/******************************************************************************* * Filename: target_core_fabric_configfs.c * * This file contains generic fabric module configfs infrastructure for * TCM v4.x code * * (c) Copyright 2010-2012 RisingTide Systems LLC. * * Nicholas A. Bellinger * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "target_core_internal.h" #include "target_core_alua.h" #include "target_core_pr.h" #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \ { \ struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \ struct config_item_type *cit = &tfc->tfc_##_name##_cit; \ \ cit->ct_item_ops = _item_ops; \ cit->ct_group_ops = _group_ops; \ cit->ct_attrs = _attrs; \ cit->ct_owner = tf->tf_module; \ pr_debug("Setup generic %s\n", __stringify(_name)); \ } /* Start of tfc_tpg_mappedlun_cit */ static int target_fabric_mappedlun_link( struct config_item *lun_acl_ci, struct config_item *lun_ci) { struct se_dev_entry *deve; struct se_lun *lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci), struct se_lun_acl, se_lun_group); struct se_portal_group *se_tpg; struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s; int ret = 0, lun_access; /* * Ensure that the source port exists */ if (!lun->lun_sep || !lun->lun_sep->sep_tpg) { pr_err("Source se_lun->lun_sep or lun->lun_sep->sep" "_tpg does not exist\n"); return -EINVAL; } se_tpg = lun->lun_sep->sep_tpg; nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item; tpg_ci = &nacl_ci->ci_group->cg_item; wwn_ci = &tpg_ci->ci_group->cg_item; tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item; wwn_ci_s = &tpg_ci_s->ci_group->cg_item; /* * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT */ if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) { pr_err("Illegal Initiator ACL SymLink outside of %s\n", config_item_name(wwn_ci)); return -EINVAL; } if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) { pr_err("Illegal Initiator ACL Symlink outside of %s" " TPGT: %s\n", config_item_name(wwn_ci), config_item_name(tpg_ci)); return -EINVAL; } /* * If this struct se_node_acl was dynamically generated with * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags, * which be will write protected (READ-ONLY) when * tpg_1/attrib/demo_mode_write_protect=1 */ spin_lock_irq(&lacl->se_lun_nacl->device_list_lock); deve = lacl->se_lun_nacl->device_list[lacl->mapped_lun]; if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) lun_access = deve->lun_flags; else lun_access = (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect( se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY : TRANSPORT_LUNFLAGS_READ_WRITE; spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock); /* * Determine the actual mapped LUN value user wants.. * * This value is what the SCSI Initiator actually sees the * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports. */ ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun->unpacked_lun, lun_access); return (ret < 0) ? -EINVAL : 0; } static int target_fabric_mappedlun_unlink( struct config_item *lun_acl_ci, struct config_item *lun_ci) { struct se_lun *lun; struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci), struct se_lun_acl, se_lun_group); struct se_node_acl *nacl = lacl->se_lun_nacl; struct se_dev_entry *deve = nacl->device_list[lacl->mapped_lun]; struct se_portal_group *se_tpg; /* * Determine if the underlying MappedLUN has already been released.. */ if (!deve->se_lun) return 0; lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); se_tpg = lun->lun_sep->sep_tpg; core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl); return 0; } CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl); #define TCM_MAPPEDLUN_ATTR(_name, _mode) \ static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \ __CONFIGFS_EATTR(_name, _mode, \ target_fabric_mappedlun_show_##_name, \ target_fabric_mappedlun_store_##_name); static ssize_t target_fabric_mappedlun_show_write_protect( struct se_lun_acl *lacl, char *page) { struct se_node_acl *se_nacl = lacl->se_lun_nacl; struct se_dev_entry *deve; ssize_t len; spin_lock_irq(&se_nacl->device_list_lock); deve = se_nacl->device_list[lacl->mapped_lun]; len = sprintf(page, "%d\n", (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ? 