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xen: flush queue when getting an event 

xen does not have a register that, when written, will cause can_receive
to go from false to true.  However, flushing the queue can be attempted
whenever the front-end raises its side of the Xen event channel.  There
is a single event channel for tx and rx.

Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Amos Kong <akong@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This commit is contained in:
Paolo Bonzini 2012-08-09 16:45:57 +02:00 committed by Stefan Hajnoczi
parent e8b4c680b4
commit a98b140223
1 changed files with 1 additions and 0 deletions
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1
hw/xen_nic.c
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@ -415,6 +415,7 @@ static void net_event(struct XenDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
net_tx_packets(netdev);
qemu_flush_queued_packets(&netdev->nic->nc);
}
static int net_free(struct XenDevice *xendev)