Jason Wang
2023-Sep-22 04:27 UTC
[PATCH net 4/6] virtio-net: fix per queue coalescing parameter setting
On Tue, Sep 19, 2023 at 3:49?PM Heng Qi <hengqi at linux.alibaba.com> wrote:> > 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 at alibaba-inc.com> > Cc: Gavin Li <gavinl at nvidia.com> > Signed-off-by: Heng Qi <hengqi at linux.alibaba.com> > --- > 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 ce60162d380a..f9a7f6afd099 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; > + /* Save parameters */I think code explains itself, so we can remove this. Others look good. Thanks> + 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); > - 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; > - } > + 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; > > return 0; > } > -- > 2.19.1.6.gb485710b >