From patchwork Mon Jul 8 11:25:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13726428 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-99.freemail.mail.aliyun.com (out30-99.freemail.mail.aliyun.com [115.124.30.99]) (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 DD4207BAE7; Mon, 8 Jul 2024 11:25:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.99 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720437947; cv=none; b=NUfELd+tJ382GeUQ6iHUYzhhkRDPX88QTcFAb++A9fAd4iTkqAVzqAy/dDUbGY/siZyGCNOmBFQwXyPLmOsxv8T60ZW5/5Wv5rOssbPQDvTP9cXwfAsKYsSKex/Q+b3jj7fVMOyoYTAxtiuzwRbmnevch8p2aqXThySpWfHWWJQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720437947; c=relaxed/simple; bh=N3BuQzEZ3xADxJCxh31dFbFp4xi723iW5Mhupk7GrXk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=nr4jl2sQYIJFDTcN+zraNmE94p8DQWWNU+Jv51rd9IsKd3Aia6u92I3stHfz2hnuxRZ7unS5knYxn0a368FWswt7l2AvUNzqiWEXfspksXPx7h592dJMS+K4kr8PBsRDH3fOmtVTv4OGtHDf7aeMNRPHP+iwbZ137wyoDtj6tw4= 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=R0sSb76Q; arc=none smtp.client-ip=115.124.30.99 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="R0sSb76Q" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1720437942; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=ixQcmDs1008Adtr8nnLB1TsPVvNLEyo3g5zAUujjY4M=; b=R0sSb76Q8jc4MnAK2MV3X7YNd9MO27L+yVL08/p+4XsTAGS4yisPAap8r28YF1dmqD1evDu1JzVem3MD6XnF0fuKrV9h/hHAAWtX0ezuy3O2G0xeOEcw1M7S2ox9rNQBG5Q04XJJSA8vTrv09NJhfNb3B3AoC5O6ZdONbq/7op8= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R191e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033023225041;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0WA4mZeI_1720437941; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0WA4mZeI_1720437941) by smtp.aliyun-inc.com; Mon, 08 Jul 2024 19:25:41 +0800 From: Xuan Zhuo To: netdev@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , virtualization@lists.linux.dev, bpf@vger.kernel.org Subject: [PATCH net-next v8 03/10] virtio_net: separate virtnet_tx_resize() Date: Mon, 8 Jul 2024 19:25:30 +0800 Message-Id: <20240708112537.96291-4-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240708112537.96291-1-xuanzhuo@linux.alibaba.com> References: <20240708112537.96291-1-xuanzhuo@linux.alibaba.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Git-Hash: 74fbc055cff2 X-Patchwork-Delegate: kuba@kernel.org This patch separates two sub-functions from virtnet_tx_resize(): * virtnet_tx_pause * virtnet_tx_resume Then the subsequent virtnet_tx_reset() can share these two functions. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang --- drivers/net/virtio_net.c | 35 +++++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index df5b23374c53..7d762614113b 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2703,12 +2703,11 @@ static int virtnet_rx_resize(struct virtnet_info *vi, return err; } -static int virtnet_tx_resize(struct virtnet_info *vi, - struct send_queue *sq, u32 ring_num) +static void virtnet_tx_pause(struct virtnet_info *vi, struct send_queue *sq) { bool running = netif_running(vi->dev); struct netdev_queue *txq; - int err, qindex; + int qindex; qindex = sq - vi->sq; @@ -2729,10 +2728,17 @@ static int virtnet_tx_resize(struct virtnet_info *vi, netif_stop_subqueue(vi->dev, qindex); __netif_tx_unlock_bh(txq); +} - err = virtqueue_resize(sq->vq, ring_num, virtnet_sq_free_unused_buf); - if (err) - netdev_err(vi->dev, "resize tx fail: tx queue index: %d err: %d\n", qindex, err); +static void virtnet_tx_resume(struct virtnet_info *vi, struct send_queue *sq) +{ + bool running = netif_running(vi->dev); + struct netdev_queue *txq; + int qindex; + + qindex = sq - vi->sq; + + txq = netdev_get_tx_queue(vi->dev, qindex); __netif_tx_lock_bh(txq); sq->reset = false; @@ -2741,6 +2747,23 @@ static int virtnet_tx_resize(struct virtnet_info *vi, if (running) virtnet_napi_tx_enable(vi, sq->vq, &sq->napi); +} + +static int virtnet_tx_resize(struct virtnet_info *vi, struct send_queue *sq, + u32 ring_num) +{ + int qindex, err; + + qindex = sq - vi->sq; + + virtnet_tx_pause(vi, sq); + + err = virtqueue_resize(sq->vq, ring_num, virtnet_sq_free_unused_buf); + if (err) + netdev_err(vi->dev, "resize tx fail: tx queue index: %d err: %d\n", qindex, err); + + virtnet_tx_resume(vi, sq); + return err; }