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authorRusty Russell <rusty@rustcorp.com.au>2008-02-04 23:49:57 -0500
committerRusty Russell <rusty@rustcorp.com.au>2008-02-04 23:49:58 +1100
commit18445c4d501b9ab4336f66ef46b092661ddaf336 (patch)
tree9d23185f207d912942890cf047d1d3200806b401 /drivers/net/virtio_net.c
parenta586d4f6016f7139d8c26df0e6927131168d3b5b (diff)
virtio: explicit enable_cb/disable_cb rather than callback return.
It seems that virtio_net wants to disable callbacks (interrupts) before calling netif_rx_schedule(), so we can't use the return value to do so. Rename "restart" to "cb_enable" and introduce "cb_disable" hook: callback now returns void, rather than a boolean. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/net/virtio_net.c')
-rw-r--r--drivers/net/virtio_net.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 4b813831275..7b0059f0f5d 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -52,13 +52,12 @@ static inline void vnet_hdr_to_sg(struct scatterlist *sg, struct sk_buff *skb)
sg_init_one(sg, skb_vnet_hdr(skb), sizeof(struct virtio_net_hdr));
}
-static bool skb_xmit_done(struct virtqueue *rvq)
+static void skb_xmit_done(struct virtqueue *rvq)
{
struct virtnet_info *vi = rvq->vdev->priv;
/* In case we were waiting for output buffers. */
netif_wake_queue(vi->dev);
- return true;
}
static void receive_skb(struct net_device *dev, struct sk_buff *skb,
@@ -161,12 +160,14 @@ static void try_fill_recv(struct virtnet_info *vi)
vi->rvq->vq_ops->kick(vi->rvq);
}
-static bool skb_recv_done(struct virtqueue *rvq)
+static void skb_recv_done(struct virtqueue *rvq)
{
struct virtnet_info *vi = rvq->vdev->priv;
- netif_rx_schedule(vi->dev, &vi->napi);
- /* Suppress further interrupts. */
- return false;
+ /* Schedule NAPI, Suppress further interrupts if successful. */
+ if (netif_rx_schedule_prep(vi->dev, &vi->napi)) {
+ rvq->vq_ops->disable_cb(rvq);
+ __netif_rx_schedule(vi->dev, &vi->napi);
+ }
}
static int virtnet_poll(struct napi_struct *napi, int budget)
@@ -192,7 +193,7 @@ again:
/* Out of packets? */
if (received < budget) {
netif_rx_complete(vi->dev, napi);
- if (unlikely(!vi->rvq->vq_ops->restart(vi->rvq))
+ if (unlikely(!vi->rvq->vq_ops->enable_cb(vi->rvq))
&& netif_rx_reschedule(vi->dev, napi))
goto again;
}