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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8FA64C433FE for ; Fri, 22 Oct 2021 02:44:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 768846139F for ; Fri, 22 Oct 2021 02:44:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232505AbhJVCrD (ORCPT ); Thu, 21 Oct 2021 22:47:03 -0400 Received: from out30-44.freemail.mail.aliyun.com ([115.124.30.44]:57428 "EHLO out30-44.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232440AbhJVCq7 (ORCPT ); Thu, 21 Oct 2021 22:46:59 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=wuzongyong@linux.alibaba.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---0UtCtrLa_1634870672; Received: from localhost.localdomain(mailfrom:wuzongyong@linux.alibaba.com fp:SMTPD_---0UtCtrLa_1634870672) by smtp.aliyun-inc.com(127.0.0.1); Fri, 22 Oct 2021 10:44:41 +0800 From: Wu Zongyong To: wuzongyong@linux.alibaba.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, mst@redhat.com Cc: wei.yang1@linux.alibaba.com Subject: [PATCH v6 4/8] vdpa: add new callback get_vq_num_min in vdpa_config_ops Date: Fri, 22 Oct 2021 10:44:19 +0800 Message-Id: <7e4d859949fa37fce2289a4b287843cdeffcaf8a.1634870456.git.wuzongyong@linux.alibaba.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This callback is optional. For vdpa devices that not support to change virtqueue size, get_vq_num_min and get_vq_num_max will return the same value, so that users can choose a correct value for that device. Suggested-by: Jason Wang Signed-off-by: Wu Zongyong --- include/linux/vdpa.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index a896ee021e5f..30864848950b 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -171,6 +171,9 @@ struct vdpa_map_file { * @get_vq_num_max: Get the max size of virtqueue * @vdev: vdpa device * Returns u16: max size of virtqueue + * @get_vq_num_min: Get the min size of virtqueue (optional) + * @vdev: vdpa device + * Returns u16: min size of virtqueue * @get_device_id: Get virtio device id * @vdev: vdpa device * Returns u32: virtio device id @@ -266,6 +269,7 @@ struct vdpa_config_ops { void (*set_config_cb)(struct vdpa_device *vdev, struct vdpa_callback *cb); u16 (*get_vq_num_max)(struct vdpa_device *vdev); + u16 (*get_vq_num_min)(struct vdpa_device *vdev); u32 (*get_device_id)(struct vdpa_device *vdev); u32 (*get_vendor_id)(struct vdpa_device *vdev); u8 (*get_status)(struct vdpa_device *vdev); -- 2.31.1