From patchwork Fri Jan 29 20:54:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 12056555 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 946E6C433DB for ; Fri, 29 Jan 2021 20:59:37 +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 01F3264E06 for ; Fri, 29 Jan 2021 20:59:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 01F3264E06 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]:40824 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l5arf-0002m0-UQ for qemu-devel@archiver.kernel.org; Fri, 29 Jan 2021 15:59:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57858) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l5anN-0007B3-BK for qemu-devel@nongnu.org; Fri, 29 Jan 2021 15:55:09 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:22044) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l5anE-0002jb-RO for qemu-devel@nongnu.org; Fri, 29 Jan 2021 15:55:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611953699; 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=BeNbSiH/MHVx9FqrvgesPLa7GE7RAy1abAUIrVRnGa4=; b=TcH+N9c1xKjKkJ1fKrvuGdrC44WnR6cVbvxPdvITzS9q/2nOcnevFqr1kGrJrKOeyvRFbF JfmDNWfaydGL6xPnr/7u3ORk0sEqCRWDvECCmcweabBhYRp2pUSYqlHjmztqqWxq202mDX UlA26R9JyhH8ODVnhci68w9NrEldbb8= 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-278-zBUJaK8hO0ChJDjOXxtmdA-1; Fri, 29 Jan 2021 15:54:58 -0500 X-MC-Unique: zBUJaK8hO0ChJDjOXxtmdA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AD7BC18C89C4; Fri, 29 Jan 2021 20:54:56 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-113-115.ams2.redhat.com [10.36.113.115]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3DA6919D7C; Fri, 29 Jan 2021 20:54:53 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC 05/10] vhost: Add vhost_dev_from_virtio Date: Fri, 29 Jan 2021 21:54:10 +0100 Message-Id: <20210129205415.876290-6-eperezma@redhat.com> In-Reply-To: <20210129205415.876290-1-eperezma@redhat.com> References: <20210129205415.876290-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.249, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=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: Parav Pandit , "Michael S. Tsirkin" , Jason Wang , Juan Quintela , Markus Armbruster , virtualization@lists.linux-foundation.org, Harpreet Singh Anand , Xiao W Wang , Stefan Hajnoczi , Eli Cohen , Stefano Garzarella , Michael Lilja , Jim Harford , Rob Miller Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost.h | 1 + hw/virtio/vhost.c | 17 +++++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 4a8bc75415..fca076e3f0 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -123,6 +123,7 @@ uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits, void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits, uint64_t features); bool vhost_has_free_slot(void); +struct vhost_dev *vhost_dev_from_virtio(const VirtIODevice *vdev); int vhost_net_set_backend(struct vhost_dev *hdev, struct vhost_vring_file *file); diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 28c7d78172..8683d507f5 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -61,6 +61,23 @@ bool vhost_has_free_slot(void) return slots_limit > used_memslots; } +/* + * Get the vhost device associated to a VirtIO device. + */ +struct vhost_dev *vhost_dev_from_virtio(const VirtIODevice *vdev) +{ + struct vhost_dev *hdev; + + QLIST_FOREACH(hdev, &vhost_devices, entry) { + if (hdev->vdev == vdev) { + return hdev; + } + } + + assert(hdev); + return NULL; +} + static void vhost_dev_sync_region(struct vhost_dev *dev, MemoryRegionSection *section, uint64_t mfirst, uint64_t mlast,