From patchwork Sun Aug 27 18:29:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laszlo Ersek X-Patchwork-Id: 13367393 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 814E5C83F01 for ; Sun, 27 Aug 2023 18:31:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qaKWK-00079e-PF; Sun, 27 Aug 2023 14:29:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qaKWJ-00075R-0J for qemu-devel@nongnu.org; Sun, 27 Aug 2023 14:29:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qaKWG-0004a5-VZ for qemu-devel@nongnu.org; Sun, 27 Aug 2023 14:29:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1693160992; h=from:from:reply-to:subject:subject: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=npmlCi7Dwvg49ltOJ4nTDOFuGLl47ki2RTfn33quhdw=; b=Zj3fD3CT7uv8bP4j0MB1wtMzJedW3k04Gq4Yrr5p/2eEWWUYKl1Qx3vJ2ny6sRv3dHD4YM M1W2OSWuGFxVP+aipYdjfFhBCZJS9Ehlau74a9a8RrUxIfZAQ6wUtf57xr67b54EzsScYT AWk5AKLlgOnPT2lNqwPEs56v3jV2u3w= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-47-RxarlRqWMAWRmh8jrv8veA-1; Sun, 27 Aug 2023 14:29:48 -0400 X-MC-Unique: RxarlRqWMAWRmh8jrv8veA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id F2B03101A52E; Sun, 27 Aug 2023 18:29:47 +0000 (UTC) Received: from lacos-laptop-9.usersys.redhat.com (unknown [10.39.192.28]) by smtp.corp.redhat.com (Postfix) with ESMTP id 81A14140E950; Sun, 27 Aug 2023 18:29:46 +0000 (UTC) From: Laszlo Ersek To: qemu-devel@nongnu.org, lersek@redhat.com Cc: "Michael S. Tsirkin" , Eugenio Perez Martin , German Maglione , Liu Jiang , Sergio Lopez Pascual , Stefano Garzarella Subject: [PATCH 4/7] vhost-user: flatten "enforce_reply" into "vhost_user_write_msg" Date: Sun, 27 Aug 2023 20:29:34 +0200 Message-Id: <20230827182937.146450-5-lersek@redhat.com> In-Reply-To: <20230827182937.146450-1-lersek@redhat.com> References: <20230827182937.146450-1-lersek@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.129.124; envelope-from=lersek@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MIME_BASE64_TEXT=1.741, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org At this point, only "vhost_user_write_msg" calls "enforce_reply"; embed the latter into the former. This is purely refactoring -- no observable change. Cc: "Michael S. Tsirkin" (supporter:vhost) Cc: Eugenio Perez Martin Cc: German Maglione Cc: Liu Jiang Cc: Sergio Lopez Pascual Cc: Stefano Garzarella Signed-off-by: Laszlo Ersek Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Stefano Garzarella --- hw/virtio/vhost-user.c | 32 ++++++++------------ 1 file changed, 13 insertions(+), 19 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 36f99b66a644..8eb7fd094c43 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1302,24 +1302,6 @@ static int vhost_user_get_features(struct vhost_dev *dev, uint64_t *features) return 0; } -static int enforce_reply(struct vhost_dev *dev, - const VhostUserMsg *msg) -{ - uint64_t dummy; - - if (msg->hdr.flags & VHOST_USER_NEED_REPLY_MASK) { - return process_message_reply(dev, msg); - } - - /* - * We need to wait for a reply but the backend does not - * support replies for the command we just sent. - * Send VHOST_USER_GET_FEATURES which makes all backends - * send a reply. - */ - return vhost_user_get_features(dev, &dummy); -} - /* Note: "msg->hdr.flags" may be modified. */ static int vhost_user_write_msg(struct vhost_dev *dev, VhostUserMsg *msg, bool wait_for_reply) @@ -1340,7 +1322,19 @@ static int vhost_user_write_msg(struct vhost_dev *dev, VhostUserMsg *msg, } if (wait_for_reply) { - return enforce_reply(dev, msg); + uint64_t dummy; + + if (msg->hdr.flags & VHOST_USER_NEED_REPLY_MASK) { + return process_message_reply(dev, msg); + } + + /* + * We need to wait for a reply but the backend does not + * support replies for the command we just sent. + * Send VHOST_USER_GET_FEATURES which makes all backends + * send a reply. + */ + return vhost_user_get_features(dev, &dummy); } return 0;