netdev - [PATCH net-next 5/8] virtio-net: extract virtqueue coalescig cmd for reuse

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Date: Fri, 11 Aug 2023 14:55:09 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: "Michael S . Tsirkin" <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	netdev@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Cc: "David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Jesper Dangaard Brouer <hawk@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: [PATCH net-next 5/8] virtio-net: extract virtqueue coalescig cmd for reuse

Extract commands to set virtqueue coalescing parameters for reuse
by ethtool -Q and netdim.

Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>
---
 drivers/net/virtio_net.c | 54 +++++++++++++++++++++++++++++++---------
 1 file changed, 42 insertions(+), 12 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 9d97b20f5da7..0318113bd8c2 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -3235,6 +3235,42 @@ static int virtnet_send_ctrl_coal_vq_cmd(struct virtnet_info *vi,
 	return 0;
 }
 
+static int virtnet_send_tx_notf_coal_vq_cmd(struct virtnet_info *vi,
+					    u16 queue, u32 max_usecs,
+					    u32 max_packets)
+{
+	int err;
+
+	err = virtnet_send_ctrl_coal_vq_cmd(vi, txq2vq(queue),
+					    max_usecs, max_packets);
+	if (err)
+		return err;
+
+	/* Save parameters */
+	vi->sq[queue].intr_coal.max_usecs = max_usecs;
+	vi->sq[queue].intr_coal.max_packets = max_packets;
+
+	return 0;
+}
+
+static int virtnet_send_rx_notf_coal_vq_cmd(struct virtnet_info *vi,
+					    u16 queue, u32 max_usecs,
+					    u32 max_packets)
+{
+	int err;
+
+	err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(queue),
+					    max_usecs, max_packets);
+	if (err)
+		return err;
+
+	/* Save parameters */
+	vi->rq[queue].intr_coal.max_usecs = max_usecs;
+	vi->rq[queue].intr_coal.max_packets = max_packets;
+
+	return 0;
+}
+
 static int virtnet_send_notf_coal_vq_cmds(struct virtnet_info *vi,
 					  struct ethtool_coalesce *ec,
 					  u16 queue)
@@ -3242,25 +3278,19 @@ static int virtnet_send_notf_coal_vq_cmds(struct virtnet_info *vi,
 	int err;
 
 	if (ec->rx_coalesce_usecs || ec->rx_max_coalesced_frames) {
-		err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(queue),
-						    ec->rx_coalesce_usecs,
-						    ec->rx_max_coalesced_frames);
+		err = virtnet_send_rx_notf_coal_vq_cmd(vi, queue,
+						       ec->rx_coalesce_usecs,
+						       ec->rx_max_coalesced_frames);
 		if (err)
 			return err;
-		/* Save parameters */
-		vi->rq[queue].intr_coal.max_usecs = ec->rx_coalesce_usecs;
-		vi->rq[queue].intr_coal.max_packets = ec->rx_max_coalesced_frames;
 	}
 
 	if (ec->tx_coalesce_usecs || ec->tx_max_coalesced_frames) {
-		err = virtnet_send_ctrl_coal_vq_cmd(vi, txq2vq(queue),
-						    ec->tx_coalesce_usecs,
-						    ec->tx_max_coalesced_frames);
+		err = virtnet_send_tx_notf_coal_vq_cmd(vi, queue,
+						       ec->tx_coalesce_usecs,
+						       ec->tx_max_coalesced_frames);
 		if (err)
 			return err;
-		/* Save parameters */
-		vi->sq[queue].intr_coal.max_usecs = ec->tx_coalesce_usecs;
-		vi->sq[queue].intr_coal.max_packets = ec->tx_max_coalesced_frames;
 	}
 
 	return 0;
-- 
2.19.1.6.gb485710b