@@ -578,6 +578,12 @@ DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data);
DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len);
DEF_CONFIGFS_ATTRIB_SHOW(emulate_rsoc);
DEF_CONFIGFS_ATTRIB_SHOW(submit_type);
+DEF_CONFIGFS_ATTRIB_SHOW(atomic_supported);
+DEF_CONFIGFS_ATTRIB_SHOW(atomic_alignment);
+DEF_CONFIGFS_ATTRIB_SHOW(atomic_max_len);
+DEF_CONFIGFS_ATTRIB_SHOW(atomic_granularity);
+DEF_CONFIGFS_ATTRIB_SHOW(atomic_max_with_boundary);
+DEF_CONFIGFS_ATTRIB_SHOW(atomic_max_boundary);
#define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \
static ssize_t _name##_store(struct config_item *item, const char *page,\
@@ -1266,6 +1272,30 @@ static ssize_t submit_type_store(struct config_item *item, const char *page,
return count;
}
+static ssize_t atomic_alignment_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct se_dev_attrib *da = to_attrib(item);
+ u32 val;
+ int ret;
+
+ ret = kstrtou32(page, 0, &val);
+ if (ret < 0)
+ return ret;
+
+ if (da->da_dev->export_count) {
+ pr_err("dev[%p]: Unable to change SE Device atomic_alignment while export_count is %d\n",
+ da->da_dev, da->da_dev->export_count);
+ return -EINVAL;
+ }
+
+ da->atomic_alignment = val;
+
+ pr_debug("dev[%p]: SE Device atomic_alignment changed to %u\n",
+ da->da_dev, val);
+ return count;
+}
+
CONFIGFS_ATTR(, emulate_model_alias);
CONFIGFS_ATTR(, emulate_dpo);
CONFIGFS_ATTR(, emulate_fua_write);
@@ -1302,6 +1332,12 @@ CONFIGFS_ATTR(, max_write_same_len);
CONFIGFS_ATTR(, alua_support);
CONFIGFS_ATTR(, pgr_support);
CONFIGFS_ATTR(, submit_type);
+CONFIGFS_ATTR(, atomic_alignment);
+CONFIGFS_ATTR_RO(, atomic_supported);
+CONFIGFS_ATTR_RO(, atomic_max_len);
+CONFIGFS_ATTR_RO(, atomic_granularity);
+CONFIGFS_ATTR_RO(, atomic_max_with_boundary);
+CONFIGFS_ATTR_RO(, atomic_max_boundary);
/*
* dev_attrib attributes for devices using the target core SBC/SPC
@@ -1345,6 +1381,12 @@ struct configfs_attribute *sbc_attrib_attrs[] = {
&attr_pgr_support,
&attr_emulate_rsoc,
&attr_submit_type,
+ &attr_atomic_supported,
+ &attr_atomic_alignment,
+ &attr_atomic_max_len,
+ &attr_atomic_granularity,
+ &attr_atomic_max_with_boundary,
+ &attr_atomic_max_boundary,
NULL,
};
EXPORT_SYMBOL(sbc_attrib_attrs);
@@ -715,6 +715,7 @@ struct se_dev_attrib {
bool is_nonrot;
bool emulate_rest_reord;
bool unmap_zeroes_data;
+ bool atomic_supported;
u32 hw_block_size;
u32 block_size;
u32 hw_max_sectors;
@@ -726,6 +727,11 @@ struct se_dev_attrib {
u32 unmap_granularity;
u32 unmap_granularity_alignment;
u32 max_write_same_len;
+ u32 atomic_max_len;
+ u32 atomic_alignment;
+ u32 atomic_granularity;
+ u32 atomic_max_with_boundary;
+ u32 atomic_max_boundary;
u8 submit_type;
struct se_device *da_dev;
struct config_group da_group;
This adds atomic fields to the se_device and exports them in configfs. Initially only target_core_iblock will be supported and we will inherit all the settings from the block layer except the alignment which userspace will set. Signed-off-by: Mike Christie <michael.christie@oracle.com> --- drivers/target/target_core_configfs.c | 42 +++++++++++++++++++++++++++ include/target/target_core_base.h | 6 ++++ 2 files changed, 48 insertions(+)