From patchwork Tue Feb 21 16:06:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Bogdanov X-Patchwork-Id: 655635 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13604C64EC7 for ; Tue, 21 Feb 2023 16:06:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234135AbjBUQGm (ORCPT ); Tue, 21 Feb 2023 11:06:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233830AbjBUQGj (ORCPT ); Tue, 21 Feb 2023 11:06:39 -0500 Received: from mta-01.yadro.com (mta-02.yadro.com [89.207.88.252]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 365AE2B2B0; Tue, 21 Feb 2023 08:06:38 -0800 (PST) Received: from mta-01.yadro.com (localhost.localdomain [127.0.0.1]) by mta-01.yadro.com (Proxmox) with ESMTP id B0450342032; Tue, 21 Feb 2023 19:06:36 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yadro.com; h=cc :cc:content-transfer-encoding:content-type:content-type:date :from:from:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=mta-01; bh=/2yAq4zg7mOz/ZGeYf uyD69YVsjfo5HEVhRuX3z1NU0=; b=vcykzYqCRjWPHkFAoWqU6oRiZlz0WTxi5G ztSp9/WM4fFaXDttgArMDxiwXMEeM90avfDcct39bIO+KwOrtxRZBfkia5Juxc1g BMmCl+5PsZSI5EFdDZmXQBL9mD7/nsqHv8zRxfH4n2I2eY3lhYBEP2C3HAdFqonB AcWG8QOQ0= Received: from T-EXCH-08.corp.yadro.com (unknown [172.17.10.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Proxmox) with ESMTPS id A6F19342024; Tue, 21 Feb 2023 19:06:36 +0300 (MSK) Received: from NB-591.corp.yadro.com (10.178.114.42) by T-EXCH-08.corp.yadro.com (172.17.11.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1118.9; Tue, 21 Feb 2023 19:06:35 +0300 From: Dmitry Bogdanov To: Martin Petersen , CC: Christoph Hellwig , Mike Christie , , , Roman Bolshakov , Christoph Hellwig , Dmitry Bogdanov Subject: [PATCH v4 3/4] scsi: target: core: Drop device-based RTPI Date: Tue, 21 Feb 2023 19:06:21 +0300 Message-ID: <20230221160622.7283-4-d.bogdanov@yadro.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230221160622.7283-1-d.bogdanov@yadro.com> References: <20230221160622.7283-1-d.bogdanov@yadro.com> MIME-Version: 1.0 X-Originating-IP: [10.178.114.42] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-08.corp.yadro.com (172.17.11.58) Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Roman Bolshakov The code is not needed since target port-based RTPI allocation replaced it. Reviewed-by: Christoph Hellwig Signed-off-by: Roman Bolshakov Signed-off-by: Dmitry Bogdanov --- drivers/target/target_core_device.c | 41 --------------------------- drivers/target/target_core_internal.h | 1 - drivers/target/target_core_tpg.c | 6 ---- include/target/target_core_base.h | 4 --- 4 files changed, 52 deletions(-) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 93f7f050fdf1..a3292eade6ea 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -479,47 +479,6 @@ void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) mutex_unlock(&tpg->acl_node_mutex); } -int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) -{ - struct se_lun *tmp; - - spin_lock(&dev->se_port_lock); - if (dev->export_count == 0x0000ffff) { - pr_warn("Reached dev->dev_port_count ==" - " 0x0000ffff\n"); - spin_unlock(&dev->se_port_lock); - return -ENOSPC; - } -again: - /* - * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device - * Here is the table from spc4r17 section 7.7.3.8. - * - * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field - * - * Code Description - * 0h Reserved - * 1h Relative port 1, historically known as port A - * 2h Relative port 2, historically known as port B - * 3h to FFFFh Relative port 3 through 65 535 - */ - lun->lun_rtpi = dev->dev_rpti_counter++; - if (!lun->lun_rtpi) - goto again; - - list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { - /* - * Make sure RELATIVE TARGET PORT IDENTIFIER is unique - * for 16-bit wrap.. - */ - if (lun->lun_rtpi == tmp->lun_rtpi) - goto again; - } - spin_unlock(&dev->se_port_lock); - - return 0; -} - static void se_release_vpd_for_dev(struct se_device *dev) { struct t10_vpd *vpd, *vpd_tmp; diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 82fd5768a662..9c3bca552bb9 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -59,7 +59,6 @@ struct target_fabric_configfs { extern struct t10_alua_lu_gp *default_lu_gp; /* target_core_device.c */ -int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev); struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16); void target_pr_kref_release(struct kref *); void core_free_device_list_for_node(struct se_node_acl *, diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 0de3385b94c5..b1d9383386ec 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -632,10 +632,6 @@ int core_tpg_add_lun( if (ret < 0) goto out; - ret = core_alloc_rtpi(lun, dev); - if (ret) - goto out_kill_ref; - if (!(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA) && !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) target_attach_tg_pt_gp(lun, dev->t10_alua.default_tg_pt_gp); @@ -659,8 +655,6 @@ int core_tpg_add_lun( return 0; -out_kill_ref: - percpu_ref_exit(&lun->lun_ref); out: return ret; } diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 814edf746395..008e0e4500d1 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -735,8 +735,6 @@ struct se_lun { bool lun_access_ro; u32 lun_index; - /* RELATIVE TARGET PORT IDENTIFER */ - u16 lun_rtpi; atomic_t lun_acl_count; struct se_device __rcu *lun_se_dev; @@ -788,8 +786,6 @@ struct se_device_queue { }; struct se_device { - /* RELATIVE TARGET PORT IDENTIFER Counter */ - u16 dev_rpti_counter; /* Used for SAM Task Attribute ordering */ u32 dev_cur_ordered_id; u32 dev_flags;