From patchwork Mon Apr 8 03:44:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heng Qi X-Patchwork-Id: 13620533 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-111.freemail.mail.aliyun.com (out30-111.freemail.mail.aliyun.com [115.124.30.111]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A7DB1877 for ; Mon, 8 Apr 2024 03:44:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.111 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712547879; cv=none; b=VdoNuEjahdZJY+rc1m3RxhenhWFABF94aOMYLEFBvvQkVagoy50FhWjeOQ9RlwmrqxfUwSoiUN6PJSDF5cajxDzYMXBINqvTzF5vsP0IXPatGQo1s4DEIDelnIFIm8l8b+UXHMywRW3Gx/LW2N51/q4bM5zOmbSzgs/6NKoDrAU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712547879; c=relaxed/simple; bh=oThzB2CTVde5yyaQ3HzZo2vd5oziz6wBghWVemQ4MW0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=qgdpbEybmvKIzLu0qSLsqi9SUQaGzjt6j983iZQzmCP84yHFI1Ix7pRn8qKdgrZmMfJZV+FfZX71mE25oSag/i5Qd4Ma9pmkXSA7cEIfp9mhL9kXipILhJecqpJeRL9/drzGL+tEB2HLkXWWxBpiX5d1N2JTah4Ao6J7em0wyV8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=osVqlXxk; arc=none smtp.client-ip=115.124.30.111 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="osVqlXxk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1712547874; h=From:To:Subject:Date:Message-Id; bh=R/hJANnBNUS/FQN5cE9C7fcicpexRUXU01lKJTGYZv4=; b=osVqlXxkAk4NSB/un1j8xfMw3TqmIFpsVKaBZNTsfqeqCpdlbwcsPAGumehbMtfKSlNoQIEZ+Dh9q94sXBK5BB7iQJy7Zs773w4KypfhUomUyk3/MYbmqLylWtxVMqUX/FZa4cBxk4KOBf/8uFJ+acnWrh3EvWrVEAwyIYfn/Kk= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R161e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=hengqi@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0W4249Z2_1712547873; Received: from localhost(mailfrom:hengqi@linux.alibaba.com fp:SMTPD_---0W4249Z2_1712547873) by smtp.aliyun-inc.com; Mon, 08 Apr 2024 11:44:34 +0800 From: Heng Qi To: netdev@vger.kernel.org, virtualization@lists.linux.dev Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jason Wang , "Michael S. Tsirkin" , Ratheesh Kannoth , Alexander Lobakin , Xuan Zhuo Subject: [PATCH net-next v4 3/4] virtio-net: refactor dim initialization/destruction Date: Mon, 8 Apr 2024 11:44:29 +0800 Message-Id: <1712547870-112976-4-git-send-email-hengqi@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1712547870-112976-1-git-send-email-hengqi@linux.alibaba.com> References: <1712547870-112976-1-git-send-email-hengqi@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: X-Patchwork-Delegate: kuba@kernel.org Extract the initialization and destruction actions of dim for use in the next patch. Signed-off-by: Heng Qi --- drivers/net/virtio_net.c | 37 ++++++++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 11 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index e709d44..cc3a281 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2278,6 +2278,13 @@ static int virtnet_enable_queue_pair(struct virtnet_info *vi, int qp_index) return err; } +static void virtnet_dim_clean(struct virtnet_info *vi, + int start_qnum, int end_qnum) +{ + for (; start_qnum <= end_qnum; start_qnum++) + cancel_work_sync(&vi->rq[start_qnum].dim.work); +} + static int virtnet_open(struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); @@ -2301,11 +2308,9 @@ static int virtnet_open(struct net_device *dev) err_enable_qp: disable_delayed_refill(vi); cancel_delayed_work_sync(&vi->refill); - - for (i--; i >= 0; i--) { + virtnet_dim_clean(vi, 0, i - 1); + for (i--; i >= 0; i--) virtnet_disable_queue_pair(vi, i); - cancel_work_sync(&vi->rq[i].dim.work); - } return err; } @@ -2470,7 +2475,7 @@ static int virtnet_rx_resize(struct virtnet_info *vi, if (running) { napi_disable(&rq->napi); - cancel_work_sync(&rq->dim.work); + virtnet_dim_clean(vi, qindex, qindex); } err = virtqueue_resize(rq->vq, ring_num, virtnet_rq_unmap_free_buf); @@ -2720,10 +2725,9 @@ static int virtnet_close(struct net_device *dev) /* Make sure refill_work doesn't re-enable napi! */ cancel_delayed_work_sync(&vi->refill); - for (i = 0; i < vi->max_queue_pairs; i++) { + virtnet_dim_clean(vi, 0, vi->max_queue_pairs - 1); + for (i = 0; i < vi->max_queue_pairs; i++) virtnet_disable_queue_pair(vi, i); - cancel_work_sync(&vi->rq[i].dim.work); - } return 0; } @@ -4422,6 +4426,19 @@ static int virtnet_find_vqs(struct virtnet_info *vi) return ret; } +static void virtnet_dim_init(struct virtnet_info *vi) +{ + int i; + + if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_VQ_NOTF_COAL)) + return; + + for (i = 0; i < vi->max_queue_pairs; i++) { + INIT_WORK(&vi->rq[i].dim.work, virtnet_rx_dim_work); + vi->rq[i].dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; + } +} + static int virtnet_alloc_queues(struct virtnet_info *vi) { int i; @@ -4441,6 +4458,7 @@ static int virtnet_alloc_queues(struct virtnet_info *vi) goto err_rq; INIT_DELAYED_WORK(&vi->refill, refill_work); + virtnet_dim_init(vi); for (i = 0; i < vi->max_queue_pairs; i++) { vi->rq[i].pages = NULL; netif_napi_add_weight(vi->dev, &vi->rq[i].napi, virtnet_poll, @@ -4449,9 +4467,6 @@ static int virtnet_alloc_queues(struct virtnet_info *vi) virtnet_poll_tx, napi_tx ? napi_weight : 0); - INIT_WORK(&vi->rq[i].dim.work, virtnet_rx_dim_work); - vi->rq[i].dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; - sg_init_table(vi->rq[i].sg, ARRAY_SIZE(vi->rq[i].sg)); ewma_pkt_len_init(&vi->rq[i].mrg_avg_pkt_len); sg_init_table(vi->sq[i].sg, ARRAY_SIZE(vi->sq[i].sg));