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-rw-r--r--include/target/target_core_backend.h43
-rw-r--r--include/target/target_core_backend_configfs.h120
-rw-r--r--include/uapi/linux/target_core_user.h4
3 files changed, 163 insertions, 4 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 9adc1bca1178..430cfaf92285 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -5,6 +5,15 @@
#define TRANSPORT_PLUGIN_VHBA_PDEV 2
#define TRANSPORT_PLUGIN_VHBA_VDEV 3
+struct target_backend_cits {
+ struct config_item_type tb_dev_cit;
+ struct config_item_type tb_dev_attrib_cit;
+ struct config_item_type tb_dev_pr_cit;
+ struct config_item_type tb_dev_wwn_cit;
+ struct config_item_type tb_dev_alua_tg_pt_gps_cit;
+ struct config_item_type tb_dev_stat_cit;
+};
+
struct se_subsystem_api {
struct list_head sub_api_list;
@@ -44,6 +53,8 @@ struct se_subsystem_api {
int (*init_prot)(struct se_device *);
int (*format_prot)(struct se_device *);
void (*free_prot)(struct se_device *);
+
+ struct target_backend_cits tb_cits;
};
struct sbc_ops {
@@ -96,4 +107,36 @@ sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
void array_free(void *array, int n);
+/* From target_core_configfs.c to setup default backend config_item_types */
+void target_core_setup_sub_cits(struct se_subsystem_api *);
+
+/* attribute helpers from target_core_device.c for backend drivers */
+int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
+int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
+int se_dev_set_unmap_granularity(struct se_device *, u32);
+int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
+int se_dev_set_max_write_same_len(struct se_device *, u32);
+int se_dev_set_emulate_model_alias(struct se_device *, int);
+int se_dev_set_emulate_dpo(struct se_device *, int);
+int se_dev_set_emulate_fua_write(struct se_device *, int);
+int se_dev_set_emulate_fua_read(struct se_device *, int);
+int se_dev_set_emulate_write_cache(struct se_device *, int);
+int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
+int se_dev_set_emulate_tas(struct se_device *, int);
+int se_dev_set_emulate_tpu(struct se_device *, int);
+int se_dev_set_emulate_tpws(struct se_device *, int);
+int se_dev_set_emulate_caw(struct se_device *, int);
+int se_dev_set_emulate_3pc(struct se_device *, int);
+int se_dev_set_pi_prot_type(struct se_device *, int);
+int se_dev_set_pi_prot_format(struct se_device *, int);
+int se_dev_set_enforce_pr_isids(struct se_device *, int);
+int se_dev_set_force_pr_aptpl(struct se_device *, int);
+int se_dev_set_is_nonrot(struct se_device *, int);
+int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
+int se_dev_set_queue_depth(struct se_device *, u32);
+int se_dev_set_max_sectors(struct se_device *, u32);
+int se_dev_set_fabric_max_sectors(struct se_device *, u32);
+int se_dev_set_optimal_sectors(struct se_device *, u32);
+int se_dev_set_block_size(struct se_device *, u32);
+
#endif /* TARGET_CORE_BACKEND_H */
diff --git a/include/target/target_core_backend_configfs.h b/include/target/target_core_backend_configfs.h
new file mode 100644
index 000000000000..3247d7530107
--- /dev/null
+++ b/include/target/target_core_backend_configfs.h
@@ -0,0 +1,120 @@
+#ifndef TARGET_CORE_BACKEND_CONFIGFS_H
+#define TARGET_CORE_BACKEND_CONFIGFS_H
+
+#include <target/configfs_macros.h>
+
+#define DEF_TB_DEV_ATTRIB_SHOW(_backend, _name) \
+static ssize_t _backend##_dev_show_attr_##_name( \
+ struct se_dev_attrib *da, \
+ char *page) \
+{ \
+ return snprintf(page, PAGE_SIZE, "%u\n", \
+ (u32)da->da_dev->dev_attrib._name); \
+}
+
+#define DEF_TB_DEV_ATTRIB_STORE(_backend, _name) \
+static ssize_t _backend##_dev_store_attr_##_name( \
+ struct se_dev_attrib *da, \
+ const char *page, \
+ size_t count) \
+{ \
+ unsigned long val; \
+ int ret; \
+ \
+ ret = kstrtoul(page, 0, &val); \
+ if (ret < 0) { \
+ pr_err("kstrtoul() failed with ret: %d\n", ret); \
+ return -EINVAL; \
+ } \
+ ret = se_dev_set_##_name(da->da_dev, (u32)val); \
+ \
+ return (!ret) ? count : -EINVAL; \
+}
+
+#define DEF_TB_DEV_ATTRIB(_backend, _name) \
+DEF_TB_DEV_ATTRIB_SHOW(_backend, _name); \
+DEF_TB_DEV_ATTRIB_STORE(_backend, _name);
+
+#define DEF_TB_DEV_ATTRIB_RO(_backend, name) \
+DEF_TB_DEV_ATTRIB_SHOW(_backend, name);
+
+CONFIGFS_EATTR_STRUCT(target_backend_dev_attrib, se_dev_attrib);
