diff options
Diffstat (limited to 'drivers/staging/hv/netvsc_drv.c')
| -rw-r--r-- | drivers/staging/hv/netvsc_drv.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c index b41c9640b72..f433addaae5 100644 --- a/drivers/staging/hv/netvsc_drv.c +++ b/drivers/staging/hv/netvsc_drv.c @@ -46,6 +46,7 @@ struct net_device_context { /* point back to our device context */ struct vm_device *device_ctx; unsigned long avail; + struct work_struct work; }; struct netvsc_driver_context { @@ -225,6 +226,7 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj, unsigned int status) { struct vm_device *device_ctx = to_vm_device(device_obj); + struct net_device_context *ndev_ctx; struct net_device *net = dev_get_drvdata(&device_ctx->device); if (!net) { @@ -237,6 +239,8 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj, netif_carrier_on(net); netif_wake_queue(net); netif_notify_peers(net); + ndev_ctx = netdev_priv(net); + schedule_work(&ndev_ctx->work); } else { netif_carrier_off(net); netif_stop_queue(net); @@ -336,6 +340,25 @@ static const struct net_device_ops device_ops = { .ndo_set_mac_address = eth_mac_addr, }; +/* + * Send GARP packet to network peers after migrations. + * After Quick Migration, the network is not immediately operational in the + * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add + * another netif_notify_peers() into a scheduled work, otherwise GARP packet + * will not be sent after quick migration, and cause network disconnection. + */ +static void netvsc_send_garp(struct work_struct *w) +{ + struct net_device_context *ndev_ctx; + struct net_device *net; + + msleep(20); + ndev_ctx = container_of(w, struct net_device_context, work); + net = dev_get_drvdata(&ndev_ctx->device_ctx->device); + netif_notify_peers(net); +} + + static int netvsc_probe(struct device *device) { struct driver_context *driver_ctx = @@ -364,6 +387,7 @@ static int netvsc_probe(struct device *device) net_device_ctx->device_ctx = device_ctx; net_device_ctx->avail = ring_size; dev_set_drvdata(device, net); + INIT_WORK(&net_device_ctx->work, netvsc_send_garp); /* Notify the netvsc driver of the new device */ ret = net_drv_obj->base.OnDeviceAdd(device_obj, &device_info); |