target: Remove unused target_core_fabric_ops.get_fabric_sense_len method

There are no callers of se_tfo->get_fabric_sense_len(), so we should
stop having every fabric driver implement it.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

Documentation/target/tcm_mod_builder.py

@@ -402,7 +402,6 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 	buf += "	.queue_data_in			= " + fabric_mod_name + "_queue_data_in,\n"
 	buf += "	.queue_status			= " + fabric_mod_name + "_queue_status,\n"
 	buf += "	.queue_tm_rsp			= " + fabric_mod_name + "_queue_tm_rsp,\n"
-	buf += "	.get_fabric_sense_len		= " + fabric_mod_name + "_get_fabric_sense_len,\n"
 	buf += "	.set_fabric_sense_len		= " + fabric_mod_name + "_set_fabric_sense_len,\n"
 	buf += "	.is_state_remove		= " + fabric_mod_name + "_is_state_remove,\n"
 	buf += "	/*\n"
@@ -906,13 +905,6 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 			buf += "}\n\n"
 			bufi += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n"
 
-		if re.search('get_fabric_sense_len\)\(', fo):
-			buf += "u16 " + fabric_mod_name + "_get_fabric_sense_len(void)\n"
-			buf += "{\n"
-			buf += "	return 0;\n"
-			buf += "}\n\n"
-			bufi += "u16 " + fabric_mod_name + "_get_fabric_sense_len(void);\n"
-
 		if re.search('set_fabric_sense_len\)\(', fo):
 			buf += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)\n"
 			buf += "{\n"

drivers/infiniband/ulp/srpt/ib_srpt.c

@@ -3569,11 +3569,6 @@ static u16 srpt_set_fabric_sense_len(struct se_cmd *cmd, u32 sense_length)
 	return 0;
 }
 
-static u16 srpt_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 /**
  * srpt_parse_i_port_id() - Parse an initiator port ID.
  * @name: ASCII representation of a 128-bit initiator port ID.
@@ -3953,7 +3948,6 @@ static struct target_core_fabric_ops srpt_template = {
 	.queue_data_in			= srpt_queue_response,
 	.queue_status			= srpt_queue_status,
 	.queue_tm_rsp			= srpt_queue_response,
-	.get_fabric_sense_len		= srpt_get_fabric_sense_len,
 	.set_fabric_sense_len		= srpt_set_fabric_sense_len,
 	/*
 	 * Setup function pointers for generic logic in

drivers/scsi/qla2xxx/tcm_qla2xxx.c

@@ -735,11 +735,6 @@ static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 	return 0;
 }
 
-static u16 tcm_qla2xxx_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
 					u32 sense_length)
 {
@@ -1691,7 +1686,6 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = {
 	.queue_data_in			= tcm_qla2xxx_queue_data_in,
 	.queue_status			= tcm_qla2xxx_queue_status,
 	.queue_tm_rsp			= tcm_qla2xxx_queue_tm_rsp,
-	.get_fabric_sense_len		= tcm_qla2xxx_get_fabric_sense_len,
 	.set_fabric_sense_len		= tcm_qla2xxx_set_fabric_sense_len,
 	/*
 	 * Setup function pointers for generic logic in
@@ -1740,7 +1734,6 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
 	.queue_data_in			= tcm_qla2xxx_queue_data_in,
 	.queue_status			= tcm_qla2xxx_queue_status,
 	.queue_tm_rsp			= tcm_qla2xxx_queue_tm_rsp,
-	.get_fabric_sense_len		= tcm_qla2xxx_get_fabric_sense_len,
 	.set_fabric_sense_len		= tcm_qla2xxx_set_fabric_sense_len,
 	/*
 	 * Setup function pointers for generic logic in

drivers/target/iscsi/iscsi_target_configfs.c

@@ -1557,14 +1557,6 @@ static u16 lio_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
 	return 2;
 }
 
-static u16 lio_get_fabric_sense_len(void)
-{
-	/*
-	 * Return two byte offset into allocated sense_buffer.
-	 */
-	return 2;
-}
-
 static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
 {
 	struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
@@ -1749,7 +1741,6 @@ int iscsi_target_register_configfs(void)
 	fabric->tf_ops.queue_status = &lio_queue_status;
 	fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
 	fabric->tf_ops.set_fabric_sense_len = &lio_set_fabric_sense_len;
-	fabric->tf_ops.get_fabric_sense_len = &lio_get_fabric_sense_len;
 	/*
 	 * Setup function pointers for generic logic in target_core_fabric_configfs.c
 	 */

drivers/target/loopback/tcm_loop.c

@@ -851,11 +851,6 @@ static u16 tcm_loop_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length
 	return 0;
 }
 
