From mboxrd@z Thu Jan 1 00:00:00 1970 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=-17.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 51A00C1B0D8 for ; Fri, 4 Dec 2020 04:06:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 338DA223D6 for ; Fri, 4 Dec 2020 04:06:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728204AbgLDEGT (ORCPT ); Thu, 3 Dec 2020 23:06:19 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:59517 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726080AbgLDEGS (ORCPT ); Thu, 3 Dec 2020 23:06:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607054692; 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=rlSrvPYi7Sf8S1ru+B79DHoQTOX3kJJE4+lQVOglXBY=; b=FGqxf/7l15Mdn8i+qkbyyN9EGCRsAlMGILsOATGfDwXMNvhqtx0hkG2h8noAal98lflcFX JB0nZgSw28aBzcmrpQYpkAW5C4KiWPphWyGds809jve29xA3vdD3afpRgZx0/Aw9nfUKdf wI2LKzzNZRMCogvSDw+GhXD/z7dsSbQ= 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-367-lwagjO8PNXOT0IdvcRSONw-1; Thu, 03 Dec 2020 23:04:50 -0500 X-MC-Unique: lwagjO8PNXOT0IdvcRSONw-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 3868D1842140; Fri, 4 Dec 2020 04:04:49 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-12-116.pek2.redhat.com [10.72.12.116]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1CDC01A890; Fri, 4 Dec 2020 04:04:45 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: shahafs@mellanox.com Subject: [PATCH V2 13/19] virtio-pci-modern: introduce helper for getting queue nums Date: Fri, 4 Dec 2020 12:03:47 +0800 Message-Id: <20201204040353.21679-14-jasowang@redhat.com> In-Reply-To: <20201204040353.21679-1-jasowang@redhat.com> References: <20201204040353.21679-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces helper for getting queue num of modern device. Signed-off-by: Jason Wang --- drivers/virtio/virtio_pci_modern.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index 7a89226135af..bccad1329871 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -292,6 +292,17 @@ static u16 vp_modern_get_queue_size(struct virtio_pci_modern_device *mdev, } +/* + * vp_modern_get_num_queues - get the number of virtqueues + * @mdev: the modern virtio-pci device + * + * Returns the number of virtqueues + */ +static u16 vp_modern_get_num_queues(struct virtio_pci_modern_device *mdev) +{ + return vp_ioread16(&mdev->common->num_queues); +} + /* virtio config->finalize_features() implementation */ static int vp_finalize_features(struct virtio_device *vdev) { @@ -510,7 +521,7 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, u16 num, off; int err; - if (index >= vp_ioread16(&cfg->num_queues)) + if (index >= vp_modern_get_num_queues(mdev)) return ERR_PTR(-ENOENT); /* Select the queue we're interested in */ -- 2.25.1