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vhost-net: initialize zcopy packet counters

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These packet counters are used to drive the zercopy
selection heuristic so nothing too bad happens if they are off a bit -
and they are also reset once in a while.
But it's cleaner to clear them when backend is set so that
we start in a known state.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael S. Tsirkin 2012-12-03 07:31:51 +00:00 committed by David S. Miller
parent 3e14bd390e
commit 64e9a9b8a0
1 changed files with 3 additions and 0 deletions
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3
drivers/vhost/net.c
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@ -823,6 +823,9 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd)
r = vhost_init_used(vq);
if (r)
goto err_vq;
n->tx_packets = 0;
n->tx_zcopy_err = 0;
}
mutex_unlock(&vq->mutex);