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virtio-net: implement rx packet queueing

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If we don't have room to receive a packet, we return zero
from virtio_net_receive() and call qemu_flush_queued_packets()
as soon as space becomes available.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
This commit is contained in:
Mark McLoughlin 2009-04-29 13:40:02 +01:00
parent e19eb22486
commit 8aeff62d75
1 changed files with 4 additions and 1 deletions
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5
hw/virtio-net.c
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@ -269,6 +269,9 @@ static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIONet *n = to_virtio_net(vdev);
qemu_flush_queued_packets(n->vc);
}
static int do_virtio_net_can_receive(VirtIONet *n, int bufsize)
@ -368,7 +371,7 @@ static ssize_t virtio_net_receive(VLANClientState *vc, const uint8_t *buf, size_
size_t hdr_len, offset, i;
if (!do_virtio_net_can_receive(n, size))
return -1;
return 0;
if (!receive_filter(n, buf, size))
return size;