Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp2484815pxb; Fri, 29 Oct 2021 02:18:45 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw2AKbThzWmX94zIUc5pSp6Cp6LT4vhhvHaNXXFNLd1S/HceEmYnw4WigaT6N0heyvOEeav X-Received: by 2002:a17:90a:ce02:: with SMTP id f2mr5877178pju.77.1635499125655; Fri, 29 Oct 2021 02:18:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1635499125; cv=none; d=google.com; s=arc-20160816; b=LE+uBlikBccF59o+5bH+NbnULBXKJ1zo6Cx6Bwb8tteicvl0NiF8My/M3PEauWLIZZ IWlPhULD1DZ4kZ6B/QcVxyuwrZp4wFCeP++nU+M/k2RjX7Lhx4L/YX+EqcpaTa9Etcxr SbQzhTGaFaT0lqhLvLqIAfljvxTo4EkXA9pua0s46g8dBHAWXF4qF7okshNplAzEoFiI q4GI1Qx6GD0LWlI9SxElTRsaTTTRqSU0DV2JSle51lwo9GU6cazTrP8w6vEvrza38JDw B9iloPlbPibBeLJmrSFjTjQo2SJMMBZu/7Igaf4rHH05sl0pxCLL/6SdVCNdViyVV9Rx melg== 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=xWiQPXYrUZW3dT3aY7p9hJBKIxYJaB8Q+jTIqiogp48=; b=1EUnuXEbf7wN7YHv+s6eFiQ5FFtzQYgUDn4hWth9fXdGDeTPo/DRfovbaWJDcGYC3R 1E79nl6k+wALNHev3MOzo0gchvX4n2Nq/KiY+zX38bkaVQ5BCilwCxqIRmblBgvdrd1U OYI2gOwU0SahHh8mZcx2wMTQeI4s8s/amt5I5yO8xMsFo4HI+nj/OoZ5bCMhHY5BsreM GeHAbKY9XruyX6NchQcRPYj1GACTm9d5YGtPdNgWDm4kvJh0spWBvDPRA/8L8wsmQwVe fpHpsdF5UfqqbBH7ydAHVjjsAyhnRrdnxNVu8vwROFIO4/19KqQGi/sUDP+fxIKXs7QY MDfg== 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 o16si6328115pfk.347.2021.10.29.02.18.32; Fri, 29 Oct 2021 02:18:45 -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 S231815AbhJ2JTO (ORCPT + 99 others); Fri, 29 Oct 2021 05:19:14 -0400 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]:58232 "EHLO out30-43.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231561AbhJ2JSV (ORCPT ); Fri, 29 Oct 2021 05:18:21 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R851e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04357;MF=wuzongyong@linux.alibaba.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---0Uu7wNNx_1635498896; Received: from localhost.localdomain(mailfrom:wuzongyong@linux.alibaba.com fp:SMTPD_---0Uu7wNNx_1635498896) by smtp.aliyun-inc.com(127.0.0.1); Fri, 29 Oct 2021 17:15:04 +0800 From: Wu Zongyong To: jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, mst@redhat.com, wuzongyong@linux.alibaba.com Cc: wei.yang1@linux.alibaba.com Subject: [PATCH v7 7/9] vdpa: add new attribute VDPA_ATTR_DEV_MIN_VQ_SIZE Date: Fri, 29 Oct 2021 17:14:48 +0800 Message-Id: <2bbc417355c4d22298050b1ba887cecfbde3e85d.1635493219.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 attribute advertises the min value of virtqueue size. The value is 1 by default. Signed-off-by: Wu Zongyong --- drivers/vdpa/vdpa.c | 5 +++++ include/uapi/linux/vdpa.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index d783a943647d..fcf02a364878 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -500,6 +500,7 @@ vdpa_dev_fill(struct vdpa_device *vdev, struct sk_buff *msg, u32 portid, u32 seq int flags, struct netlink_ext_ack *extack) { u16 max_vq_size; + u16 min_vq_size = 1; u32 device_id; u32 vendor_id; void *hdr; @@ -516,6 +517,8 @@ vdpa_dev_fill(struct vdpa_device *vdev, struct sk_buff *msg, u32 portid, u32 seq device_id = vdev->config->get_device_id(vdev); vendor_id = vdev->config->get_vendor_id(vdev); max_vq_size = vdev->config->get_vq_num_max(vdev); + if (vdev->config->get_vq_num_min) + min_vq_size = vdev->config->get_vq_num_min(vdev); err = -EMSGSIZE; if (nla_put_string(msg, VDPA_ATTR_DEV_NAME, dev_name(&vdev->dev))) @@ -528,6 +531,8 @@ vdpa_dev_fill(struct vdpa_device *vdev, struct sk_buff *msg, u32 portid, u32 seq goto msg_err; if (nla_put_u16(msg, VDPA_ATTR_DEV_MAX_VQ_SIZE, max_vq_size)) goto msg_err; + if (nla_put_u16(msg, VDPA_ATTR_DEV_MIN_VQ_SIZE, min_vq_size)) + goto msg_err; genlmsg_end(msg, hdr); return 0; diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h index 66a41e4ec163..e3b87879514c 100644 --- a/include/uapi/linux/vdpa.h +++ b/include/uapi/linux/vdpa.h @@ -32,6 +32,7 @@ enum vdpa_attr { VDPA_ATTR_DEV_VENDOR_ID, /* u32 */ VDPA_ATTR_DEV_MAX_VQS, /* u32 */ VDPA_ATTR_DEV_MAX_VQ_SIZE, /* u16 */ + VDPA_ATTR_DEV_MIN_VQ_SIZE, /* u16 */ /* new attributes must be added above here */ VDPA_ATTR_MAX, -- 2.31.1