1 : 0); spin_unlock_irq(&se_nacl->device_list_lock); return len; } static ssize_t target_fabric_mappedlun_store_write_protect( struct se_lun_acl *lacl, const char *page, size_t count) { struct se_node_acl *se_nacl = lacl->se_lun_nacl; struct se_portal_group *se_tpg = se_nacl->se_tpg; unsigned long op; if (strict_strtoul(page, 0, &op)) return -EINVAL; if ((op != 1) && (op != 0)) return -EINVAL; core_update_device_list_access(lacl->mapped_lun, (op) ? TRANSPORT_LUNFLAGS_READ_ONLY : TRANSPORT_LUNFLAGS_READ_WRITE, lacl->se_lun_nacl); pr_debug("%s_ConfigFS: Changed Initiator ACL: %s" " Mapped LUN: %u Write Protect bit to %s\n", se_tpg->se_tpg_tfo->get_fabric_name(), lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF"); return count; } TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR); CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group); static void target_fabric_mappedlun_release(struct config_item *item) { struct se_lun_acl *lacl = container_of(to_config_group(item), struct se_lun_acl, se_lun_group); struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg; core_dev_free_initiator_node_lun_acl(se_tpg, lacl); } static struct configfs_attribute *target_fabric_mappedlun_attrs[] = { &target_fabric_mappedlun_write_protect.attr, NULL, }; static struct configfs_item_operations target_fabric_mappedlun_item_ops = { .release = target_fabric_mappedlun_release, .show_attribute = target_fabric_mappedlun_attr_show, .store_attribute = target_fabric_mappedlun_attr_store, .allow_link = target_fabric_mappedlun_link, .drop_link = target_fabric_mappedlun_unlink, }; TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL, target_fabric_mappedlun_attrs); /* End of tfc_tpg_mappedlun_cit */ /* Start of tfc_tpg_mappedlun_port_cit */ static struct config_group *target_core_mappedlun_stat_mkdir( struct config_group *group, const char *name) { return ERR_PTR(-ENOSYS); } static void target_core_mappedlun_stat_rmdir( struct config_group *group, struct config_item *item) { return; } static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = { .make_group = target_core_mappedlun_stat_mkdir, .drop_item = target_core_mappedlun_stat_rmdir, }; TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops, NULL); /* End of tfc_tpg_mappedlun_port_cit */ /* Start of tfc_tpg_nacl_attrib_cit */ CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group); static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = { .show_attribute = target_fabric_nacl_attrib_attr_show, .store_attribute = target_fabric_nacl_attrib_attr_store, }; TF_CIT_SETUP(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, NULL); /* End of tfc_tpg_nacl_attrib_cit */ /* Start of tfc_tpg_nacl_auth_cit */ CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group); static struct configfs_item_operations target_fabric_nacl_auth_item_ops = { .show_attribute = target_fabric_nacl_auth_attr_show, .store_attribute = target_fabric_nacl_auth_attr_store, }; TF_CIT_SETUP(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, NULL); /* End of tfc_tpg_nacl_auth_cit */ /* Start of tfc_tpg_nacl_param_cit */ CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group); static struct configfs_item_operations target_fabric_nacl_param_item_ops = { .show_attribute = target_fabric_nacl_param_attr_show, .store_attribute = target_fabric_nacl_param_attr_store, }; TF_CIT_SETUP(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, NULL); /* End of tfc_tpg_nacl_param_cit */ /* Start of tfc_tpg_nacl_base_cit */ CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group); static struct config_group *target_fabric_make_mappedlun( struct config_group *group, const char *name) { struct se_node_acl *se_nacl = container_of(group, struct se_node_acl, acl_group); struct se_portal_group *se_tpg = se_nacl->se_tpg; struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; struct se_lun_acl *lacl; struct config_item *acl_ci; struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL; char *buf; unsigned long mapped_lun; int ret = 0; acl_ci = &group->cg_item; if (!acl_ci) { pr_err("Unable to locatel acl_ci\n"); return NULL; } buf = kzalloc(strlen(name) + 1, GFP_KERNEL); if (!buf) { pr_err("Unable to allocate memory for name buf\n"); return ERR_PTR(-ENOMEM); } snprintf(buf, strlen(name) + 1, "%s", name); /* * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID. */ if (strstr(buf, "lun_") != buf) { pr_err("Unable to locate \"lun_\" from buf: %s" " name: %s\n", buf, name); ret = -EINVAL; goto out; } /* * Determine the Mapped LUN value. This is what the SCSI Initiator * Port will actually see. */ if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) { ret = -EINVAL; goto out; } lacl = core_dev_init_initiator_node_lun_acl(se_tpg, mapped_lun, config_item_name(acl_ci), &ret); if (!lacl) { ret = -EINVAL; goto out; } lacl_cg = &lacl->se_lun_group; lacl_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, GFP_KERNEL); if (!lacl_cg->default_groups) { pr_err("Unable to allocate lacl_cg->default_groups\n"); ret = -ENOMEM; goto out; } config_group_init_type_name(&lacl->se_lun_group, name, &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit); config_group_init_type_name(&lacl->ml_stat_grps.stat_group, "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit); lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group; lacl_cg->default_groups[1] = NULL; ml_stat_grp = &lacl->ml_stat_grps.stat_group; ml_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3, GFP_KERNEL); if (!ml_stat_grp->default_groups) { pr_err("Unable to allocate ml_stat_grp->default_groups\n"); ret = -ENOMEM; goto out; } target_stat_setup_mappedlun_default_groups(lacl); kfree(buf); return &lacl->se_lun_group; out: if (lacl_cg) kfree(lacl_cg->default_groups); kfree(buf); return ERR_PTR(ret); } static void target_fabric_drop_mappedlun( struct config_group *group, struct config_item *item) { struct se_lun_acl *lacl = container_of(to_config_group(item), struct se_lun_acl, se_lun_group); struct config_item *df_item; struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL; int i; ml_stat_grp = &lacl->ml_stat_grps.stat_group; for (i = 0; ml_stat_grp->default_groups[i]; i++) { df_item = &ml_stat_grp->default_groups[i]->cg_item; ml_stat_grp->default_groups[i] = NULL; config_item_put(df_item); } kfree(ml_stat_grp->default_groups); lacl_cg = &lacl->se_lun_group; for (i = 0; lacl_cg->default_groups[i]; i++) { df_item = &lacl_cg->default_groups[i]->cg_item; lacl_cg->default_groups[i] = NULL; config_item_put(df_item); } kfree(lacl_cg->default_groups); config_item_put(item); } static void target_fabric_nacl_base_release(struct config_item *item) { struct se_node_acl *se_nacl = container_of(to_config_group(item), struct se_node_acl, acl_group); struct se_portal_group *se_tpg = se_nacl->se_tpg; struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; tf->tf_ops.fabric_drop_nodeacl(se_nacl); } static struct configfs_item_operations target_fabric_nacl_base_item_ops = { .release = target_fabric_nacl_base_release, .show_attribute = target_fabric_nacl_base_attr_show, .store_attribute = target_fabric_nacl_base_attr_store, }; static struct configfs_group_operations target_fabric_nacl_base_group_ops = { .make_group = target_fabric_make_mappedlun, .drop_item = target_fabric_drop_mappedlun, }; TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops, &target_fabric_nacl_base_group_ops, NULL); /* End of tfc_tpg_nacl_base_cit */ /* Start of tfc_node_fabric_stats_cit */ /* * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group * to allow fabrics access to ->acl_fabric_stat_group->default_groups[] */ TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL); /* End of tfc_wwn_fabric_stats_cit */ /* Start of tfc_tpg_nacl_cit */ static struct config_group *target_fabric_make_nodeacl( struct config_group *group, const char *name) { struct se_portal_group *se_tpg = container_of(group, struct se_portal_group, tpg_acl_group); struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; struct se_node_acl *se_nacl; struct config_group *nacl_cg; if (!tf->tf_ops.fabric_make_nodeacl) { pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n"); return ERR_PTR(-ENOSYS); } se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name); if (IS_ERR(se_nacl)) return ERR_CAST(se_nacl); nacl_cg = &se_nacl->acl_group; nacl_cg->default_groups = se_nacl->acl_default_groups; nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group; nacl_cg->default_groups[1] = &se_nacl->acl_auth_group; nacl_cg->default_groups[2] = &se_nacl->acl_param_group; nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group; nacl_cg->default_groups[4] = NULL; config_group_init_type_name(&se_nacl->acl_group, name, &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit); config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib", &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit); config_group_init_type_name(&se_nacl->acl_auth_group, "auth", &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit); config_group_init_type_name(&se_nacl->acl_param_group, "param", &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit); config_group_init_type_name(&se_nacl->acl_fabric_stat_group, "fabric_statistics", &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit); return &se_nacl->acl_group; } static void