diff options
Diffstat (limited to 'drivers/target/target_core_configfs.c')
| -rw-r--r-- | drivers/target/target_core_configfs.c | 344 |
1 files changed, 91 insertions, 253 deletions
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 79f9296a08ae..75d89adfccc0 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -50,6 +50,19 @@ #include "target_core_rd.h" #include "target_core_xcopy.h" +#define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ +static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ +{ \ + struct target_backend_cits *tbc = &sa->tb_cits; \ + struct config_item_type *cit = &tbc->tb_##_name##_cit; \ + \ + cit->ct_item_ops = _item_ops; \ + cit->ct_group_ops = _group_ops; \ + cit->ct_attrs = _attrs; \ + cit->ct_owner = sa->owner; \ + pr_debug("Setup generic %s\n", __stringify(_name)); \ +} + extern struct t10_alua_lu_gp *default_lu_gp; static LIST_HEAD(g_tf_list); @@ -126,48 +139,57 @@ static struct config_group *target_core_register_fabric( pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" " %s\n", group, name); - /* - * Below are some hardcoded request_module() calls to automatically - * local fabric modules when the following is called: - * - * mkdir -p /sys/kernel/config/target/$MODULE_NAME - * - * Note that this does not limit which TCM fabric module can be - * registered, but simply provids auto loading logic for modules with - * mkdir(2) system calls with known TCM fabric modules. - */ - if (!strncmp(name, "iscsi", 5)) { + + tf = target_core_get_fabric(name); + if (!tf) { + pr_err("target_core_register_fabric() trying autoload for %s\n", + name); + /* - * Automatically load the LIO Target fabric module when the - * following is called: + * Below are some hardcoded request_module() calls to automatically + * local fabric modules when the following is called: * - * mkdir -p $CONFIGFS/target/iscsi - */ - ret = request_module("iscsi_target_mod"); - if (ret < 0) { - pr_err("request_module() failed for" - " iscsi_target_mod.ko: %d\n", ret); - return ERR_PTR(-EINVAL); - } - } else if (!strncmp(name, "loopback", 8)) { - /* - * Automatically load the tcm_loop fabric module when the - * following is called: + * mkdir -p /sys/kernel/config/target/$MODULE_NAME * - * mkdir -p $CONFIGFS/target/loopback + * Note that this does not limit which TCM fabric module can be + * registered, but simply provids auto loading logic for modules with + * mkdir(2) system calls with known TCM fabric modules. */ - ret = request_module("tcm_loop"); - if (ret < 0) { - pr_err("request_module() failed for" - " tcm_loop.ko: %d\n", ret); - return ERR_PTR(-EINVAL); + + if (!strncmp(name, "iscsi", 5)) { + /* + * Automatically load the LIO Target fabric module when the + * following is called: + * + * mkdir -p $CONFIGFS/target/iscsi + */ + ret = request_module("iscsi_target_mod"); + if (ret < 0) { + pr_err("request_module() failed for" + " iscsi_target_mod.ko: %d\n", ret); + return ERR_PTR(-EINVAL); + } + } else if (!strncmp(name, "loopback", 8)) { + /* + * Automatically load the tcm_loop fabric module when the + * following is called: + * + * mkdir -p $CONFIGFS/target/loopback + */ + ret = request_module("tcm_loop"); + if (ret < 0) { + pr_err("request_module() failed for" + " tcm_loop.ko: %d\n", ret); + return ERR_PTR(-EINVAL); + } } + + tf = target_core_get_fabric(name); } - tf = target_core_get_fabric(name); if (!tf) { pr_err("target_core_get_fabric() failed for %s\n", - name); + name); return ERR_PTR(-EINVAL); } pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" @@ -562,198 +584,21 @@ EXPORT_SYMBOL(target_fabric_configfs_deregister); // Stop functions called by external Target Fabrics Modules //############################################################################*/ -/* Start functions for struct config_item_type target_core_dev_attrib_cit */ - -#define DEF_DEV_ATTRIB_SHOW(_name) \ -static ssize_t target_core_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_DEV_ATTRIB_STORE(_name) \ -static ssize_t target_core_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_DEV_ATTRIB(_name) \ -DEF_DEV_ATTRIB_SHOW(_name); \ -DEF_DEV_ATTRIB_STORE(_name); - -#define DEF_DEV_ATTRIB_RO(_name) \ -DEF_DEV_ATTRIB_SHOW(_name); +/* Start functions for struct config_item_type tb_dev_attrib_cit */ CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); -#define SE_DEV_ATTR(_name, _mode) \ -static struct target_core_dev_attrib_attribute \ - target_core_dev_attrib_##_name = \ - __CONFIGFS_EATTR(_name, _mode, \ - target_core_dev_show_attr_##_name, \ - target_core_dev_store_attr_##_name); - -#define SE_DEV_ATTR_RO(_name); \ -static struct target_core_dev_attrib_attribute \ - target_core_dev_attrib_##_name = \ - __CONFIGFS_EATTR_RO(_name, \ - target_core_dev_show_attr_##_name); - -DEF_DEV_ATTRIB(emulate_model_alias); -SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_dpo); -SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_fua_write); -SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_fua_read); -SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_write_cache); -SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); -SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_tas); -SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_tpu); -SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_tpws); -SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_caw); -SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_3pc); -SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(pi_prot_type); -SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_pi_prot_type); -SE_DEV_ATTR_RO(hw_pi_prot_type); - -DEF_DEV_ATTRIB(pi_prot_format); -SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(enforce_pr_isids); -SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(is_nonrot); -SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(emulate_rest_reord); -SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(force_pr_aptpl); -SE_DEV_ATTR(force_pr_aptpl, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_block_size); -SE_DEV_ATTR_RO(hw_block_size); - -DEF_DEV_ATTRIB(block_size); -SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_max_sectors); -SE_DEV_ATTR_RO(hw_max_sectors); - -DEF_DEV_ATTRIB(fabric_max_sectors); -SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(optimal_sectors); -SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB_RO(hw_queue_depth); -SE_DEV_ATTR_RO(hw_queue_depth); - -DEF_DEV_ATTRIB(queue_depth); -SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(max_unmap_lba_count); -SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(max_unmap_block_desc_count); -SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(unmap_granularity); -SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(unmap_granularity_alignment); -SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); - -DEF_DEV_ATTRIB(max_write_same_len); -SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); - CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); -static struct configfs_attribute *target_core_dev_attrib_attrs[] = { - &target_core_dev_attrib_emulate_model_alias.attr, - &target_core_dev_attrib_emulate_dpo.attr, - &target_core_dev_attrib_emulate_fua_write.attr, - &target_core_dev_attrib_emulate_fua_read.attr, - &target_core_dev_attrib_emulate_write_cache.attr, - &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, - &target_core_dev_attrib_emulate_tas.attr, - &target_core_dev_attrib_emulate_tpu.attr, - &target_core_dev_attrib_emulate_tpws.attr, - &target_core_dev_attrib_emulate_caw.attr, - &target_core_dev_attrib_emulate_3pc.attr, - &target_core_dev_attrib_pi_prot_type.attr, - &target_core_dev_attrib_hw_pi_prot_type.attr, - &target_core_dev_attrib_pi_prot_format.attr, - &target_core_dev_attrib_enforce_pr_isids.attr, - &target_core_dev_attrib_force_pr_aptpl.attr, - &target_core_dev_attrib_is_nonrot.attr, - &target_core_dev_attrib_emulate_rest_reord.attr, - &target_core_dev_attrib_hw_block_size.attr, - &target_core_dev_attrib_block_size.attr, - &target_core_dev_attrib_hw_max_sectors.attr, - &target_core_dev_attrib_fabric_max_sectors.attr, - &target_core_dev_attrib_optimal_sectors.attr, - &target_core_dev_attrib_hw_queue_depth.attr, - &target_core_dev_attrib_queue_depth.attr, - &target_core_dev_attrib_max_unmap_lba_count.attr, - &target_core_dev_attrib_max_unmap_block_desc_count.attr, - &target_core_dev_attrib_unmap_granularity.attr, - &target_core_dev_attrib_unmap_granularity_alignment.attr, - &target_core_dev_attrib_max_write_same_len.attr, - NULL, -}; - static struct configfs_item_operations target_core_dev_attrib_ops = { .show_attribute = target_core_dev_attrib_attr_show, .store_attribute = target_core_dev_attrib_attr_store, }; -static struct config_item_type target_core_dev_attrib_cit = { - .ct_item_ops = &target_core_dev_attrib_ops, - .ct_attrs = target_core_dev_attrib_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, NULL); -/* End functions for struct config_item_type target_core_dev_attrib_cit */ +/* End functions for struct config_item_type tb_dev_attrib_cit */ -/* Start functions for struct config_item_type target_core_dev_wwn_cit */ +/* Start functions for struct config_item_type tb_dev_wwn_cit */ CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); #define SE_DEV_WWN_ATTR(_name, _mode) \ @@ -984,15 +829,11 @@ static struct configfs_item_operations target_core_dev_wwn_ops = { .store_attribute = target_core_dev_wwn_attr_store, }; -static struct config_item_type target_core_dev_wwn_cit = { - .ct_item_ops = &target_core_dev_wwn_ops, - .ct_attrs = target_core_dev_wwn_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); -/* End functions for struct config_item_type target_core_dev_wwn_cit */ +/* End functions for struct config_item_type tb_dev_wwn_cit */ -/* Start functions for struct config_item_type target_core_dev_pr_cit */ +/* Start functions