scsi: iscsi: Declare SCSI host template const

Make it explicit that the SCSI host template is not modified.
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230322195515.1267197-50-bvanassche@acm.orgSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/infiniband/ulp/iser/iscsi_iser.c

@@ -78,7 +78,7 @@ MODULE_DESCRIPTION("iSER (iSCSI Extensions for RDMA) Datamover");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Alex Nezhinsky, Dan Bar Dov, Or Gerlitz");
 
-static struct scsi_host_template iscsi_iser_sht;
+static const struct scsi_host_template iscsi_iser_sht;
 static struct iscsi_transport iscsi_iser_transport;
 static struct scsi_transport_template *iscsi_iser_scsi_transport;
 static struct workqueue_struct *release_wq;
@@ -956,7 +956,7 @@ static umode_t iser_attr_is_visible(int param_type, int param)
 	return 0;
 }
 
-static struct scsi_host_template iscsi_iser_sht = {
+static const struct scsi_host_template iscsi_iser_sht = {
 	.module                 = THIS_MODULE,
 	.name                   = "iSCSI Initiator over iSER",
 	.queuecommand           = iscsi_queuecommand,

drivers/scsi/be2iscsi/be_main.c

@@ -398,7 +398,7 @@ static const struct pci_device_id beiscsi_pci_id_table[] = {
 MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table);
 
 
-static struct scsi_host_template beiscsi_sht = {
+static const struct scsi_host_template beiscsi_sht = {
 	.module = THIS_MODULE,
 	.name = "Emulex 10Gbe open-iscsi Initiator Driver",
 	.proc_name = DRV_NAME,

drivers/scsi/bnx2i/bnx2i_iscsi.c

@@ -22,7 +22,7 @@
 
 struct scsi_transport_template *bnx2i_scsi_xport_template;
 struct iscsi_transport bnx2i_iscsi_transport;
-static struct scsi_host_template bnx2i_host_template;
+static const struct scsi_host_template bnx2i_host_template;
 
 /*
  * Global endpoint resource info
@@ -2250,7 +2250,7 @@ static umode_t bnx2i_attr_is_visible(int param_type, int param)
  * 'Scsi_Host_Template' structure and 'iscsi_tranport' structure template
  * used while registering with the scsi host and iSCSI transport module.
  */
-static struct scsi_host_template bnx2i_host_template = {
+static const struct scsi_host_template bnx2i_host_template = {
 	.module			= THIS_MODULE,
 	.name			= "QLogic Offload iSCSI Initiator",
 	.proc_name		= "bnx2i",

drivers/scsi/cxgbi/cxgb3i/cxgb3i.c

@@ -80,7 +80,7 @@ static struct cxgb3_client t3_client = {
 	.event_handler = cxgb3i_dev_event_handler,
 };
 
-static struct scsi_host_template cxgb3i_host_template = {
+static const struct scsi_host_template cxgb3i_host_template = {
 	.module		= THIS_MODULE,
 	.name		= DRV_MODULE_NAME,
 	.proc_name	= DRV_MODULE_NAME,

drivers/scsi/cxgbi/libcxgbi.c

@@ -337,7 +337,7 @@ void cxgbi_hbas_remove(struct cxgbi_device *cdev)
 EXPORT_SYMBOL_GPL(cxgbi_hbas_remove);
 
 int cxgbi_hbas_add(struct cxgbi_device *cdev, u64 max_lun,
-		unsigned int max_conns, struct scsi_host_template *sht,
+		unsigned int max_conns, const struct scsi_host_template *sht,
 		struct scsi_transport_template *stt)
 {
 	struct cxgbi_hba *chba;

drivers/scsi/cxgbi/libcxgbi.h

@@ -591,7 +591,7 @@ struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *);
 struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *,
 						     int *);
 int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int,
-			struct scsi_host_template *,
+			const struct scsi_host_template *,
 			struct scsi_transport_template *);
 void cxgbi_hbas_remove(struct cxgbi_device *);
 

drivers/scsi/iscsi_tcp.c

@@ -47,7 +47,7 @@ MODULE_DESCRIPTION("iSCSI/TCP data-path");
 MODULE_LICENSE("GPL");
 
 static struct scsi_transport_template *iscsi_sw_tcp_scsi_transport;
-static struct scsi_host_template iscsi_sw_tcp_sht;
+static const struct scsi_host_template iscsi_sw_tcp_sht;
 static struct iscsi_transport iscsi_sw_tcp_transport;
 
 static unsigned int iscsi_max_lun = ~0;
@@ -1072,7 +1072,7 @@ static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev)
 	return 0;
 }
 
-static struct scsi_host_template iscsi_sw_tcp_sht = {
+static const struct scsi_host_template iscsi_sw_tcp_sht = {
 	.module			= THIS_MODULE,
 	.name			= "iSCSI Initiator over TCP/IP",
 	.queuecommand           = iscsi_queuecommand,

drivers/scsi/libiscsi.c

@@ -2895,7 +2895,7 @@ EXPORT_SYMBOL_GPL(iscsi_host_add);
  * This should be called by partial offload and software iscsi drivers.
  * To access the driver specific memory use the iscsi_host_priv() macro.
  */
-struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht,
+struct Scsi_Host *iscsi_host_alloc(const struct scsi_host_template *sht,
 				   int dd_data_size, bool xmit_can_sleep)
 {
 	struct Scsi_Host *shost;

drivers/scsi/qedi/qedi_gbl.h

@@ -17,7 +17,7 @@ extern int qedi_do_not_recover;
 
 extern uint qedi_io_tracing;
 
-extern struct scsi_host_template qedi_host_template;
+extern const struct scsi_host_template qedi_host_template;
 extern struct iscsi_transport qedi_iscsi_transport;
 extern const struct qed_iscsi_ops *qedi_ops;
 extern const struct qedi_debugfs_ops qedi_debugfs_ops[];

drivers/scsi/qedi/qedi_iscsi.c

@@ -40,7 +40,7 @@ static int qedi_eh_host_reset(struct scsi_cmnd *cmd)
 	return qedi_recover_all_conns(qedi);
 }
 
-struct scsi_host_template qedi_host_template = {
+const struct scsi_host_template qedi_host_template = {
 	.module = THIS_MODULE,
 	.name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver",
 	.proc_name = QEDI_MODULE_NAME,

include/scsi/libiscsi.h

@@ -407,7 +407,7 @@ extern int iscsi_host_set_param(struct Scsi_Host *shost,
 extern int iscsi_host_get_param(struct Scsi_Host *shost,
 				enum iscsi_host_param param, char *buf);
 extern int iscsi_host_add(struct Scsi_Host *shost, struct device *pdev);
-extern struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht,
+extern struct Scsi_Host *iscsi_host_alloc(const struct scsi_host_template *sht,
 					  int dd_data_size,
 					  bool xmit_can_sleep);
 extern void iscsi_host_remove(struct Scsi_Host *shost, bool is_shutdown);