From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 EE8C0C33C8C for ; Tue, 7 Jan 2020 16:59:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B56A4206DB for ; Tue, 7 Jan 2020 16:59:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="EAV9cfjX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B56A4206DB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53174 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iosCT-0007gd-Jw for qemu-devel@archiver.kernel.org; Tue, 07 Jan 2020 11:59:25 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46981) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iorlO-0008C2-Bs for qemu-devel@nongnu.org; Tue, 07 Jan 2020 11:31:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iorlN-0005cU-5J for qemu-devel@nongnu.org; Tue, 07 Jan 2020 11:31:26 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:25670 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iorlN-0005cF-1o for qemu-devel@nongnu.org; Tue, 07 Jan 2020 11:31:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578414684; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5EhLJ8ESaItKzPeue3PIZ6PBy1w7sicN5shNVXQfGIo=; b=EAV9cfjXaw2NTFyNadIfQNkGdEwgnd5byYhoW3OkvxYXFddP7hrZO2Q+mYmIBvwKnKT9lA Ae3B9wO9TlhtAkYwuS6m+GVCOkqCo4iciSYV3KaWBY4xtqT7++RiRrZQT1jt1sKramkkR/ /5gzdZ/qXyns22idkELQGs0Frk86/yQ= Received: from mail-qv1-f69.google.com (mail-qv1-f69.google.com [209.85.219.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-359-M4vKjBZzNse9x2nYKlKJ-A-1; Tue, 07 Jan 2020 11:31:23 -0500 Received: by mail-qv1-f69.google.com with SMTP id l1so238698qvu.13 for ; Tue, 07 Jan 2020 08:31:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=wp7IEacTPDnbh2fT1ey9LJUjRbVmj0GN0bCAT90OXe4=; b=YwTSeQnfry0l1VpZW25HENuQmDLRiXgQ00plewEM9HdRevDQjsXB7laxWv2AzqVcJS 4LNSO8OHDkFRjpDwKlfG85ow/ZHsKziCLHnZYSj5axC6Ebz52VHAFUCWT0DskzB/sNWW bZlf8IxBpeRPb7MACSPD0rGXR+hLwZkPkooEME538+X6eA1y7Kxtvib44o0CY544kXnh zA8Ozl/yFUrdFbLyD0RGHLxvOXT8GdrU8XoX3mqnKayYzOcHunTajuUyNtKag3WWqkh/ golETSGAYJP143X63OjpkzCoPIee3HLT+9Ju7Aa7/gZiU0Z2GxX8pNsL2uggp842H2j3 Ou7Q== X-Gm-Message-State: APjAAAUNQEan8L7AecAWY2eP6UGOQAqPAB8eQGMx/BSkofoZOhJ8N/MF fG8/KLoJI1YvOH0aERp7uoVjTl7Rhs5fc4xlHvEoDji5/z/8RmM6ACEBaE8mnM2KcrHBQWMD4uz cThZoCCav/MZv700= X-Received: by 2002:ae9:f80d:: with SMTP id x13mr156333qkh.226.1578414682835; Tue, 07 Jan 2020 08:31:22 -0800 (PST) X-Google-Smtp-Source: APXvYqwS1Lsg7YmN4uiPzCU6FEB8sVBZTlaTRhM0vdtVfv26YYL71hps7Rz//4Khg6RLOFKISBC0bA== X-Received: by 2002:ae9:f80d:: with SMTP id x13mr156308qkh.226.1578414682582; Tue, 07 Jan 2020 08:31:22 -0800 (PST) Received: from redhat.com (bzq-79-183-34-164.red.bezeqint.net. [79.183.34.164]) by smtp.gmail.com with ESMTPSA id o6sm36586qkk.53.2020.01.07.08.31.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jan 2020 08:31:21 -0800 (PST) Date: Tue, 7 Jan 2020 11:31:18 -0500 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Subject: [PULL v3 24/32] vhost-user-scsi: reset the device if supported Message-ID: <20200107162850.411448-25-mst@redhat.com> References: <20200107162850.411448-1-mst@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200107162850.411448-1-mst@redhat.com> X-Mailer: git-send-email 2.24.1.751.gd10ce2899c X-Mutt-Fcc: =sent X-MC-Unique: M4vKjBZzNse9x2nYKlKJ-A-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Peter Maydell , Paolo Bonzini , David Vrabel , Raphael Norwitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Raphael Norwitz If the vhost-user-scsi backend supports the VHOST_USER_F_RESET_DEVICE protocol feature, then the device can be reset when requested. If this feature is not supported, do not try a reset as this will send a VHOST_USER_RESET_OWNER that the backend is not expecting, potentially putting into an inoperable state. Signed-off-by: David Vrabel Signed-off-by: Raphael Norwitz Message-Id: <1572385083-5254-3-git-send-email-raphael.norwitz@nutanix.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/scsi/vhost-user-scsi.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c index 6a6c15dd32..23f972df59 100644 --- a/hw/scsi/vhost-user-scsi.c +++ b/hw/scsi/vhost-user-scsi.c @@ -39,6 +39,10 @@ static const int user_feature_bits[] =3D { VHOST_INVALID_FEATURE_BIT }; =20 +enum VhostUserProtocolFeature { + VHOST_USER_PROTOCOL_F_RESET_DEVICE =3D 13, +}; + static void vhost_user_scsi_set_status(VirtIODevice *vdev, uint8_t status) { VHostUserSCSI *s =3D (VHostUserSCSI *)vdev; @@ -62,6 +66,25 @@ static void vhost_user_scsi_set_status(VirtIODevice *vde= v, uint8_t status) } } =20 +static void vhost_user_scsi_reset(VirtIODevice *vdev) +{ + VHostSCSICommon *vsc =3D VHOST_SCSI_COMMON(vdev); + struct vhost_dev *dev =3D &vsc->dev; + + /* + * Historically, reset was not implemented so only reset devices + * that are expecting it. + */ + if (!virtio_has_feature(dev->protocol_features, + VHOST_USER_PROTOCOL_F_RESET_DEVICE)) { + return; + } + + if (dev->vhost_ops->vhost_reset_device) { + dev->vhost_ops->vhost_reset_device(dev); + } +} + static void vhost_dummy_handle_output(VirtIODevice *vdev, VirtQueue *vq) { } @@ -182,6 +205,7 @@ static void vhost_user_scsi_class_init(ObjectClass *kla= ss, void *data) vdc->get_features =3D vhost_scsi_common_get_features; vdc->set_config =3D vhost_scsi_common_set_config; vdc->set_status =3D vhost_user_scsi_set_status; + vdc->reset =3D vhost_user_scsi_reset; fwc->get_dev_path =3D vhost_scsi_common_get_fw_dev_path; } =20 --=20 MST