diff options
| -rw-r--r-- | drivers/net/ethernet/sun/sunvnet_common.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/net/ethernet/sun/sunvnet_common.c b/drivers/net/ethernet/sun/sunvnet_common.c index 58efe69b7ba7..8878b75d68b4 100644 --- a/drivers/net/ethernet/sun/sunvnet_common.c +++ b/drivers/net/ethernet/sun/sunvnet_common.c @@ -704,9 +704,8 @@ static int handle_mcast(struct vnet_port *port, void *msgbuf) return 0; } -/* Got back a STOPPED LDC message on port. If the queue is stopped, - * wake it up so that we'll send out another START message at the - * next TX. +/* If the queue is stopped, wake it up so that we'll + * send out another START message at the next TX. */ static void maybe_tx_wakeup(struct vnet_port *port) { @@ -734,6 +733,7 @@ EXPORT_SYMBOL_GPL(sunvnet_port_is_up_common); static int vnet_event_napi(struct vnet_port *port, int budget) { + struct net_device *dev = VNET_PORT_TO_NET_DEVICE(port); struct vio_driver_state *vio = &port->vio; int tx_wakeup, err; int npkts = 0; @@ -747,6 +747,16 @@ ldc_ctrl: if (event == LDC_EVENT_RESET) { vnet_port_reset(port); vio_port_up(vio); + + /* If the device is running but its tx queue was + * stopped (due to flow control), restart it. + * This is necessary since vnet_port_reset() + * clears the tx drings and thus we may never get + * back a VIO_TYPE_DATA ACK packet - which is + * the normal mechanism to restart the tx queue. + */ + if (netif_running(dev)) + maybe_tx_wakeup(port); } port->rx_event = 0; return 0; |