[PATCH 2/3] virtio_net: Make use of napi_weight module param

[Mark McLoughlin <markmc@redhat.com>]

Currently, the napi_weight module param is ignored and
we hardcode the weight to 16 since this commit:

    commit 85a8b9da078977c6198d434837c7d077669c9c54
    Author: Anthony Liguori <aliguori@us.ibm.com>
    Date:   Sun Jan 6 21:37:01 2008 -0600

      Make sure to set weight to 16 always.

      Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Allowing the weight to be higher should reduce the interrupt
rate in the guest. In practice, though, it doesn't appear to
make much difference.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>
---
 external-module-compat.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/external-module-compat.h b/external-module-compat.h
index 4da2296..fc20bc9 100644
--- a/external-module-compat.h
+++ b/external-module-compat.h
@@ -65,7 +65,7 @@ struct napi_struct {
 #define netif_napi_add(dev, napi, pollfn, weightval)	\
 do {							\
 	(dev)->poll = (pollfn);				\
-	(dev)->weight = 16;				\
+	(dev)->weight = (weightval);                    \
 } while(0)
 #define netif_rx_schedule(dev, napi) netif_rx_schedule(dev)
 
-- 
1.5.5.1