target_fabric_drop_nodeacl( struct config_group *group, struct config_item *item) { struct se_node_acl *se_nacl = container_of(to_config_group(item), struct se_node_acl, acl_group); struct config_item *df_item; struct config_group *nacl_cg; int i; nacl_cg = &se_nacl->acl_group; for (i = 0; nacl_cg->default_groups[i]; i++) { df_item = &nacl_cg->default_groups[i]->cg_item; nacl_cg->default_groups[i] = NULL; config_item_put(df_item); } /* * struct se_node_acl free is done in target_fabric_nacl_base_release() */ config_item_put(item); } static struct configfs_group_operations target_fabric_nacl_group_ops = { .make_group = target_fabric_make_nodeacl, .drop_item = target_fabric_drop_nodeacl, }; TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL); /* End of tfc_tpg_nacl_cit */ /* Start of tfc_tpg_np_base_cit */ CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group); static void target_fabric_np_base_release(struct config_item *item) { struct se_tpg_np *se_tpg_np = container_of(to_config_group(item), struct se_tpg_np, tpg_np_group); struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent; struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; tf->tf_ops.fabric_drop_np(se_tpg_np); } static struct configfs_item_operations target_fabric_np_base_item_ops = { .release = target_fabric_np_base_release, .show_attribute = target_fabric_np_base_attr_show, .store_attribute = target_fabric_np_base_attr_store, }; TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL); /* End of tfc_tpg_np_base_cit */ /* Start of tfc_tpg_np_cit */ static struct config_group *target_fabric_make_np( struct config_group *group, const char *name) { struct se_portal_group *se_tpg = container_of(group, struct se_portal_group, tpg_np_group); struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; struct se_tpg_np *se_tpg_np; if (!tf->tf_ops.fabric_make_np) { pr_err("tf->tf_ops.fabric_make_np is NULL\n"); return ERR_PTR(-ENOSYS); } se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name); if (!se_tpg_np || IS_ERR(se_tpg_np)) return ERR_PTR(-EINVAL); se_tpg_np->tpg_np_parent = se_tpg; config_group_init_type_name(&se_tpg_np->tpg_np_group, name, &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit); return &se_tpg_np->tpg_np_group; } static void target_fabric_drop_np( struct config_group *group, struct config_item *item) { /* * struct se_tpg_np is released via target_fabric_np_base_release() */ config_item_put(item); } static struct configfs_group_operations target_fabric_np_group_ops = { .make_group = &target_fabric_make_np, .drop_item = &target_fabric_drop_np, }; TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL); /* End of tfc_tpg_np_cit */ /* Start of tfc_tpg_port_cit */ CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun); #define TCM_PORT_ATTR(_name, _mode) \ static struct target_fabric_port_attribute target_fabric_port_##_name = \ __CONFIGFS_EATTR(_name, _mode, \ target_fabric_port_show_attr_##_name, \ target_fabric_port_store_attr_##_name); #define TCM_PORT_ATTOR_RO(_name) \ __CONFIGFS_EATTR_RO(_name, \ target_fabric_port_show_attr_##_name); /* * alua_tg_pt_gp */ static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp( struct se_lun *lun, char *page) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_show_tg_pt_gp_info(lun->lun_sep, page); } static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp( struct se_lun *lun, const char *page, size_t count) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count); } TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR); /* * alua_tg_pt_offline */ static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline( struct se_lun *lun, char *page) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_show_offline_bit(lun, page); } static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline( struct se_lun *lun, const char *page, size_t count) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_store_offline_bit(lun, page, count); } TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR); /* * alua_tg_pt_status */ static ssize_t target_fabric_port_show_attr_alua_tg_pt_status( struct se_lun *lun, char *page) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_show_secondary_status(lun, page); } static ssize_t target_fabric_port_store_attr_alua_tg_pt_status( struct se_lun *lun, const char *page, size_t count) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_store_secondary_status(lun, page, count); } TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR); /* * alua_tg_pt_write_md */ static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md( struct se_lun *lun, char *page) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_show_secondary_write_metadata(lun, page); } static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md( struct se_lun *lun, const char *page, size_t count) { if (!lun || !lun->lun_sep) return -ENODEV; return core_alua_store_secondary_write_metadata(lun, page, count); } TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR); static struct configfs_attribute *target_fabric_port_attrs[] = { &target_fabric_port_alua_tg_pt_gp.attr, &target_fabric_port_alua_tg_pt_offline.attr, &target_fabric_port_alua_tg_pt_status.attr, &target_fabric_port_alua_tg_pt_write_md.attr, NULL, }; CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group); static int target_fabric_port_link( struct config_item *lun_ci, struct config_item *se_dev_ci) { struct config_item *tpg_ci; struct se_lun *lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); struct se_lun *lun_p; struct se_portal_group *se_tpg; struct se_device *dev = container_of(to_config_group(se_dev_ci), struct se_device, dev_group); struct target_fabric_configfs *tf; int ret; tpg_ci = &lun_ci->ci_parent->ci_group->cg_item; se_tpg = container_of(to_config_group(tpg_ci), struct se_portal_group, tpg_group); tf = se_tpg->se_tpg_wwn->wwn_tf; if (lun->lun_se_dev != NULL) { pr_err("Port Symlink already exists\n"); return -EEXIST; } lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun); if (IS_ERR(lun_p)) { pr_err("core_dev_add_lun() failed\n"); ret = PTR_ERR(lun_p); goto out; } if (tf->tf_ops.fabric_post_link) { /* * Call the optional fabric_post_link() to allow a * fabric module to setup any additional state once * core_dev_add_lun() has been called.. */ tf->tf_ops.fabric_post_link(se_tpg, lun); } return 0; out: return ret; } static int target_fabric_port_unlink( struct config_item *lun_ci, struct config_item *se_dev_ci) { struct se_lun *lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg; struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; if (tf->tf_ops.fabric_pre_unlink) { /* * Call the optional fabric_pre_unlink() to allow a * fabric module to release any additional stat before * core_dev_del_lun() is called. */ tf->tf_ops.fabric_pre_unlink(se_tpg, lun); } core_dev_del_lun(se_tpg, lun->unpacked_lun); return 0; } static struct configfs_item_operations target_fabric_port_item_ops = { .show_attribute = target_fabric_port_attr_show, .store_attribute = target_fabric_port_attr_store, .allow_link = target_fabric_port_link, .drop_link = target_fabric_port_unlink, }; TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs); /* End of tfc_tpg_port_cit */ /* Start of tfc_tpg_port_stat_cit */ static struct config_group *target_core_port_stat_mkdir( struct config_group *group, const char *name) { return ERR_PTR(-ENOSYS); } static void target_core_port_stat_rmdir( struct config_group *group, struct config_item *item) { return; } static struct configfs_group_operations target_fabric_port_stat_group_ops = { .make_group = target_core_port_stat_mkdir, .drop_item = target_core_port_stat_rmdir, }; TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL); /* End of tfc_tpg_port_stat_cit */ /* Start of tfc_tpg_lun_cit */ static struct config_group *target_fabric_make_lun( struct config_group *group, const char *name) { struct se_lun *lun; struct se_portal_group *se_tpg = container_of(group, struct se_portal_group, tpg_lun_group); struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; struct config_group *lun_cg = NULL, *port_stat_grp = NULL; unsigned long unpacked_lun; int errno; if (strstr(name, "lun_") != name) { pr_err("Unable to locate \'_\" in" " \"lun_$LUN_NUMBER\"\n"); return ERR_PTR(-EINVAL); } if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX) return ERR_PTR(-EINVAL); lun = core_get_lun_from_tpg(se_tpg, unpacked_lun); if (!lun) return ERR_PTR(-EINVAL); lun_cg = &lun->lun_group; lun_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, GFP_KERNEL); if (!lun_cg->default_groups) { pr_err("Unable to allocate lun_cg->default_groups\n"); return ERR_PTR(-ENOMEM); } config_group_init_type_name(&lun->lun_group, name, &TF_CIT_TMPL(tf)->tfc_tpg_port_cit); config_group_init_type_name(&lun->port_stat_grps.stat_group, "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit); lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group; lun_cg->default_groups[1] = NULL; port_stat_grp = &lun->port_stat_grps.stat_group; port_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3, GFP_KERNEL); if (!port_stat_grp->default_groups) { pr_err("Unable to allocate port_stat_grp->default_groups\n"); errno = -ENOMEM; goto out; } target_stat_setup_port_default_groups(lun); return &lun->lun_group; out: if (lun_cg) kfree(lun_cg->default_groups); return ERR_PTR(errno); } static void target_fabric_drop_lun( struct config_group *group, struct config_item *item) { struct se_lun *lun = container_of(to_config_group(item), struct se_lun, lun_group); struct config_item *df_item; struct config_group *lun_cg, *port_stat_grp; int i; port_stat_grp = &lun->port_stat_grps.stat_group; for (i = 0; port_stat_grp->default_groups[i]; i++) { df_item = &port_stat_grp->default_groups[i]->cg_item; port_stat_grp->default_groups[i] = NULL; config_item_put(df_item); } kfree(port_stat_grp->default_groups); lun_cg = &lun->lun_group; for (i = 0; lun_cg->default_groups[i]; i++) { df_item = &lun_cg->default_groups[i]->cg_item; lun_cg->default_groups[i] = NULL; config_item_put(df_item); } kfree(lun_cg->default_groups); config_item_put(item); } static struct configfs_group_operations target_fabric_lun_group_ops = { .make_group = &target_fabric_make_lun, .drop_item = &target_fabric_drop_lun, }; TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL); /* End of tfc_tpg_lun_cit */ /* Start of tfc_tpg_attrib_cit */ CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group); static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = { .show_attribute = target_fabric_tpg_attrib_attr_show, .store_attribute = target_fabric_tpg_attrib_attr_store, }; TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL); /* End of tfc_tpg_attrib_cit */ /* Start of tfc_tpg_param_cit */ CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group); static struct configfs_item_operations target_fabric_tpg_param_item_ops = { .show_attribute = target_fabric_tpg_param_attr_show, .store_attribute = target_fabric_tpg_param_attr_store, }; TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL); /* End of tfc_tpg_param_cit */ /* Start of tfc_tpg_base_cit */ /* * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO() */ CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group); static void target_fabric_tpg_release(struct config_item *item) { struct se_portal_group *se_tpg = container_of(to_config_group(item), struct se_portal_group, tpg_group); struct se_wwn *wwn = se_tpg->se_tpg_wwn; struct target_fabric_configfs *tf = wwn->wwn_tf; tf->tf_ops.fabric_drop_tpg(se_tpg); } static struct configfs_item_operations target_fabric_tpg_base_item_ops = { .release = target_fabric_tpg_release, .show_attribute = target_fabric_tpg_attr_show, .store_attribute = target_fabric_tpg_attr_store, }; TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL); /* End of tfc_tpg_base_cit */ /* Start of tfc_tpg_cit */ static struct config_group *target_fabric_make_tpg( struct config_group *group, const char *name) { struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group); struct target_fabric_configfs *tf = wwn->wwn_tf; struct se_portal_group *se_tpg; if (!tf->tf_ops.fabric_make_tpg) { pr_err("tf->tf_ops.fabric_make_tpg is NULL\n"); return ERR_PTR(-ENOSYS); } se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name); if (!se_tpg || IS_ERR(se_tpg)) return ERR_PTR(-EINVAL); /* * Setup default groups from pre-allocated se_tpg->tpg_default_groups */ se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups; se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group; se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group; se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group; se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group; se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group; se_tpg->tpg_group.default_groups[5] = NULL; config_group_init_type_name(&se_tpg->tpg_group, name, &TF_CIT_TMPL(tf)->tfc_tpg_base_cit); config_group_init_type_name(&se_tpg->tpg_lun_group, "lun", &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit); config_group_init_type_name(&se_tpg->tpg_np_group, "np", &TF_CIT_TMPL(tf)->tfc_tpg_np_cit); config_group_init_type_name(&se_tpg->tpg_acl_group, "acls", &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit); config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib", &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit); config_group_init_type_name(&se_tpg->tpg_param_group, "param", &TF_CIT_TMPL(tf)->tfc_tpg_param_cit); return &se_tpg->tpg_group; } static void target_fabric_drop_tpg( struct config_group *group, struct config_item *item) { struct se_portal_group *se_tpg = container_of(to_config_group(item), struct se_portal_group, tpg_group); struct config_group *tpg_cg = &se_tpg->tpg_group; struct config_item *df_item; int i; /* * Release default groups, but do not release tpg_cg->default_groups * memory as it is statically allocated at se_tpg->tpg_default_groups. */ for (i = 0; tpg_cg->default_groups[i]; i++) { df_item = &tpg_cg->default_groups[i]->cg_item; tpg_cg->default_groups[i] = NULL; config_item_put(df_item); } config_item_put(item); } static void target_fabric_release_wwn(struct config_item *item) { struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn, wwn_group); struct target_fabric_configfs *tf = wwn->wwn_tf; tf->tf_ops.fabric_drop_wwn(wwn); } static struct configfs_item_operations target_fabric_tpg_item_ops = { .release = target_fabric_release_wwn, }; static struct configfs_group_operations target_fabric_tpg_group_ops = { .make_group = target_fabric_make_tpg, .drop_item = target_fabric_drop_tpg, }; TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops, NULL); /* End of tfc_tpg_cit */ /* Start of tfc_wwn_fabric_stats_cit */ /* * This is used as a placeholder for struct se_wwn->fabric_stat_group * to allow fabrics access to ->fabric_stat_group->default_groups[] */ TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL); /* End of tfc_wwn_fabric_stats_cit */ /* Start of tfc_wwn_cit */ static struct config_group *target_fabric_make_wwn( struct config_group *group, const char *name) { struct target_fabric_configfs *tf = container_of(group, struct target_fabric_configfs, tf_group); struct se_wwn *wwn; if (!tf->tf_ops.fabric_make_wwn) { pr_err("tf->tf_ops.fabric_make_wwn is NULL\n"); return ERR_PTR(-ENOSYS); } wwn = tf->tf_ops.fabric_make_wwn(tf, group, name); if (!wwn || IS_ERR(wwn)) return ERR_PTR(-EINVAL); wwn->wwn_tf = tf; /* * Setup default groups from pre-allocated wwn->wwn_default_groups */ wwn->wwn_group.default_groups = wwn->wwn_default_groups; wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group; wwn->wwn_group.default_groups[1] = NULL; config_group_init_type_name(&wwn->wwn_group, name, &TF_CIT_TMPL(tf)->tfc_tpg_cit); config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics", &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit); return &wwn->wwn_group; } static void target_fabric_drop_wwn( struct config_group *group, struct config_item *item) { struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn, wwn_group); struct config_item *df_item; struct config_group *cg = &wwn->wwn_group; int i; for (i = 0; cg->default_groups[i]; i++) { df_item = &cg->default_groups[i]->cg_item; cg->default_groups[i] = NULL; config_item_put(df_item); } config_item_put(item); } static struct configfs_group_operations target_fabric_wwn_group_ops = { .make_group = target_fabric_make_wwn, .drop_item = target_fabric_drop_wwn, }; /* * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO() */ CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group); static struct configfs_item_operations target_fabric_wwn_item_ops = { .show_attribute = target_fabric_wwn_attr_show, .store_attribute = target_fabric_wwn_attr_store, }; TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL); /* End of tfc_wwn_cit */ /* Start of tfc_discovery_cit */ CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs, tf_disc_group); static struct configfs_item_operations target_fabric_discovery_item_ops = { .show_attribute = target_fabric_discovery_attr_show, .store_attribute = target_fabric_discovery_attr_store, }; TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL); /* End of tfc_discovery_cit */ int target_fabric_setup_cits(struct target_fabric_configfs *tf) { target_fabric_setup_discovery_cit(tf); target_fabric_setup_wwn_cit(tf); target_fabric_setup_wwn_fabric_stats_cit(tf); target_fabric_setup_tpg_cit(tf); target_fabric_setup_tpg_base_cit(tf); target_fabric_setup_tpg_port_cit(tf); target_fabric_setup_tpg_port_stat_cit(tf); target_fabric_setup_tpg_lun_cit(tf); target_fabric_setup_tpg_np_cit(tf); target_fabric_setup_tpg_np_base_cit(tf); target_fabric_setup_tpg_attrib_cit(tf); target_fabric_setup_tpg_param_cit(tf); target_fabric_setup_tpg_nacl_cit(tf); target_fabric_setup_tpg_nacl_base_cit(tf); target_fabric_setup_tpg_nacl_attrib_cit(tf); target_fabric_setup_tpg_nacl_auth_cit(tf); target_fabric_setup_tpg_nacl_param_cit(tf); target_fabric_setup_tpg_nacl_stat_cit(tf); target_fabric_setup_tpg_mappedlun_cit(tf); target_fabric_setup_tpg_mappedlun_stat_cit(tf); return 0; }