diff options
Diffstat (limited to 'drivers/target/target_core_configfs.c')
| -rw-r--r-- | drivers/target/target_core_configfs.c | 82 |
1 files changed, 73 insertions, 9 deletions
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index ff82b21fdcce..f04352285155 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -1099,21 +1099,73 @@ static ssize_t block_size_store(struct config_item *item, static ssize_t alua_support_show(struct config_item *item, char *page) { struct se_dev_attrib *da = to_attrib(item); - u8 flags = da->da_dev->transport->transport_flags; + u8 flags = da->da_dev->transport_flags; return snprintf(page, PAGE_SIZE, "%d\n", flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1); } +static ssize_t alua_support_store(struct config_item *item, + const char *page, size_t count) +{ + struct se_dev_attrib *da = to_attrib(item); + struct se_device *dev = da->da_dev; + bool flag; + int ret; + + if (!(dev->transport->transport_flags_changeable & + TRANSPORT_FLAG_PASSTHROUGH_ALUA)) { + pr_err("dev[%p]: Unable to change SE Device alua_support:" + " alua_support has fixed value\n", dev); + return -EINVAL; + } + + ret = strtobool(page, &flag); + if (ret < 0) + return ret; + + if (flag) + dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_ALUA; + else + dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_ALUA; + return count; +} + static ssize_t pgr_support_show(struct config_item *item, char *page) { struct se_dev_attrib *da = to_attrib(item); - u8 flags = da->da_dev->transport->transport_flags; + u8 flags = da->da_dev->transport_flags; return snprintf(page, PAGE_SIZE, "%d\n", flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); } +static ssize_t pgr_support_store(struct config_item *item, + const char *page, size_t count) +{ + struct se_dev_attrib *da = to_attrib(item); + struct se_device *dev = da->da_dev; + bool flag; + int ret; + + if (!(dev->transport->transport_flags_changeable & + TRANSPORT_FLAG_PASSTHROUGH_PGR)) { + pr_err("dev[%p]: Unable to change SE Device pgr_support:" + " pgr_support has fixed value\n", dev); + return -EINVAL; + } + + ret = strtobool(page, &flag); + if (ret < 0) + return ret; + + if (flag) + dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_PGR; + else + dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_PGR; + return count; +} + CONFIGFS_ATTR(, emulate_model_alias); CONFIGFS_ATTR(, emulate_dpo); CONFIGFS_ATTR(, emulate_fua_write); @@ -1146,8 +1198,8 @@ CONFIGFS_ATTR(, unmap_granularity); CONFIGFS_ATTR(, unmap_granularity_alignment); CONFIGFS_ATTR(, unmap_zeroes_data); CONFIGFS_ATTR(, max_write_same_len); -CONFIGFS_ATTR_RO(, alua_support); -CONFIGFS_ATTR_RO(, pgr_support); +CONFIGFS_ATTR(, alua_support); +CONFIGFS_ATTR(, pgr_support); /* * dev_attrib attributes for devices using the target core SBC/SPC @@ -1203,12 +1255,24 @@ struct configfs_attribute *passthrough_attrib_attrs[] = { &attr_hw_block_size, &attr_hw_max_sectors, &attr_hw_queue_depth, + &attr_emulate_pr, &attr_alua_support, &attr_pgr_support, NULL, }; EXPORT_SYMBOL(passthrough_attrib_attrs); +/* + * pr related dev_attrib attributes for devices passing through CDBs, + * but allowing in core pr emulation. + */ +struct configfs_attribute *passthrough_pr_attrib_attrs[] = { + &attr_enforce_pr_isids, + &attr_force_pr_aptpl, + NULL, +}; +EXPORT_SYMBOL(passthrough_pr_attrib_attrs); + TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); TB_CIT_SETUP_DRV(dev_action, NULL, NULL); @@ -1642,7 +1706,7 @@ static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) if (!dev->dev_attrib.emulate_pr) return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); - if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) + if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) return sprintf(page, "Passthrough\n"); spin_lock(&dev->dev_reservation_lock); @@ -1784,7 +1848,7 @@ static ssize_t target_pr_res_type_show(struct config_item *item, char *page) if (!dev->dev_attrib.emulate_pr) return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); - if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) + if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) return sprintf(page, "SPC_PASSTHROUGH\n"); if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) return sprintf(page, "SPC2_RESERVATIONS\n"); @@ -1798,7 +1862,7 @@ static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, struct se_device *dev = pr_to_dev(item); if (!dev->dev_attrib.emulate_pr || - (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) + (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) return 0; return sprintf(page, "APTPL Bit Status: %s\n", @@ -1811,7 +1875,7 @@ static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, struct se_device *dev = pr_to_dev(item); if (!dev->dev_attrib.emulate_pr || - (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) + (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) return 0; return sprintf(page, "Ready to process PR APTPL metadata..\n"); @@ -1858,7 +1922,7 @@ static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, u8 type = 0; if (!dev->dev_attrib.emulate_pr || - (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) + (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) return count; if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) return count; |