From: Rusty Russell <rusty@rustcorp•com.au>
To: netdev <netdev@vger•kernel.org>
Cc: Virtualization List <virtualization@lists•linux-foundation.org>,
"Michael S. Tsirkin" <mst@redhat•com>,
Amit Shah <amit.shah@redhat•com>
Subject: [PATCH 1/2] virtio: net: Move vq initialization into separate function
Date: Wed, 04 Jan 2012 13:27:05 +1030 [thread overview]
Message-ID: <87obukcgzi.fsf@rustcorp.com.au> (raw)
From: Amit Shah <amit.shah@redhat•com>
The probe and PM restore functions will share this code.
Signed-off-by: Amit Shah <amit.shah@redhat•com>
Signed-off-by: Rusty Russell <rusty@rustcorp•com.au>
---
drivers/net/virtio_net.c | 47 ++++++++++++++++++++++++++++-------------------
1 file changed, 28 insertions(+), 19 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 1b67e8a..ec8c400 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -966,15 +966,38 @@ static void virtnet_config_changed(struct virtio_device *vdev)
virtnet_update_status(vi);
}
+static int init_vqs(struct virtnet_info *vi)
+{
+ struct virtqueue *vqs[3];
+ vq_callback_t *callbacks[] = { skb_recv_done, skb_xmit_done, NULL};
+ const char *names[] = { "input", "output", "control" };
+ int nvqs, err;
+
+ /* We expect two virtqueues, receive then send,
+ * and optionally control. */
+ nvqs = virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ? 3 : 2;
+
+ err = vi->vdev->config->find_vqs(vi->vdev, nvqs, vqs, callbacks, names);
+ if (err)
+ return err;
+
+ vi->rvq = vqs[0];
+ vi->svq = vqs[1];
+
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {
+ vi->cvq = vqs[2];
+
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VLAN))
+ vi->dev->features |= NETIF_F_HW_VLAN_FILTER;
+ }
+ return 0;
+}
+
static int virtnet_probe(struct virtio_device *vdev)
{
int err;
struct net_device *dev;
struct virtnet_info *vi;
- struct virtqueue *vqs[3];
- vq_callback_t *callbacks[] = { skb_recv_done, skb_xmit_done, NULL};
- const char *names[] = { "input", "output", "control" };
- int nvqs;
/* Allocate ourselves a network device with room for our info */
dev = alloc_etherdev(sizeof(struct virtnet_info));
@@ -1046,24 +1069,10 @@ static int virtnet_probe(struct virtio_device *vdev)
if (virtio_has_feature(vdev, VIRTIO_NET_F_MRG_RXBUF))
vi->mergeable_rx_bufs = true;
- /* We expect two virtqueues, receive then send,
- * and optionally control. */
- nvqs = virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ? 3 : 2;
-
- err = vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names);
+ err = init_vqs(vi);
if (err)
goto free_stats;
- vi->rvq = vqs[0];
- vi->svq = vqs[1];
-
- if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {
- vi->cvq = vqs[2];
-
- if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VLAN))
- dev->features |= NETIF_F_HW_VLAN_FILTER;
- }
-
err = register_netdev(dev);
if (err) {
pr_debug("virtio_net: registering device failed\n");
next reply other threads:[~2012-01-04 2:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-04 2:57 Rusty Russell [this message]
2012-01-04 2:58 ` [PATCH 2/2] virtio: net: Move vq and vq buf removal into separate function Rusty Russell
2012-01-04 3:00 ` [PATCH] (please ack, don't apply!) virtio: net: Add freeze, restore handlers to support S4 Rusty Russell
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