-static u16 tcm_loop_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 static char *tcm_loop_dump_proto_id(struct tcm_loop_hba *tl_hba)
 {
 	switch (tl_hba->tl_proto_id) {
@@ -1374,7 +1369,6 @@ static int tcm_loop_register_configfs(void)
 	fabric->tf_ops.queue_status = &tcm_loop_queue_status;
 	fabric->tf_ops.queue_tm_rsp = &tcm_loop_queue_tm_rsp;
 	fabric->tf_ops.set_fabric_sense_len = &tcm_loop_set_fabric_sense_len;
-	fabric->tf_ops.get_fabric_sense_len = &tcm_loop_get_fabric_sense_len;
 
 	/*
 	 * Setup function pointers for generic logic in target_core_fabric_configfs.c

drivers/target/sbp/sbp_target.c

@@ -1852,11 +1852,6 @@ static u16 sbp_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
 	return 0;
 }
 
-static u16 sbp_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 static int sbp_check_stop_free(struct se_cmd *se_cmd)
 {
 	struct sbp_target_request *req = container_of(se_cmd,
@@ -2534,7 +2529,6 @@ static struct target_core_fabric_ops sbp_ops = {
 	.queue_data_in			= sbp_queue_data_in,
 	.queue_status			= sbp_queue_status,
 	.queue_tm_rsp			= sbp_queue_tm_rsp,
-	.get_fabric_sense_len		= sbp_get_fabric_sense_len,
 	.set_fabric_sense_len		= sbp_set_fabric_sense_len,
 	.check_stop_free		= sbp_check_stop_free,
 

drivers/target/target_core_configfs.c

@@ -461,10 +461,6 @@ static int target_fabric_tf_ops_check(
 		pr_err("Missing tfo->set_fabric_sense_len()\n");
 		return -EINVAL;
 	}
-	if (!tfo->get_fabric_sense_len) {
-		pr_err("Missing tfo->get_fabric_sense_len()\n");
-		return -EINVAL;
-	}
 	/*
 	 * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
 	 * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in

drivers/target/tcm_fc/tfc_conf.c

@@ -495,11 +495,6 @@ static void ft_set_default_node_attr(struct se_node_acl *se_nacl)
 {
 }
 
-static u16 ft_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 static u16 ft_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_len)
 {
 	return 0;
@@ -542,7 +537,6 @@ static struct target_core_fabric_ops ft_fabric_ops = {
 	.queue_data_in =		ft_queue_data_in,
 	.queue_status =			ft_queue_status,
 	.queue_tm_rsp =			ft_queue_tm_resp,
-	.get_fabric_sense_len =		ft_get_fabric_sense_len,
 	.set_fabric_sense_len =		ft_set_fabric_sense_len,
 	/*
 	 * Setup function pointers for generic logic in

drivers/usb/gadget/tcm_usb_gadget.c

@@ -1480,11 +1480,6 @@ static u16 usbg_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
 	return 0;
 }
 
-static u16 usbg_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 static const char *usbg_check_wwn(const char *name)
 {
 	const char *n;
@@ -1910,7 +1905,6 @@ static struct target_core_fabric_ops usbg_ops = {
 	.queue_data_in			= usbg_send_read_response,
 	.queue_status			= usbg_send_status_response,
 	.queue_tm_rsp			= usbg_queue_tm_rsp,
-	.get_fabric_sense_len		= usbg_get_fabric_sense_len,
 	.set_fabric_sense_len		= usbg_set_fabric_sense_len,
 	.check_stop_free		= usbg_check_stop_free,
 

drivers/vhost/tcm_vhost.c

@@ -336,11 +336,6 @@ static u16 tcm_vhost_set_fabric_sense_len(struct se_cmd *se_cmd,
 	return 0;
 }
 
-static u16 tcm_vhost_get_fabric_sense_len(void)
-{
-	return 0;
-}
-
 static void vhost_scsi_free_cmd(struct tcm_vhost_cmd *tv_cmd)
 {
 	struct se_cmd *se_cmd = &tv_cmd->tvc_se_cmd;
@@ -1531,7 +1526,6 @@ static struct target_core_fabric_ops tcm_vhost_ops = {
 	.queue_data_in			= tcm_vhost_queue_data_in,
 	.queue_status			= tcm_vhost_queue_status,
 	.queue_tm_rsp			= tcm_vhost_queue_tm_rsp,
-	.get_fabric_sense_len		= tcm_vhost_get_fabric_sense_len,
 	.set_fabric_sense_len		= tcm_vhost_set_fabric_sense_len,
 	/*
 	 * Setup callers for generic logic in target_core_fabric_configfs.c

include/target/target_core_fabric.h

@@ -63,7 +63,6 @@ struct target_core_fabric_ops {
 	int (*queue_status)(struct se_cmd *);
 	int (*queue_tm_rsp)(struct se_cmd *);
 	u16 (*set_fabric_sense_len)(struct se_cmd *, u32);
-	u16 (*get_fabric_sense_len)(void);
 	/*
 	 * fabric module calls for target_core_fabric_configfs.c
 	 */