From 9ac8928e6a3e1ed02e632e45aa766129fe6b1802 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 8 Apr 2015 20:01:35 +0200 Subject: target: simplify the target template registration API Instead of calling target_fabric_configfs_init() + target_fabric_configfs_register() / target_fabric_configfs_deregister() target_fabric_configfs_free() from every target driver, rewrite the API so that we have simple register/unregister functions that operate on a const operations vector. This patch also fixes a memory leak in several target drivers. Several target drivers namely called target_fabric_configfs_deregister() without calling target_fabric_configfs_free(). A large part of this patch is based on earlier changes from Bart Van Assche . (v2: Add a new TF_CIT_SETUP_DRV macro so that the core configfs code can declare attributes as either core only or for drivers) Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/scsi/qla2xxx/qla_target.c | 2 +- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 118 ++++++++----------------------------- 2 files changed, 27 insertions(+), 93 deletions(-) (limited to 'drivers/scsi/qla2xxx') diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 57418258c101..fe8a8d157e22 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -3065,7 +3065,7 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, { struct qla_hw_data *ha = vha->hw; struct se_cmd *se_cmd; - struct target_core_fabric_ops *tfo; + const struct target_core_fabric_ops *tfo; struct qla_tgt_cmd *cmd; if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 843b53b0e9f2..acf54cdbca2c 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -53,9 +53,8 @@ static struct workqueue_struct *tcm_qla2xxx_free_wq; static struct workqueue_struct *tcm_qla2xxx_cmd_wq; -/* Local pointer to allocated TCM configfs fabric module */ -static struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; -static struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; +static const struct target_core_fabric_ops tcm_qla2xxx_ops; +static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops; /* * Parse WWN. @@ -1177,7 +1176,7 @@ static struct se_portal_group *tcm_qla2xxx_make_tpg( tpg->tpg_attrib.cache_dynamic_acls = 1; tpg->tpg_attrib.demo_mode_login_only = 1; - ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, + ret = core_tpg_register(&tcm_qla2xxx_ops, wwn, &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); if (ret < 0) { kfree(tpg); @@ -1297,7 +1296,7 @@ static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( tpg->tpg_attrib.cache_dynamic_acls = 1; tpg->tpg_attrib.demo_mode_login_only = 1; - ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, + ret = core_tpg_register(&tcm_qla2xxx_npiv_ops, wwn, &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); if (ret < 0) { kfree(tpg); @@ -1987,7 +1986,9 @@ static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { NULL, }; -static struct target_core_fabric_ops tcm_qla2xxx_ops = { +static const struct target_core_fabric_ops tcm_qla2xxx_ops = { + .module = THIS_MODULE, + .name = "qla2xxx", .get_fabric_name = tcm_qla2xxx_get_fabric_name, .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, @@ -2037,9 +2038,15 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = { .fabric_drop_np = NULL, .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, + + .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, + .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, + .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, }; -static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { +static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { + .module = THIS_MODULE, + .name = "qla2xxx_npiv", .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, @@ -2087,94 +2094,26 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { .fabric_drop_np = NULL, .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, + + .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, + .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, }; static int tcm_qla2xxx_register_configfs(void) { - struct target_fabric_configfs *fabric, *npiv_fabric; int ret; pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, utsname()->machine); - /* - * Register the top level struct config_item_type with TCM core - */ - fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); - if (IS_ERR(fabric)) { - pr_err("target_fabric_configfs_init() failed\n"); - return PTR_ERR(fabric); - } - /* - * Setup fabric->tf_ops from our local tcm_qla2xxx_ops - */ - fabric->tf_ops = tcm_qla2xxx_ops; - /* - * Setup default attribute lists for various fabric->tf_cit_tmpl - */ - fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; - fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; - fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = - tcm_qla2xxx_tpg_attrib_attrs; - fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; - fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; - fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; - fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; - fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; - fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; - /* - * Register the fabric for use within TCM - */ - ret = target_fabric_configfs_register(fabric); - if (ret < 0) { - pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); + + ret = target_register_template(&tcm_qla2xxx_ops); + if (ret) return ret; - } - /* - * Setup our local pointer to *fabric - */ - tcm_qla2xxx_fabric_configfs = fabric; - pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); - /* - * Register the top level struct config_item_type for NPIV with TCM core - */ - npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); - if (IS_ERR(npiv_fabric)) { - pr_err("target_fabric_configfs_init() failed\n"); - ret = PTR_ERR(npiv_fabric); + ret = target_register_template(&tcm_qla2xxx_npiv_ops); + if (ret) goto out_fabric; - } - /* - * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops - */ - npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; - /* - * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl - */ - npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; - npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = - tcm_qla2xxx_npiv_tpg_attrs; - npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; - npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; - npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; - npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; - npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; - npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; - npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; - /* - * Register the npiv_fabric for use within TCM - */ - ret = target_fabric_configfs_register(npiv_fabric); - if (ret < 0) { - pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); - goto out_fabric; - } - /* - * Setup our local pointer to *npiv_fabric - */ - tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; - pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", WQ_MEM_RECLAIM, 0); @@ -2194,9 +2133,9 @@ static int tcm_qla2xxx_register_configfs(void) out_free_wq: destroy_workqueue(tcm_qla2xxx_free_wq); out_fabric_npiv: - target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); + target_unregister_template(&tcm_qla2xxx_npiv_ops); out_fabric: - target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); + target_unregister_template(&tcm_qla2xxx_ops); return ret; } @@ -2205,13 +2144,8 @@ static void tcm_qla2xxx_deregister_configfs(void) destroy_workqueue(tcm_qla2xxx_cmd_wq); destroy_workqueue(tcm_qla2xxx_free_wq); - target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); - tcm_qla2xxx_fabric_configfs = NULL; - pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); - - target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); - tcm_qla2xxx_npiv_fabric_configfs = NULL; - pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); + target_unregister_template(&tcm_qla2xxx_ops); + target_unregister_template(&tcm_qla2xxx_npiv_ops); } static int __init tcm_qla2xxx_init(void) -- cgit v1.2.3