From patchwork Fri Jun 19 18:22:59 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: 11614905 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2891A913 for ; Fri, 19 Jun 2020 18:24:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1228D21548 for ; Fri, 19 Jun 2020 18:24:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="a51yvuZg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731525AbgFSSYf (ORCPT ); Fri, 19 Jun 2020 14:24:35 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:34826 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2405424AbgFSSXm (ORCPT ); Fri, 19 Jun 2020 14:23:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1592591021; 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=MQa85S+Gu9mVyqbk6eUj8fFtN+Dd+Dol2b2QZrFCNIg=; b=a51yvuZgVRwy93UXFg+jrP41K065x62hhcfvcIkb+RV8Yn2Wg/lrwbA0em1Kza1EeUdbFj cLNOdDj+Y3YFERuwQNfe6D4SN2rDhMc2JBOcrR+UukIufgPe6OjJU3HVMlaqZ0mUrjYrUQ wGyr8q8Rbo7//pFM+EOUHOpcM3jiiU4= 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-127-CiGvTY12PFKdDV5VNrlB1g-1; Fri, 19 Jun 2020 14:23:38 -0400 X-MC-Unique: CiGvTY12PFKdDV5VNrlB1g-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2F4AF8015CE; Fri, 19 Jun 2020 18:23:37 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-113-14.ams2.redhat.com [10.36.113.14]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3D11A1C8; Fri, 19 Jun 2020 18:23:35 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: mst@redhat.com Cc: kvm list , Stefano Garzarella , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Stefan Hajnoczi , Jason Wang Subject: [RFC v9 08/11] vhost/test: convert to the buf API Date: Fri, 19 Jun 2020 20:22:59 +0200 Message-Id: <20200619182302.850-9-eperezma@redhat.com> In-Reply-To: <20200619182302.850-1-eperezma@redhat.com> References: <20200619182302.850-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: "Michael S. Tsirkin" Signed-off-by: Michael S. Tsirkin Signed-off-by: Eugenio Pérez --- drivers/vhost/test.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c index 650e69261557..39e68f797a93 100644 --- a/drivers/vhost/test.c +++ b/drivers/vhost/test.c @@ -44,9 +44,10 @@ static void handle_vq(struct vhost_test *n) { struct vhost_virtqueue *vq = &n->vqs[VHOST_TEST_VQ]; unsigned out, in; - int head; + int ret; size_t len, total_len = 0; void *private; + struct vhost_buf buf; mutex_lock(&vq->mutex); private = vhost_vq_get_backend(vq); @@ -58,15 +59,15 @@ static void handle_vq(struct vhost_test *n) vhost_disable_notify(&n->dev, vq); for (;;) { - head = vhost_get_vq_desc(vq, vq->iov, - ARRAY_SIZE(vq->iov), - &out, &in, - NULL, NULL); + ret = vhost_get_avail_buf(vq, &buf, vq->iov, + ARRAY_SIZE(vq->iov), + &out, &in, + NULL, NULL); /* On error, stop handling until the next kick. */ - if (unlikely(head < 0)) + if (unlikely(ret < 0)) break; /* Nothing new? Wait for eventfd to tell us they refilled. */ - if (head == vq->num) { + if (!ret) { if (unlikely(vhost_enable_notify(&n->dev, vq))) { vhost_disable_notify(&n->dev, vq); continue; @@ -78,13 +79,14 @@ static void handle_vq(struct vhost_test *n) "out %d, int %d\n", out, in); break; } - len = iov_length(vq->iov, out); + len = buf.out_len; /* Sanity check */ if (!len) { vq_err(vq, "Unexpected 0 len for TX\n"); break; } - vhost_add_used_and_signal(&n->dev, vq, head, 0); + vhost_put_used_buf(vq, &buf); + vhost_signal(&n->dev, vq); total_len += len; if (unlikely(vhost_exceeds_weight(vq, 0, total_len))) break;