for struct config_item_type tb_dev_pr_cit */ CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); #define SE_DEV_PR_ATTR(_name, _mode) \ @@ -1453,15 +1294,11 @@ static struct configfs_item_operations target_core_dev_pr_ops = { .store_attribute = target_core_dev_pr_attr_store, }; -static struct config_item_type target_core_dev_pr_cit = { - .ct_item_ops = &target_core_dev_pr_ops, - .ct_attrs = target_core_dev_pr_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); -/* End functions for struct config_item_type target_core_dev_pr_cit */ +/* End functions for struct config_item_type tb_dev_pr_cit */ -/* Start functions for struct config_item_type target_core_dev_cit */ +/* Start functions for struct config_item_type tb_dev_cit */ static ssize_t target_core_show_dev_info(void *p, char *page) { @@ -1925,7 +1762,7 @@ static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { .store = target_core_store_dev_lba_map, }; -static struct configfs_attribute *lio_core_dev_attrs[] = { +static struct configfs_attribute *target_core_dev_attrs[] = { &target_core_attr_dev_info.attr, &target_core_attr_dev_control.attr, &target_core_attr_dev_alias.attr, @@ -1984,13 +1821,9 @@ static struct configfs_item_operations target_core_dev_item_ops = { .store_attribute = target_core_dev_store, }; -static struct config_item_type target_core_dev_cit = { - .ct_item_ops = &target_core_dev_item_ops, - .ct_attrs = lio_core_dev_attrs, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); -/* End functions for struct config_item_type target_core_dev_cit */ +/* End functions for struct config_item_type tb_dev_cit */ /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ @@ -2670,7 +2503,7 @@ static struct config_item_type target_core_alua_tg_pt_gp_cit = { /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ -/* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ +/* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ static struct config_group *target_core_alua_create_tg_pt_gp( struct config_group *group, @@ -2721,12 +2554,9 @@ static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { .drop_item = &target_core_alua_drop_tg_pt_gp, }; -static struct config_item_type target_core_alua_tg_pt_gps_cit = { - .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); -/* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ +/* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ /* Start functions for struct config_item_type target_core_alua_cit */ @@ -2744,7 +2574,7 @@ static struct config_item_type target_core_alua_cit = { /* End functions for struct config_item_type target_core_alua_cit */ -/* Start functions for struct config_item_type target_core_stat_cit */ +/* Start functions for struct config_item_type tb_dev_stat_cit */ static struct config_group *target_core_stat_mkdir( struct config_group *group, @@ -2765,12 +2595,9 @@ static struct configfs_group_operations target_core_stat_group_ops = { .drop_item = &target_core_stat_rmdir, }; -static struct config_item_type target_core_stat_cit = { - .ct_group_ops = &target_core_stat_group_ops, - .ct_owner = THIS_MODULE, -}; +TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); -/* End functions for struct config_item_type target_core_stat_cit */ +/* End functions for struct config_item_type tb_dev_stat_cit */ /* Start functions for struct config_item_type target_core_hba_cit */ @@ -2806,17 +2633,17 @@ static struct config_group *target_core_make_subdev( if (!dev_cg->default_groups) goto out_free_device; - config_group_init_type_name(dev_cg, name, &target_core_dev_cit); + config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", - &target_core_dev_attrib_cit); + &t->tb_cits.tb_dev_attrib_cit); config_group_init_type_name(&dev->dev_pr_group, "pr", - &target_core_dev_pr_cit); + &t->tb_cits.tb_dev_pr_cit); config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", - &target_core_dev_wwn_cit); + &t->tb_cits.tb_dev_wwn_cit); config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, - "alua", &target_core_alua_tg_pt_gps_cit); + "alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit); config_group_init_type_name(&dev->dev_stat_grps.stat_group, - "statistics", &target_core_stat_cit); + "statistics", &t->tb_cits.tb_dev_stat_cit); dev_cg->default_groups[0] = &dev->dev_attrib.da_group; dev_cg->default_groups[1] = &dev->dev_pr_group; @@ -3110,6 +2937,17 @@ static struct config_item_type target_core_cit = { /* Stop functions for struct config_item_type target_core_hba_cit */ +void target_core_setup_sub_cits(struct se_subsystem_api *sa) +{ + target_core_setup_dev_cit(sa); + target_core_setup_dev_attrib_cit(sa); + target_core_setup_dev_pr_cit(sa); + target_core_setup_dev_wwn_cit(sa); + target_core_setup_dev_alua_tg_pt_gps_cit(sa); + target_core_setup_dev_stat_cit(sa); +} +EXPORT_SYMBOL(target_core_setup_sub_cits); + static int __init target_core_init_configfs(void) { struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; |