diff options
Diffstat (limited to 'drivers/nvme/target/configfs.c')
| -rw-r--r-- | drivers/nvme/target/configfs.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 051a420d818e..02797170dd91 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -1259,6 +1259,54 @@ static ssize_t nvmet_subsys_attr_model_store(struct config_item *item, } CONFIGFS_ATTR(nvmet_subsys_, attr_model); +static ssize_t nvmet_subsys_attr_ieee_oui_show(struct config_item *item, + char *page) +{ + struct nvmet_subsys *subsys = to_subsys(item); + + return sysfs_emit(page, "0x%06x\n", subsys->ieee_oui); +} + +static ssize_t nvmet_subsys_attr_ieee_oui_store_locked(struct nvmet_subsys *subsys, + const char *page, size_t count) +{ + uint32_t val = 0; + int ret; + + if (subsys->subsys_discovered) { + pr_err("Can't set IEEE OUI. 0x%06x is already assigned\n", + subsys->ieee_oui); + return -EINVAL; + } + + ret = kstrtou32(page, 0, &val); + if (ret < 0) + return ret; + + if (val >= 0x1000000) + return -EINVAL; + + subsys->ieee_oui = val; + + return count; +} + +static ssize_t nvmet_subsys_attr_ieee_oui_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_subsys *subsys = to_subsys(item); + ssize_t ret; + + down_write(&nvmet_config_sem); + mutex_lock(&subsys->lock); + ret = nvmet_subsys_attr_ieee_oui_store_locked(subsys, page, count); + mutex_unlock(&subsys->lock); + up_write(&nvmet_config_sem); + + return ret; +} +CONFIGFS_ATTR(nvmet_subsys_, attr_ieee_oui); + #ifdef CONFIG_BLK_DEV_INTEGRITY static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item, char *page) @@ -1320,6 +1368,7 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_cntlid_max, &nvmet_subsys_attr_attr_model, &nvmet_subsys_attr_attr_qid_max, + &nvmet_subsys_attr_attr_ieee_oui, #ifdef CONFIG_BLK_DEV_INTEGRITY &nvmet_subsys_attr_attr_pi_enable, #endif |