From patchwork Wed Apr 6 03:43:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12803285 X-Patchwork-Delegate: kuba@kernel.org 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 92402C433FE for ; Wed, 6 Apr 2022 12:16:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232745AbiDFMSj (ORCPT ); Wed, 6 Apr 2022 08:18:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232990AbiDFMSB (ORCPT ); Wed, 6 Apr 2022 08:18:01 -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 A3FFC201B9; Tue, 5 Apr 2022 20:44:23 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R941e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04423;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=34;SR=0;TI=SMTPD_---0V9Jmrek_1649216657; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V9Jmrek_1649216657) by smtp.aliyun-inc.com(127.0.0.1); Wed, 06 Apr 2022 11:44:18 +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 14/32] virtio_ring: packed: extract the logic of attach vring Date: Wed, 6 Apr 2022 11:43:28 +0800 Message-Id: <20220406034346.74409-15-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, the subsequent patch will call it separately. Signed-off-by: Xuan Zhuo --- drivers/virtio/virtio_ring.c | 47 +++++++++++++++++++++++++----------- 1 file changed, 33 insertions(+), 14 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 5b5976c5742e..80d446fa8d16 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -1904,6 +1904,35 @@ static int vring_alloc_state_extra_packed(u32 num, return -ENOMEM; } +static void vring_virtqueue_attach_packed(struct vring_virtqueue *vq, + u32 num, + struct vring_packed_desc *ring, + struct vring_packed_desc_event *driver, + struct vring_packed_desc_event *device, + dma_addr_t ring_dma_addr, + dma_addr_t driver_event_dma_addr, + dma_addr_t device_event_dma_addr, + size_t ring_size_in_bytes, + size_t event_size_in_bytes, + struct vring_desc_state_packed *state, + struct vring_desc_extra *extra) +{ + vq->packed.ring_dma_addr = ring_dma_addr; + vq->packed.driver_event_dma_addr = driver_event_dma_addr; + vq->packed.device_event_dma_addr = device_event_dma_addr; + + vq->packed.ring_size_in_bytes = ring_size_in_bytes; + vq->packed.event_size_in_bytes = event_size_in_bytes; + + vq->packed.vring.num = num; + vq->packed.vring.desc = ring; + vq->packed.vring.driver = driver; + vq->packed.vring.device = device; + + vq->packed.desc_state = state; + vq->packed.desc_extra = extra; +} + static struct virtqueue *vring_create_virtqueue_packed( unsigned int index, unsigned int num, @@ -1962,18 +1991,6 @@ static struct virtqueue *vring_create_virtqueue_packed( if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM)) vq->weak_barriers = false; - vq->packed.ring_dma_addr = ring_dma_addr; - vq->packed.driver_event_dma_addr = driver_event_dma_addr; - vq->packed.device_event_dma_addr = device_event_dma_addr; - - vq->packed.ring_size_in_bytes = ring_size_in_bytes; - vq->packed.event_size_in_bytes = event_size_in_bytes; - - vq->packed.vring.num = num; - vq->packed.vring.desc = ring; - vq->packed.vring.driver = driver; - vq->packed.vring.device = device; - vq->packed.next_avail_idx = 0; vq->packed.avail_wrap_counter = 1; vq->packed.used_wrap_counter = 1; @@ -1984,8 +2001,10 @@ static struct virtqueue *vring_create_virtqueue_packed( if (err) goto err_state_extra; - vq->packed.desc_state = state; - vq->packed.desc_extra = extra; + vring_virtqueue_attach_packed(vq, num, ring, driver, device, + ring_dma_addr, driver_event_dma_addr, + device_event_dma_addr, ring_size_in_bytes, + event_size_in_bytes, state, extra); /* Put everything in free lists. */ vq->free_head = 0;