The rtnl lock is no longer needed to protect the control buffer and command VQ. Signed-off-by: Daniel Jurgens <danielj@xxxxxxxxxx> Reviewed-by: Jiri Pirko <jiri@xxxxxxxxxx> --- drivers/net/virtio_net.c | 27 +++++---------------------- 1 file changed, 5 insertions(+), 22 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 859d767411f8..351d9107f472 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2658,14 +2658,12 @@ static void virtnet_stats(struct net_device *dev, static void virtnet_ack_link_announce(struct virtnet_info *vi) { - rtnl_lock(); if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_ANNOUNCE, VIRTIO_NET_CTRL_ANNOUNCE_ACK, NULL)) dev_warn(&vi->dev->dev, "Failed to ack link announce.\n"); - rtnl_unlock(); } -static int _virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs) +static int virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs) { struct virtio_net_ctrl_mq *mq __free(kfree) = NULL; struct scatterlist sg; @@ -2696,16 +2694,6 @@ static int _virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs) return 0; } -static int virtnet_set_queues(struct virtnet_info *vi, u16 queue_pairs) -{ - int err; - - rtnl_lock(); - err = _virtnet_set_queues(vi, queue_pairs); - rtnl_unlock(); - return err; -} - static int virtnet_close(struct net_device *dev) { u8 *promisc_allmulti __free(kfree) = NULL; @@ -3311,7 +3299,7 @@ static int virtnet_set_channels(struct net_device *dev, return -EINVAL; cpus_read_lock(); - err = _virtnet_set_queues(vi, queue_pairs); + err = virtnet_set_queues(vi, queue_pairs); if (err) { cpus_read_unlock(); goto err; @@ -3604,13 +3592,10 @@ static void virtnet_rx_dim_work(struct work_struct *work) struct dim_cq_moder update_moder; int qnum, err; - if (!rtnl_trylock()) - return; - qnum = rq - vi->rq; if (!rq->dim_enabled) - goto out; + return; guard(spinlock)(&rq->intr_coal_lock); update_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix); @@ -3624,8 +3609,6 @@ static void virtnet_rx_dim_work(struct work_struct *work) dev->name, qnum); dim->state = DIM_START_MEASURE; } -out: - rtnl_unlock(); } static int virtnet_coal_params_supported(struct ethtool_coalesce *ec) @@ -4077,7 +4060,7 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog, synchronize_net(); } - err = _virtnet_set_queues(vi, curr_qp + xdp_qp); + err = virtnet_set_queues(vi, curr_qp + xdp_qp); if (err) goto err; netif_set_real_num_rx_queues(dev, curr_qp + xdp_qp); @@ -4897,7 +4880,7 @@ static int virtnet_probe(struct virtio_device *vdev) virtio_device_ready(vdev); - _virtnet_set_queues(vi, vi->curr_queue_pairs); + virtnet_set_queues(vi, vi->curr_queue_pairs); /* a random MAC address has been assigned, notify the device. * We don't fail probe if VIRTIO_NET_F_CTRL_MAC_ADDR is not there -- 2.42.0