From patchwork Wed May 8 08:05:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13658224 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-100.freemail.mail.aliyun.com (out30-100.freemail.mail.aliyun.com [115.124.30.100]) (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 BC67C47F59; Wed, 8 May 2024 08:05:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.100 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715155529; cv=none; b=MBIshwvhBpGv5sOU0qouzkr2ymvxYmwC2Pe2PpAeeAA7kTGt162LGd5cG3GQIkeAT4d/1RyrHo+eTooT3OTBvBZR2RkSuBcCJ6U5n222NGa2lRi9gPDDK+XsZd1OtmRC924REayF678fxIGLX1xLkcXloIFAY6WWHpcDM++EutQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715155529; c=relaxed/simple; bh=f7o/GSnEc1rMdwsBI1zZaYKc+u09RgYghw3Ml2vMb4g=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=MpD+O5be8U4gQQO/e2F3IKxI4GCFqdx5H8s11VRxP5igbddyGDUBrEnL4d0mfXF4IIGpeWPfWfk9qcYIyNHybEz2sJ82I0K7YIgvaf7aaJr0a0c5oYEil7YDVf4PCAaln+CY0T+hPzy6r0yjCFWLEoa1dFMT6eimY1GEtUrHeiA= 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=UViKh1dF; arc=none smtp.client-ip=115.124.30.100 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="UViKh1dF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1715155525; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=YOZTgu1fcteXC0FJFOjnIzLShqMFxNTQZPZRHWLq6CQ=; b=UViKh1dFleel9KdE1CNT9HeqZumZrrnB4cAS8kS7Xc14IIkGHbo584KalqQ/I4cNu3tyK9Je6IovcmrcXVOIoMmusYv3/saga5RXyA5SPoJu9mXtAOecFYSE2UDdw4zaJyY9F3zLHYp1p6Doz++wDDpm300rKME4kH0XefuQqvU= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R831e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033045046011;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0W62qcO9_1715155522; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0W62qcO9_1715155522) by smtp.aliyun-inc.com; Wed, 08 May 2024 16:05:23 +0800 From: Xuan Zhuo To: netdev@vger.kernel.org Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , virtualization@lists.linux.dev, bpf@vger.kernel.org Subject: [PATCH net-next 5/7] virtio_net: separate virtnet_tx_resize() Date: Wed, 8 May 2024 16:05:12 +0800 Message-Id: <20240508080514.99458-6-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240508080514.99458-1-xuanzhuo@linux.alibaba.com> References: <20240508080514.99458-1-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: 7cdcbabd0b89 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/virtnet.h | 2 ++ drivers/net/virtio/virtnet_main.c | 35 +++++++++++++++++++++++++------ 2 files changed, 31 insertions(+), 6 deletions(-) diff --git a/drivers/net/virtio/virtnet.h b/drivers/net/virtio/virtnet.h index f95a75751a9b..9dce5df88fe1 100644 --- a/drivers/net/virtio/virtnet.h +++ b/drivers/net/virtio/virtnet.h @@ -237,4 +237,6 @@ struct virtnet_info { void virtnet_rx_pause(struct virtnet_info *vi, struct virtnet_rq *rq); void virtnet_rx_resume(struct virtnet_info *vi, struct virtnet_rq *rq); +void virtnet_tx_pause(struct virtnet_info *vi, struct virtnet_sq *sq); +void virtnet_tx_resume(struct virtnet_info *vi, struct virtnet_sq *sq); #endif diff --git a/drivers/net/virtio/virtnet_main.c b/drivers/net/virtio/virtnet_main.c index aa382fbc52d6..1701640980ba 100644 --- a/drivers/net/virtio/virtnet_main.c +++ b/drivers/net/virtio/virtnet_main.c @@ -2396,12 +2396,11 @@ static int virtnet_rx_resize(struct virtnet_info *vi, return err; } -static int virtnet_tx_resize(struct virtnet_info *vi, - struct virtnet_sq *sq, u32 ring_num) +void virtnet_tx_pause(struct virtnet_info *vi, struct virtnet_sq *sq) { bool running = netif_running(vi->dev); struct netdev_queue *txq; - int err, qindex; + int qindex; qindex = sq - vi->sq; @@ -2422,10 +2421,17 @@ 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); +void virtnet_tx_resume(struct virtnet_info *vi, struct virtnet_sq *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; @@ -2434,6 +2440,23 @@ 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 virtnet_sq *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; }