From patchwork Tue May 24 17:06:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 12860377 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41019C433FE for ; Tue, 24 May 2022 17:06:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239838AbiEXRGc (ORCPT ); Tue, 24 May 2022 13:06:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57494 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239825AbiEXRGa (ORCPT ); Tue, 24 May 2022 13:06:30 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C7E6168998 for ; Tue, 24 May 2022 10:06:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653411989; 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=ese622/PjwlbZK8BGVrfy4abZ5tLs60liyPxNETnN7U=; b=R+BaXGgSRtdRGuAmV+JpDdZM/OfC/ZEYgDiKk4DEf9LHOcplnVaFQ7eSDEENzYg56+MuH5 630IdP2q/FvCTSV8YI0jdCvdK4Fm6A/bekiqckSYVEmKDhtPI9yVRNAHQd/eaiKlOhGzJE vqqsT01uG1ImvufP57CvKcXOnmw6DZE= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-140-16yW63O5N3qchf5XfyAvpg-1; Tue, 24 May 2022 13:06:23 -0400 X-MC-Unique: 16yW63O5N3qchf5XfyAvpg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4E8A83C1E328; Tue, 24 May 2022 17:06:22 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.195.73]) by smtp.corp.redhat.com (Postfix) with ESMTP id C19F22026D64; Tue, 24 May 2022 17:06:17 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, Jason Wang , "Michael S. Tsirkin" , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Parav Pandit , Zhang Min , hanand@xilinx.com, Zhu Lingshan , tanuj.kamde@amd.com, gautam.dawar@amd.com, Christophe JAILLET , Xie Yongji , dinang@xilinx.com, habetsm.xilinx@gmail.com, Eli Cohen , pabloc@xilinx.com, lvivier@redhat.com, Dan Carpenter , lulu@redhat.com, Wu Zongyong , eperezma@redhat.com, ecree.xilinx@gmail.com, Piotr.Uminski@intel.com, martinpo@xilinx.com, Stefano Garzarella , Si-Wei Liu , Longpeng , martinh@xilinx.com Subject: [PATCH v2 1/4] vdpa: Add stop operation Date: Tue, 24 May 2022 19:06:07 +0200 Message-Id: <20220524170610.2255608-2-eperezma@redhat.com> In-Reply-To: <20220524170610.2255608-1-eperezma@redhat.com> References: <20220524170610.2255608-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This operation is optional: It it's not implemented, backend feature bit will not be exposed. Signed-off-by: Eugenio Pérez --- include/linux/vdpa.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 15af802d41c4..ddfebc4e1e01 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -215,6 +215,11 @@ struct vdpa_map_file { * @reset: Reset device * @vdev: vdpa device * Returns integer: success (0) or error (< 0) + * @stop: Stop or resume the device (optional, but it must + * be implemented if require device stop) + * @vdev: vdpa device + * @stop: stop (true), not stop (false) + * Returns integer: success (0) or error (< 0) * @get_config_size: Get the size of the configuration space includes * fields that are conditional on feature bits. * @vdev: vdpa device @@ -316,6 +321,7 @@ struct vdpa_config_ops { u8 (*get_status)(struct vdpa_device *vdev); void (*set_status)(struct vdpa_device *vdev, u8 status); int (*reset)(struct vdpa_device *vdev); + int (*stop)(struct vdpa_device *vdev, bool stop); size_t (*get_config_size)(struct vdpa_device *vdev); void (*get_config)(struct vdpa_device *vdev, unsigned int offset, void *buf, unsigned int len);