diff options
| -rw-r--r-- | drivers/net/xen-netback/common.h | 6 | ||||
| -rw-r--r-- | drivers/net/xen-netback/interface.c | 19 | ||||
| -rw-r--r-- | drivers/net/xen-netback/netback.c | 2 |
3 files changed, 18 insertions, 9 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index 28c98229e95f..4a92fc19f410 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -198,6 +198,11 @@ struct xenvif_queue { /* Per-queue data for xenvif */ struct xenvif_stats stats; }; +enum state_bit_shift { + /* This bit marks that the vif is connected */ + VIF_STATUS_CONNECTED +}; + struct xenvif { /* Unique identifier for this interface. */ domid_t domid; @@ -220,6 +225,7 @@ struct xenvif { * frontend is rogue. */ bool disabled; + unsigned long status; /* Queues */ struct xenvif_queue *queues; diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index bd59d9dbf27b..fbdadb3d8220 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -55,7 +55,8 @@ static inline void xenvif_stop_queue(struct xenvif_queue *queue) int xenvif_schedulable(struct xenvif *vif) { - return netif_running(vif->dev) && netif_carrier_ok(vif->dev); + return netif_running(vif->dev) && + test_bit(VIF_STATUS_CONNECTED, &vif->status); } static irqreturn_t xenvif_tx_interrupt(int irq, void *dev_id) @@ -267,7 +268,7 @@ static void xenvif_down(struct xenvif *vif) static int xenvif_open(struct net_device *dev) { struct xenvif *vif = netdev_priv(dev); - if (netif_carrier_ok(dev)) + if (test_bit(VIF_STATUS_CONNECTED, &vif->status)) xenvif_up(vif); netif_tx_start_all_queues(dev); return 0; @@ -276,7 +277,7 @@ static int xenvif_open(struct net_device *dev) static int xenvif_close(struct net_device *dev) { struct xenvif *vif = netdev_priv(dev); - if (netif_carrier_ok(dev)) + if (test_bit(VIF_STATUS_CONNECTED, &vif->status)) xenvif_down(vif); netif_tx_stop_all_queues(dev); return 0; @@ -528,6 +529,7 @@ void xenvif_carrier_on(struct xenvif *vif) if (!vif->can_sg && vif->dev->mtu > ETH_DATA_LEN) dev_set_mtu(vif->dev, ETH_DATA_LEN); netdev_update_features(vif->dev); + set_bit(VIF_STATUS_CONNECTED, &vif->status); netif_carrier_on(vif->dev); if (netif_running(vif->dev)) xenvif_up(vif); @@ -625,9 +627,11 @@ void xenvif_carrier_off(struct xenvif *vif) struct net_device *dev = vif->dev; rtnl_lock(); - netif_carrier_off(dev); /* discard queued packets */ - if (netif_running(dev)) - xenvif_down(vif); + if (test_and_clear_bit(VIF_STATUS_CONNECTED, &vif->status)) { + netif_carrier_off(dev); /* discard queued packets */ + if (netif_running(dev)) + xenvif_down(vif); + } rtnl_unlock(); } @@ -656,8 +660,7 @@ void xenvif_disconnect(struct xenvif *vif) unsigned int num_queues = vif->num_queues; unsigned int queue_index; - if (netif_carrier_ok(vif->dev)) - xenvif_carrier_off(vif); + xenvif_carrier_off(vif); for (queue_index = 0; queue_index < num_queues; ++queue_index) { queue = &vif->queues[queue_index]; diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 769e553d3f45..6c4cc0f44da5 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1953,7 +1953,7 @@ int xenvif_kthread_guest_rx(void *data) * context so we defer it here, if this thread is * associated with queue 0. */ - if (unlikely(queue->vif->disabled && netif_carrier_ok(queue->vif->dev) && queue->id == 0)) + if (unlikely(queue->vif->disabled && queue->id == 0)) xenvif_carrier_off(queue->vif); if (kthread_should_stop()) |