From patchwork Wed Apr 6 03:43:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12803730 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51B7DC433EF for ; Wed, 6 Apr 2022 16:11:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237203AbiDFQN3 (ORCPT ); Wed, 6 Apr 2022 12:13:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237680AbiDFQMg (ORCPT ); Wed, 6 Apr 2022 12:12:36 -0400 Received: from out30-54.freemail.mail.aliyun.com (out30-54.freemail.mail.aliyun.com [115.124.30.54]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39D9424BD73; Tue, 5 Apr 2022 20:44:10 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=34;SR=0;TI=SMTPD_---0V9JmrcR_1649216644; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V9JmrcR_1649216644) by smtp.aliyun-inc.com(127.0.0.1); Wed, 06 Apr 2022 11:44:05 +0800 From: Xuan Zhuo To: virtualization@lists.linux-foundation.org Cc: Jeff Dike , Richard Weinberger , Anton Ivanov , "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Hans de Goede , Mark Gross , Vadim Pasternak , Bjorn Andersson , Mathieu Poirier , Cornelia Huck , Halil Pasic , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Alexander Gordeev , Sven Schnelle , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Johannes Berg , Xuan Zhuo , Vincent Whitchurch , linux-um@lists.infradead.org, netdev@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH v9 08/32] virtio_ring: split: extract the logic of attach vring Date: Wed, 6 Apr 2022 11:43:22 +0800 Message-Id: <20220406034346.74409-9-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220406034346.74409-1-xuanzhuo@linux.alibaba.com> References: <20220406034346.74409-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 X-Git-Hash: 881cb3483d12 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Separate the logic of attach vring, subsequent patches will call it separately. Signed-off-by: Xuan Zhuo --- drivers/virtio/virtio_ring.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 6de67439cb57..083f2992ba0d 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -916,6 +916,19 @@ static void *virtqueue_detach_unused_buf_split(struct virtqueue *_vq) return NULL; } +static void vring_virtqueue_attach_split(struct vring_virtqueue *vq, + struct vring vring, + struct vring_desc_state_split *desc_state, + struct vring_desc_extra *desc_extra) +{ + vq->split.vring = vring; + vq->split.queue_dma_addr = 0; + vq->split.queue_size_in_bytes = 0; + + vq->split.desc_state = desc_state; + vq->split.desc_extra = desc_extra; +} + static int vring_alloc_state_extra_split(u32 num, struct vring_desc_state_split **desc_state, struct vring_desc_extra **desc_extra) @@ -2262,10 +2275,6 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index, if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM)) vq->weak_barriers = false; - vq->split.queue_dma_addr = 0; - vq->split.queue_size_in_bytes = 0; - - vq->split.vring = vring; vq->split.avail_flags_shadow = 0; vq->split.avail_idx_shadow = 0; @@ -2283,8 +2292,7 @@ struct virtqueue *__vring_new_virtqueue(unsigned int index, return NULL; } - vq->split.desc_state = state; - vq->split.desc_extra = extra; + vring_virtqueue_attach_split(vq, vring, state, extra); /* Put everything in free lists. */ vq->free_head = 0;