From patchwork Fri Nov 20 18:50:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 11921981 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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 DA139C56201 for ; Fri, 20 Nov 2020 18:58:05 +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 4CBC720760 for ; Fri, 20 Nov 2020 18:58:05 +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="g54XMXCC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4CBC720760 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]:40848 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kgBbg-00007M-8q for qemu-devel@archiver.kernel.org; Fri, 20 Nov 2020 13:58:04 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40768) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kgBW6-0004Pd-1q for qemu-devel@nongnu.org; Fri, 20 Nov 2020 13:52:18 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:34998) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kgBW4-00070H-AT for qemu-devel@nongnu.org; Fri, 20 Nov 2020 13:52:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605898335; 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=f1xuNkaaPUcrhHGAqp8H+FXDGPjhfJDXls907UFvbJo=; b=g54XMXCCRdOh7wxzq8edRmtDXM/MfH/UxkG1FkPv+qHs3qMX+qVCkqfcL3ZedSEHnHmi2l RopbTdT5fFDH++GYZjotreCCN4ULRN023dNRp5fS3MVtulYLqt/oSZrorl9HgO/JRLAh3p THEq89Jrqgl+qJ1x1y9b4HGRT2e57c4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-139-BqEhkUiMPp2_cG8WPQgPOg-1; Fri, 20 Nov 2020 13:52:13 -0500 X-MC-Unique: BqEhkUiMPp2_cG8WPQgPOg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 38DCE8030BC; Fri, 20 Nov 2020 18:52:10 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-112-88.ams2.redhat.com [10.36.112.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0DEE05C1D5; Fri, 20 Nov 2020 18:51:52 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC PATCH 04/27] vhost: add vhost_kernel_set_vring_enable Date: Fri, 20 Nov 2020 19:50:42 +0100 Message-Id: <20201120185105.279030-5-eperezma@redhat.com> In-Reply-To: <20201120185105.279030-1-eperezma@redhat.com> References: <20201120185105.279030-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Received-SPF: pass client-ip=216.205.24.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" , Jason Wang , Daniel Daly , virtualization@lists.linux-foundation.org, Liran Alon , Eli Cohen , Nitin Shrivastav , Alex Barba , Christophe Fontaine , Juan Quintela , Lee Ballard , Lars Ganrot , Rob Miller , Stefano Garzarella , Howard Cai , Parav Pandit , vm , Salil Mehta , Stephen Finucane , Xiao W Wang , Sean Mooney , Stefan Hajnoczi , Jim Harford , Dmytro Kazantsev , Siwei Liu , Harpreet Singh Anand , Michael Lilja , Max Gurtovoy Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Eugenio Pérez --- hw/virtio/vhost-backend.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/hw/virtio/vhost-backend.c b/hw/virtio/vhost-backend.c index 222bbcc62d..317f1f96fa 100644 --- a/hw/virtio/vhost-backend.c +++ b/hw/virtio/vhost-backend.c @@ -201,6 +201,34 @@ static int vhost_kernel_get_vq_index(struct vhost_dev *dev, int idx) return idx - dev->vq_index; } +static int vhost_kernel_set_vq_enable(struct vhost_dev *dev, unsigned idx, + bool enable) +{ + struct vhost_vring_file file = { + .index = idx, + }; + + if (!enable) { + file.fd = -1; /* Pass -1 to unbind from file. */ + } else { + struct vhost_net *vn_dev = container_of(dev, struct vhost_net, dev); + file.fd = vn_dev->backend; + } + + return vhost_kernel_net_set_backend(dev, &file); +} + +static int vhost_kernel_set_vring_enable(struct vhost_dev *dev, int enable) +{ + int i; + + for (i = 0; i < dev->nvqs; ++i) { + vhost_kernel_set_vq_enable(dev, i, enable); + } + + return 0; +} + #ifdef CONFIG_VHOST_VSOCK static int vhost_kernel_vsock_set_guest_cid(struct vhost_dev *dev, uint64_t guest_cid) @@ -317,6 +345,7 @@ static const VhostOps kernel_ops = { .vhost_set_owner = vhost_kernel_set_owner, .vhost_reset_device = vhost_kernel_reset_device, .vhost_get_vq_index = vhost_kernel_get_vq_index, + .vhost_set_vring_enable = vhost_kernel_set_vring_enable, #ifdef CONFIG_VHOST_VSOCK .vhost_vsock_set_guest_cid = vhost_kernel_vsock_set_guest_cid, .vhost_vsock_set_running = vhost_kernel_vsock_set_running,