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Subject[PATCH RFC 0/3] virtio and vhost-net capacity handling
OK, here's a new attempt to use the new capacity api.  I also added more
comments to clarify the logic. Hope this is more readable. Let me know

This is on top of the patches applied by Rusty.

Note: there are now actually 2 calls to fee_old_xmit_skbs on
data path so instead of passing flag '2' to the
second one I thought we can just make each call free up
at least 1 skb. This will work and even might be a bit faster (less
branches), but in the end I discarded this idea as too fragile (relies
on two calls on data path to function properly).

Warning: untested. Posting now to give people chance to
comment on the API.

Michael S. Tsirkin (3):
virtio_ring: add capacity check API
virtio_net: fix tx capacity checks using new API
virtio_net: limit xmit polling

drivers/net/virtio_net.c | 65 +++++++++++++++++++++++------------------
drivers/virtio/virtio_ring.c | 8 +++++
include/linux/virtio.h | 5 +++
3 files changed, 49 insertions(+), 29 deletions(-)


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