6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Heng Qi <hengqi@xxxxxxxxxxxxxxxxx>
[ Upstream commit bfb2b3609162135625bf96acf5118051cd0d082e ]
When the user sets a non-zero coalescing parameter to 0 for a specific
virtqueue, it does not work as expected, so let's fix this.
Fixes: 394bd87764b6 ("virtio_net: support per queue interrupt coalesce command")
Reported-by: Xiaoming Zhao <zxm377917@xxxxxxxxxxxxxxx>
Cc: Gavin Li <gavinl@xxxxxxxxxx>
Signed-off-by: Heng Qi <hengqi@xxxxxxxxxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/virtio_net.c | 36 ++++++++++++++++--------------------
1 file changed, 16 insertions(+), 20 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index d3b976a591c84..4211f28c59dc8 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -3296,27 +3296,23 @@ 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);
- 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;
- }
+ err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(queue),
+ ec->rx_coalesce_usecs,
+ ec->rx_max_coalesced_frames);
+ if (err)
+ return err;
- 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);
- 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;
- }
+ 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);
+ 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;
}
--
2.42.0
