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Date: Thu, 7 Dec 2023 14:29:19 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: netdev@...r.kernel.org,
virtualization@...ts.linux-foundation.org
Cc: jasowang@...hat.com,
mst@...hat.com,
pabeni@...hat.com,
kuba@...nel.org,
yinjun.zhang@...igine.com,
edumazet@...gle.com,
davem@...emloft.net,
hawk@...nel.org,
john.fastabend@...il.com,
ast@...nel.org,
horms@...nel.org,
xuanzhuo@...ux.alibaba.com
Subject: [PATCH net-next v7 3/4] virtio-net: extract virtqueue coalescig cmd for reuse
Extract commands to set virtqueue coalescing parameters for reuse
by ethtool -Q, vq resize and netdim.
Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>
Acked-by: Jason Wang <jasowang@...hat.com>
---
drivers/net/virtio_net.c | 106 +++++++++++++++++++++++----------------
1 file changed, 64 insertions(+), 42 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 0285301caf78..69fe09e99b3c 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2849,6 +2849,58 @@ static void virtnet_cpu_notif_remove(struct virtnet_info *vi)
&vi->node_dead);
}
+static int virtnet_send_ctrl_coal_vq_cmd(struct virtnet_info *vi,
+ u16 vqn, u32 max_usecs, u32 max_packets)
+{
+ struct scatterlist sgs;
+
+ vi->ctrl->coal_vq.vqn = cpu_to_le16(vqn);
+ vi->ctrl->coal_vq.coal.max_usecs = cpu_to_le32(max_usecs);
+ vi->ctrl->coal_vq.coal.max_packets = cpu_to_le32(max_packets);
+ sg_init_one(&sgs, &vi->ctrl->coal_vq, sizeof(vi->ctrl->coal_vq));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_NOTF_COAL,
+ VIRTIO_NET_CTRL_NOTF_COAL_VQ_SET,
+ &sgs))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int virtnet_send_rx_ctrl_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;
+
+ vi->rq[queue].intr_coal.max_usecs = max_usecs;
+ vi->rq[queue].intr_coal.max_packets = max_packets;
+
+ return 0;
+}
+
+static int virtnet_send_tx_ctrl_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;
+
+ vi->sq[queue].intr_coal.max_usecs = max_usecs;
+ vi->sq[queue].intr_coal.max_packets = max_packets;
+
+ return 0;
+}
+
static void virtnet_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *ring,
struct kernel_ethtool_ringparam *kernel_ring,
@@ -2906,14 +2958,11 @@ static int virtnet_set_ringparam(struct net_device *dev,
* through the VIRTIO_NET_CTRL_NOTF_COAL_TX_SET command, or, if the driver
* did not set any TX coalescing parameters, to 0.
*/
- err = virtnet_send_ctrl_coal_vq_cmd(vi, txq2vq(i),
- vi->intr_coal_tx.max_usecs,
- vi->intr_coal_tx.max_packets);
+ err = virtnet_send_tx_ctrl_coal_vq_cmd(vi, i,
+ vi->intr_coal_tx.max_usecs,
+ vi->intr_coal_tx.max_packets);
if (err)
return err;
-
- vi->sq[i].intr_coal.max_usecs = vi->intr_coal_tx.max_usecs;
- vi->sq[i].intr_coal.max_packets = vi->intr_coal_tx.max_packets;
}
if (ring->rx_pending != rx_pending) {
@@ -2922,14 +2971,11 @@ static int virtnet_set_ringparam(struct net_device *dev,
return err;
/* The reason is same as the transmit virtqueue reset */
- err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(i),
- vi->intr_coal_rx.max_usecs,
- vi->intr_coal_rx.max_packets);
+ err = virtnet_send_rx_ctrl_coal_vq_cmd(vi, i,
+ vi->intr_coal_rx.max_usecs,
+ vi->intr_coal_rx.max_packets);
if (err)
return err;
-
- vi->rq[i].intr_coal.max_usecs = vi->intr_coal_rx.max_usecs;
- vi->rq[i].intr_coal.max_packets = vi->intr_coal_rx.max_packets;
}
}
@@ -3334,48 +3380,24 @@ static int virtnet_send_notf_coal_cmds(struct virtnet_info *vi,
return 0;
}
-static int virtnet_send_ctrl_coal_vq_cmd(struct virtnet_info *vi,
- u16 vqn, u32 max_usecs, u32 max_packets)
-{
- struct scatterlist sgs;
-
- vi->ctrl->coal_vq.vqn = cpu_to_le16(vqn);
- vi->ctrl->coal_vq.coal.max_usecs = cpu_to_le32(max_usecs);
- vi->ctrl->coal_vq.coal.max_packets = cpu_to_le32(max_packets);
- sg_init_one(&sgs, &vi->ctrl->coal_vq, sizeof(vi->ctrl->coal_vq));
-
- if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_NOTF_COAL,
- VIRTIO_NET_CTRL_NOTF_COAL_VQ_SET,
- &sgs))
- return -EINVAL;
-
- return 0;
-}
-
static int virtnet_send_notf_coal_vq_cmds(struct virtnet_info *vi,
struct ethtool_coalesce *ec,
u16 queue)
{
int err;
- err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(queue),
- ec->rx_coalesce_usecs,
- ec->rx_max_coalesced_frames);
+ err = virtnet_send_rx_ctrl_coal_vq_cmd(vi, queue,
+ ec->rx_coalesce_usecs,
+ ec->rx_max_coalesced_frames);
if (err)
return err;
- vi->rq[queue].intr_coal.max_usecs = ec->rx_coalesce_usecs;
- vi->rq[queue].intr_coal.max_packets = ec->rx_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_ctrl_coal_vq_cmd(vi, queue,
+ ec->tx_coalesce_usecs,
+ ec->tx_max_coalesced_frames);
if (err)
return err;
- 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
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