From patchwork Thu Apr 22 15:34:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Anastasia Kovaleva X-Patchwork-Id: 12218817 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA202C43460 for ; Thu, 22 Apr 2021 15:44:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A3DA661425 for ; Thu, 22 Apr 2021 15:44:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239087AbhDVPoe (ORCPT ); Thu, 22 Apr 2021 11:44:34 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:58256 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S238547AbhDVPnF (ORCPT ); Thu, 22 Apr 2021 11:43:05 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 9F8C7413F6; Thu, 22 Apr 2021 15:42:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-transfer-encoding:content-type:content-type:mime-version :x-mailer:message-id:date:date:subject:subject:from:from :received:received:received; s=mta-01; t=1619106147; x= 1620920548; bh=Q90boRhCEYzbIaV+UraTatNsUvrTGS7p7EZog7TKZdI=; b=B sxlskXyGN2ZRVtaBiHbFArjbGjSPkYw+TmWBN0XeB43BNpEObGM5KjjgFYSBZKHe 5atHT/lNlZLAKdeoO9oYkAdrqMx/VPl/mddBNw9az9CpwFfz/FQMXxAuOIkenR6s 00vEMxVqV9R91jHsTMRGZfwgcg7J7w6RkaQGzAMj5A= 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 uAsv5-34Ivna; Thu, 22 Apr 2021 18:42:27 +0300 (MSK) Received: from T-EXCH-03.corp.yadro.com (t-exch-03.corp.yadro.com [172.17.100.103]) (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 67BB241580; Thu, 22 Apr 2021 18:34:34 +0300 (MSK) Received: from localhost (172.17.204.113) by T-EXCH-03.corp.yadro.com (172.17.100.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Thu, 22 Apr 2021 18:34:34 +0300 From: Anastasia Kovaleva To: CC: , , Anastasia Kovaleva , Roman Bolshakov Subject: [PATCH] scsi: qla2xxx: Prevent PRLI in target mode Date: Thu, 22 Apr 2021 18:34:14 +0300 Message-ID: <20210422153414.4022-1-a.kovaleva@yadro.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Originating-IP: [172.17.204.113] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-03.corp.yadro.com (172.17.100.103) Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In a case when the initiator in P2P mode by some circumstances do not send PRLI, the target, in a case when the target port’s WWPN is less than initiator’s one, changes the discovery state in DSC_GNL, and when gnl completes, it sends PRLI to the initiator. Usually the initiator in P2P mode always sends PRLI. We catch this issue on Linux stable v5.4.6 https://www.spinics.net/lists/stable/msg458515.html The change fixes this particular corner case in the behaviour of the P2P mod target login state machine. Fixes: a9ed06d4e640a ("scsi: qla2xxx: Allow PLOGI in target mode") Signed-off-by: Anastasia Kovaleva Reviewed-by: Roman Bolshakov Reviewed-by: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index f01f07116bd3..71f79c988fdc 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1194,6 +1194,9 @@ static int qla24xx_post_prli_work(struct scsi_qla_host *vha, fc_port_t *fcport) { struct qla_work_evt *e; + if (vha->host->active_mode == MODE_TARGET) + return QLA_FUNCTION_FAILED; + e = qla2x00_alloc_work(vha, QLA_EVT_PRLI); if (!e) return QLA_FUNCTION_FAILED;