Messages in this thread Patch in this message | | | From | Amit Shah <> | Subject | [PATCH 09/11] virtio: net: Add freeze, restore handlers to support S4 | Date | Thu, 29 Sep 2011 20:56:05 +0530 |
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Remove all the vqs on hibernation and re-create them after restoring from a hibernated image. This keeps networking working across hibernation.
Signed-off-by: Amit Shah <amit.shah@redhat.com> --- drivers/net/virtio_net.c | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index dcd4b01..d4391c0 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1131,6 +1131,30 @@ static void __devexit virtnet_remove(struct virtio_device *vdev) free_netdev(vi->dev); } +#ifdef CONFIG_PM +static int virtnet_freeze(struct virtio_device *vdev) +{ + struct virtnet_info *vi = vdev->priv; + + remove_vq_common(vi); + + return 0; +} + +static int virtnet_restore(struct virtio_device *vdev) +{ + struct virtnet_info *vi = vdev->priv; + int err; + + err = init_vqs(vi); + if (err) + return err; + + try_fill_recv(vi, GFP_KERNEL); + return 0; +} +#endif + static struct virtio_device_id id_table[] = { { VIRTIO_ID_NET, VIRTIO_DEV_ANY_ID }, { 0 }, @@ -1155,6 +1179,10 @@ static struct virtio_driver virtio_net_driver = { .probe = virtnet_probe, .remove = __devexit_p(virtnet_remove), .config_changed = virtnet_config_changed, +#ifdef CONFIG_PM + .freeze = virtnet_freeze, + .restore = virtnet_restore, +#endif }; static int __init init(void) -- 1.7.6.2
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