From patchwork Wed Apr 29 09:44:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Bolshakov X-Patchwork-Id: 11516533 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E7A9915AB for ; Wed, 29 Apr 2020 09:45:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CFC6120775 for ; Wed, 29 Apr 2020 09:45:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yadro.com header.i=@yadro.com header.b="qH6tV5md" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726770AbgD2Jpi (ORCPT ); Wed, 29 Apr 2020 05:45:38 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:39868 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726677AbgD2Jpf (ORCPT ); Wed, 29 Apr 2020 05:45:35 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 514BE4C84C; Wed, 29 Apr 2020 09:45:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received; s=mta-01; t= 1588153528; x=1589967929; bh=k6n1khQmz3eZGpOG2KZIZIjTtD58tijZGl6 hdagMKW0=; b=qH6tV5mdvzmiv8sN99l+yBQdtm/oPyUusHsj8aiBe1rHnDRTkZ3 laqGTWWV4NUCLnZQTedZHYg9yPObIFsgJy3GWV2D00hcso8+AazyQxN7erVrqcAN ztjBHDCumkzyphh9IL6GS/PS1Wu95RJeF1hTfgz+K2TSCs1mUJo3wyJE= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id jEDqruWmktXA; Wed, 29 Apr 2020 12:45:28 +0300 (MSK) Received: from T-EXCH-02.corp.yadro.com (t-exch-02.corp.yadro.com [172.17.10.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id DE4EA4C84D; Wed, 29 Apr 2020 12:45:27 +0300 (MSK) Received: from localhost (172.17.204.212) by T-EXCH-02.corp.yadro.com (172.17.10.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Wed, 29 Apr 2020 12:45:29 +0300 From: Roman Bolshakov To: , Mike Christie , Bart Van Assche , David Disseldorp CC: , , Roman Bolshakov Subject: [RFC PATCH 07/11] scsi: target/core: Add common port attributes Date: Wed, 29 Apr 2020 12:44:40 +0300 Message-ID: <20200429094443.43937-8-r.bolshakov@yadro.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200429094443.43937-1-r.bolshakov@yadro.com> References: <20200429094443.43937-1-r.bolshakov@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.204.212] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-02.corp.yadro.com (172.17.10.102) Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org All SCSI target port attributes (tpgN/attribs/attrname) are defined and implemented in fabric modules in existing implementation. The change introduces a way to have common tpg attribs in configfs for all fabrics without code duplication. Signed-off-by: Roman Bolshakov --- drivers/target/target_core_configfs.c | 9 ++++- drivers/target/target_core_fabric_configfs.c | 41 +++++++++++++++++++- drivers/target/target_core_internal.h | 1 + drivers/target/target_core_tpg.c | 4 ++ 4 files changed, 52 insertions(+), 3 deletions(-) diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 42390ce9d4db..3311d29ecad8 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -464,13 +464,19 @@ int target_register_template(const struct target_core_fabric_ops *fo) INIT_LIST_HEAD(&tf->tf_list); atomic_set(&tf->tf_access_cnt, 0); tf->tf_ops = fo; - target_fabric_setup_cits(tf); + ret = target_fabric_setup_cits(tf); + if (ret) + goto out; mutex_lock(&g_tf_lock); list_add_tail(&tf->tf_list, &g_tf_list); mutex_unlock(&g_tf_lock); return 0; + +out: + kfree(tf); + return ret; } EXPORT_SYMBOL(target_register_template); @@ -490,6 +496,7 @@ void target_unregister_template(const struct target_core_fabric_ops *fo) * fabric driver unload of TFO->module to proceed. */ rcu_barrier(); + kfree(t->tf_tpg_attrib_cit.ct_attrs); kfree(t); return; } diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c index ee85602213f7..883ec9cac835 100644 --- a/drivers/target/target_core_fabric_configfs.c +++ b/drivers/target/target_core_fabric_configfs.c @@ -795,7 +795,38 @@ TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL); /* End of tfc_tpg_lun_cit */ -TF_CIT_SETUP_DRV(tpg_attrib, NULL, NULL); +static int +target_fabric_setup_tpg_attrib_cit(struct target_fabric_configfs *tf) +{ + int i, k, len = 0; + struct config_item_type *cit = &tf->tf_tpg_attrib_cit; + struct configfs_attribute **attrs; + + for (i = 0; core_tpg_attrib_attrs[i]; i++) + len += sizeof(struct configfs_attribute *); + if (tf->tf_ops->tfc_tpg_attrib_attrs) + for (i = 0; tf->tf_ops->tfc_tpg_attrib_attrs[i]; i++) + len += sizeof(struct configfs_attribute *); + len += sizeof(struct configfs_attribute *); + + attrs = kzalloc(len, GFP_KERNEL); + if (!attrs) + return -ENOMEM; + + for (i = 0; core_tpg_attrib_attrs[i]; i++) + attrs[i] = core_tpg_attrib_attrs[i]; + if (tf->tf_ops->tfc_tpg_attrib_attrs) + for (k = 0; tf->tf_ops->tfc_tpg_attrib_attrs[k]; k++, i++) + attrs[i] = tf->tf_ops->tfc_tpg_attrib_attrs[k]; + attrs[i] = NULL; + + cit->ct_attrs = attrs; + cit->ct_owner = tf->tf_ops->module; + pr_debug("Setup generic tpg_attrib\n"); + + return 0; +} + TF_CIT_SETUP_DRV(tpg_auth, NULL, NULL); TF_CIT_SETUP_DRV(tpg_param, NULL, NULL); @@ -971,6 +1002,8 @@ TF_CIT_SETUP_DRV(discovery, NULL, NULL); int target_fabric_setup_cits(struct target_fabric_configfs *tf) { + int ret; + target_fabric_setup_discovery_cit(tf); target_fabric_setup_wwn_cit(tf); target_fabric_setup_wwn_fabric_stats_cit(tf); @@ -981,7 +1014,11 @@ int target_fabric_setup_cits(struct target_fabric_configfs *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); + + ret = target_fabric_setup_tpg_attrib_cit(tf); + if (ret) + return ret; + target_fabric_setup_tpg_auth_cit(tf); target_fabric_setup_tpg_param_cit(tf); target_fabric_setup_tpg_nacl_cit(tf); diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index aed38c9705f8..e1aabb79467a 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -116,6 +116,7 @@ int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *, /* target_core_tpg.c */ extern struct se_device *g_lun0_dev; +extern struct configfs_attribute *core_tpg_attrib_attrs[]; struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg, const char *); diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 32bc28afe93c..67474690720d 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -719,3 +719,7 @@ void core_tpg_remove_lun( percpu_ref_exit(&lun->lun_ref); } + +struct configfs_attribute *core_tpg_attrib_attrs[] = { + NULL, +};