From patchwork Mon Apr 15 09:36:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heng Qi X-Patchwork-Id: 13629698 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-133.freemail.mail.aliyun.com (out30-133.freemail.mail.aliyun.com [115.124.30.133]) (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 BAC0E3FBA5 for ; Mon, 15 Apr 2024 09:36:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713173809; cv=none; b=F0eKh/sesMQt9vSx7YfzFXVFdNz8mT6bjlG40E+WgIrB9POFKbu8RoknX23lJ01ds5p72s9sExoIFP4ej0F1+UkzZZ9UDlSSshavjAjaNnTRBQv3MlLXy8ryVSJAfZZZFGrn0vVaursHJ1d5eM7xHLV3zcBFWmzUZcTrp3OiF3E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713173809; c=relaxed/simple; bh=DRV6wXNRM1lNrVgDsF8iq2gUUMKQHbCiR9s5YRFKb5I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Dssxr4k21ks/DbVrqCe139UZsxxkXsG1v9pAwmdH5swdAFBnl9+cS0hJC+PEx32SEtyaRQXdjIhlrBN3tXk6u62d1Eif8tySga80jB4K+muOaKuZHqJQdT7qtWT3zc+fne9HD6FOew3KRR+UidClisW3xEVPpMvnBLmcZdBEAg4= 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=xUsnffDB; arc=none smtp.client-ip=115.124.30.133 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="xUsnffDB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1713173803; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=lUJhBDWdgCHqmNJ+6H8gmi8bjqVhnK1FxycIphyKCaQ=; b=xUsnffDBSSSxUqeDVtdvLDtVJMit5r1OVOqK4RdI3XqftcJJRe0DHJAYuzxKcSRk7vv0yoS3KfJpp+hSVVSgI7TF8Guk7cZDQ2GG8Fy/sDU+Ks8o6Wb3tEPfrN41oOHryWloyMAiAC12YvBiYprZKx2ZfPFJxty0D0mmNgObIvc= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R211e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045176;MF=hengqi@linux.alibaba.com;NM=1;PH=DS;RN=12;SR=0;TI=SMTPD_---0W4aM2wU_1713173802; Received: from localhost(mailfrom:hengqi@linux.alibaba.com fp:SMTPD_---0W4aM2wU_1713173802) by smtp.aliyun-inc.com; Mon, 15 Apr 2024 17:36:43 +0800 From: Heng Qi To: netdev@vger.kernel.org, virtualization@lists.linux.dev Cc: Jakub Kicinski , "David S . Miller" , Eric Dumazet , Paolo Abeni , Jason Wang , "Michael S . Tsirkin" , Brett Creeley , Ratheesh Kannoth , Alexander Lobakin , Xuan Zhuo Subject: [PATCH net-next v7 3/4] virtio-net: refactor dim initialization/destruction Date: Mon, 15 Apr 2024 17:36:37 +0800 Message-Id: <20240415093638.123962-4-hengqi@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240415093638.123962-1-hengqi@linux.alibaba.com> References: <20240415093638.123962-1-hengqi@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 | 38 +++++++++++++++++++++++++++----------- 1 file changed, 27 insertions(+), 11 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index c22d1118a133..e8fbee204bf0 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2274,6 +2274,13 @@ 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); @@ -2297,11 +2304,9 @@ 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; } @@ -2466,7 +2471,7 @@ 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); @@ -2716,10 +2721,9 @@ 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; } @@ -4418,6 +4422,19 @@ 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; @@ -4445,9 +4462,6 @@ 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)); @@ -4855,6 +4869,8 @@ static int virtnet_probe(struct virtio_device *vdev) virtio_device_ready(vdev); + virtnet_dim_init(vi); + _virtnet_set_queues(vi, vi->curr_queue_pairs); /* a random MAC address has been assigned, notify the device.