+#define TB_DEV_ATTR(_backend, _name, _mode) \
+static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \
+ __CONFIGFS_EATTR(_name, _mode, \
+ _backend##_dev_show_attr_##_name, \
+ _backend##_dev_store_attr_##_name);
+
+#define TB_DEV_ATTR_RO(_backend, _name) \
+static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \
+ __CONFIGFS_EATTR_RO(_name, \
+ _backend##_dev_show_attr_##_name);
+
+/*
+ * Default list of target backend device attributes as defined by
+ * struct se_dev_attrib
+ */
+
+#define DEF_TB_DEFAULT_ATTRIBS(_backend) \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_model_alias); \
+ TB_DEV_ATTR(_backend, emulate_model_alias, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_dpo); \
+ TB_DEV_ATTR(_backend, emulate_dpo, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_fua_write); \
+ TB_DEV_ATTR(_backend, emulate_fua_write, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_fua_read); \
+ TB_DEV_ATTR(_backend, emulate_fua_read, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_write_cache); \
+ TB_DEV_ATTR(_backend, emulate_write_cache, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_ua_intlck_ctrl); \
+ TB_DEV_ATTR(_backend, emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_tas); \
+ TB_DEV_ATTR(_backend, emulate_tas, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_tpu); \
+ TB_DEV_ATTR(_backend, emulate_tpu, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_tpws); \
+ TB_DEV_ATTR(_backend, emulate_tpws, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_caw); \
+ TB_DEV_ATTR(_backend, emulate_caw, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_3pc); \
+ TB_DEV_ATTR(_backend, emulate_3pc, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, pi_prot_type); \
+ TB_DEV_ATTR(_backend, pi_prot_type, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB_RO(_backend, hw_pi_prot_type); \
+ TB_DEV_ATTR_RO(_backend, hw_pi_prot_type); \
+ DEF_TB_DEV_ATTRIB(_backend, pi_prot_format); \
+ TB_DEV_ATTR(_backend, pi_prot_format, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, enforce_pr_isids); \
+ TB_DEV_ATTR(_backend, enforce_pr_isids, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, is_nonrot); \
+ TB_DEV_ATTR(_backend, is_nonrot, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, emulate_rest_reord); \
+ TB_DEV_ATTR(_backend, emulate_rest_reord, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, force_pr_aptpl); \
+ TB_DEV_ATTR(_backend, force_pr_aptpl, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB_RO(_backend, hw_block_size); \
+ TB_DEV_ATTR_RO(_backend, hw_block_size); \
+ DEF_TB_DEV_ATTRIB(_backend, block_size); \
+ TB_DEV_ATTR(_backend, block_size, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB_RO(_backend, hw_max_sectors); \
+ TB_DEV_ATTR_RO(_backend, hw_max_sectors); \
+ DEF_TB_DEV_ATTRIB(_backend, fabric_max_sectors); \
+ TB_DEV_ATTR(_backend, fabric_max_sectors, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, optimal_sectors); \
+ TB_DEV_ATTR(_backend, optimal_sectors, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB_RO(_backend, hw_queue_depth); \
+ TB_DEV_ATTR_RO(_backend, hw_queue_depth); \
+ DEF_TB_DEV_ATTRIB(_backend, queue_depth); \
+ TB_DEV_ATTR(_backend, queue_depth, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, max_unmap_lba_count); \
+ TB_DEV_ATTR(_backend, max_unmap_lba_count, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, max_unmap_block_desc_count); \
+ TB_DEV_ATTR(_backend, max_unmap_block_desc_count, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, unmap_granularity); \
+ TB_DEV_ATTR(_backend, unmap_granularity, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, unmap_granularity_alignment); \
+ TB_DEV_ATTR(_backend, unmap_granularity_alignment, S_IRUGO | S_IWUSR); \
+ DEF_TB_DEV_ATTRIB(_backend, max_write_same_len); \
+ TB_DEV_ATTR(_backend, max_write_same_len, S_IRUGO | S_IWUSR);
+
+#endif /* TARGET_CORE_BACKEND_CONFIGFS_H */
diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h
index 7dcfbe6771b1..b483d1909d3e 100644
--- a/include/uapi/linux/target_core_user.h
+++ b/include/uapi/linux/target_core_user.h
@@ -6,10 +6,6 @@
#include <linux/types.h>
#include <linux/uio.h>
-#ifndef __packed
-#define __packed __attribute__((packed))
-#endif
-
#define TCMU_VERSION "1.0"
/*