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virtio_net: parametrize the napi_weight for virtio receive queue.
author
Dor Laor
<dor.laor@qumranet.com>
Sun, 16 Dec 2007 13:19:43 +0000
(15:19 +0200)
committer
Rusty Russell
<rusty@rustcorp.com.au>
Mon, 4 Feb 2008 12:50:09 +0000
(23:50 +1100)
It is done in order to improve performance.
Signed-off-by: Dor Laor <dor.laor@qumranet.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
drivers/net/virtio_net.c
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diff --git
a/drivers/net/virtio_net.c
b/drivers/net/virtio_net.c
index
a61c176
..
e66de0c
100644
(file)
--- a/
drivers/net/virtio_net.c
+++ b/
drivers/net/virtio_net.c
@@
-24,6
+24,9
@@
#include <linux/virtio_net.h>
#include <linux/scatterlist.h>
+static int napi_weight = 128;
+module_param(napi_weight, int, 0444);
+
static int csum = 1, gso = 1;
module_param(csum, bool, 0444);
module_param(gso, bool, 0444);
@@
-353,7
+356,7
@@
static int virtnet_probe(struct virtio_device *vdev)
/* Set up our device-specific information */
vi = netdev_priv(dev);
- netif_napi_add(dev, &vi->napi, virtnet_poll,
16
);
+ netif_napi_add(dev, &vi->napi, virtnet_poll,
napi_weight
);
vi->dev = dev;
vi->vdev = vdev;