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Diffstat (limited to 'drivers/net/virtio_net.c')
-rw-r--r--drivers/net/virtio_net.c64
1 files changed, 5 insertions, 59 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 222f3d098ae4..3041e4eddb3b 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -48,16 +48,9 @@ struct virtnet_info
struct napi_struct napi;
unsigned int status;
- /* If we need to free in a timer, this is it. */
- struct timer_list xmit_free_timer;
-
/* Number of input buffers, and max we've ever had. */
unsigned int num, max;
- /* For cleaning up after transmission. */
- struct tasklet_struct tasklet;
- bool free_in_tasklet;
-
/* I like... big packets and I cannot lie! */
bool big_packets;
@@ -116,9 +109,6 @@ static void skb_xmit_done(struct virtqueue *svq)
/* We were probably waiting for more output buffers. */
netif_wake_queue(vi->dev);
-
- if (vi->free_in_tasklet)
- tasklet_schedule(&vi->tasklet);
}
static void receive_skb(struct net_device *dev, struct sk_buff *skb,
@@ -458,25 +448,9 @@ static void free_old_xmit_skbs(struct virtnet_info *vi)
}
}
-/* If the virtio transport doesn't always notify us when all in-flight packets
- * are consumed, we fall back to using this function on a timer to free them. */
-static void xmit_free(unsigned long data)
-{
- struct virtnet_info *vi = (void *)data;
-
- netif_tx_lock(vi->dev);
-
- free_old_xmit_skbs(vi);
-
- if (!skb_queue_empty(&vi->send))
- mod_timer(&vi->xmit_free_timer, jiffies + (HZ/10));
-
- netif_tx_unlock(vi->dev);
-}
-
static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb)
{
- int num, err;
+ int num;
struct scatterlist sg[2+MAX_SKB_FRAGS];
struct virtio_net_hdr_mrg_rxbuf *mhdr = skb_vnet_hdr(skb);
struct virtio_net_hdr *hdr = skb_vnet_hdr(skb);
@@ -522,25 +496,7 @@ static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb)
sg_set_buf(sg, hdr, sizeof(*hdr));
num = skb_to_sgvec(skb, sg+1, 0, skb->len) + 1;
-
- err = vi->svq->vq_ops->add_buf(vi->svq, sg, num, 0, skb);
- if (err >= 0 && !vi->free_in_tasklet) {
- /* Don't wait up for transmitted skbs to be freed. */
- skb_orphan(skb);
- nf_reset(skb);
- mod_timer(&vi->xmit_free_timer, jiffies + (HZ/10));
- }
-
- return err;
-}
-
-static void xmit_tasklet(unsigned long data)
-{
- struct virtnet_info *vi = (void *)data;
-
- netif_tx_lock_bh(vi->dev);
- free_old_xmit_skbs(vi);
- netif_tx_unlock_bh(vi->dev);
+ return vi->svq->vq_ops->add_buf(vi->svq, sg, num, 0, skb);
}
static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -555,6 +511,9 @@ again:
__skb_queue_head(&vi->send, skb);
if (likely(xmit_skb(vi, skb) >= 0)) {
vi->svq->vq_ops->kick(vi->svq);
+ /* Don't wait up for transmitted skbs to be freed. */
+ skb_orphan(skb);
+ nf_reset(skb);
return NETDEV_TX_OK;
}
@@ -903,10 +862,6 @@ static int virtnet_probe(struct virtio_device *vdev)
vi->pages = NULL;
INIT_DELAYED_WORK(&vi->refill, refill_work);
- /* If they give us a callback when all buffers are done, we don't need
- * the timer. */
- vi->free_in_tasklet = virtio_has_feature(vdev,VIRTIO_F_NOTIFY_ON_EMPTY);
-
/* If we can receive ANY GSO packets, we must allocate large ones. */
if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO4)
|| virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO6)
@@ -938,11 +893,6 @@ static int virtnet_probe(struct virtio_device *vdev)
skb_queue_head_init(&vi->recv);
skb_queue_head_init(&vi->send);
- tasklet_init(&vi->tasklet, xmit_tasklet, (unsigned long)vi);
-
- if (!vi->free_in_tasklet)
- setup_timer(&vi->xmit_free_timer, xmit_free, (unsigned long)vi);
-
err = register_netdev(dev);
if (err) {
pr_debug("virtio_net: registering device failed\n");
@@ -983,9 +933,6 @@ static void virtnet_remove(struct virtio_device *vdev)
/* Stop all the virtqueues. */
vdev->config->reset(vdev);
- if (!vi->free_in_tasklet)
- del_timer_sync(&vi->xmit_free_timer);
-
/* Free our skbs in send and recv queues, if any. */
while ((skb = __skb_dequeue(&vi->recv)) != NULL) {
kfree_skb(skb);
@@ -1019,7 +966,6 @@ static unsigned int features[] = {
VIRTIO_NET_F_GUEST_ECN, VIRTIO_NET_F_GUEST_UFO,
VIRTIO_NET_F_MRG_RXBUF, VIRTIO_NET_F_STATUS, VIRTIO_NET_F_CTRL_VQ,
VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN,
- VIRTIO_F_NOTIFY_ON_EMPTY,
};
static struct virtio_driver virtio_net = {