From patchwork Tue May 3 20:06:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 12836189 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 3E7F2C433EF for ; Tue, 3 May 2022 20:07:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235157AbiECULK (ORCPT ); Tue, 3 May 2022 16:11:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237668AbiECUKw (ORCPT ); Tue, 3 May 2022 16:10:52 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39DFC26AC3 for ; Tue, 3 May 2022 13:07:19 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 2BC7721871; Tue, 3 May 2022 20:07:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1651608435; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FDzwj623m4ERVeuC9SXdcTfFCidDKGHCEKdBxQiSFiI=; b=Uw3xQ7XzYHYoFei3jC5nXqDB906TcoDVItOGjvorQbBRr3M03+ihpUDnjcdwBGs4FBTopQ X/ZZtEfNuvWXtEzQ9WLW7VJHUXqRPpe017b0E0y44UKrfuoUKEVYWfYzk1HHH9XRYIvnM8 Xp5uWyfS4NlQb8xU/sWGoJO81AxX5N0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1651608435; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FDzwj623m4ERVeuC9SXdcTfFCidDKGHCEKdBxQiSFiI=; b=ds2489h91ndJYS4UUKi2P+XONHEhf+M5fiSEQ4kWnq6bgObgyvRjYtCNtX8Frdy1PI2fzA S5QREX7ewGEoCSCw== Received: from adalid.arch.suse.de (adalid.arch.suse.de [10.161.8.13]) by relay2.suse.de (Postfix) with ESMTP id 0EF0E2C15B; Tue, 3 May 2022 20:07:15 +0000 (UTC) Received: by adalid.arch.suse.de (Postfix, from userid 16045) id 1DEE651941D8; Tue, 3 May 2022 22:07:15 +0200 (CEST) From: Hannes Reinecke To: "Martin K. Petersen" Cc: Christoph Hellwig , James Bottomley , linux-scsi@vger.kernel.org, Hannes Reinecke , Tyrel Datwyler Subject: [PATCH 09/24] ibmvfc: open-code reset loop for target reset Date: Tue, 3 May 2022 22:06:49 +0200 Message-Id: <20220503200704.88003-10-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20220503200704.88003-1-hare@suse.de> References: <20220503200704.88003-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org For target reset we need a device to send the target reset to, so open-code the loop in target reset to send the target reset TMF to the correct device. Signed-off-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Cc: Tyrel Datwyler --- drivers/scsi/ibmvscsi/ibmvfc.c | 42 +++++++++++++++++++--------------- 1 file changed, 23 insertions(+), 19 deletions(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index d0eab5700dc5..721d965f4b0e 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -2925,18 +2925,6 @@ static void ibmvfc_dev_cancel_all_noreset(struct scsi_device *sdev, void *data) *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_SUPPRESS_ABTS); } -/** - * ibmvfc_dev_cancel_all_reset - Device iterated cancel all function - * @sdev: scsi device struct - * @data: return code - * - **/ -static void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data) -{ - unsigned long *rc = data; - *rc |= ibmvfc_cancel_all(sdev, IBMVFC_TMF_TGT_RESET); -} - /** * ibmvfc_eh_target_reset_handler - Reset the target * @cmd: scsi command struct @@ -2946,22 +2934,38 @@ static void ibmvfc_dev_cancel_all_reset(struct scsi_device *sdev, void *data) **/ static int ibmvfc_eh_target_reset_handler(struct scsi_cmnd *cmd) { - struct scsi_device *sdev = cmd->device; - struct ibmvfc_host *vhost = shost_priv(sdev->host); - struct scsi_target *starget = scsi_target(sdev); + struct scsi_target *starget = scsi_target(cmd->device); + struct fc_rport *rport = starget_to_rport(starget); + struct Scsi_Host *shost = rport_to_shost(rport); + struct ibmvfc_host *vhost = shost_priv(shost); int block_rc; int reset_rc = 0; int rc = FAILED; unsigned long cancel_rc = 0; + bool tgt_reset = false; ENTER; - block_rc = fc_block_scsi_eh(cmd); + block_rc = fc_block_rport(rport); ibmvfc_wait_while_resetting(vhost); if (block_rc != FAST_IO_FAIL) { - starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_reset); - reset_rc = ibmvfc_reset_device(sdev, IBMVFC_TARGET_RESET, "target"); + struct scsi_device *sdev; + + shost_for_each_device(sdev, shost) { + if ((sdev->channel != starget->channel) || + (sdev->id != starget->id)) + continue; + + cancel_rc |= ibmvfc_cancel_all(sdev, + IBMVFC_TMF_TGT_RESET); + if (!tgt_reset) { + reset_rc = ibmvfc_reset_device(sdev, + IBMVFC_TARGET_RESET, "target"); + tgt_reset = true; + } + } } else - starget_for_each_device(starget, &cancel_rc, ibmvfc_dev_cancel_all_noreset); + starget_for_each_device(starget, &cancel_rc, + ibmvfc_dev_cancel_all_noreset); if (!cancel_rc && !reset_rc) rc = ibmvfc_wait_for_ops(vhost, starget, ibmvfc_match_target);