Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp1261544pxb; Thu, 21 Oct 2021 19:47:32 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyV8JxQ1opG79e3+YOnnl9Qn6+/OIiw6WwoWD+lyqAryrSG8+jAFKcnmB4oaw2BDH2feSn3 X-Received: by 2002:a17:907:7212:: with SMTP id dr18mr12085568ejc.298.1634870852636; Thu, 21 Oct 2021 19:47:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1634870852; cv=none; d=google.com; s=arc-20160816; b=nJgK/omx4ynA7KhkmWEpKevTsD3pqO32N041UiEk9GjMFc3o3AgrePxCnGKH/VkpOA tMY9n7P1VJdtwU/Xwfxkvx3eEEszYMwg002nzLczbjdwgPMCrwgUC4gJWzIjh/xn244E 2goDnNsHPLmezerAQNpIcPTfyQFM/uCtCdIVUdI4ff9F4JnHzQpSKOi1zBravOrGtNJL DerDh/hlf9IX7EddOMYcB/C+9MuKRiSKLYni78jCmbZkIwxfk73KNtS1tW1bXoX3ZL/w aSB28CrLeSWsc6Cw95U7AjKri8z5GmIaXtTrJrleUwTGVh4n4UQRcfpNVsOKJNLkaz1z 6sCg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=Wryc5/dJgBqaLkcrhFwGrnHbVAtRpWJZAq/hISH9UlI=; b=u8endEnKKhpIYCO6kMAmD9GEbWASduJhuwT9M/HW6oYeEbQb55ug8kd8JSoXuJIJmp 7y+vaJB85Fq42+/O9kM7T0iUj3Ep/R4n7IclFIskXVeYFqlKov+TtzWTNSoJbKneia0E aQ4gp3PO+wvYNqAoX/iFE5Pblsm0wfc6gZWLEoy5FHiVz6tukhmPAEpH7vkMZQB0bjtN bGQL7n2SIR0rVnCohbDkEByvWzDLdW7kgcTyFSKZHSz6np+t+LqhXs/SOI3nsZ8OKbW3 sNMsucvQiVJklE76hpU+7kkU6nqabJNbPJ2ojDeZtC0AN8wOd0eN+qlmISmGHXHjyXnf vViA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id nb24si11111472ejc.544.2021.10.21.19.47.09; Thu, 21 Oct 2021 19:47:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232499AbhJVCrC (ORCPT + 99 others); Thu, 21 Oct 2021 22:47:02 -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