi_conn_recovery *cr;
@@ -855,7 +855,7 @@ static int iscsit_add_nopin(struct iscsi_conn *conn, int want_response)
         cmd->iscsi_opcode = ISCSI_OP_NOOP_IN;
         state = (want_response) ? ISTATE_SEND_NOPIN_WANT_RESPONSE :
                                 ISTATE_SEND_NOPIN_NO_RESPONSE;
-        cmd->init_task_tag = 0xFFFFFFFF;
+        cmd->init_task_tag = RESERVED_ITT;
         spin_lock_bh(&conn->sess->ttt_lock);
         cmd->targ_xfer_tag = (want_response) ? conn->sess->targ_xfer_tag++ :
                         0xFFFFFFFF;
@@ -1222,7 +1222,7 @@ int iscsit_tx_login_rsp(struct iscsi_conn *conn, u8 status_class, u8 status_deta
         hdr->opcode             = ISCSI_OP_LOGIN_RSP;
         hdr->status_class       = status_class;
         hdr->status_detail      = status_detail;
-        hdr->itt                = cpu_to_be32(conn->login_itt);
+        hdr->itt                = conn->login_itt;
 
         iov.iov_base            = &iscsi_hdr;
         iov.iov_len             = ISCSI_HDR_LEN;
diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h
index e1c729b8a1c5..09e2f9f563a7 100644
--- a/drivers/target/iscsi/iscsi_target_util.h
+++ b/drivers/target/iscsi/iscsi_target_util.h
@@ -14,12 +14,12 @@ extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *);
 extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32);
 int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, u32 cmdsn);
 extern int iscsit_check_unsolicited_dataout(struct iscsi_cmd *, unsigned char *);
-extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, u32);
+extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, itt_t);
 extern struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsi_conn *,
-                        u32, u32);
+                        itt_t, u32);
 extern struct iscsi_cmd *iscsit_find_cmd_from_ttt(struct iscsi_conn *, u32);
 extern int iscsit_find_cmd_for_recovery(struct iscsi_session *, struct iscsi_cmd **,
-                        struct iscsi_conn_recovery **, u32);
+                        struct iscsi_conn_recovery **, itt_t);
 extern void iscsit_add_cmd_to_immediate_queue(struct iscsi_cmd *, struct iscsi_conn *, u8);
 extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsi_conn *);
 extern void iscsit_add_cmd_to_response_queue(struct iscsi_cmd *, struct iscsi_conn *, u8);