[PATCH v3 4/6] virtio-net: fix per queue coalescing parameter setting
From: Heng Qi <hidden>
Date: 2023-10-08 06:27:55
Subsystem:
networking drivers, the rest, virtio net driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, "Michael S. Tsirkin", Jason Wang
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 <redacted>
Cc: Gavin Li <redacted>
Signed-off-by: Heng Qi <redacted>
Acked-by: Jason Wang <jasowang@redhat.com>
---
v2->v3:
1. Add the ack tag.
v1->v2:
1. Remove useless comments.
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 6120dd5343dd..12ec3ae19b60 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; }
--
2.19.1.6.gb485710b