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virtio_net: separate virtnet_rx_resize()

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This patch separates two sub-functions from virtnet_rx_resize():

* virtnet_rx_pause
* virtnet_rx_resume

Then the subsequent reset rx for xsk can share these two functions.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20240708112537.96291-3-xuanzhuo@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xuan Zhuo
2024-07-08 19:25:29 +08:00
committed by Jakub Kicinski
parent 41d4a17420
commit 47879b7322
1 changed files with 21 additions and 8 deletions
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29
drivers/net/virtio_net.c
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@@ -2665,28 +2665,41 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
static int virtnet_rx_resize(struct virtnet_info *vi,
struct receive_queue *rq, u32 ring_num)
static void virtnet_rx_pause(struct virtnet_info *vi, struct receive_queue *rq)
{
bool running = netif_running(vi->dev);
int err, qindex;
qindex = rq - vi->rq;
if (running) {
napi_disable(&rq->napi);
virtnet_cancel_dim(vi, &rq->dim);
}
}
err = virtqueue_resize(rq->vq, ring_num, virtnet_rq_unmap_free_buf);
if (err)
netdev_err(vi->dev, "resize rx fail: rx queue index: %d err: %d\n", qindex, err);
static void virtnet_rx_resume(struct virtnet_info *vi, struct receive_queue *rq)
{
bool running = netif_running(vi->dev);
if (!try_fill_recv(vi, rq, GFP_KERNEL))
schedule_delayed_work(&vi->refill, 0);
if (running)
virtnet_napi_enable(rq->vq, &rq->napi);
}
static int virtnet_rx_resize(struct virtnet_info *vi,
struct receive_queue *rq, u32 ring_num)
{
int err, qindex;
qindex = rq - vi->rq;
virtnet_rx_pause(vi, rq);
err = virtqueue_resize(rq->vq, ring_num, virtnet_rq_unmap_free_buf);
if (err)
netdev_err(vi->dev, "resize rx fail: rx queue index: %d err: %d\n", qindex, err);
virtnet_rx_resume(vi, rq);
return err;
}