From patchwork Wed Jul 6 23:35:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thinh Nguyen X-Patchwork-Id: 12908846 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 2E187C433EF for ; Wed, 6 Jul 2022 23:35:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234530AbiGFXfx (ORCPT ); Wed, 6 Jul 2022 19:35:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234526AbiGFXfw (ORCPT ); Wed, 6 Jul 2022 19:35:52 -0400 Received: from smtprelay-out1.synopsys.com (smtprelay-out1.synopsys.com [149.117.73.133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 562E62C675; Wed, 6 Jul 2022 16:35:52 -0700 (PDT) Received: from mailhost.synopsys.com (sv1-mailhost1.synopsys.com [10.205.2.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mailhost.synopsys.com", Issuer "SNPSica2" (verified OK)) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 339E640787; Wed, 6 Jul 2022 23:35:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1657150552; bh=LZdfP1dedOAVuUz3XRTRsLB/VZpumsqI+DHamdN21kM=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=JD0mvMO5r5a/X/MAWKtRRK4ACD4+ih+RZhFC0YONHr9/eKjs2WfEJjqt2g2cW73Ba 7ZZ6oBA9etEigMZp5+BaLDeQbm2x9gvgX9bQuNb1ixK8QJ28frUH39dkuhmPCxqzTS OI8tdX9PHDHRpqtttj/YX3mppA89JfS2i3vjpT15jBDv3LhYH/nmN1iIxvPu/Bwld6 hubhx+kU2xx14mMwhnRfBG9QN+ed4sdgWKvlzuUFn6CVkTA88RloD+N9+Nj0EBnVjK R/j9Zp6l9A/RyxY5EiqAvacso0EamSnebSrXfZjcSKqA+FU3iXA42nbxpb5ixVyMn8 bFYkhC+a6KX+g== Received: from te-lab16-v2 (nanobot.internal.synopsys.com [10.204.48.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mailhost.synopsys.com (Postfix) with ESMTPSA id 112F4A0063; Wed, 6 Jul 2022 23:35:51 +0000 (UTC) Received: by te-lab16-v2 (sSMTP sendmail emulation); Wed, 06 Jul 2022 16:35:51 -0700 Date: Wed, 06 Jul 2022 16:35:51 -0700 Message-Id: In-Reply-To: References: X-SNPS-Relay: synopsys.com From: Thinh Nguyen Subject: [PATCH 14/36] target: Introduce target_submit_tmr_fail_response To: linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, "Martin K. Petersen" Cc: John Youn , Felipe Balbi , Greg KH , Thinh Nguyen , linux-usb@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Similar to transport_send_check_condition_and_sense(), some error condition and status can only be checked by the user of the target core (such as TMR_OVERLAPPED_TAG_ATTEMPTED). Introduce target_submit_tmr_fail_response() to allow the user to directly provide the fail reason of the TMR command. Signed-off-by: Thinh Nguyen --- drivers/target/target_core_transport.c | 33 ++++++++++++++++++++++++++ include/target/target_core_fabric.h | 3 +++ 2 files changed, 36 insertions(+) diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 930bf8779d87..c899da241b38 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1989,6 +1989,39 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, } EXPORT_SYMBOL(target_submit_tmr); +void target_submit_tmr_fail_response(struct se_cmd *se_cmd, + enum tcm_tmrsp_table rsp, + struct se_session *se_sess, u64 unpacked_lun, + gfp_t gfp, u64 tag, int flags) +{ + struct se_portal_group *se_tpg; + int ret; + + se_tpg = se_sess->se_tpg; + BUG_ON(!se_tpg); + + __target_init_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess, + 0, DMA_NONE, TCM_SIMPLE_TAG, NULL, unpacked_lun); + + ret = core_tmr_alloc_req(se_cmd, NULL, TMR_UNKNOWN, gfp); + if (ret < 0) + return; + + se_cmd->se_tmr_req->ref_task_tag = tag; + se_cmd->se_tmr_req->response = rsp; + + /* See target_submit_cmd for commentary */ + ret = target_get_sess_cmd(se_cmd, flags & TARGET_SCF_ACK_KREF); + if (ret) { + core_tmr_release_req(se_cmd->se_tmr_req); + return; + } + + INIT_WORK(&se_cmd->work, target_complete_tmr_failure); + schedule_work(&se_cmd->work); +} +EXPORT_SYMBOL(target_submit_tmr_fail_response); + /* * Handle SAM-esque emulation for generic transport request failures. */ diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h index 38f0662476d1..73bf6b372926 100644 --- a/include/target/target_core_fabric.h +++ b/include/target/target_core_fabric.h @@ -172,6 +172,9 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, unsigned char *sense, u64 unpacked_lun, void *fabric_tmr_ptr, unsigned char tm_type, gfp_t, u64, int); +void target_submit_tmr_fail_response(struct se_cmd *se_cmd, + enum tcm_tmrsp_table rsp, + struct se_session *se_sess, u64 unpacked_lun, gfp_t, u64, int); int transport_handle_cdb_direct(struct se_cmd *); sense_reason_t transport_generic_new_cmd(struct se_cmd *);