target: Use a PASSTHROUGH flag instead of transport_types

It seems like we only care if a transport is passthrough or not. Convert
transport_type to a flags field and replace TRANSPORT_PLUGIN_* with a
flag, TRANSPORT_FLAG_PASSTHROUGH.

Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c
index 75cbde1..4f8d4d4 100644 (file)
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -704,7 +704,7 @@ target_alua_state_check(struct se_cmd *cmd)
 
        if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)
                return 0;
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return 0;
 
        if (!port)
@@ -2377,7 +2377,7 @@ ssize_t core_alua_store_secondary_write_metadata(
 
 int core_setup_alua(struct se_device *dev)
 {
-       if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV &&
+       if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) &&
            !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) {
                struct t10_alua_lu_gp_member *lu_gp_mem;
 

diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 1580077..e7b0430 100644 (file)
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -811,7 +811,7 @@ static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev,
 {
        int ret;
 
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return sprintf(page, "Passthrough\n");
 
        spin_lock(&dev->dev_reservation_lock);
@@ -962,7 +962,7 @@ SE_DEV_PR_ATTR_RO(res_pr_type);
 static ssize_t target_core_dev_pr_show_attr_res_type(
                struct se_device *dev, char *page)
 {
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return sprintf(page, "SPC_PASSTHROUGH\n");
        else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
                return sprintf(page, "SPC2_RESERVATIONS\n");
@@ -975,7 +975,7 @@ SE_DEV_PR_ATTR_RO(res_type);
 static ssize_t target_core_dev_pr_show_attr_res_aptpl_active(
                struct se_device *dev, char *page)
 {
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return 0;
 
        return sprintf(page, "APTPL Bit Status: %s\n",
@@ -990,7 +990,7 @@ SE_DEV_PR_ATTR_RO(res_aptpl_active);
 static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata(
                struct se_device *dev, char *page)
 {
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return 0;
 
        return sprintf(page, "Ready to process PR APTPL metadata..\n");
@@ -1037,7 +1037,7 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
        u16 port_rpti = 0, tpgt = 0;
        u8 type = 0, scope;
 
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return 0;
        if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
                return 0;

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 56b20dc..ce5f768 100644 (file)
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -528,7 +528,7 @@ static void core_export_port(
        list_add_tail(&port->sep_list, &dev->dev_sep_list);
        spin_unlock(&dev->se_port_lock);
 
-       if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV &&
+       if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) &&
            !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) {
                tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port);
                if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) {
@@ -1604,7 +1604,7 @@ int target_configure_device(struct se_device *dev)
         * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI
         * passthrough because this is being provided by the backend LLD.
         */
-       if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) {
+       if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) {
                strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8);
                strncpy(&dev->t10_wwn.model[0],
                        dev->transport->inquiry_prod, 16);

diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index f7e6e51..3f27bfd 100644 (file)
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -958,7 +958,6 @@ static struct se_subsystem_api fileio_template = {
        .inquiry_prod           = "FILEIO",
        .inquiry_rev            = FD_VERSION,
        .owner                  = THIS_MODULE,
-       .transport_type         = TRANSPORT_PLUGIN_VHBA_PDEV,
        .attach_hba             = fd_attach_hba,
        .detach_hba             = fd_detach_hba,
        .alloc_device           = fd_alloc_device,

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 1b7947c..8c96568 100644 (file)
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -904,7 +904,6 @@ static struct se_subsystem_api iblock_template = {
        .inquiry_prod           = "IBLOCK",
        .inquiry_rev            = IBLOCK_VERSION,
        .owner                  = THIS_MODULE,
-       .transport_type         = TRANSPORT_PLUGIN_VHBA_PDEV,
        .attach_hba             = iblock_attach_hba,
        .detach_hba             = iblock_detach_hba,
        .alloc_device           = iblock_alloc_device,

diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index b7c81ac..a15411c 100644 (file)
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -4093,7 +4093,7 @@ target_check_reservation(struct se_cmd *cmd)
                return 0;
        if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)
                return 0;
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return 0;
 
        spin_lock(&dev->dev_reservation_lock);

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 53bd0eb..ecc5eae 100644 (file)
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -1141,7 +1141,7 @@ static struct configfs_attribute *pscsi_backend_dev_attrs[] = {
 static struct se_subsystem_api pscsi_template = {
        .name                   = "pscsi",
        .owner                  = THIS_MODULE,
-       .transport_type         = TRANSPORT_PLUGIN_PHBA_PDEV,
+       .transport_flags        = TRANSPORT_FLAG_PASSTHROUGH,
        .attach_hba             = pscsi_attach_hba,
        .detach_hba             = pscsi_detach_hba,
        .pmode_enable_hba       = pscsi_pmode_enable_hba,

diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index a263bf5..d16489b 100644 (file)
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -733,7 +733,6 @@ static struct se_subsystem_api rd_mcp_template = {
        .name                   = "rd_mcp",
        .inquiry_prod           = "RAMDISK-MCP",
        .inquiry_rev            = RD_MCP_VERSION,
-       .transport_type         = TRANSPORT_PLUGIN_VHBA_VDEV,
        .attach_hba             = rd_attach_hba,
        .detach_hba             = rd_detach_hba,
        .alloc_device           = rd_alloc_device,

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 90c92f0..675f2d9 100644 (file)
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1196,7 +1196,7 @@ transport_check_alloc_task_attr(struct se_cmd *cmd)
         * Check if SAM Task Attribute emulation is enabled for this
         * struct se_device storage object
         */
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return 0;
 
        if (cmd->sam_task_attr == TCM_ACA_TAG) {
@@ -1787,7 +1787,7 @@ static bool target_handle_task_attr(struct se_cmd *cmd)
 {
        struct se_device *dev = cmd->se_dev;
 
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return false;
 
        /*
@@ -1912,7 +1912,7 @@ static void transport_complete_task_attr(struct se_cmd *cmd)
 {
        struct se_device *dev = cmd->se_dev;
 
-       if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+       if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
                return;
 
        if (cmd->sam_task_attr == TCM_SIMPLE_TAG) {

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 2768ea2..07d2996 100644 (file)
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -1077,7 +1077,7 @@ static struct se_subsystem_api tcmu_template = {
        .inquiry_prod           = "USER",
        .inquiry_rev            = TCMU_VERSION,
        .owner                  = THIS_MODULE,
-       .transport_type         = TRANSPORT_PLUGIN_PHBA_PDEV,
+       .transport_flags        = TRANSPORT_FLAG_PASSTHROUGH,
        .attach_hba             = tcmu_attach_hba,
        .detach_hba             = tcmu_detach_hba,
        .alloc_device           = tcmu_alloc_device,

diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 563e119..5f12257 100644 (file)
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -1,9 +1,7 @@
 #ifndef TARGET_CORE_BACKEND_H
 #define TARGET_CORE_BACKEND_H
 
-#define TRANSPORT_PLUGIN_PHBA_PDEV             1
-#define TRANSPORT_PLUGIN_VHBA_PDEV             2
-#define TRANSPORT_PLUGIN_VHBA_VDEV             3
+#define TRANSPORT_FLAG_PASSTHROUGH             1
 
 struct target_backend_cits {
        struct config_item_type tb_dev_cit;
@@ -22,7 +20,7 @@ struct se_subsystem_api {
        char inquiry_rev[4];
        struct module *owner;
 
-       u8 transport_type;
+       u8 transport_flags;
 
        int (*attach_hba)(struct se_hba *, u32);
        void (*detach_hba)(struct se_hba *);